Split source files, for ease of maintenance.
This commit is contained in:
Bobbi Webber-Manners
parent
297b525735
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d31ea2636b
BIN
applecorn.po
BIN
applecorn.po
Binary file not shown.
11
applecorn.s
11
applecorn.s
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@ -150,7 +150,16 @@ WRTAUX MAC
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EOM
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* Code is all included from PUT files below ...
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* ... order matters!
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PUT LOADER
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PUT MAINMEM
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PUT AUXMEM
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PUT AUX.MOS.WS
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PUT AUX.AMOS.INIT
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PUT AUX.VDU
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PUT AUX.HOSTFS
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PUT AUX.AMOS.KRNL
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PUT AUX.OSBW.ORIG
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* PUT AUX.OSBW.JGH
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PUT AUX.MISC
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PUT AUX.IRQ.VECS
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@ -0,0 +1,143 @@
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***********************************************************
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* BBC Micro 'virtual machine' in Apple //e aux memory
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***********************************************************
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ZP1 EQU $90 ; $90-$9f are Econet space
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; so safe to use
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ZP2 EQU $92
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ZP3 EQU $94
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ROW EQU $96 ; Cursor row
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COL EQU $97 ; Cursor column
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STRTBCKL EQU $9D
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STRTBCKH EQU $9E
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WARMSTRT EQU $9F ; Cold or warm start
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MAGIC EQU $BC ; Arbitrary value
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MOSSHIM
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ORG AUXMOS ; MOS shim implementation
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*
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* Shim code to service Acorn MOS entry points using
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* Apple II monitor routines
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* This code is initially loaded into aux mem at AUXMOS1
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* Then relocated into aux LC at AUXMOS by MOSINIT
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*
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* Initially executing at $3000 until copied to $D000
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MOSINIT STA $C005 ; Make sure we are writing aux
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STA $C000 ; Make sure 80STORE is off
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LDA $C08B ; LC RAM Rd/Wt, 1st 4K bank
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LDA $C08B
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LDA WARMSTRT ; Don't relocate on restart
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CMP #MAGIC
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BEQ :NORELOC
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LDA #<AUXMOS1 ; Relocate MOS shim
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STA A1L
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LDA #>AUXMOS1
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STA A1H
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LDA #<EAUXMOS1
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STA A2L
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LDA #>EAUXMOS1
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STA A2H
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LDA #<AUXMOS
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STA A4L
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LDA #>AUXMOS
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STA A4H
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:L1 LDA (A1L)
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STA (A4L)
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LDA A1H
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CMP A2H
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BNE :S1
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LDA A1L
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CMP A2L
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BNE :S1
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BRA :S4
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:S1 INC A1L
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BNE :S2
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INC A1H
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:S2 INC A4L
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BNE :S3
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INC A4H
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:S3 BRA :L1
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:S4 LDA #<MOSVEC-MOSINIT+AUXMOS1
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STA A1L
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LDA #>MOSVEC-MOSINIT+AUXMOS1
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STA A1H
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LDA #<MOSVEND-MOSINIT+AUXMOS1
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STA A2L
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LDA #>MOSVEND-MOSINIT+AUXMOS1
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STA A2H
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LDA #<MOSAPI
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STA A4L
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LDA #>MOSAPI
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STA A4H
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:L2 LDA (A1L)
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STA (A4L)
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LDA A1H
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CMP A2H
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BNE :S5
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LDA A1L
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CMP A2L
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BNE :S5
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BRA :S8
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:S5 INC A1L
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BNE :S6
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INC A1H
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:S6 INC A4L
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BNE :S7
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INC A4H
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:S7 BRA :L2
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:NORELOC
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:S8 STA $C00D ; 80 col on
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STA $C003 ; Alt charset off
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STA $C055 ; PAGE2
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STZ ROW
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STZ COL
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JSR CLEAR
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STZ ESCFLAG
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LDX #$35
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:INITPG2 LDA DEFVEC,X
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STA $200,X
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DEX
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BPL :INITPG2
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LDA #<:HELLO
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LDY #>:HELLO
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JSR PRSTR
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LDA #$09 ; Print language name at $8009
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LDY #$80
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JSR PRSTR
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JSR OSNEWL
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JSR OSNEWL
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LDA WARMSTRT
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CMP #MAGIC
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BNE :S9
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LDA #<:OLDM
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LDY #>:OLDM
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JSR PRSTR
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:S9 LDA #MAGIC ; So we do not reloc again
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STA WARMSTRT
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CLC ; CLC=Entered from RESET
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LDA #$01 ; $01=Entering application code
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JMP AUXADDR ; Start Acorn ROM
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* No return
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:HELLO ASC 'Applecorn MOS v0.01'
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DB $0D,$0D,$00
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:OLDM ASC '(Use OLD to recover any program)'
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DB $0D,$0D,$00
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@ -0,0 +1,495 @@
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*********************************************************
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* AppleMOS Kernel
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*********************************************************
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BYTE8E PHP ; Save CLC=reset, SEC=not reset
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LDA #$09 ; $8E = enter language ROM
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LDY #$80 ; Print lang name at $8009
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JSR PRSTR
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JSR OSNEWL
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JSR OSNEWL
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PLP ; Get entry type back
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LDA #$01
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JMP AUXADDR
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SERVICE RTS
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* OSCLI HANDLER
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* On entry, XY=>command string
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CLIHND PHX
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PHY
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STX ZP1+0 ; Pointer to CLI
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STY ZP1+1
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:L1 LDA (ZP1)
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CMP #'*' ; Trim any leading stars
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BEQ :NEXT
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CMP #' ' ; Trim any leading spaces
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BEQ :NEXT
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BRA :TRIMMED
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:NEXT INC ZP1
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BNE :L1
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INC ZP1+1
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BRA :L1
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:TRIMMED CMP #'|' ; | is comment
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BEQ :IEXIT
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CMP #$0D ; Carriage return
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BEQ :IEXIT
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LDA #<:QUIT
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STA ZP2
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LDA #>:QUIT
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STA ZP2+1
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JSR STRCMP
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BCS :S1
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JSR STARQUIT
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BRA :IEXIT
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:S1 LDA #<:CAT
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STA ZP2
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LDA #>:CAT
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STA ZP2+1
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JSR STRCMP
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BCS :S2
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JSR STARCAT
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BRA :IEXIT
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:S2 LDA #<:CAT2
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STA ZP2
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LDA #>:CAT2
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STA ZP2+1
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JSR STRCMP
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BCS :S3
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JSR STARCAT
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BRA :IEXIT
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:S3 LDA #<:DIR
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STA ZP2
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LDA #>:DIR
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STA ZP2+1
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JSR STRCMP
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BCS :S4
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JSR STARDIR
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BRA :IEXIT
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:S4 LDA #<:LOAD
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STA ZP2
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LDA #>:LOAD
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STA ZP2+1
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JSR STRCMP
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BCS :S5
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JSR STARLOAD
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BRA :EXIT
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:S5 LDA #<:SAVE
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STA ZP2
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LDA #>:SAVE
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STA ZP2+1
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JSR STRCMP
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BCS :S6
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JSR STARSAVE
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:IEXIT BRA :EXIT
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:S6 LDA #<:RUN
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STA ZP2
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LDA #>:RUN
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STA ZP2+1
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JSR STRCMP
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BCS :S7
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JSR STARRUN
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BRA :EXIT
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:S7 LDA #<:HELP
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STA ZP2
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LDA #>:HELP
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STA ZP2+1
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JSR STRCMP
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BCS :ASKROM
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JSR STARHELP
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BRA :EXIT
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:ASKROM LDA $8006 ; Check service entry
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BPL :UNSUPP ; Only BASIC has no srvc entry
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LDA ZP1 ; String in (OSLPTR),Y
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STA OSLPTR
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LDA ZP1+1
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STA OSLPTR+1
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LDY #$00
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LDA #$04 ; Service 4 Unrecognized Cmd
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LDX #$0F ; ROM slot
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JSR $8003 ; Service entry point
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TAX ; Check ret val
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BEQ :EXIT ; Call claimed
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:UNSUPP LDA #<:OSCLIM
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LDY #>:OSCLIM
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JSR PRSTR
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PLY
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PLX
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STX ZP3
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STY ZP3+1
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LDY #$00
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:PL1 LDA (ZP3),Y
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CMP #$0D
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BEQ :PS1
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CMP #$00
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BEQ :PS1
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JSR $FFEE ; OSWRCH
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INY
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BRA :PL1
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:PS1 LDA #<:OSCLIM2
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LDY #>:OSCLIM2
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JSR PRSTR
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RTS
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:EXIT PLY
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PLX
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RTS
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:QUIT ASC 'QUIT'
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DB $00
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:CAT ASC 'CAT'
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DB $00
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:CAT2 ASC '.'
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DB $00
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:DIR ASC 'DIR'
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DB $00
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:LOAD ASC 'LOAD'
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DB $00
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:SAVE ASC 'SAVE'
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DB $00
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:RUN ASC 'RUN'
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DB $00
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:HELP ASC 'HELP'
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DB $00
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:OSCLIM ASC 'OSCLI('
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DB $00
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:OSCLIM2 ASC ').'
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DB $00
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* String comparison for OSCLI
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* Compares str in ZP1 with null-terminated str in ZP2
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* Clear carry if match, set carry otherwise
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* Leaves (ZP1),Y pointing to char after verb
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STRCMP LDY #$00
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:L1 LDA (ZP2),Y
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BEQ :PMATCH
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CMP (ZP1),Y
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BNE :MISMTCH
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INY
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BRA :L1
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:PMATCH LDA (ZP1),Y
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CMP #$0D
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BEQ :MATCH
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CMP #' '
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BEQ :MATCH
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CMP #'"'
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BEQ :MATCH
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BRA :MISMTCH
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:MATCH CLC
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RTS
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:MISMTCH SEC
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RTS
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* Print *HELP test
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STARHELP LDA #<:MSG
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LDY #>:MSG
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JSR PRSTR
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LDA #$09 ; Language name
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LDY #$80
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JSR PRSTR
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LDA #<:MSG2
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LDY #>:MSG2
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JSR PRSTR
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RTS
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:MSG DB $0D
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ASC 'Applecorn MOS v0.01'
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DB $0D,$0D,$00
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:MSG2 DB $0D,$00
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* Handle *QUIT command
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STARQUIT >>> XF2MAIN,QUIT
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* Handle *CAT / *. command (list directory)
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STARCAT >>> XF2MAIN,CATALOG
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STARCATRET
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>>> ENTAUX
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RTS
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* Print one block of a catalog. Called by CATALOG
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* Block is in AUXBLK
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PRONEBLK >>> ENTAUX
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LDA AUXBLK+4 ; Get storage type
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AND #$E0 ; Mask 3 MSBs
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CMP #$E0
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BNE :NOTKEY ; Not a key block
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LDA #<:DIRM
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LDY #>:DIRM
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JSR PRSTR
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:NOTKEY LDA #$00
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:L1 PHA
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JSR PRONEENT
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PLA
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INC
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CMP #13 ; Number of dirents in block
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BNE :L1
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>>> XF2MAIN,CATALOGRET
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:DIRM ASC 'Directory: '
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DB $00
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* Print a single directory entry
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* On entry: A = dirent index in AUXBLK
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PRONEENT TAX
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LDA #<AUXBLK+4 ; Skip pointers
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STA ZP3
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LDA #>AUXBLK+4
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STA ZP3+1
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:L1 CPX #$00
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BEQ :S1
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CLC
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LDA #$27 ; Size of dirent
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ADC ZP3
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STA ZP3
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LDA #$00
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ADC ZP3+1
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STA ZP3+1
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DEX
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BRA :L1
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:S1 LDY #$00
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LDA (ZP3),Y
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BEQ :EXIT ; Inactive entry
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AND #$0F ; Len of filename
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TAX
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LDY #$01
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:L2 CPX #$00
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BEQ :S2
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LDA (ZP3),Y
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JSR OSWRCH
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DEX
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INY
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BRA :L2
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:S2 JSR OSNEWL
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:EXIT RTS
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* Consume spaces in command line. Treat " as space!
