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NES complete now (tested and conio test updated), replaces what is in #532

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This commit is contained in:
mrdudz
2025-05-24 19:19:49 +02:00
parent 6628c4ff43
commit 228316ff58
6 changed files with 85 additions and 36 deletions
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4
libsrc/nes/color.s
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@@ -9,11 +9,11 @@
.export _textcolor, _bgcolor, _bordercolor
.import return0, ppubuf_put
.import return0, return1, ppubuf_put
.include "nes.inc"
_textcolor = return0
_textcolor = return1
_bordercolor = return0
.proc _bgcolor

37
libsrc/nes/cpeekc.s Normal file
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@@ -0,0 +1,37 @@
;
; 2016-02-28, Groepaz
; 2017-08-17, Greg King
;
; char cpeekc (void);
;
.export _cpeekc
.import ppubuf_waitempty
.forceimport initconio
.include "nes.inc"
_cpeekc:
; wait until all console data has been written
jsr ppubuf_waitempty
ldy SCREEN_PTR+1
lda SCREEN_PTR
; waiting for vblank is incredibly slow ://
vwait:
; ldx PPU_STATUS
; bpl vwait
ldx #>$0000
sty PPU_VRAM_ADDR2
sta PPU_VRAM_ADDR2
lda PPU_VRAM_IO ; first read is invalid
lda PPU_VRAM_IO ; get data
stx PPU_VRAM_ADDR2
stx PPU_VRAM_ADDR2
and #<~$80 ; remove reverse bit
rts

34
libsrc/nes/cpeekchar.s
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@@ -1,34 +0,0 @@
.export _cpeekc
.import ppubuf_waitempty
.include "nes.inc"
.segment "CODE"
_cpeekc:
; wait until all console data has been written
jsr ppubuf_waitempty
ldy SCREEN_PTR+1
ldx SCREEN_PTR
; waiting for vblank is incredibly slow ://
vwait:
; lda $2002 ;wait
; bpl vwait
lda #0
sty $2006
stx $2006
ldy $2007 ; first read is invalid
ldy $2007 ; get data
sta $2006
sta $2006
tya
and #$7f ; ?!?!
rts

8
libsrc/nes/cpeekcolor.s Normal file
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@@ -0,0 +1,8 @@
;
; 2017-06-03, Greg King
;
; unsigned char cpeekcolor (void);
;
.import return1
.export _cpeekcolor := return1 ; always COLOR_WHITE

37
libsrc/nes/cpeekrevers.s Normal file
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@@ -0,0 +1,37 @@
;
; 2016-02-28, Groepaz
; 2017-08-17, Greg King
;
; char cpeekrevers (void);
;
.export _cpeekrevers
.import ppubuf_waitempty
.forceimport initconio
.include "nes.inc"
_cpeekrevers:
; wait until all console data has been written
jsr ppubuf_waitempty
ldy SCREEN_PTR+1
lda SCREEN_PTR
; waiting for vblank is incredibly slow ://
vwait:
; ldx PPU_STATUS
; bpl vwait
ldx #>$0000
sty PPU_VRAM_ADDR2
sta PPU_VRAM_ADDR2
lda PPU_VRAM_IO ; first read is invalid
lda PPU_VRAM_IO ; get data
stx PPU_VRAM_ADDR2
stx PPU_VRAM_ADDR2
and #<$80 ; get reverse bit
rts

1
targettest/conio.c
View File

@@ -59,6 +59,7 @@ void peektest(void)
(void)textcolor(j);
revers((j >> 1)&1);
cputc('a' + j);
rbuf[j] = (j >> 1)&1;
}
for (j = 0; j < NUMCOLS; ++j) {
gotoxy(j, LINE_PEEKTEST);