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nes: added road, tint demo; extra tools; embed.html fetch remote url

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This commit is contained in:
Steven Hugg
2019-04-26 15:38:34 -04:00
parent 0e47e7d035
commit fe1e0fc9aa
28 changed files with 407 additions and 113 deletions
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presets/nes/ex0.asm
+2 -2
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@@ -26,10 +26,10 @@ Start:
lda #$1c ; $1C = light blue color
sta PPU_DATA ; $1C -> PPU data
; activate PPU graphics
lda #CTRL_NMI
sta PPU_CTRL ; enable NMI
lda #MASK_COLOR
sta PPU_MASK ; enable rendering
lda #CTRL_NMI
sta PPU_CTRL ; enable NMI
.endless
jmp .endless ; endless loop
presets/nes/ex1.asm
+2 -2
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@@ -28,10 +28,10 @@ Start:
sta PPU_SCROLL
sta PPU_SCROLL ; PPU scroll = $0000
; activate PPU graphics
lda #CTRL_NMI
sta PPU_CTRL ; enable NMI
lda #MASK_BG
sta PPU_MASK ; enable rendering
lda #CTRL_NMI
sta PPU_CTRL ; enable NMI
.endless
jmp .endless ; endless loop
presets/nes/ex2.asm
+2 -2
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@@ -30,10 +30,10 @@ Start:
sta PPU_SCROLL
sta PPU_SCROLL ; scroll = $0000
; activate PPU graphics
lda #CTRL_NMI
sta PPU_CTRL ; enable NMI
lda #MASK_BG
sta PPU_MASK ; enable rendering
lda #CTRL_NMI
sta PPU_CTRL ; enable NMI
.endless
jmp .endless ; endless loop
presets/nes/ex3.asm
+2 -2
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@@ -34,10 +34,10 @@ Start:
sta PPU_ADDR ;PPU addr = 0
sta PPU_SCROLL
sta PPU_SCROLL ;scroll = 0
lda #CTRL_NMI
sta PPU_CTRL ; enable NMI
lda #MASK_BG|MASK_SPR
sta PPU_MASK ; enable rendering
lda #CTRL_NMI
sta PPU_CTRL ; enable NMI
.endless
jmp .endless ;endless loop
presets/nes/ex4.asm
+2 -2
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@@ -29,10 +29,10 @@ Start:
sta PPU_ADDR ;PPU addr = 0
sta PPU_SCROLL
sta PPU_SCROLL ;scroll = 0
lda #CTRL_NMI
sta PPU_CTRL ; enable NMI
lda #MASK_BG|MASK_SPR
sta PPU_MASK ; enable rendering
lda #CTRL_NMI
sta PPU_CTRL ; enable NMI
.endless
jmp .endless ;endless loop
presets/nes/neslib.h
+4
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@@ -287,6 +287,10 @@ void __fastcall__ nmi_set_callback(void (*callback)(void));
#define MASK_BG 0x08
#define MASK_EDGE_SPR 0x04
#define MASK_EDGE_BG 0x02
#define MASK_TINT_RED 0x20
#define MASK_TINT_BLUE 0x40
#define MASK_TINT_GREEN 0x80
#define MASK_MONO 0x01
#define NAMETABLE_A 0x2000
#define NAMETABLE_B 0x2400
presets/nes/rletitle.c
-2
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@@ -12,8 +12,6 @@ extern const byte climbr_title_rle[];
// link title screen palette and RLE nametable
//#link "climbr_title.s"
void fade_in() {
byte vb;
for (vb=0; vb<=4; vb++) {
presets/nes/road.asm
+67 -47
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@@ -5,6 +5,8 @@
seg.u ZEROPAGE
org $0
Ptr1 .word ; for temporary pointer storage
TrackFrac .byte ; fractional position along track
Speed .byte ; speed of car
@@ -24,9 +26,8 @@ ZOfs .byte ; counter to draw striped center line
Weather .byte ; bitmask for weather
Heading .word ; sky scroll pos.