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* Return C set if no space found, C clear otherwise
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* Command line pointer in (ZP1),Y
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EATSPC LDA (ZP1),Y ; Check first char is ...
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CMP #' ' ; ... space
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BEQ :START
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CMP #'"' ; Or quote mark
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BEQ :START
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BRA :NOTFND
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:START INY
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:L1 LDA (ZP1),Y ; Eat any additional ...
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CMP #' ' ; ... spaces
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BEQ :CONT
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CMP #'"' ; Or quote marks
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BNE :DONE
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:CONT INY
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BRA :L1
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:DONE CLC
|
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RTS
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:NOTFND SEC
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RTS
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* Consume chars in command line until space or " is found
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* Command line pointer in (ZP1),Y
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* Returns with carry set if EOL
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EATWORD LDA (ZP1),Y
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CMP #' '
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BEQ :SPC
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CMP #'"'
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BEQ :SPC
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CMP #$0D ; Carriage return
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BEQ :EOL
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INY
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BRA EATWORD
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:SPC CLC
|
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RTS
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:EOL SEC
|
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RTS
|
||||
|
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* Handle *DIR (directory change) command
|
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* On entry, ZP1 points to command line
|
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STARDIR JSR EATSPC ; Eat leading spaces
|
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BCC :S1 ; If no space found
|
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RTS ; No argument
|
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:S1 LDX #$01
|
||||
:L3 LDA (ZP1),Y
|
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CMP #$0D
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||||
BEQ :S3
|
||||
>>> WRTMAIN
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STA MOSFILE,X
|
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>>> WRTAUX
|
||||
INY
|
||||
INX
|
||||
BRA :L3
|
||||
:S3 DEX
|
||||
>>> WRTMAIN
|
||||
STX MOSFILE ; Length byte
|
||||
>>> WRTAUX
|
||||
>>> XF2MAIN,SETPFX
|
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STARDIRRET
|
||||
>>> ENTAUX
|
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RTS
|
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|
||||
* Add Y to ZP1 pointer. Clear Y.
|
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ADDZP1Y CLC
|
||||
TYA
|
||||
ADC ZP1
|
||||
STA ZP1
|
||||
LDA #$00
|
||||
ADC ZP1+1
|
||||
STA ZP1+1
|
||||
LDY #$00
|
||||
RTS
|
||||
|
||||
* Decode ASCII hex digit in A
|
||||
* Returns with carry set if bad char, C clear otherwise
|
||||
HEXDIGIT CMP #'F'+1
|
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BCS :BADCHAR ; char > 'F'
|
||||
CMP #'A'
|
||||
BCC :S1
|
||||
SEC ; 'A' <= char <= 'F'
|
||||
SBC #'A'-10
|
||||
CLC
|
||||
RTS
|
||||
:S1 CMP #'9'+1
|
||||
BCS :BADCHAR ; '9' < char < 'A'
|
||||
CMP #'0'
|
||||
BCC :BADCHAR ; char < '0'
|
||||
SEC ; '0' <= char <= '9'
|
||||
SBC #'0'
|
||||
CLC
|
||||
RTS
|
||||
:BADCHAR SEC
|
||||
RTS
|
||||
|
||||
* Decode hex constant on command line
|
||||
* On entry, ZP1 points to command line
|
||||
HEXCONST LDX #$00
|
||||
:L1 STZ :BUF,X ; Clear :BUF
|
||||
INX
|
||||
CPX #$04
|
||||
BNE :L1
|
||||
LDX #$00
|
||||
LDY #$00
|
||||
:L2 LDA (ZP1),Y ; Parse hex digits into
|
||||
JSR HEXDIGIT ; :BUF, left aligned
|
||||
BCS :NOTHEX
|
||||
STA :BUF,X
|
||||
INY
|
||||
INX
|
||||
CPX #$04
|
||||
BNE :L2
|
||||
LDA (ZP1),Y ; Peek at next char
|
||||
:NOTHEX CPX #$00 ; Was it the first digit?
|
||||
BEQ :ERR ; If so, bad hex constant
|
||||
CMP #' ' ; If whitespace, then okay
|
||||
BEQ :OK
|
||||
CMP #$0D
|
||||
BEQ :OK
|
||||
:ERR SEC
|
||||
RTS
|
||||
:OK LDA :BUF-4,X
|
||||
ASL
|
||||
ASL
|
||||
ASL
|
||||
ASL
|
||||
ORA :BUF-3,X
|
||||
STA ADDRBUF+1
|
||||
LDA :BUF-2,X
|
||||
ASL
|
||||
ASL
|
||||
ASL
|
||||
ASL
|
||||
ORA :BUF-1,X
|
||||
STA ADDRBUF
|
||||
CLC
|
||||
RTS
|
||||
:ZEROPAD DB $00,$00,$00
|
||||
:BUF DB $00,$00,$00,$00
|
||||
|
||||
ADDRBUF DW $0000 ; Used by HEXCONST
|
||||
|
||||
* Handle *LOAD command
|
||||
* On entry, ZP1 points to command line
|
||||
STARLOAD JSR CLRCB
|
||||
JSR EATSPC ; Eat leading spaces
|
||||
BCS :ERR
|
||||
JSR ADDZP1Y ; Advance ZP1
|
||||
LDA ZP1 ; Pointer to filename
|
||||
STA OSFILECB
|
||||
LDA ZP1+1
|
||||
STA OSFILECB+1
|
||||
JSR EATWORD ; Advance past filename
|
||||
BCS :NOADDR ; No load address given
|
||||
LDA #$0D ; Carriage return
|
||||
STA (ZP1),Y ; Terminate filename
|
||||
INY
|
||||
JSR EATSPC ; Eat any whitespace
|
||||
JSR ADDZP1Y ; Update ZP1
|
||||
JSR HEXCONST
|
||||
BCS :ERR ; Bad hex constant
|
||||
LDA ADDRBUF
|
||||
STA OSFILECB+2 ; Load address LSB
|
||||
LDA ADDRBUF+1
|
||||
STA OSFILECB+3 ; Load address MSB
|
||||
:OSFILE LDX #<OSFILECB
|
||||
LDY #>OSFILECB
|
||||
LDA #$FF ; OSFILE load flag
|
||||
JSR OSFILE
|
||||
:END RTS
|
||||
:NOADDR LDA #$FF ; Set OSFILECB+6 to non-zero
|
||||
STA OSFILECB+6 ; Means use the file's addr
|
||||
BRA :OSFILE
|
||||
:ERR JSR BEEP
|
||||
RTS
|
||||
|
||||
* Handle *SAVE command
|
||||
* On entry, ZP1 points to command line
|
||||
STARSAVE JSR CLRCB
|
||||
JSR EATSPC ; Eat leading space
|
||||
BCS :ERR
|
||||
JSR ADDZP1Y ; Advance ZP1
|
||||
LDA ZP1 ; Pointer to filename
|
||||
STA OSFILECB
|
||||
LDA ZP1+1
|
||||
STA OSFILECB+1
|
||||
JSR EATWORD
|
||||
BCS :ERR ; No start address given
|
||||
LDA #$0D ; Carriage return
|
||||
STA (ZP1),Y ; Terminate filename
|
||||
INY
|
||||
JSR EATSPC ; Eat any whitespace
|
||||
JSR ADDZP1Y ; Update ZP1
|
||||
JSR HEXCONST
|
||||
BCS :ERR ; Bad start address
|
||||
LDA ADDRBUF
|
||||
STA OSFILECB+10
|
||||
LDA ADDRBUF+1
|
||||
STA OSFILECB+11
|
||||
JSR EATSPC ; Eat any whitespace
|
||||
JSR ADDZP1Y ; Update ZP1
|
||||
JSR HEXCONST
|
||||
BCS :ERR ; Bad end address
|
||||
LDA ADDRBUF
|
||||
STA OSFILECB+14
|
||||
LDA ADDRBUF+1
|
||||
STA OSFILECB+15
|
||||
LDX #<OSFILECB
|
||||
LDY #>OSFILECB
|
||||
LDA #$00 ; OSFILE save flag
|
||||
JSR OSFILE
|
||||
:END RTS
|
||||
:ERR JSR BEEP
|
||||
RTS
|
||||
|
||||
* Handle *RUN command
|
||||
* On entry, ZP1 points to command line
|
||||
STARRUN TYA
|
||||
CLC
|
||||
ADC ZP1
|
||||
TAX
|
||||
LDA #$00
|
||||
ADC ZP2
|
||||
TAY
|
||||
LDA #$04
|
||||
CALLFSCV JMP (FSCV) ; FSCV does the work
|
||||
|
||||
* Clear OSFILE control block to zeros
|
||||
CLRCB LDA #$00
|
||||
LDX #$00
|
||||
:L1 STA OSFILECB,X
|
||||
INX
|
||||
CPX #18
|
||||
BNE :L1
|
||||
RTS
|
||||
|
||||
|
|
@ -0,0 +1,316 @@
|
|||
*********************************************************
|
||||
* AppleMOS Host Filing System
|
||||
* Routes MOS calls <-> ProDOS
|
||||
*********************************************************
|
||||
|
||||
* OSFIND - open/close a file for byte access
|
||||
FINDHND PHX
|
||||
PHY
|
||||
PHA
|
||||
STX ZP1 ; Points to filename
|
||||
STY ZP1+1
|
||||
CMP #$00 ; A=$00 = close
|
||||
BEQ :CLOSE
|
||||
PHA
|
||||
LDA #<MOSFILE+1
|
||||
STA ZP2
|
||||
LDA #>MOSFILE+1
|
||||
STA ZP2+1
|
||||
LDY #$00
|
||||
:L1 LDA (ZP1),Y
|
||||
>>> WRTMAIN
|
||||
STA (ZP2),Y
|
||||
>>> WRTAUX
|
||||
INY
|
||||
CMP #$0D ; Carriage return
|
||||
BNE :L1
|
||||
DEY
|
||||
>>> WRTMAIN
|
||||
STY MOSFILE ; Length (Pascal string)
|
||||
>>> WRTAUX
|
||||
PLA ; Recover options
|
||||
>>> XF2MAIN,OFILE
|
||||
:CLOSE >>> WRTMAIN
|
||||
STY MOSFILE ; Write file number
|
||||
>>> WRTAUX
|
||||
>>> XF2MAIN,CFILE
|
||||
OSFINDRET
|
||||
>>> ENTAUX
|
||||
PLY ; Value of A on entry
|
||||
CPY #$00 ; Was it close?
|
||||
BNE :S1
|
||||
TYA ; Preserve A for close
|
||||
:S1 PLY
|
||||
PLX
|
||||
RTS
|
||||
|
||||
* OSFSC - miscellanous file system calls
|
||||
OSFSC LDA #<OSFSCM
|
||||
LDY #>OSFSCM
|
||||
JSR PRSTR
|
||||
RTS
|
||||
OSFSCM ASC 'OSFSC.'
|
||||
DB $00
|
||||
|
||||
* OSGBPB - Get/Put a block of bytes to/from an open file
|
||||
GBPBHND LDA #<OSGBPBM
|
||||
LDY #>OSGBPBM
|
||||
JMP PRSTR
|
||||
OSGBPBM ASC 'OSGBPB.'
