mirror of
https://github.com/bobbimanners/Applecorn.git
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Merge branch 'bobbimanners:main' into main
This commit is contained in:
jgharston
GitHub
commit
5fcc8dae06
BIN
applecorn.po
BIN
applecorn.po
Binary file not shown.
@ -94,7 +94,6 @@ RDVBL EQU $C019
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RD80VID EQU $C01F
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TBCOLOR EQU $C022 ; GS-specific, used but commented out
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KEYMOD EQU $C025 ; GS-specific
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NEWVIDEO EQU $C029 ; GS-specific, new video register
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SPKR EQU $C030
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@ -218,6 +218,6 @@ BYTE00 BEQ BYTE00A ; OSBYTE 0,0 - generate error
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RTS ; %000x1xxx host type, 'A'pple
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BYTE00A BRK
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DB $F7
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HELLO ASC 'Applecorn MOS 2022-12-26-HOHOHO'
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HELLO ASC 'Applecorn MOS 2022-12-26'
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DB $00 ; Unify MOS messages
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146
auxmem.shr.s
146
auxmem.shr.s
@ -265,25 +265,34 @@ SHRPRCHAR SEC
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LDA #$E1
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STA VDUBANK2
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JSR SHRCHARADDR ; Screen addr in VDUADDR
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LDX #$00 ; First row of char
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:L1 LDY #$00
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LDA [VDUADDR2] ; Load exploded font data 1st byte
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JSR SHRCOLBYTE
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STA [VDUADDR] ; Store on screen
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INY
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INC VDUADDR2+0 ; Increment exploded font ptr
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BNE :S1
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INC VDUADDR2+1
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:S1 LDA [VDUADDR2] ; Load exploded font data 2nd byte
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JSR SHRCOLBYTE
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STA [VDUADDR],Y ; Store on screen
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INC VDUADDR2+0 ; Increment exploded font ptr
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BNE :S2
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INC VDUADDR2+1
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:S2 JSR SHRNEXTROW ; Add 160 to VDUADDR
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INX ; Next row of font
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CPX #$08 ; Last row?
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BNE :L1
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* 65816 code contributed by John Brooks follows ...
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PHP ; Disauble interrupts
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SEI
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PHB ; Save data bank
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LDA VDUADDR2+2 ; Push font Bank onto stack
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PHA
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PLB ; Set data bank to font bank
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CLC ; 65816 native mode
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XCE
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REP #$30 ; 16 bit M & X
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MX %00 ; Tell Merlin
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LDY VDUADDR2 ; Font src ptr
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LDX VDUADDR ; SHR dst ptr
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SrcFont = $000000
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DstShr = $E10000
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LUP 8 ; Unroll x 8
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LDA !SrcFont,Y ; Read 2 bytes of exploded font
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STAL DstShr,X ; Write 2 bytes to screen
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SrcFont = SrcFont+2
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DstShr = DstShr+160
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--^
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PLB ; Recover data bank
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SEC ; Back to emulation mode
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XCE
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MX %11 ; Tell Merlin
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PLP ; Normal service resumed
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RTS
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@ -330,46 +339,69 @@ SHRNEXTROW LDA VDUADDR+0 ; Add 160 to VDUADDR
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* Forwards scroll one line
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* Copy text line A+1 to line A
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* Note: Code for this courtesy Kent Dickey
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* TODO: This is only for 640 mode at present
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SHRSCR1LINE TAY
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LDA SHRTAB,Y ; MSB of address of line A
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STA VDUADDR+1
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STZ VDUADDR+0 ; Addr of start of line
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INY
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LDA SHRTAB,Y ; MSB of address of line A+1
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STA VDUADDR2+1
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STZ VDUADDR2+0 ; Addr of start of line
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LDA #$E1 ; Bank $E1
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STA VDUBANK
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STA VDUBANK2
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LDA #$08 ; Eight rows of pixels
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STA :CTR
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INC TXTWINRGT
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:L0 LDA TXTWINLFT
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TAX
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SHRSCR1LINE PHY
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PHX
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STA VDUADDR+1 ; Screen line -> MSB
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STZ VDUADDR+0 ; Zero LSB
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PHP ; Disable interrupts
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SEI
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CLC ; Enter native mode
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XCE
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PHB ; Preserve data bank
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REP #$31 ; M,X 16 bit, carry clear
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MX %00 ; Tell Merlin
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LDA VDUADDR ; Screen line to scroll
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ASL ; Mult 4
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ASL
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ADC VDUADDR ; Mult 5
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STA VDUADDR ; VDUADDR = line * $500
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LDA TXTWINLFT ; Left margin
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ASL ; 2 bytes / char
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TAY
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:L1 CPX TXTWINRGT
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BCS :S1
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LDA [VDUADDR2],Y
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STA [VDUADDR],Y
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INY
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LDA [VDUADDR2],Y
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STA [VDUADDR],Y
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INY
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INX
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BRA :L1
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:S1 JSR SHRNEXTROW ; Add 160 to VDUADDR
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LDA VDUADDR2+0 ; Add 160 to VDUADDR2
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CLC
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ADC #160
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STA VDUADDR2+0
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LDA VDUADDR2+1
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ADC #$00
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STA VDUADDR2+1
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DEC :CTR
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BNE :L0
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DEC TXTWINRGT
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AND #$00ff ; Mask to get 8 bit result
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ADC VDUADDR ; Add to beginning of line addr
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STA VDUADDR ; VDUADDR = start position
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SEP #$21 ; M 8 bit, X 16 bit, carry set
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MX %10 ; Tell Merlin
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LDA TXTWINRGT ; Compute width ..
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SBC TXTWINLFT ; .. right minus left
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REP #$31 ; M,X 16 bit, carry clear
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MX %00 ; Tell Merlin
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ASL ; 2 bytes / char
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AND #$00ff ; Mask to get 8 bit result
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ADC VDUADDR ; Add to start position
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TAX ; Will use as index
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PEA #$e1e1 ; Set databank to $E1
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PLB
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PLB
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:LOOP1 LDA $2500,x ; 2 bytes, row 0
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STA $2000,x
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LDA $25a0,x ; row 1
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STA $20a0,x
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LDA $2640,x ; row 2
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STA $2140,x
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LDA $26e0,x ; row 3
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STA $21e0,x
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LDA $2780,x ; row 4
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STA $2280,x
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LDA $2820,x ; row 5
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STA $2320,x
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LDA $28c0,x ; row 6
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STA $23c0,x
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LDA $2960,x ; row 7
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STa $2460,x
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DEX ; Update index
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DEX
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BMI :DONE ; Jump out if odd->-ve
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CPX VDUADDR ; Compare with start addr
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BCS :LOOP1 ; Bytes left? Go again
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:DONE PLB ; Recover data bank
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SEC ; Back to emulation mode
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XCE
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PLP ; Recover flags + regs
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PLX
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PLY
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RTS
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