XCenter = 128
NumRoadSegments = 28
NumRoadScanlines = 112
NumRoadSegments = 56
; Preprocessing result: X positions for all track segments
RoadX0 ds NumRoadSegments
@@ -43,7 +44,7 @@ InitialSpeed equ 10 ; starting speed
;;;;; NES CARTRIDGE HEADER
NES_HEADER 0,2,1,0 ; mapper 0, 2 PRGs, 1 CHR, horiz. mirror
NES_HEADER 0,2,1,1 ; mapper 0, 2 PRGs, 1 CHR, vert mirror
;;;;; START OF CODE
@@ -53,7 +54,6 @@ Start:
jsr ClearRAM ; clear RAM
jsr WaitSync ; wait for VSYNC (and PPU warmup)
jsr SetPalette ; set palette colors
jsr FillVRAM ; set PPU video RAM
jsr RoadSetup
@@ -63,10 +63,10 @@ Start:
sta PPU_ADDR ; PPU addr = $0000
sta PPU_SCROLL
sta PPU_SCROLL ; scroll = $0000
lda #MASK_BG|MASK_SPR|MASK_BG_CLIP
sta PPU_MASK ; enable rendering (first!)
lda #CTRL_NMI
sta PPU_CTRL ; enable NMI
lda #MASK_BG|MASK_SPR
sta PPU_MASK ; enable rendering
.endless
jmp .endless ; endless loop
@@ -249,43 +249,43 @@ GenTrack subroutine
; fill video RAM
FillVRAM: subroutine
txa
ldy #$20
sty PPU_ADDR
sta PPU_ADDR
ldy #$10
PPU_SETADDR $2000
lda #<RoadTables
sta Ptr1
lda #>RoadTables
sta Ptr1+1
ldx #8
ldy #0
.loop:
lda (Ptr1),y
sta PPU_DATA
adc #7
inx
iny
bne .loop
dey
inc Ptr1+1
dex
bne .loop
rts
; set palette colors
SetPalette: subroutine
ldy #$00
lda #$3f
sta PPU_ADDR
sty PPU_ADDR
ldx #32
PPU_SETADDR $3f00
ldx #16
.loop:
lda Palette,y
sta PPU_DATA
iny
dex
dex
bne .loop
rts
; set sprite 0
SetSprite0: subroutine
sta $200 ;y
lda #1 ;code
sta $200 ;ypos
lda #$00 ;code
sta $201
lda #0 ;flags
lda #$20 ;flags
sta $202
lda #8 ;xpos
lda #$fe ;xpos
sta $203
rts
@@ -314,18 +314,26 @@ SetSprite0: subroutine
ENDM
NMIHandler: subroutine
; save registers
SAVE_REGS
; setup sky scroll
lda Heading+1
sta PPU_SCROLL
lda #0
sta PPU_SCROLL
; load sprites
lda #112
; cycle palette colors
lda TPos ; track position
lsr ; / 2
and #16 ; now either 0 or 16
tay ; Y is palette offset
jsr SetPalette ; call SetPalette
PPU_SETADDR $2000 ; reset PPU address
; load sprite zero
lda #109
jsr SetSprite0
lda #$02
sta PPU_OAM_DMA
; do road calc
; setup sky scroll
lda Heading+1
sta PPU_SCROLL ; X scroll
lda #0
sta PPU_SCROLL ; Y scroll = 0
; do road calculations
jsr RoadPreSetup
jsr PreprocessCurve
jsr RoadPostFrame
@@ -337,30 +345,42 @@ NMIHandler: subroutine
; alter horiz. scroll position for each scanline
ldy #0
.loop
; pad out rest of scanline
SLEEP 78
; change scroll register
tya
lsr
lsr
lsr ; / 2
tax
lda RoadX0,x
lda RoadX0,x ; get X offset of scanline
eor #$80 ; + 128
sta PPU_SCROLL ; horiz byte
lda #0
sta PPU_SCROLL ; vert byte
SLEEP 84
sta PPU_SCROLL ; vert byte = 0
; take extra cycle every 4th line
tya
and #3
bne .skipcyc
.skipcyc
; next loop iteration
iny
cpy #112
bne .loop
cpy #NumRoadScanlines
bne .loop ; do next scanline
; restore registers and return from interrupt
RESTORE_REGS
rti
;;;;; CONSTANT DATA
align $100
;;{pal:"nes",layout:"nes"};;
Palette:
hex 1f ;background
hex 09092c00 ;bg0
hex 09091900 ;bg1
hex 09091500 ;bg2
hex 09092500 ;bg3
hex 0F3F06300F19063F0F1916063F180801
hex 0F30163F0F19163F0F1906160F180801
;;
RoadTables:
incbin "road/nametable.dat"
incbin "road/attribute.dat"
incbin "road/nametable1.dat"
incbin "road/attribute1.dat"
;;;;; CPU VECTORS
@@ -369,4 +389,4 @@ Palette:
;;;;; TILE SETS
org $10000
incbin "jroatch.chr"
incbin "road/road.chr"
presets/nes/road/attribute.dat
BIN
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Binary file not shown.