|
||||
DB $00
|
||||
|
||||
* OSBPUT - write one byte to an open file
|
||||
BPUTHND PHX
|
||||
PHY
|
||||
PHA ; Stash char to write
|
||||
>>> WRTMAIN
|
||||
STY MOSFILE ; File reference number
|
||||
>>> WRTAUX
|
||||
>>> XF2MAIN,FILEPUT
|
||||
OSBPUTRET
|
||||
>>> ENTAUX
|
||||
CLC ; Means no error
|
||||
PLA
|
||||
PLY
|
||||
PLX
|
||||
RTS
|
||||
|
||||
* OSBGET - read one byte from an open file
|
||||
BGETHND PHX
|
||||
PHY
|
||||
>>> WRTMAIN
|
||||
STY MOSFILE ; File ref number
|
||||
>>> WRTAUX
|
||||
>>> XF2MAIN,FILEGET
|
||||
OSBGETRET
|
||||
>>> ENTAUX
|
||||
CLC ; Means no error
|
||||
CPY #$00 ; Check error status
|
||||
BEQ :NOERR
|
||||
SEC ; Set carry for error
|
||||
BRA :EXIT
|
||||
:NOERR CLC
|
||||
:EXIT PLY
|
||||
PLX
|
||||
RTS
|
||||
|
||||
* OSARGS - adjust file arguments
|
||||
* On entry, A=action
|
||||
* X=>4 byte ZP control block
|
||||
* Y=file handle
|
||||
ARGSHND PHA
|
||||
PHX
|
||||
PHY
|
||||
CPY #$00
|
||||
BNE :HASFILE
|
||||
CMP #$00 ; Y=0,A=0 => current file sys
|
||||
BNE :S1
|
||||
PLY
|
||||
PLX
|
||||
PLA
|
||||
LDA #$09 ; Hosted filing system
|
||||
RTS
|
||||
:S1 CMP #$01 ; Y=0,A=1 => addr of CLI
|
||||
BNE :S2
|
||||
* TODO: Implement this for *RUN and *command
|
||||
JSR BEEP
|
||||
BRA :IEXIT
|
||||
:S2 CMP #$FF ; Y=0,A=FF => flush all files
|
||||
BNE :IEXIT
|
||||
>>> WRTMAIN
|
||||
STZ MOSFILE ; Zero means flush all
|
||||
>>> WRTAUX
|
||||
BRA :IFLUSH
|
||||
:HASFILE >>> WRTMAIN
|
||||
STY MOSFILE ; File ref num
|
||||
STX MOSFILE+1 ; Pointer to ZP control block
|
||||
>>> WRTAUX
|
||||
CMP #$00 ; Y!=0,A=0 => read seq ptr
|
||||
BNE :S3
|
||||
>>> WRTMAIN
|
||||
STZ MOSFILE+2 ; 0 means get pos
|
||||
>>> WRTAUX
|
||||
>>> XF2MAIN,TELL
|
||||
:IEXIT BRA :IEXIT2
|
||||
:IFLUSH BRA :FLUSH
|
||||
:S3 CMP #$01 ; Y!=0,A=1 => write seq ptr
|
||||
BNE :S4
|
||||
>>> WRTMAIN
|
||||
LDA $00,X
|
||||
STA MOSFILE+2
|
||||
LDA $01,X
|
||||
STA MOSFILE+3
|
||||
LDA $02,X
|
||||
STA MOSFILE+4
|
||||
>>> WRTAUX
|
||||
>>> XF2MAIN,SEEK
|
||||
:IEXIT2 BRA :EXIT
|
||||
:S4 CMP #$02 ; Y!=0,A=2 => read file len
|
||||
BNE :S5
|
||||
>>> WRTMAIN
|
||||
STA MOSFILE+2 ; Non-zero means get len
|
||||
>>> WRTAUX
|
||||
>>> XF2MAIN,TELL
|
||||
:S5 CMP #$FF ; Y!=0,A=FF => flush file
|
||||
BNE :EXIT
|
||||
:FLUSH >>> XF2MAIN,FLUSH
|
||||
:EXIT PLY
|
||||
PLX
|
||||
PLA
|
||||
RTS
|
||||
OSARGSRET
|
||||
>>> ENTAUX
|
||||
PLY
|
||||
PLX
|
||||
PLA
|
||||
RTS
|
||||
|
||||
* OSFILE - perform actions on entire files
|
||||
* On entry, A=action
|
||||
* XY=>control block
|
||||
* On exit, A=preserved if unimplemented
|
||||
* A=0 object not found (not load/save)
|
||||
* A=1 file found
|
||||
* A=2 directory found
|
||||
* XY preserved
|
||||
* control block updated
|
||||
FILEHND PHX
|
||||
PHY
|
||||
PHA
|
||||
|
||||
STX ZP1 ; LSB of parameter block
|
||||
STY ZP1+1 ; MSB of parameter block
|
||||
LDA #<FILEBLK
|
||||
STA ZP2
|
||||
LDA #>FILEBLK
|
||||
STA ZP2+1
|
||||
LDY #$00 ; Copy to FILEBLK in main mem
|
||||
:L1 LDA (ZP1),Y
|
||||
>>> WRTMAIN
|
||||
STA (ZP2),Y
|
||||
>>> WRTAUX
|
||||
INY
|
||||
CPY #$12
|
||||
BNE :L1
|
||||
|
||||
LDA (ZP1) ; Pointer to filename->ZP2
|
||||
STA ZP2
|
||||
LDY #$01
|
||||
LDA (ZP1),Y
|
||||
STA ZP2+1
|
||||
LDA #<MOSFILE+1 ; ZP1 is dest pointer
|
||||
STA ZP1
|
||||
LDA #>MOSFILE+1
|
||||
STA ZP1+1
|
||||
LDA (ZP2) ; Look at first char of filename
|
||||
CMP #'9'+1
|
||||
BCS :NOTDIGT
|
||||
CMP #'0'
|
||||
BCC :NOTDIGT
|
||||
LDA #'N' ; Prefix numeric with 'N'
|
||||
>>> WRTMAIN
|
||||
STA (ZP1)
|
||||
>>> WRTAUX
|
||||
LDY #$01 ; Increment Y
|
||||
DEC ZP2 ; Decrement source pointer
|
||||
LDA ZP2
|
||||
CMP #$FF
|
||||
BNE :L2
|
||||
DEC ZP2+1
|
||||
BRA :L2
|
||||
:NOTDIGT LDY #$00
|
||||
:L2 LDA (ZP2),Y
|
||||
>>> WRTMAIN
|
||||
STA (ZP1),Y
|
||||
>>> WRTAUX
|
||||
INY
|
||||
CMP #$21 ; Space or Carriage return
|
||||
BCS :L2
|
||||
DEY
|
||||
>>> WRTMAIN
|
||||
STY MOSFILE ; Length (Pascal string)
|
||||
>>> WRTAUX
|
||||
|
||||
PLA ; Get action back
|
||||
PHA
|
||||
BEQ :S1 ; A=00 -> SAVE
|
||||
CMP #$FF
|
||||
BEQ :S2 ; A=FF -> LOAD
|
||||
|
||||
LDA #<OSFILEM ; If not implemented, print msg
|
||||
LDY #>OSFILEM
|
||||
JSR PRSTR
|
||||
PLA
|
||||
PHA
|
||||
JSR OUTHEX
|
||||
LDA #<OSFILEM2
|
||||
LDY #>OSFILEM2
|
||||
JSR PRSTR
|
||||
PLA ; Not implemented, return unchanged
|
||||
PLY
|
||||
PLX
|
||||
RTS
|
||||
:S1 >>> XF2MAIN,SAVEFILE
|
||||
:S2 >>> XF2MAIN,LOADFILE
|
||||
OSFILERET
|
||||
>>> ENTAUX
|
||||
PLY ; Value of A on entry
|
||||
CPY #$FF ; LOAD
|
||||
BNE :S4 ; Deal with return from SAVE
|
||||
|
||||
CMP #$01 ; No file found
|
||||
BNE :SL1
|
||||
BRK
|
||||
DB $D6 ; $D6 = Object not found
|
||||
ASC 'File not found'
|
||||
BRK
|
||||
|
||||
:SL1 CMP #$02 ; Read error
|
||||
BNE :SL2
|
||||
BRK
|
||||
DB $CA ; $CA = Premature end, 'Data lost'
|
||||
ASC 'Read error'
|
||||
BRK
|
||||
|
||||
:SL2 LDA #$01 ; Return code - file found
|
||||
BRA :EXIT
|
||||
|
||||
:S4 CPY #$00 ; Return from SAVE
|
||||
BNE :S6
|
||||
CMP #$01 ; Unable to create or open
|
||||
BNE :SS1
|
||||
BRK
|
||||
DB $C0 ; $C0 = Can't create file to save
|
||||
ASC 'Can'
|
||||
DB $27
|
||||
ASC 't save file'
|
||||
BRK
|
||||
|
||||
:SS1 CMP #$02 ; Unable to write
|
||||
BNE :S6
|
||||
BRK
|
||||
DB $CA ; $CA = Premature end, 'Data lost'
|
||||
ASC 'Write error'
|
||||
BRK
|
||||
|
||||
:S6 LDA #$00
|
||||
:EXIT PLY
|
||||
PLX
|
||||
RTS
|
||||
|
||||
OSFILEM ASC 'OSFILE($'
|
||||
DB $00
|
||||
OSFILEM2 ASC ')'
|
||||
DB $00
|
||||
|
||||
* Performs OSBYTE $7F EOF function
|
||||
* File ref number is in X
|
||||
CHKEOF >>> WRTMAIN
|
||||
STX MOSFILE ; File reference number
|
||||
>>> WRTAUX
|
||||
>>> XF2MAIN,FILEEOF
|
||||
CHKEOFRET
|
||||
>>> ENTAUX
|
||||
TAX ; Return code -> X
|
||||
RTS
|
||||
|
||||
|
|
@ -0,0 +1,164 @@
|
|||
**********************************************************
|
||||
* Interrupt Handlers, MOS redirection vectors etc.
|
||||
**********************************************************
|
||||
|
||||
* IRQ/BRK handler
|
||||
IRQBRKHDLR
|
||||
PHA
|
||||
>>> WRTMAIN
|
||||
STA $45 ; A->$45 for ProDOS IRQ handlers
|
||||
>>> WRTAUX
|
||||
TXA
|
||||
PHA
|
||||
CLD
|
||||
TSX
|
||||
LDA $103,X ; Get PSW from stack
|
||||
AND #$10
|
||||
BEQ :IRQ ; IRQ
|
||||
SEC
|
||||
LDA $0104,X
|
||||
SBC #$01
|
||||
STA FAULT
|
||||
LDA $0105,X
|
||||
SBC #$00
|
||||
STA FAULT+1
|
||||
PLA
|
||||
TAX
|
||||
PLA
|
||||
CLI
|
||||
JMP (BRKV) ; Pass on to BRK handler
|
||||
|
||||
:IRQ >>> XF2MAIN,A2IRQ
|
||||
IRQBRKRET
|
||||
PLA ; TODO: Pass on to IRQ1V
|
||||
TAX
|
||||
PLA
|
||||
NULLRTI RTI
|
||||
|
||||
PRERR LDY #$01
|
||||
PRERRLP LDA (FAULT),Y
|
||||
BEQ PRERR1
|
||||
JSR OSWRCH
|
||||
INY
|
||||
BNE PRERRLP
|
||||
NULLRTS
|
||||
PRERR1 RTS
|
||||
|
||||
MOSBRKHDLR LDA #<MSGBRK
|
||||
LDY #>MSGBRK
|
||||
JSR PRSTR
|
||||
JSR PRERR
|
||||
JSR OSNEWL
|
||||
JSR OSNEWL
|
||||
STOP JMP STOP ; Cannot return from a BRK
|
||||
|
||||
MSGBRK DB $0D
|
||||
ASC "ERROR: "
|
||||
DB $00
|
||||
|
||||
RDROM LDA #<OSRDRMM
|
||||
LDY #>OSRDRMM
|
||||
JMP PRSTR
|
||||
OSRDRMM ASC 'OSRDDRM.'
