mirror of https://github.com/a2stuff/chtype.git
works but needs absolute path?
This commit is contained in:
Joshua Bell
parent
26857a74d1
commit
d28b73fefb
194
chtype.s
194
chtype.s
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@ -4,18 +4,43 @@
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INBUF := $200 ;GETLN input buffer.
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;;; ============================================================
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;;; ROM routines
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WAIT := $FCA8 ;Monitor wait routine.
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BELL := $FF3A ;Monitor bell routine
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CROUT := $FD8E
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PRBYTE := $FDDA
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COUT := $FDED
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;;; ============================================================
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;;; BASIC.SYSTEM global page
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EXTRNCMD := $BE06 ;External cmd JMP vector.
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XTRNADDR := $BE50 ;Ext cmd implementation addr.
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EXTRNCMD := $BE06 ; External cmd JMP vector.
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ERROUT := $BE09 ; Error routine vector.
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ERRCODE := $BE0F ; Error code
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XTRNADDR := $BE50 ; Ext cmd implementation addr.
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XLEN := $BE52 ;Length of command string-1.
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XCNUM := $BE53 ;CI cmd no. (ext cmd = 0).
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PBITS := $BE54 ;Command parameter bits.
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VSLOT := $BE61 ;Verified slot parameter.
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PBITS := $BE54 ; Command parameter bits.
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FBITS := $BE56 ; Found parameter bits.
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VADDR := $BE58 ; Address parameter
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VSLOT := $BE61 ; Slot parameter
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VTYPE := $BE6A ; Type parameter
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VPATH1 := $BE6C ; Pathname buffer
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GOSYSTEM := $BE70 ; Use instead of MLI
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SSGINFO := $BEB4 ; Get/Set Info Parameter block (set size to set=7 or get=$A)
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FIFNAME := $BEB5 ; Should be implcitly linked already
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FIFILID := $BEB8
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FIAUXID := $BEB9
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;;; ============================================================
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;;; TODO: Relocate into ProDOS-allocated buffer
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@ -27,16 +52,25 @@ VSLOT := $BE61 ;Verified slot parameter.
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lda EXTRNCMD+2
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sta nxtcmd+1
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;;;
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lda #>beepslot ;Install the address of our
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lda #<handler ;Install the address of our
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sta EXTRNCMD+1 ; command handler in the
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lda #<beepslot ; external command JMP
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lda #>handler ; external command JMP
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sta EXTRNCMD+2 ; vector.
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RTS
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rts
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;;;
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beepslot:
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handler:
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ldx #0 ;Check for our command.
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nxtchr: lda INBUF,X ;Get first character.
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cmp cmd,X ;Does it match?
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nxtchr: lda INBUF,x ;Get first character.
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and #$7F ;Convert to ASCII
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cmp #'a' ;Convert to upper-case
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bcc :+
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cmp #'z'+1
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bcs :+
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and #$DF
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: cmp cmd,x ;Does it match?
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bne notours ;NO, SO CONTINUE WITH NEXT CMD.
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inx ;Next character
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cpx #cmdlen ;All characters yet?
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@ -44,40 +78,130 @@ nxtchr: lda INBUF,X ;Get first character.
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;;;
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lda #cmdlen-1 ;Our cmd! Put cmd length-1
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sta XLEN ; in CI global XLEN.
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lda #>execute ;Point XTRNADDR to our
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lda #<execute ;Point XTRNADDR to our
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sta XTRNADDR ; command execution
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lda #<execute ; routine
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lda #>execute ; routine
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sta XTRNADDR+1
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lda #0 ;Mark the cmd number as
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sta XCNUM ; zero (external).
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;;;
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lda #%00010000 ;Set at least one bit
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sta PBITS ; in PBITS low byte!
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;; Must set at least one bit in PBITS low byte.
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lda #%10000000 ; bit 7 = Address
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sta PBITS+1
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;;;
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lda #%00000100 ;And mark PBITS high byte
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sta PBITS+1 ; that slot & drive are legal.
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lda #%00000101 ; bit 8 = filename req'd, bit 10 = Type
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sta PBITS
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clc ;Everything is OK.
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rts ;Return to BASIC.SYSTEM
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;;;
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execute:
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lda VSLOT ;Get slot parameter.
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tax ;Transfer to index reg.
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nxtbeep:
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jsr BELL ;Else, beep once.
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lda #$80 ;Set up the delay
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jsr WAIT ; and wait.
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dex ;decrement index and
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bne nxtbeep ; repeat until x = 0.
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clc ;All done successfully.
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rts ;Back to BASIC.SYSTEM.
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;;;
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;;; IT'S NOT OUR COMMAND SO MAKE SURE YOU LET BASIC
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;;; CHECK WHETER OR NOT IT'S THE NEXT COMMAND.
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;;;
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notours: sec ;SET CARRY AND LET
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;;; ============================================================
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notours:
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sec ;SET CARRY AND LET
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jmp (nxtcmd) ; NEXT EXT CMD GO FOR IT.
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;;;
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cmd: .byte "BEEPSLOT" ;Our command
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;;; ============================================================
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execute:
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;; Filename?
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lda FBITS
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and #%00000001 ; Filename?
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bne :+
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lda #$10 ; SYNTAX ERROR
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sec
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rts
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:
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;; Type?
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lda FBITS
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and #%00000100 ; Type?
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bne :+
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lda #$B ; INVALID PARAMETER
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sec
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rts
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:
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;; Show Filename
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lda #'P'|$80
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jsr COUT
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lda #'='|$80
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jsr COUT
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ptr := $06
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lda VPATH1
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sta ptr
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lda VPATH1+1
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sta ptr+1
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ldy #0
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lda (ptr),y
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tax
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iny
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: lda (ptr),y
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ora #$80
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jsr COUT
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iny
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dex
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bne :-
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jsr CROUT
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;; Show Type
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lda #'T'|$80
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jsr COUT
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lda #'='|$80
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jsr COUT
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lda #'$'|$80
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jsr COUT
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lda VTYPE
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jsr PRBYTE
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jsr CROUT
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;; Addr?
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lda FBITS+1
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and #%10000000 ; Addr?
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beq :+
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lda #'A'|$80
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jsr COUT
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lda #'='|$80
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jsr COUT
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lda #'$'|$80
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jsr COUT
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lda VADDR+1 ; hi
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jsr PRBYTE
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lda VADDR ; lo
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jsr PRBYTE
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jsr CROUT
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:
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;; Get/Set File Info
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;; GET_FILE_INFO
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lda #$A
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sta SSGINFO
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lda #$C4 ; GET_FILE_INFO
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jsr GOSYSTEM
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bcs rts1
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;; SET_FILE_INFO
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lda #$7
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sta SSGINFO
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lda VTYPE
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sta FIFILID
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;; TODO: optional Aux Type
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lda #$C3 ; SET_FILE_INFO
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jsr GOSYSTEM
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bcs rts1
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clc ;All done successfully.
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rts1: rts ;Back to BASIC.SYSTEM.
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;;; ============================================================
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;;; Data
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cmd: .byte "CHTYPE" ;Our command
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cmdlen = *-cmd ;Our command length
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nxtcmd: .word 0 ; STORE THE NEXT COMMAND'S
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; ADDRESS HERE.
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