presets/nes/road/attribute1.dat
BIN
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Binary file not shown.
presets/nes/road/nametable.dat
BIN
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Binary file not shown.
presets/nes/road/nametable1.dat
BIN
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Binary file not shown.
presets/nes/road/palette.dat
BIN
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Binary file not shown.
presets/nes/road/road.chr
BIN
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Binary file not shown.
presets/nes/scrollrt.asm
+14 -6
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@@ -5,6 +5,8 @@
seg.u ZEROPAGE
org $0
SkipY ds 1
;;;;; OTHER VARIABLES
@@ -34,10 +36,10 @@ Start:
sta PPU_ADDR ; PPU addr = $0000
sta PPU_SCROLL
sta PPU_SCROLL ; scroll = $0000
lda #CTRL_NMI
sta PPU_CTRL ; enable NMI
lda #MASK_BG|MASK_SPR
sta PPU_MASK ; enable rendering
lda #CTRL_NMI
sta PPU_CTRL ; enable NMI
.endless
jmp .endless ; endless loop
@@ -69,7 +71,7 @@ SetPalette: subroutine
; set sprite 0
SetSprite0: subroutine
sta $200 ;y
lda #$01 ;code
lda #$a0 ;code
sta $201
lda #$20 ;flags
sta $202
@@ -100,6 +102,13 @@ NMIHandler: subroutine
bvc .wait1
ldy #0
.loop
; take out cycle every 4th line
tya
and #3
bne .skipcyc ; clks = 2/3/3/3
.skipcyc
; pad out rest of scanline
SLEEP 65
; alter horiz. scroll position for each scanline
tya
sec
@@ -111,10 +120,9 @@ NMIHandler: subroutine
sta PPU_SCROLL ; horiz byte
lda #0
sta PPU_SCROLL ; vert byte
; pad out rest of scanline
SLEEP 72
; next iteration of loop
iny
cpy #224
cpy #112
bne .loop
RESTORE_REGS
rti
presets/nes/skeleton.cc65
+34 -5
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@@ -1,16 +1,45 @@
#include <stdlib.h>
#include <string.h>
// include NESLIB header
#include "neslib.h"
// link the pattern table into CHR ROM
//#link "chr_generic.s"
/*{pal:"nes",layout:"nes"}*/
const char PALETTE[32] = {
0x03, // screen color
0x11,0x30,0x27,0x0, // background palette 0
0x1c,0x20,0x2c,0x0, // background palette 1
0x00,0x10,0x20,0x0, // background palette 2
0x06,0x16,0x26,0x0, // background palette 3
0x16,0x35,0x24,0x0, // sprite palette 0
0x00,0x37,0x25,0x0, // sprite palette 1
0x0d,0x2d,0x3a,0x0, // sprite palette 2
0x0d,0x27,0x2a // sprite palette 3
};
// setup PPU and tables
void setup_graphics() {
// clear sprites
oam_clear();
// set palette colors
pal_all(PALETTE);
}
void main(void)
{
pal_col(1,0x04);
pal_col(2,0x20);
pal_col(3,0x30);
setup_graphics();
// draw message
vram_adr(NTADR_A(2,2));
vram_write("HELLO, WORLD!", 12);
ppu_on_all();//enable rendering