|
||||
DB $00
|
||||
|
||||
EVENT LDA #<OSEVENM
|
||||
LDY #>OSEVENM
|
||||
JMP PRSTR
|
||||
OSEVENM ASC 'OSEVEN.'
|
||||
DB $00
|
||||
|
||||
GSINTGO LDA #<OSINITM
|
||||
LDY #>OSINITM
|
||||
JMP PRSTR
|
||||
OSINITM ASC 'GSINITM.'
|
||||
DB $00
|
||||
|
||||
GSRDGO LDA #<OSREADM
|
||||
LDY #>OSREADM
|
||||
JMP PRSTR
|
||||
OSREADM ASC 'GSREAD.'
|
||||
DB $00
|
||||
|
||||
* Default page 2 contents
|
||||
DEFVEC DW NULLRTS ; $200 USERV
|
||||
DW MOSBRKHDLR ; $202 BRKV
|
||||
DW NULLRTI ; $204 IRQ1V
|
||||
DW NULLRTI ; $206 IRQ2V
|
||||
DW CLIHND ; $208 CLIV
|
||||
DW BYTEHND ; $20A BYTEV
|
||||
DW WORDHND ; $20C WORDV
|
||||
DW WRCHHND ; $20E WRCHV
|
||||
DW RDCHHND ; $210 RDCHV
|
||||
DW FILEHND ; $212 FILEV
|
||||
DW ARGSHND ; $214 ARGSV
|
||||
DW BGETHND ; $216 BGETV
|
||||
DW BPUTHND ; $218 BPUTV
|
||||
DW GBPBHND ; $21A GBPBV
|
||||
DW FINDHND ; $21C FINDV
|
||||
DW NULLRTS ; $21E FSCV
|
||||
ENDVEC
|
||||
|
||||
*
|
||||
* Acorn MOS entry points at the top of RAM
|
||||
* Copied from loaded code to high memory
|
||||
*
|
||||
|
||||
MOSVEC ; Base of API entries here in loaded code
|
||||
MOSAPI EQU $FFB6 ; Real base of API entries in real memory
|
||||
ORG MOSAPI
|
||||
|
||||
* OPTIONAL ENTRIES
|
||||
* ----------------
|
||||
*OSSERV JMP NULLRTS ; FF95 OSSERV
|
||||
*OSCOLD JMP NULLRTS ; FF98 OSCOLD
|
||||
*OSPRSTR JMP OUTSTR ; FF9B PRSTRG
|
||||
*OSFF9E JMP NULLRTS ; FF9E
|
||||
*OSSCANHEX JMP RDHEX ; FFA1 SCANHX
|
||||
*OSFFA4 JMP NULLRTS ; FFA4
|
||||
*OSFFA7 JMP NULLRTS ; FFA7
|
||||
*PRHEX JMP OUTHEX ; FFAA PRHEX
|
||||
*PR2HEX JMP OUT2HEX ; FFAD PR2HEX
|
||||
*OSFFB0 JMP NULLRTS ; FFB0
|
||||
*OSWRRM JMP NULLRTS ; FFB3 OSWRRM
|
||||
|
||||
* COMPULSORY ENTRIES
|
||||
* ------------------
|
||||
VECSIZE DB ENDVEC-DEFVEC ; FFB6 VECSIZE Size of vectors
|
||||
VECBASE DW DEFVEC ; FFB7 VECBASE Base of default vectors
|
||||
OSRDRM JMP RDROM ; FFB9 OSRDRM Read byte from paged ROM
|
||||
OSCHROUT JMP OUTCHAR ; FFBC CHROUT Send char to VDU driver
|
||||
OSEVEN JMP EVENT ; FFBF OSEVEN Signal an event
|
||||
GSINIT JMP GSINTGO ; FFC2 GSINIT Init string reading
|
||||
GSREAD JMP GSRDGO ; FFC5 GSREAD Parse general string
|
||||
NVWRCH JMP WRCHHND ; FFC8 NVWRCH Nonvectored WRCH
|
||||
NVRDCH JMP RDCHHND ; FFCB NVRDCH Nonvectored RDCH
|
||||
OSFIND JMP (FINDV) ; FFCE OSFIND
|
||||
OSGBPB JMP (GBPBV) ; FFD1 OSGBPB
|
||||
OSBPUT JMP (BPUTV) ; FFD4 OSBPUT
|
||||
OSBGET JMP (BGETV) ; FFD7 OSBGET
|
||||
OSARGS JMP (ARGSV) ; FFDA OSARGS
|
||||
OSFILE JMP (FILEV) ; FFDD OSFILE
|
||||
OSRDCH JMP (RDCHV) ; FFE0 OSRDCH
|
||||
OSASCI CMP #$0D ; FFE3 OSASCI
|
||||
BNE OSWRCH
|
||||
OSNEWL LDA #$0A ; FFE7 OSNEWL
|
||||
JSR OSWRCH
|
||||
OSWRCR LDA #$0D ; FFEC OSWRCR
|
||||
OSWRCH JMP (WRCHV) ; FFEE OSWRCH
|
||||
OSWORD JMP (WORDV) ; FFF1 OSWORD
|
||||
OSBYTE JMP (BYTEV) ; FFF4 OSBYTE
|
||||
OSCLI JMP (CLIV) ; FFF7 OSCLI
|
||||
NMIVEC DW NULLRTI ; FFFA NMIVEC
|
||||
RSTVEC DW STOP ; FFFC RSTVEC
|
||||
IRQVEC
|
||||
|
||||
* Assembler doesn't like running up to $FFFF, so we bodge a bit
|
||||
MOSEND
|
||||
ORG MOSEND-MOSAPI+MOSVEC
|
||||
DW IRQBRKHDLR ; FFFE IRQVEC
|
||||
MOSVEND
|
||||
|
||||
* Buffer for one 512 byte disk block in aux mem
|
||||
AUXBLK DS $200
|
||||
|
||||
|
|
@ -0,0 +1,199 @@
|
|||
*********************************************************
|
||||
* Kernel / Misc
|
||||
*********************************************************
|
||||
|
||||
* OSWRCH handler
|
||||
* All registers preserved
|
||||
WRCHHND PHA
|
||||
PHX
|
||||
PHY
|
||||
* TODO Check any output redirections
|
||||
* TODO Check any spool output
|
||||
JSR OUTCHAR
|
||||
* TODO Check any printer output
|
||||
PLY
|
||||
PLX
|
||||
PLA
|
||||
RTS
|
||||
|
||||
* OSRDCH handler
|
||||
* All registers preserved except A, carry
|
||||
* Read a character from the keyboard
|
||||
RDCHHND PHX
|
||||
PHY
|
||||
JSR GETCHRC
|
||||
STA OLDCHAR
|
||||
:L1 LDA CURS+1 ; Skip unless CURS=$8000
|
||||
CMP #$80
|
||||
BNE :S1
|
||||
LDA CURS
|
||||
BNE :S1
|
||||
STZ CURS
|
||||
STZ CURS+1
|
||||
LDA CSTATE
|
||||
ROR
|
||||
BCS :S2
|
||||
LDA #'_'
|
||||
BRA :S3
|
||||
:S2 LDA OLDCHAR
|
||||
:S3 JSR PRCHRC
|
||||
INC CSTATE
|
||||
:S1 INC CURS
|
||||
BNE :S4
|
||||
INC CURS+1
|
||||
:S4 LDA $C000 ; Keyboard data/strobe
|
||||
BPL :L1
|
||||
LDA OLDCHAR ; Erase cursor
|
||||
JSR PRCHRC
|
||||
LDA $C000
|
||||
AND #$7F
|
||||
STA $C010 ; Clear strobe
|
||||
PLY
|
||||
PLX
|
||||
CMP #$1B ; Escape pressed?
