- .include "pcengine.inc"
- .import vce_init
- .import psg_init
- .import vdc_init
+ .include "pce.inc"
- .export initconio
- .export _conio_init
+ .import vce_init
+ .import psg_init
+ .import vdc_init
- .constructor initconio, 24
+ .constructor initconio, 24
- .macpack longbranch
+ .macpack longbranch
initconio:
- ;; jsr vdc_init
- jsr vce_init
- jsr psg_init
- jsr conio_init
- jsr set_palette
-
- st0 #VDC_RCR
- st1 #<$0088
- st2 #>$0088
- rts
-
- .import colors
+;; jsr vdc_init
+ jsr vce_init
+ jsr psg_init
+ jsr conio_init
+ jsr set_palette
+
+ st0 #VDC_RCR
+ st1 #<$0088
+ st2 #>$0088
+ rts
+
+ .import colors
set_palette:
+ stz VCE_ADDR_LO
+ stz VCE_ADDR_HI
- ; Make palette (use VGA palette?)
- ; stz VCE_ADDR_LO
- ; stz VCE_ADDR_HI
- ; clx
- ; cly
- vce_loop: ;; stx VCE_DATA_LO
- ;; sty VCE_DATA_HI
- ; inx
- ; cpx #$00
- ; bne vce_loop
- ; iny
- ; cpy #$02
- ; bne vce_loop
-
-
- stz VCE_ADDR_LO
- stz VCE_ADDR_HI
-
- ldx #0
+ ldx #0
@lp:
- .repeat 16
- lda colors,x
- sta VCE_DATA_LO
- lda colors+1,x
- sta VCE_DATA_HI
- .endrepeat
-
- inx
- inx
- cpx #16*2;*5
- jne @lp
-
- stz VCE_ADDR_LO
- stz VCE_ADDR_HI
- stz VCE_DATA_LO
- stz VCE_DATA_HI
-
-; so it will get linked in
-_conio_init:
- rts
+ ldy #16
+@lp1:
+ lda colors,x
+ sta VCE_DATA_LO
+ lda colors+1,x
+ sta VCE_DATA_HI
+ dey
+ bne @lp1
+
+ inx
+ inx
+ cpx #16*2
+ jne @lp
+
+ stz VCE_ADDR_LO
+ stz VCE_ADDR_HI
+ stz VCE_DATA_LO
+ stz VCE_DATA_HI
+
+ rts
;----------------------------------------------------------------------------
;
;----------------------------------------------------------------------------
- .importzp ptr1
-
+ .importzp ptr1, tmp1
conio_init:
-
- ; Load font
- st0 #VDC_MAWR
- st1 #<$2000
- st2 #>$2000
-
- ; ptr to font data
- lda #<font
- sta ptr1
- lda #>font
- sta ptr1+1
-
- st0 #VDC_VWR ; VWR
- ldy #$80 ; 128 chars
- charloop: ldx #$08 ; 8 bytes/char
- lineloop:
- ;;lda [$00] ; read font byte
- lda (ptr1)
- staio VDC_DATA_LO ; bitplane 0
- stzio VDC_DATA_HI ; bitplane 1
-
- clc ; increment font pointer
- lda ptr1
- adc #$01
- sta ptr1
- lda ptr1+1
- adc #$00
- sta ptr1+1
- dex
- bne lineloop ; next bitplane 0 byte
- ldx #$08 ; fill bitplane 2/3 with 0
- fillloop: st1 #$00
- st2 #$00
- dex
- bne fillloop ; next byte
- dey
- bne charloop ; next character
-
- ldx #0
- stx BGCOLOR
- inx
- stx CHARCOLOR
-
-
- rts
-
- .rodata
-font: .include "vga.inc"
+ ; Load font
+ st0 #VDC_MAWR
+ st1 #<$2000
+ st2 #>$2000
+
+ ; ptr to font data
+ lda #<font
+ sta ptr1
+ lda #>font
+ sta ptr1+1
+
+ st0 #VDC_VWR ; VWR
+
+ lda #0
+ sta tmp1
+ jsr copy
+
+ lda #<font
+ sta ptr1
+ lda #>font
+ sta ptr1+1
+
+ lda #$ff
+ sta tmp1
+ jsr copy
+
+
+ ldx #0
+ stx BGCOLOR
+ inx
+ stx CHARCOLOR
+
+
+ rts
+
+copy:
+ ldy #$80 ; 128 chars
+charloop: ldx #$08 ; 8 bytes/char
+lineloop:
+ lda (ptr1)
+ eor tmp1
+ sta a:VDC_DATA_LO ; bitplane 0
+ stz a:VDC_DATA_HI ; bitplane 1
+
+ clc ; increment font pointer
+ lda ptr1
+ adc #$01
+ sta ptr1
+ lda ptr1+1
+ adc #$00
+ sta ptr1+1
+ dex
+ bne lineloop ; next bitplane 0 byte
+ ldx #$08 ; fill bitplane 2/3 with 0
+fillloop: st1 #$00
+ st2 #$00
+ dex
+ bne fillloop ; next byte
+ dey
+ bne charloop ; next character
+
+ rts
+
+ .rodata
+font:
+ .include "vga.inc"
projects / cc65 / blobdiff