while(1);//do nothing, infinite loop
// enable rendering
ppu_on_all();
// infinite loop
while(1) {
}
}
presets/nes/tint.c
+69
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@@ -0,0 +1,69 @@
#include <stdlib.h>
#include <string.h>
// include NESLIB header
#include "neslib.h"
// link the pattern table into CHR ROM
//#link "chr_generic.s"
/*{pal:"nes",layout:"nes"}*/
const char PALETTE[32] = {
0x2D, // screen color
0x00,0x30,0x30,0x00, // background palette 0
0x0C,0x20,0x2C,0x00, // background palette 1
0x14,0x10,0x25,0x00, // background palette 2
0x17,0x16,0x28,0x00, // background palette 3
0x16,0x35,0x24,0x00, // sprite palette 0
0x00,0x37,0x25,0x00, // sprite palette 1
0x0D,0x2D,0x3A,0x00, // sprite palette 2
0x0D,0x27,0x2A // sprite palette 3
};
// setup PPU and tables
void setup_graphics() {
// clear sprites
oam_clear();
// set palette colors
pal_all(PALETTE);
}
void main(void)
{
byte i;
setup_graphics();
// draw message
for (i=0; i<30; i++) {
vram_adr(NTADR_A(1,i));
// vram_write("\x18\x18 USE CONTROLLER FOR TINT \x18\x18\x18", 30);
vram_write(" A:red B:green \x1e\x1f:blue \x1c\x1d:mono", 30);
}
// attributes
vram_adr(0x23c0);
vram_fill(0x00, 8);
vram_fill(0x55, 8);
vram_fill(0xaa, 8);
vram_fill(0xff, 8);
vram_fill(0x11, 8);
vram_fill(0x33, 8);
vram_fill(0xdd, 8);
// enable rendering
ppu_on_all();
// infinite loop
while(1) {
byte pad = pad_poll(0);
byte mask = MASK_BG;
if (pad & PAD_A)
mask |= MASK_TINT_RED;
if (pad & PAD_B)
mask |= MASK_TINT_GREEN;
if (pad & (PAD_LEFT|PAD_RIGHT))
mask |= MASK_TINT_BLUE;
if (pad & (PAD_UP|PAD_DOWN))
mask |= MASK_MONO;
ppu_mask(mask);
}
}
presets/nes/xyscroll.asm
+13 -13
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@@ -34,10 +34,10 @@ Start:
sta PPU_ADDR ; PPU addr = $0000
sta PPU_SCROLL
sta PPU_SCROLL ; scroll = $0000
lda #CTRL_NMI
sta PPU_CTRL ; enable NMI
lda #MASK_BG|MASK_SPR
sta PPU_MASK ; enable rendering
lda #CTRL_NMI
sta PPU_CTRL ; enable NMI
.endless
jmp .endless ; endless loop
@@ -93,26 +93,26 @@ NMIHandler: subroutine
; load sprites
lda #$02
sta PPU_OAM_DMA
; wait for sprite 0
.wait0 bit PPU_STATUS
bvs .wait0
.wait1 bit PPU_STATUS
bvc .wait1
; set XY scroll
; compute first PPU_ADDR write
; compute second PPU_ADDR write
lda ScrollX
tax
tax ; ScrollX -> X
lsr
lsr
lsr
sta Temp
lda ScrollY
tay
and #$f8
tay ; ScrollY -> Y
and #$38
asl
asl
ora Temp
pha
ora Temp ; (ScrollX >> 3) | ((ScrollY & 0x38) << 2)
pha ; push onto stack
; wait for sprite 0
.wait0 bit PPU_STATUS
bvs .wait0
.wait1 bit PPU_STATUS
bvc .wait1
; set PPU_ADDR.1
lda #0
sta PPU_ADDR