|
||||
BNE :S5
|
||||
SEC ; Return CS
|
||||
ROR ESCFLAG
|
||||
SEC
|
||||
RTS
|
||||
:S5 CLC
|
||||
RTS
|
||||
CURS DW $0000 ; Counter
|
||||
CSTATE DB $00 ; Cursor on or off
|
||||
OLDCHAR DB $00 ; Char under cursor
|
||||
|
||||
* Performs OSBYTE $80 function
|
||||
* Read ADC channel or get buffer status
|
||||
OSBYTE80 CPX #$00 ; X=0 Last ADC channel
|
||||
BNE :S1
|
||||
LDX #$00 ; Fire button
|
||||
LDY #$00 ; ADC never converted
|
||||
RTS
|
||||
:S1 BMI :S2
|
||||
LDX #$00 ; X +ve, ADC value
|
||||
LDY #$00
|
||||
RTS
|
||||
:S2 CPX #$FF ; X $FF = keyboard buf
|
||||
BEQ :INPUT
|
||||
CPX #$FE ; X $FE = RS423 i/p buf
|
||||
BEQ :INPUT
|
||||
LDX #$FF ; Spaced remaining in o/p
|
||||
RTS
|
||||
:INPUT LDX #$00 ; Nothing in input buf
|
||||
RTS
|
||||
|
||||
* Performs OSBYTE $81 INKEY$ function
|
||||
* X,Y has time limit
|
||||
* On exit, CC, Y=$00, X=key - key pressed
|
||||
* CS, Y=$FF - timeout
|
||||
* CS, Y=$1B - escape
|
||||
GETKEY TYA
|
||||
BMI NEGKEY ; Negative INKEY
|
||||
:L1 CPX #$00
|
||||
BEQ :S1
|
||||
LDA $C000 ; Keyb data/strobe
|
||||
AND #$80
|
||||
BNE :GOTKEY
|
||||
JSR DELAY ; 1/100 sec
|
||||
DEX
|
||||
BRA :L1
|
||||
:S1 CPY #$00
|
||||
BEQ :S2
|
||||
DEY
|
||||
LDX #$FF
|
||||
BRA :L1
|
||||
:S2 LDA $C000 ; Keyb data/strobe
|
||||
AND #$80
|
||||
BNE :GOTKEY
|
||||
LDY #$FF ; No key, time expired
|
||||
SEC
|
||||
RTS
|
||||
:GOTKEY LDA $C000 ; Fetch char
|
||||
AND #$7F
|
||||
STA $C010 ; Clear strobe
|
||||
CMP #27 ; Escape
|
||||
BEQ :ESC
|
||||
TAX
|
||||
LDY #$00
|
||||
CLC
|
||||
RTS
|
||||
:ESC ROR ESCFLAG
|
||||
LDY #27 ; Escape
|
||||
SEC
|
||||
RTS
|
||||
NEGKEY LDX #$00 ; Unimplemented
|
||||
LDY #$00
|
||||
RTS
|
||||
|
||||
***********************************************************
|
||||
* Helper functions
|
||||
***********************************************************
|
||||
|
||||
* Beep
|
||||
BEEP PHA
|
||||
PHX
|
||||
LDX #$80
|
||||
:L1 LDA $C030
|
||||
JSR DELAY
|
||||
INX
|
||||
BNE :L1
|
||||
PLX
|
||||
PLA
|
||||
RTS
|
||||
|
||||
* Delay approx 1/100 sec
|
||||
DELAY PHX
|
||||
PHY
|
||||
LDX #$00
|
||||
:L1 INX ; 2
|
||||
LDY #$00 ; 2
|
||||
:L2 INY ; 2
|
||||
CPY #$00 ; 2
|
||||
BNE :L2 ; 3 (taken)
|
||||
CPX #$02 ; 2
|
||||
BNE :L1 ; 3 (taken)
|
||||
PLY
|
||||
PLX
|
||||
RTS
|
||||
|
||||
* Print string pointed to by X,Y to the screen
|
||||
OUTSTR TXA
|
||||
|
||||
* Print string pointed to by A,Y to the screen
|
||||
PRSTR STA OSTEXT+0 ; String in A,Y
|
||||
STY OSTEXT+1
|
||||
:L1 LDA (OSTEXT) ; Ptr to string in OSTEXT
|
||||
BEQ :S1
|
||||
JSR OSASCI
|
||||
INC OSTEXT
|
||||
BNE :L1
|
||||
INC OSTEXT+1
|
||||
BRA :L1
|
||||
:S1 RTS
|
||||
|
||||
* Print XY in hex
|
||||
OUT2HEX TYA
|
||||
JSR OUTHEX
|
||||
TAX ; Continue into OUTHEX
|
||||
|
||||
* Print hex byte in A
|
||||
OUTHEX PHA
|
||||
LSR
|
||||
LSR
|
||||
LSR
|
||||
LSR
|
||||
AND #$0F
|
||||
JSR PRNIB
|
||||
PLA
|
||||
AND #$0F ; Continue into PRNIB
|
||||
|
||||
* Print hex nibble in A
|
||||
PRNIB CMP #$0A
|
||||
BCC :S1
|
||||
CLC ; >= $0A
|
||||
ADC #'A'-$0A
|
||||
JSR OSWRCH
|
||||
RTS
|
||||
:S1 ADC #'0' ; < $0A
|
||||
JMP OSWRCH
|
||||
|
||||
|
|
@ -0,0 +1,63 @@
|
|||
* AUX.MOS.WS.S
|
||||
* (c) Bobbi 2021 GPLv3
|
||||
|
||||
***********************************************************
|
||||
* Acorn MOS Workspace Locations
|
||||
***********************************************************
|
||||
|
||||
* $00-$8F Language workspace
|
||||
* $90-$9F Network workspace
|
||||
* $A0-$A7 NMI workspace
|
||||
* $A8-$AF Non-MOS *command workspace
|
||||
* $B0-$BF Temporary filing system workspace
|
||||
* $C0-$CF Persistant filing system workspace
|
||||
* $D0-$DF VDU driver workspace
|
||||
* $E0-$EE Internal MOS workspace
|
||||
* $EF-$FF MOS API workspace
|
||||
|
||||
FSFLAG1 EQU $E2
|
||||
FSFLAG2 EQU $E3
|
||||
GSFLAG EQU $E4
|
||||
GSCHAR EQU $E5
|
||||
OSTEXT EQU $E6
|
||||
MAXLEN EQU OSTEXT+2 ; $E8
|
||||
MINCHAR EQU OSTEXT+3 ; $E9
|
||||
MAXCHAR EQU OSTEXT+4 ; $EA
|
||||
OSTEMP EQU $EB
|
||||
OSKBD1 EQU $EC ; Kbd workspace
|
||||
OSKBD2 EQU $ED
|
||||
OSKBD3 EQU $EE
|
||||
OSAREG EQU $EF
|
||||
OSXREG EQU OSAREG+1 ; $F0
|
||||
OSYREG EQU OSXREG+1 ; $F1
|
||||
OSCTRL EQU OSXREG
|
||||
OSLPTR EQU $F2
|
||||
*
|
||||
OSINTWS EQU $FA ; IRQ ZP pointer
|
||||
OSINTA EQU $FC ; IRQ A-reg store
|
||||
FAULT EQU $FD ; Error message pointer
|
||||
ESCFLAG EQU $FF ; Escape status
|
||||
|
||||
* $0200-$0235 Vectors
|
||||
* $0236-$028F OSBYTE variables
|
||||
* $0290-$02ED
|
||||
* $02EE-$02FF MOS control block
|
||||
|
||||
USERV EQU $200 ; USER vector
|
||||
BRKV EQU $202 ; BRK vector
|
||||
CLIV EQU $208 ; OSCLI vector
|
||||
BYTEV EQU $20A ; OSBYTE vector
|
||||
WORDV EQU $20C ; OSWORD vector
|
||||
WRCHV EQU $20E ; OSWRCH vector
|
||||
RDCHV EQU $210 ; OSRDCH vector
|
||||
FILEV EQU $212 ; OSFILE vector
|
||||
ARGSV EQU $214 ; OSARGS vector
|
||||
BGETV EQU $216 ; OSBGET vector
|
||||
BPUTV EQU $218 ; OSBPUT vector
|
||||
GBPBV EQU $21A ; OSGBPB vector
|
||||
FINDV EQU $21C ; OSFIND vector
|
||||
FSCV EQU $21E ; FSCV misc file ops
|
||||
|
||||
OSFILECB EQU $2EE ; OSFILE control block
|
||||
|
||||
|
||||
|
|
@ -0,0 +1,398 @@
|
|||
************************
|
||||
* OSWORD/OSBYTE dispatch
|
||||
************************
|
||||
|
||||
BYTELOW EQU $01 ; (BWLOW-BWADDR)/2-1 Max low OSBYTE
|
||||
BYTEHIGH EQU $7C ; First high OSBYTE
|
||||
BYTEMAX EQU $87 ; (BWTOP-BWLOW)/2+BYTEHIGH-1
|
||||
WORDOFF EQU $0C ; Word offset to start OSWORD tbl
|
||||
WORDMAX EQU $06 ; (OSWEND-OSWBASE)/2-1 Max OSWORD
|
||||
|
||||
* OSWORD:
|
||||
* On entry, A=action
|
||||
* XY=>control block
|
||||
* On exit, A=preserved
|
||||
* X,Y,Cy trashed (except OSWORD 0)
|
||||
* control block updated
|
||||
*
|
||||
WORDHND PHA
|
||||
PHP
|
||||
SEI
|
||||
STA OSAREG ; Store registers
|
||||
STX OSCTRL+0 ; Point to control block
|
||||
STY OSCTRL+1
|
||||
LDX #$08 ; X=SERVWORD
|
||||
CMP #$E0 ; User OSWORD
|
||||
BCS WORDGO1
|
||||
CMP #WORDMAX+1
|
||||
BCS BWFAIL ; Pass on to service call
|
||||
ADC #WORDOFF
|
||||
BCC BWCALL ; Call OSWORD routine
|
||||
WORDGO1 LDA #WORDOFF+WORDMAX+1
|
||||
BCS BWCALL ; Call User OSWORD routine
|
||||
|
||||
* OSBYTE:
|
||||
* On entry, A=action
|
||||
* X=first parameter
|
||||
* Y=second parameter if A>$7F
|
||||
* On exit, A=preserved
|
||||
* X=first returned result
|
||||
* Y=second returned result if A>$7F
|
||||
* Cy=any returned status if A>$7F
|
||||
*
|
||||
BYTEHND PHA
|
||||
PHP
|
||||
SEI
|
||||
STA OSAREG ; Store registers
|
||||
STX OSXREG
|
||||
STY OSYREG
|
||||
LDX #$07 ; X=SERVBYTE
|
||||
CMP #$A6
|
||||
BCS BYTEGO1 ; OSBYTE &A6+
|
||||
CMP #BYTEMAX+1
|
||||
BCS BWFAIL ; Pass on to service call
|
||||
CMP #BYTEHIGH
|
||||
BCS BYTEGO2 ; High OSBYTEs
|
||||
CMP #BYTELOW+1
|
||||
BCS BWFAIL ; Pass on to service call
|
||||
STZ OSYREG ; Prepare Y=0 for low OSBYTEs
|
||||
BCC BYTEGO3
|
||||
|
||||
BYTEGO1 LDA #BYTEMAX+1 ; Index for BYTEVAR
|
||||
BYTEGO2 SBC #BYTEHIGH-BYTELOW-1 ; Reduce OSBYTE number
|
||||
BYTEGO3 ORA #$80 ; Will become CS=OSBYTE call
|
||||
|
||||
BWCALL ASL A ; Index into dispatch table
|
||||
TAY ; Y=offset into dispatch table
|
||||
* BIT FXNETCLAIM ; Check Econet intercept flag
|
||||
* BPL BWNONET ; No intercept, skip past
|
||||
* TXA ; Set A=BYTE or WORD call
|
||||
* CLV ; Clear V
|
||||
* JSR CALLNET ; Call Econet with X=call type
|
||||
* BVS BWEXIT ; V set, claimed by NETV, return
|
||||
|
||||
BWNONET LDA BWADDR+1,Y ; Get routine address
|
||||
STA OSINTWS+1
|
||||
LDA BWADDR+0,Y
|
||||
STA OSINTWS+0
|
||||
LDA OSAREG ; Get A parameter back
|
||||
LDY OSYREG ; Get Y parameter back
|
||||
LDX OSXREG ; Get X parameter, set EQ from it
|
||||
BCS BYTWRDGO ; Skip if OSBYTE call
|
||||
LDY #$00 ; OSWORD call, enter with Y=0
|
||||
LDA (OSCTRL),Y ; and A=first byte in CB, set EQ from it
|
||||
SEC ; Enter routine with CS
|
||||
BYTWRDGO JSR JMPADDR ; Call the routine
|
||||
|
||||
* Routines are entered with:
|
||||
* A=OSBYTE call or first byte of OSWORD control block
|
||||
* X=X parameter
|
||||
* Y=OSBYTE Y parameter for A>$7F
|
||||
* Y=$00 for OSBYTE A<$80
|
||||
* Y=$00 for OSWORD so (OSCTRL),Y => first byte
|
||||
* Carry Set
|
||||
* EQ set from OSBYTE X or from OSWORD first byte
|
||||
* X,Y,Cy from routine returned to caller
|
||||
|
||||
BWEXIT ROR A ; Move Carry to A
|
||||
PLP ; Restore original flags
|
||||
ROL A ; Move Carry back to flags
|
||||
PLA ; Restore A
|
||||
CLV ; Clear V = Actioned
|
||||
RTS
|
||||
|
||||
BWFAIL
|
||||
* JSR SERVICE ; Offer to sideways ROMs
|
||||
* LDX OSXREG ; Get returned X
|
||||
* CMP #$00
|
||||
