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Video RAM location is now defined in the linker config

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git-svn-id: svn://svn.cc65.org/cc65/trunk@924 b7a2c559-68d2-44c3-8de9-860c34a00d81
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cuz 2001-09-14 17:09:22 +00:00
parent 09305ce21c
commit f46c46abe1
3 changed files with 10 additions and 9 deletions
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9
libsrc/cbm510/crt0.s
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@ -7,7 +7,8 @@
.export _exit .export _exit
.import _clrscr, initlib, donelib .import _clrscr, initlib, donelib
.import push0, _main .import push0, _main
.import __BSS_RUN__, __BSS_SIZE__ .import __VIDRAM_START__
.import __BSS_RUN__, __BSS_SIZE__
.import irq, nmi .import irq, nmi
.import k_irq, k_nmi, k_plot, k_udtim, k_scnkey .import k_irq, k_nmi, k_plot, k_udtim, k_scnkey
@ -257,14 +258,14 @@ Z4:
ora #$20 ora #$20
sta (tpi1),y sta (tpi1),y
; Set bit 14/15 of the VIC address range to the high bits of VIDEO_RAM ; Set bit 14/15 of the VIC address range to the high bits of __VIDRAM_START__
; PC6/PC7 (VICBANKSEL 0/1) = 11 ; PC6/PC7 (VICBANKSEL 0/1) = 11
ldy #tpiPortC ldy #tpiPortC
lda (tpi2),y lda (tpi2),y
sta vidsave+1 sta vidsave+1
and #$3F and #$3F
ora #((>VIDEO_RAM) & $C0) ora #<((>__VIDRAM_START__) & $C0)
sta (tpi2),y sta (tpi2),y
; Set bits 10-13 of the VIC address range to address F800 ; Set bits 10-13 of the VIC address range to address F800
@ -273,7 +274,7 @@ Z4:
lda (vic),y lda (vic),y
sta vidsave+2 sta vidsave+2
and #$0F and #$0F
ora #(((>VIDEO_RAM) & $3F) << 2) ora #<(((>__VIDRAM_START__) & $3F) << 2)
sta (vic),y sta (vic),y
; Switch back to the execution bank ; Switch back to the execution bank

3
libsrc/cbm510/io.inc
View file

@ -153,6 +153,5 @@ VIC_BG_COLOR3 = $24
; Out video memory address ; Out video memory address
VIDEO_RAM = $F800 COLOR_RAM = $D400 ; System bank
COLOR_RAM = $D400

7
libsrc/cbm510/kplot.s
View file

@ -5,6 +5,7 @@
; ;
.export k_plot .export k_plot
.import __VIDRAM_START__
.importzp crtc .importzp crtc
.include "zeropage.inc" .include "zeropage.inc"
@ -27,7 +28,7 @@
sta CRAM_PTR sta CRAM_PTR
lda LineMSBTab,x lda LineMSBTab,x
sta SCREEN_PTR+1 sta SCREEN_PTR+1
sub #>VIDEO_RAM sub #>__VIDRAM_START__
add #>COLOR_RAM add #>COLOR_RAM
sta CRAM_PTR+1 sta CRAM_PTR+1
@ -45,7 +46,7 @@ get: ldx CURS_Y
.macro LineLoTab .macro LineLoTab
.repeat 25, I .repeat 25, I
.byte <(VIDEO_RAM + I * 40) .byte <(__VIDRAM_START__ + I * 40)
.endrep .endrep
.endmacro .endmacro
@ -56,7 +57,7 @@ LineLSBTab: LineLoTab
.macro LineHiTab .macro LineHiTab
.repeat 25, I .repeat 25, I
.byte >(VIDEO_RAM + I * 40) .byte >(__VIDRAM_START__ + I * 40)
.endrep .endrep
.endmacro .endmacro