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HGR scrolling is working now.

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This commit is contained in:
Bobbi Webber-Manners 2021-09-23 21:49:35 -04:00
parent 6278c6d9fc
commit e30576b7ec
3 changed files with 45 additions and 8 deletions
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BIN
applecorn.po
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7
auxmem.vdu.s
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@ -632,6 +632,9 @@ SCROLLER LDA #$00
:L1 PHA
JSR SCR1LINE
PLA
PHA
JSR HSCR1LINE
PLA
INC
CMP #23
BNE :L1
@ -670,6 +673,10 @@ SCR1LINE ASL ; Dest addr->ZP1
BNE :L1
RTS
* Copy text line A+1 to line A for HGR bitmap gfx mode
HSCR1LINE >>> XF2MAIN,HGRSCR1L
HSCR1RET >>> ENTAUX
RTS
* VDU 1 - Send one character to printer
VDU01 RTS

46
mainmem.gfx.s
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@ -110,18 +110,48 @@ DRAWCHAR >>> ENTMAIN
BNE :L1
>>> XF2AUX,PUTCHRET
* Copy text line A+1 to line A
HGRSCR1L >>> ENTMAIN
ASL ; Dest addr->A4L,A4H
TAX
LDA MHGRTAB,X
STA A4L
LDA MHGRTAB+1,X
STA A4H
INX ; Source addr->A1L,A1H
INX
LDA MHGRTAB,X
STA A1L
LDA MHGRTAB+1,X
STA A1H
LDX #$00
:L1 LDY #$00
:L2 LDA (A1L),Y
STA (A4L),Y
INY
CPY #40 ; 40 chars in line
BNE :L2
INC A1H ; Advance source 1024 bytes
INC A1H
INC A1H
INC A1H
INC A4H ; Advance dest 1024 bytes
INC A4H
INC A4H
INC A4H
INX
CPX #8 ; 8 pixel rows in character
BNE :L1
>>> XF2AUX,HSCR1RET
FGCOLOR DB $00 ; Foreground colour
BGCOLOR DB $00 ; Background colour
LINETYPE DB $00 ; 0 normal, 1 XOR
PLOTMODE DB $00 ; K value for PLOT K,X,Y
HGRADDR DW $0000 ; Address 1st line of HGR char
* Addresses of start of pixel rows in PAGE1
MHGRTAB DW $2000,$2080,$2100,$2180,$2200,$2280,$2300,$2380
DW $2028,$20A8,$2128,$21A8,$2228,$22A8,$2328,$23A8
DW $2050,$20D0,$2150,$21D0,$2250,$22D0,$2350,$23D0