* BEQ BWEXIT ; Claimed, return
|
||||
JSR UNSUPPBW ; *DEBUG*
|
||||
LDX #$FF ; X=&FF if unclaimed (normally set within SERVICE)
|
||||
PLP ; Restore IRQs
|
||||
PLA ; Restore A
|
||||
BIT SETV ; Set V = Not actioned
|
||||
RTS
|
||||
|
||||
SETV ; JMP() is $6C, bit 6 set, use to set V
|
||||
JMPADDR JMP (OSINTWS)
|
||||
|
||||
|
||||
*************************
|
||||
* OSBYTE DISPATCH TABLE *
|
||||
*************************
|
||||
|
||||
BWADDR DW BYTE00 ; OSBYTE 0 - Machine host
|
||||
* DW BYTE01 ; OSBYTE 1 - User flag
|
||||
* DW BYTE02 ; OSBYTE 2 - OSRDCH source
|
||||
* DW BYTE03 ; OSBYTE 3 - OSWRCH dest
|
||||
* DW BYTE04 ; OSBYTE 4 - Cursor keys
|
||||
BWLOW
|
||||
DW BYTE7C ; OSBYTE 124 - Clear Escape
|
||||
DW BYTE7D ; OSBYTE 125 - Set Escape
|
||||
DW BYTE7E ; OSBYTE 126 - Ack. Escape
|
||||
DW BYTE7F ; OSBYTE 127 - Read EOF
|
||||
DW BYTE80 ; OSBYTE 128 - ADVAL
|
||||
DW BYTE81 ; OSBYTE 129 - INKEY
|
||||
DW BYTE82 ; OSBYTE 130 - Memory high word
|
||||
DW BYTE83 ; OSBYTE 131 - MEMBOT
|
||||
DW BYTE84 ; OSBYTE 132 - MEMTOP
|
||||
DW BYTE85 ; OSBYTE 133 - MEMTOP for MODE
|
||||
DW BYTE86 ; OSBYTE 134 - POS, VPOS
|
||||
DW BYTE87 ; OSBYTE 135 - Character, MODE
|
||||
* DW BYTE88 ; OSBYTE 136 - *CODE
|
||||
* DW BYTE89 ; OSBYTE 137 - *MOTOR
|
||||
* DW BYTE8A ; OSBYTE 138 - Buffer insert
|
||||
* DW BYTE8B ; OSBYTE 139 - *OPT
|
||||
* DW BYTE8C ; OSBYTE 140 - *TAPE
|
||||
* DW BYTE8D ; OSBYTE 141 - *ROM
|
||||
* DW BYTE8E ; OSBYTE 142 - Enter language
|
||||
* DW BYTE8F ; OSBYTE 143 - Service call
|
||||
BWTOP
|
||||
DW BYTEVAR ; OSBYTE 166+ - R/W OSBYTE var
|
||||
|
||||
*************************
|
||||
* OSWORD DISPATCH TABLE *
|
||||
*************************
|
||||
OSWBASE DW WORD00 ; OSWORD 0 - Read input line
|
||||
DW WORD01 ; OSWORD 1 - Read elapsed time
|
||||
DW WORD02 ; OSWORD 2 - Write eleapsed time
|
||||
DW WORD03 ; OSWORD 3 - Read interval timer
|
||||
DW WORD04 ; OSWORD 4 - Write interval timer
|
||||
DW WORD05 ; OSWORD 5 - Read I/O memory
|
||||
DW WORD06 ; OSWORD 6 - Write I/O memory
|
||||
* DW WORD07 ; OSWORD 7 - SOUND
|
||||
* DW WORD08 ; OSWORD 8 - ENVELOPE
|
||||
* DW WORD09 ; OSWORD 9 - POINT
|
||||
* DW WORD0A ; OSWORD 10 - Read character bitmap
|
||||
* DW WORD0B ; OSWORD 11 - Read palette
|
||||
* DW WORD0C ; OSWORD 12 - Write palette
|
||||
* DW WORD0D ; OSWORD 13 - Read coordinates
|
||||
OSWEND
|
||||
DW WORDE0 ; OSWORD &E0+ - User OSWORD
|
||||
|
||||
* OSWORD &00 - Read a line of input
|
||||
***********************************
|
||||
* On entry, (OSCTRL)=>control block
|
||||
* Y=0, A=(OSCTRL)
|
||||
* On exit, Y=length of line, offset to <cr>
|
||||
* CC = Ok, CS = Escape
|
||||
*
|
||||
|
||||
WORD00 STZ ESCFLAG ;;;; DEBUG HACK
|
||||
IF MAXLEN-OSTEXT-2
|
||||
LDY #$04
|
||||
:WORD00LP1 LDA (OSCTRL),Y ; Copy MAXLEN, MINCH, MAXCH to workspace
|
||||
STA MAXLEN-2,Y
|
||||
DEY
|
||||
CPY #$02
|
||||
BCS :WORD00LP1
|
||||
:WORD00LP2 LDA (OSCTRL),Y ; (OSTEXT)=>line buffer
|
||||
STA OSTEXT,Y
|
||||
DEY
|
||||
BPL :WORD00LP2
|
||||
INY ; Initial line length = zero
|
||||
ELSE
|
||||
LDA (OSCTRL),Y ; Copy control block
|
||||
STA OSTEXT,Y ; 0,1 => text
|
||||
INY ; 2 = MAXLEN
|
||||
CPY #$05 ; 3 = MINCHAR
|
||||
BCC WORD00 ; 4 = MAXCHAR
|
||||
LDY #$00 ; Initial line length = zero
|
||||
FIN
|
||||
* STY FXLINES ; Reset line counter
|
||||
CLI
|
||||
BEQ :WORD00LP ; Enter main loop
|
||||
|
||||
:WORD00BELL LDA #$07 ; $07=BELL
|
||||
DEY ; Balance next INY
|
||||
:WORD00NEXT INY ; Step to next character
|
||||
:WORD00ECHO JSR OSWRCH ; Print character
|
||||
|
||||
:WORD00LP JSR OSRDCH
|
||||
BCS :WORD00ESC ; Escape
|
||||
* TAX ; Save character in X for a mo
|
||||
* LDA FXVAR03 ; Get FX3 destination
|
||||
* ROR A
|
||||
* ROR A ; Move bit 1 into Carry
|
||||
* TXA ; Get character back
|
||||
* BCS :WORD00TEST ; VDU disabled, ignore VDU queue
|
||||
* LDX FXVDUQLEN ; Get length of VDU queue
|
||||
* BNE :WORD00ECHO ; Not zero, just print and loop
|
||||
:WORD00TEST CMP #$7F ; Delete
|
||||
BNE :WORD00CHAR
|
||||
CPY #$00
|
||||
BEQ :WORD00LP ; Nothing to delete
|
||||
DEY ; Back up one character
|
||||
BCS :WORD00ECHO ; Loop back to print DEL
|
||||
:WORD00CHAR CMP #$15 ; Ctrl-U
|
||||
BNE :WORD00INS ; No, insert character
|
||||
LDA #$7F ; Delete character
|
||||
INY ; Balance first DEY
|
||||
:WORD00ALL DEY ; Back up one character
|
||||
BEQ :WORD00LP ; Beginning of line
|
||||
JSR OSWRCH ; Print DELETE
|
||||
JMP :WORD00ALL ; Loop to delete all
|
||||
:WORD00INS STA (OSTEXT),Y ; Store the character
|
||||
CMP #$0D
|
||||
BEQ :WORD00CR ; CR - Done
|
||||
CPY MAXLEN
|
||||
BCS :WORD00BELL ; Too long, beep
|
||||
CMP MINCHAR
|
||||
BCC :WORD00ECHO ; <MINCHAR, don't step to next
|
||||
CMP MAXCHAR
|
||||
BCC :WORD00NEXT ; <MAXCHAR, step to next
|
||||
BEQ :WORD00NEXT ; =MAXCHAR, step to next
|
||||
BCS :WORD00ECHO ; >MAXCHAR, don't step to next
|
||||
|
||||
:WORD00CR JSR OSNEWL
|
||||
* JSR CALLNET ; Call Econet Vector with A=13
|
||||
:WORD00ESC LDA ESCFLAG ; Get Escape flag
|
||||
ROL A ; Carry=Escape state
|
||||
RTS
|
||||
|
||||
* OSWORD &01 - Read elapsed time
|
||||
* OSWORD &02 - Write elapsed time
|
||||
* OSWORD &03 - Read countdown timer
|
||||
* OSWORD &04 - Write countdown timer
|
||||
************************************
|
||||
* On entry, (OSCTRL)=>control block
|
||||
* Y=0
|
||||
|
||||
WORD01 TYA ; Dummy, just return zero
|
||||
:WORD01LP STA (OSCTRL),Y
|
||||
INY
|
||||
CPY #$05
|
||||
BCC :WORD01LP
|
||||
WORD04
|
||||
WORD03
|
||||
WORD02 RTS ; Dummy, do nothing
|
||||
|
||||
* OSWORD &05 - Read I/O memory
|
||||
* OSWORD &06 - Write I/O memory
|
||||
***********************************
|
||||
* On entry, (OSCTRL)+0 address
|
||||
* (OSCTRL)+4 byte read or written
|
||||
* Y=0, A=(OSCTRL)
|
||||
|
||||
WORD05 JSR GETADDR ; Point to address, set X and Y
|
||||
; needs to switch to main memory
|
||||
LDA (OSINTWS) ; Get byte
|
||||
; needs to switch back
|
||||
STA (OSCTRL),Y ; Store it
|
||||
RTS
|
||||
WORD06 JSR GETADDR ; Point to address, set X and Y
|
||||
LDA (OSCTRL),Y ; Get byte
|
||||
; needs to switch to main memory
|
||||
STA (OSINTWS) ; Store it
|
||||
; needs to switch back
|
||||
RTS
|
||||
GETADDR STA OSINTWS+0 ; (OSINTWS)=>byte to read/write
|
||||
INY
|
||||
LDA (OSCTRL),Y
|
||||
STA OSINTWS+1
|
||||
LDY #$04 ; Point Y to data byte
|
||||
RTS
|
||||
|
||||
* KERNEL/BWMISC.S
|
||||
*****************
|
||||
* Here until tidied
|
||||
|
||||
|
||||
BYTE00 LDX #$0A ; $00 = identify Host
|
||||
RTS
|
||||
|
||||
BYTE7C LDA ESCFLAG ; $7C = clear escape condition
|
||||
AND #$7F ; Clear MSbit
|
||||
STA ESCFLAG
|
||||
RTS
|
||||
|
||||
BYTE7D ROR ESCFLAG ; $7D = set escape condition
|
||||
RTS
|
||||
|
||||
BYTE7E LDA ESCFLAG ; $7E = ack detection of ESC
|
||||
AND #$7F ; Clear MSB
|
||||
STA ESCFLAG
|
||||
LDX #$FF ; Means ESC condition cleared
|
||||
RTS
|
||||
|
||||
BYTE7F PHY ; $7F = check for EOF
|
||||
JSR CHKEOF
|
||||
PLY
|
||||
RTS
|
||||
|
||||
; $80 = read ADC or get buf stat
|
||||
BYTE80 CPX #$00 ; X<0 => info about buffers
|
||||
BMI :S80BUF ; X>=0 read ADC info
|
||||
LDX #$00 ; ADC - just return 0
|
||||
LDY #$00 ; ADC - just return 0
|
||||
RTS
|
||||
:S80BUF CPX #$FF ; Kbd buf
|
||||
BEQ :S80KEY
|
||||
CPX #$FE ; RS423
|
||||
BEQ :NONE
|
||||
:ONE LDX #$01 ; For outputs, 1 char free
|
||||
RTS
|
||||
:S80KEY LDX $C000 ; Keyboard data/strobe
|
||||
AND #$80
|
||||
BEQ :NONE
|
||||
BRA :ONE
|
||||
:NONE LDX #$00 ; No chars in buf
|
||||
RTS
|
||||
|
||||
BYTE81 JSR GETKEY ; $81 = Read key with time lim
|
||||
RTS
|
||||
|
||||
BYTE82 LDY #$00 ; $82 = read high order address
|
||||
LDX #$00 ; $0000 for language processor
|
||||
RTS
|
||||
|
||||
BYTE83 LDY #$0E ; $83 = read bottom of user mem
|
||||
LDX #$00 ; $0E00
|
||||
RTS
|
||||
|
||||
BYTE84 LDY #$80 ; $84 = read top of user mem
|
||||
LDX #$00
|
||||
RTS
|
||||
|
||||
BYTE85 LDY #$80 ; $85 = top user mem for mode
|
||||
LDX #$00
|
||||
RTS
|
||||
|
||||
BYTE86 LDY ROW ; $86 = read cursor pos
|
||||
LDX COL
|
||||
RTS
|
||||
|
||||
BYTE8B LDA #$00 ; $8B = *OPT
|
||||
JMP (FSCV) ; Hand over to filing system
|
||||
|
||||
BYTEDA RTS ; $DA = clear VDU queue
|
||||
|
||||
BYTEEA LDX #$00 ; No tube
|
||||
RTS ; $EA = Tube presence
|
||||
|
||||
UNSUPPBW
|
||||
LDA #<OSBYTEM
|
||||
LDY #>OSBYTEM
|
||||
CPX #7
|
||||
BEQ UNSUPGO
|
||||
LDA #<OSWORDM
|
||||
LDY #>OSWORDM
|
||||
UNSUPGO JSR PRSTR
|
||||
LDA OSAREG
|
||||
JSR OUTHEX
|
||||
LDA #<OSBM2
|
||||
LDY #>OSBM2
|
||||
JMP PRSTR
|
||||
|
||||
OSBYTEM ASC 'OSBYTE($'
|
||||
DB $00
|
||||
OSWORDM ASC 'OSWORD($'
|
||||
DB $00
|
||||
OSBM2 ASC ').'
|
||||
DB $00
|
||||
|
||||
BYTEVAR LDX #$00
|
||||
LDY #$00
|
||||
BYTE87
|
||||
WORDE0 RTS
|
||||
|
||||
|
|
@ -0,0 +1,305 @@
|
|||
|
||||
* OSWORD HANDLER
|
||||
* On entry, A=action
|
||||
* XY=>control block
|
||||
* On exit, All preserved (except OSWORD 0)
|
||||
* control block updated
|
||||
WORDHND STX OSCTRL+0 ; Point to control block
|
||||
STY OSCTRL+1
|
||||
CMP #$00 ; OSWORD 0 read a line
|
||||
BNE :S01
|
||||
JMP OSWORD0
|
||||
:S01 CMP #$01 ; OSWORD 1 read system clock
|
||||
BNE :S02
|
||||
JMP OSWORD1
|
||||
:S02 CMP #$02 ; OSWORD 2 write system clock
|
||||
BNE :S05
|
||||
JMP OSWORD2
|
||||
:S05 CMP #$05 ; OSWORD 5 read I/O memory
|
||||
BNE :S06
|
||||
JMP OSWORD5
|
||||
:S06 CMP #$06 ; OSWORD 6 write I/O memory
|
||||
BNE :UNSUPP
|
||||
|
||||
:UNSUPP PHA
|
||||
LDA #<:OSWORDM ; Unimplemented, print msg
|
||||
LDY #>:OSWORDM
|
||||
JSR PRSTR
|
||||
PLA
|
||||
PHA
|
||||
JSR OUTHEX
|
||||
LDA #<:OSWRDM2
|
||||
LDY #>:OSWRDM2
|
||||
JSR PRSTR
|
||||
PLA
|
||||
RTS
|
||||
:OSWORDM ASC 'OSWORD('
|
||||
DB $00
|
||||
:OSWRDM2 ASC ')'
|
||||
DB $00
|
||||
|
||||
* OSRDLINE - Read a line of input
|
||||
* On entry, (OSCTRL)=>control block
|
||||
* On exit, Y=length of line, offset to <cr>
|
||||
* CC = Ok, CS = Escape
|
||||
*
|
||||
OSWORD0 LDY #$04
|
||||
:RDLNLP1 LDA (OSCTRL),Y ; Copy MAXLEN, MINCH, MAXCH to workspace
|
||||
STA :MAXLEN-2,Y
|
||||
DEY
|
||||
CPY #$02
|
||||
BCS :RDLNLP1
|
||||
:RDLNLP2 LDA (OSCTRL),Y ; (ZP2)=>line buffer
|
||||
STA ZP2,Y
|
||||
DEY
|
||||
BPL :RDLNLP2
|
||||
INY
|
||||
BRA :L1
|
||||
|
||||
:BELL LDA #$07 ; BELL
|
||||
:R1 DEY
|
||||
:R2 INY ; Step to next character
|
||||
:R3 JSR OSWRCH ; Output character
|
||||
|
||||
:L1 JSR OSRDCH
|
||||
BCS :EXIT
|
||||
CMP #$08 ; Backspace
|
||||
BEQ :RDDEL
|
||||
CMP #$7F ; Delete
|
||||
BEQ :RDDEL
|
||||
CMP #$15 ; Ctrl-U
|
||||
BNE :S2
|
||||
INY ; Balance first DEY
|
||||
:RDCTRLU DEY ; Back up one character
|
||||
BEQ :L1 ; Beginning of line
|
||||
LDA #$7F ; Delete
|
||||
JSR OSWRCH
|
||||
JMP :RDCTRLU
|
||||
:RDDEL TYA
|
||||
BEQ :L1 ; Beginning of line
|
||||
DEY ; Back up one character
|
||||
LDA #$7F ; Delete
|
||||
BNE :R3 ; Jump back to delete
|
||||
|
||||
:S2 STA (ZP2),Y
|
||||
CMP #$0D ; CR
|
||||
BEQ :S3
|
||||
CPY :MAXLEN
|
||||
BCS :BELL ; Too long, beep
|
||||
CMP :MINCH
|
||||
BCC :R1 ; <MINCHAR, don't step to next
|
||||
CMP :MAXCH
|
||||
BEQ :R2 ; =MAXCHAR, step to next
|
||||
BCC :R2 ; <MAXCHAR, step to next
|
||||
BCS :R1 ; >MAXCHAR, don't step to next
|
||||
|
||||
:S3 JSR OSNEWL
|
||||
:EXIT LDA ESCFLAG
|
||||
ROL
|
||||
RTS
|
||||
:MAXLEN DB $00
|
||||
:MINCH DB $00
|
||||
:MAXCH DB $00
|
||||
|
||||
* OSWORD1 - Read system clock
|
||||
OSWORD1 LDA #$00
|
||||
LDY #$00
|
||||
:L1 STA (OSCTRL),Y
|
||||
INY
|
||||
CPY #$05
|
||||
BNE :L1
|
||||
RTS
|
||||
|
||||
* OSWORD2 - Write system clock
|
||||
OSWORD2 RTS ; Nothing to do
|
||||
|
||||
* OSWORD5 - Read I/O Processor memory
|
||||
OSWORD5 LDA (OSCTRL) ; Fetch pointer into ZP2
|
||||
STA ZP2
|
||||
LDY #$01
|
||||
LDA (OSCTRL),Y
|
||||
STA ZP2+1
|
||||
LDA (ZP2) ; Now read byte
|
||||
LDY #$04 ; Save byte to XY+4
|
||||
STA (OSCTRL),Y
|
||||
RTS
|
||||
|
||||
* OSWORD6 - Write I/O Processor memory
|
||||
OSWORD6 LDA (OSCTRL) ; Fetch pointer into ZP2
|
||||
STA ZP2
|
||||
LDY #$01
|
||||
LDA (OSCTRL),Y
|
||||
STA ZP2+1
|
||||
LDY #$04 ; Byte to be written XY+4
|
||||
LDA (OSCTRL),Y
|
||||
STA (ZP2)
|
||||
RTS
|
||||
|
||||
* OSBYTE HANDLER
|
||||
* On entry, A=action
|
||||
* X=first parameter
|
||||
* Y=second parameter if A>$7F
|
||||
* On exit, A=preserved
|
||||
* X=first returned result
|
||||
* Y=second returned result if A>$7F
|
||||
* Cy=any returned status if A>$7F
|
||||
BYTEHND PHA
|
||||
JSR BYTECALLER
|
||||
PLA
|
||||
RTS
|
||||
BYTECALLER
|
||||
CMP #$00 ; $00 = identify MOS version
|
||||
BNE :S02
|
||||
LDX #$0A
|
||||
RTS
|
||||
|
||||
:S02 CMP #$02 ; $02 = select input stream
|
||||
BNE :S03
|
||||
RTS ; Nothing to do
|
||||
|
||||
:S03 CMP #$03 ; $03 = select output stream
|
||||
BNE :S0B
|
||||
RTS ; Nothing to do
|
||||
|
||||
:S0B CMP #$0B ; $0B = set keyboard delay
|
||||
BNE :S0C
|
||||
RTS ; Nothing to do
|
||||
|
||||
:S0C CMP #$0C ; $0C = set keyboard rate
|
||||
BNE :S0F
|
||||
RTS ; Nothing to do
|
||||
|
||||
:S0F CMP #$0F ; $0F = flush buffers
|
||||
BNE :S7C
|
||||
RTS ; Nothing to do
|
||||
|
||||
:S7C CMP #$7C ; $7C = clear escape condition
|
||||
BNE :S7D
|
||||
LDA ESCFLAG
|
||||
AND #$7F ; Clear MSbit
|
||||
STA ESCFLAG
|
||||
RTS
|
||||
|
||||
:S7D CMP #$7D ; $7D = set escape condition
|
||||
BNE :S7E
|
||||
ROR ESCFLAG
|
||||
RTS
|
||||
|
||||
:S7E CMP #$7E ; $7E = ack detection of ESC
|
||||
BNE :S7F
|
||||
LDA ESCFLAG
|
||||
AND #$7F ; Clear MSB
|
||||
STA ESCFLAG
|
||||
LDX #$FF ; Means ESC condition cleared
|
||||
RTS
|
||||
|
||||
:S7F CMP #$7F ; $7F = check for EOF
|
||||
BNE :S80
|
||||
PHY
|
||||
JSR CHKEOF
|
||||
PLY
|
||||
RTS
|
||||
|
||||
:S80 CMP #$80 ; $80 = read ADC or get buf stat
|
||||
BNE :S81
|
||||
CPX #$00 ; X<0 => info about buffers
|
||||
BMI :S80BUF ; X>=0 read ADC info
|
||||
LDX #$00 ; ADC - just return 0
|
||||
LDY #$00 ; ADC - just return 0
|
||||
RTS
|
||||
:S80BUF CPX #$FF ; Kbd buf
|
||||
BEQ :S80KEY
|
||||
CPX #$FE ; RS423
|
||||
BEQ :NONE
|
||||
:ONE LDX #$01 ; For outputs, 1 char free
|
||||
RTS
|
||||
:S80KEY LDX $C000 ; Keyboard data/strobe
|
||||
AND #$80
|
||||
BEQ :NONE
|
||||
BRA :ONE
|
||||
:NONE LDX #$00 ; No chars in buf
|
||||
RTS
|
||||
|
||||
:S81 CMP #$81 ; $81 = Read key with time lim
|
||||
BNE :S82
|
||||
JSR GETKEY
|
||||
RTS
|
||||
|
||||
:S82 CMP #$82 ; $82 = read high order address
|
||||
BNE :S83
|
||||
LDY #$FF ; $FFFF for I/O processor
|
||||
LDX #$FF
|
||||
RTS
|
||||
|
||||
:S83 CMP #$83 ; $83 = read bottom of user mem
|
||||
BNE :S84
|
||||
LDY #$0E ; $0E00
|
||||
LDX #$00
|
||||
RTS
|
||||
|
||||
:S84 CMP #$84 ; $84 = read top of user mem
|
||||
BNE :S85
|
||||
LDY #$80
|
||||
LDX #$00
|
||||
RTS
|
||||
|
||||
:S85 CMP #$85 ; $85 = top user mem for mode
|
||||
BNE :S86
|
||||
LDY #$80
|
||||
LDX #$00
|
||||
RTS
|
||||
|
||||
:S86 CMP #$86 ; $86 = read cursor pos
|
||||
BNE :S8B
|
||||
LDY ROW
|
||||
LDX COL
|
||||
RTS
|
||||
|
||||
:S8B CMP #$8B ; $8B = *OPT
|
||||
BNE :S8E
|
||||
* TODO: Could implement some FS options here
|
||||
* messages on/off, error behaviour
|
||||
RTS ; Nothing to do (yet)
|
||||
|
||||
:S8E CMP #$8E ; $8E = Enter language ROM
|
||||
BNE :SDA
|
||||
|
||||
LDA #$09 ; Print language name at $8009
|
||||
LDY #$80
|
||||
JSR PRSTR
|
||||
JSR OSNEWL
|
||||
JSR OSNEWL
|
||||
|
||||
CLC ; TODO: CLC or SEC?
|
||||
LDA #$01
|
||||
JMP AUXADDR
|
||||
|
||||
:SDA CMP #$DA ; $DA = clear VDU queue
|
||||
BNE :SEA
|
||||
RTS
|
||||
|
||||
:SEA CMP #$EA ; $EA = Tube presence
|
||||
BNE :UNSUPP
|
||||
LDX #$00 ; No tube
|
||||
RTS
|
||||
|
||||
:UNSUPP PHX
|
||||
PHY
|
||||
PHA
|
||||
LDA #<OSBYTEM
|
||||
LDY #>OSBYTEM
|
||||
JSR PRSTR
|
||||
PLA
|
||||
JSR OUTHEX
|
||||
LDA #<OSBM2
|
||||
LDY #>OSBM2
|
||||
JSR PRSTR
|
||||
PLY
|
||||
PLX
|
||||
RTS
|
||||
|
||||
OSBYTEM ASC 'OSBYTE($'
|
||||
DB $00
|
||||
OSBM2 ASC ').'
|
||||
DB $00
|
||||
|
||||
|
|
@ -0,0 +1,245 @@
|
|||
***********************************************************
|
||||
* Apple //e VDU Driver for 80 column mode (PAGE2)
|
||||
***********************************************************
|
||||
|
||||
* Clear to EOL
|
||||
CLREOL LDA ROW
|
||||
ASL
|
||||
TAX
|
||||
LDA SCNTAB,X ; LSB of row
|
||||
STA ZP1
|
||||
LDA SCNTAB+1,X ; MSB of row
|
||||
STA ZP1+1
|
||||
LDA COL
|
||||
PHA
|
||||
:L1 LDA COL
|
||||
LSR
|
||||
TAY
|
||||
BCC :S1
|
||||
>>> WRTMAIN
|
||||
:S1 LDA #" "
|
||||
STA (ZP1),Y
|
||||
>>> WRTAUX
|
||||
LDA COL
|
||||
CMP #79
|
||||
BEQ :S2
|
||||
INC COL
|
||||
BRA :L1
|
||||
:S2 PLA
|
||||
STA COL
|
||||
RTS
|
||||
|
||||
* Clear the screen
|
||||
CLEAR STZ ROW
|
||||
STZ COL
|
||||
:L1 JSR CLREOL
|
||||
:S2 LDA ROW
|
||||
CMP #23
|
||||
BEQ :S3
|
||||
INC ROW
|
||||
BRA :L1
|
||||
:S3 STZ ROW
|
||||
STZ COL
|
||||
RTS
|
||||
|
||||
* Print char in A at ROW,COL
|
||||
PRCHRC PHA
|
||||
LDA $C000 ; Kbd data/strobe
|
||||
BMI :KEYHIT
|
||||
:RESUME LDA ROW
|
||||
ASL
|
||||
TAX
|
||||
LDA SCNTAB,X ; LSB of row address
|
||||
STA ZP1
|
||||
LDA SCNTAB+1,X ; MSB of row address
|
||||
STA ZP1+1
|
||||
LDA COL
|
||||
LSR
|
||||
TAY
|
||||
BCC :S1
|
||||
>>> WRTMAIN
|
||||
:S1 PLA
|
||||
ORA #$80
|
||||
STA (ZP1),Y ; Screen address
|
||||
>>> WRTAUX
|
||||
RTS
|
||||
:KEYHIT STA $C010 ; Clear strobe
|
||||
AND #$7F
|
||||
CMP #$13 ; Ctrl-S
|
||||
BEQ :PAUSE
|
||||
CMP #$1B ; Esc
|
||||
BNE :RESUME
|
||||
:ESC SEC
|
||||
ROR ESCFLAG ; Set ESCFLAG
|
||||
BRA :RESUME
|
||||
:PAUSE STA $C010 ; Clear strobe
|
||||
:L1 LDA $C000 ; Kbd data/strobe
|
||||
BPL :L1
|
||||
AND #$7F
|
||||
CMP #$11 ; Ctrl-Q
|
||||
BEQ :RESUME
|
||||
CMP #$1B ; Esc
|
||||
BEQ :ESC
|
||||
BRA :PAUSE
|
||||
|
||||
* Return char at ROW,COL in A
|
||||
GETCHRC LDA ROW
|
||||
ASL
|
||||
TAX
|
||||
LDA SCNTAB,X
|
||||
STA ZP1
|
||||
LDA SCNTAB+1,X
|
||||
STA ZP1+1
|
||||
LDA COL
|
||||
LSR
|
||||
TAY
|
||||
BCC :S1
|
||||
STA $C002 ; Read main memory
|
||||
:S1 LDA (ZP1),Y
|
||||
STX $C003 ; Read aux mem again
|
||||
RTS
|
||||
|
||||
* Perform backspace & delete operation
|
||||
BACKSPC LDA COL
|
||||
BEQ :S1
|
||||
DEC COL
|
||||
BRA :S2
|
||||
:S1 LDA ROW
|
||||
BEQ :S3
|
||||
DEC ROW
|
||||
STZ COL
|
||||
:S2 LDA #' '
|
||||
JSR PRCHRC
|
||||
:S3 RTS
|
||||
|
||||
* Perform backspace/cursor left operation
|
||||
NDBSPC LDA COL
|
||||
BEQ :S1
|
||||
DEC COL
|
||||
BRA :S3
|
||||
:S1 LDA ROW
|
||||
BEQ :S3
|
||||
DEC ROW
|
||||
STZ COL
|
||||
:S3 RTS
|
||||
|
||||
* Perform cursor right operation
|
||||
CURSRT LDA COL
|
||||
CMP #78
|
||||
BCS :S1
|
||||
INC COL
|
||||
RTS
|
||||
:S1 LDA ROW
|
||||
CMP #22
|
||||
BCS :S2
|
||||
INC ROW
|
||||
STZ COL
|
||||
:S2 RTS
|
||||
|
||||
* Output character to VDU driver
|
||||
* All registers trashable
|
||||
OUTCHAR CMP #$00 ; NULL
|
||||
BNE :T1
|
||||
BRA :IDONE
|
||||
:T1 CMP #$07 ; BELL
|
||||
BNE :T2
|
||||
JSR BEEP
|
||||
BRA :IDONE
|
||||
:T2 CMP #$08 ; Backspace
|
||||
BNE :T3
|
||||
JSR NDBSPC
|
||||
BRA :DONE
|
||||
:T3 CMP #$09 ; Cursor right
|
||||
BNE :T4
|
||||
JSR CURSRT
|
||||
BRA :DONE
|
||||
:T4 CMP #$0A ; Linefeed
|
||||
BNE :T5
|
||||
LDA ROW
|
||||
CMP #23
|
||||
BEQ :SCROLL
|
||||
INC ROW
|
||||
:IDONE BRA :DONE
|
||||
:T5 CMP #$0B ; Cursor up
|
||||
BNE :T6
|
||||
LDA ROW
|
||||
BEQ :DONE
|
||||
DEC ROW
|
||||
BRA :DONE
|
||||
:T6 CMP #$0D ; Carriage return
|
||||
BNE :T7
|
||||
JSR CLREOL
|
||||
STZ COL
|
||||
BRA :DONE
|
||||
:T7 CMP #$0C ; Ctrl-L
|
||||
BNE :T8
|
||||
JSR CLEAR
|
||||
BRA :DONE
|
||||
:T8 CMP #$1E ; Home
|
||||
BNE :T9
|
||||
STZ ROW
|
||||
STZ COL
|
||||
BRA :DONE
|
||||
:T9 CMP #$7F ; Delete
|
||||
BNE :T10
|
||||
JSR BACKSPC
|
||||
BRA :DONE
|
||||
:T10 JSR PRCHRC
|
||||
LDA COL
|
||||
CMP #79
|
||||
BNE :S2
|
||||
STZ COL
|
||||
LDA ROW
|
||||
CMP #23
|
||||
BEQ :SCROLL
|
||||
INC ROW
|
||||
BRA :DONE
|
||||
:S2 INC COL
|
||||
BRA :DONE
|
||||
:SCROLL JSR SCROLL
|
||||
STZ COL
|
||||
JSR CLREOL
|
||||
:DONE RTS
|
||||
|
||||
* Scroll whole screen one line
|
||||
SCROLL LDA #$00
|
||||
:L1 PHA
|
||||
JSR SCR1LINE
|
||||
PLA
|
||||
INC
|
||||
CMP #23
|
||||
BNE :L1
|
||||
RTS
|
||||
|
||||
* Copy line A+1 to line A
|
||||
SCR1LINE ASL ; Dest addr->ZP1
|
||||
TAX
|
||||
LDA SCNTAB,X
|
||||
STA ZP1
|
||||
LDA SCNTAB+1,X
|
||||
STA ZP1+1
|
||||
INX ; Source addr->ZP2
|
||||
INX
|
||||
LDA SCNTAB,X
|
||||
STA ZP2
|
||||
LDA SCNTAB+1,X
|
||||
STA ZP2+1
|
||||
LDY #$00
|
||||
:L1 LDA (ZP2),Y
|
||||
STA (ZP1),Y
|
||||
STA $C002 ; Read main mem
|
||||
>>> WRTMAIN
|
||||
LDA (ZP2),Y
|
||||
STA (ZP1),Y
|
||||
STA $C003 ; Read aux mem
|
||||
>>> WRTAUX
|
||||
INY
|
||||
CPY #40
|
||||
BNE :L1
|
||||
RTS
|
||||
|
||||
* Addresses of screen rows in PAGE2
|
||||
SCNTAB DW $800,$880,$900,$980,$A00,$A80,$B00,$B80
|
||||
DW $828,$8A8,$928,$9A8,$A28,$AA8,$B28,$BA8
|
||||
DW $850,$8D0,$950,$9D0,$A50,$AD0,$B50,$BD0
|
||||
|
||||
2
extract
2
extract
|
|
@ -1,5 +1,5 @@
|
|||
#!/bin/sh
|
||||
for file in APPLECORN LOADER MAINMEM AUXMEM; do
|
||||
for file in APPLECORN LOADER MAINMEM AUX.AMOS.INIT AUX.AMOS.KRNL AUX.HOSTFS AUX.IRQ.VECS AUX.MISC AUX.MOS.WS AUX.OSBW.JGH AUX.OSBW.ORIG AUX.VDU; do
|
||||
cadius extractfile applecorn.po /APPLECORN/${file}.S .
|
||||
rm _FileInformation.txt
|
||||
cadius clearhighbit ${file}.S\#040000
|
||||
|
|
|
|||
Loading…
Reference in New Issue