disp4096: now vapor lock is working

This commit is contained in:
Vince Weaver 2018-07-25 13:27:20 -04:00
parent 51dd5e9a25
commit 7c8eefc868
3 changed files with 45 additions and 279 deletions

View File

@ -54,46 +54,18 @@ WAIT = $FCA8 ;; delay 1/2(26+27A+5A^2) us
sta DRAW_PAGE
; Clear Page0
lda #$00
sta DRAW_PAGE
jsr clear_gr
; draw border line
; lda #$55
; ldy #38
; jsr hline
; lda #$00
; sta DRAW_PAGE
; jsr clear_gr
; Clear Page1
lda #$4
sta DRAW_PAGE
lda #$0
jsr clear_gr
;==================
; Draw Blue Border on screen
;==================
; F -> 7 -> 6 -> 2
; lda #$0
; sta DRAW_PAGE
; lda #$6f
; ldy #0
; jsr hline
; lda #$72
; ldy #38
; jsr hline
; lda #$4
; sta DRAW_PAGE
; lda #$27
; ldy #0
; jsr hline
; lda #$f6
; ldy #38
; jsr hline
; lda #$0
; jsr clear_gr
;=============================
; Load graphic page0
@ -101,7 +73,7 @@ WAIT = $FCA8 ;; delay 1/2(26+27A+5A^2) us
lda #$0c
sta BASH
lda #$00
sta BASL ; load image to page0 $400
sta BASL ; load image to $c00
lda #>(katahdin_low)
sta GBASH
@ -109,13 +81,13 @@ WAIT = $FCA8 ;; delay 1/2(26+27A+5A^2) us
sta GBASL
jsr load_rle_gr
lda #0
lda #4
sta DRAW_PAGE
jsr gr_copy_to_current
jsr gr_copy_to_current ; copy to page1
; GR part
bit PAGE0
bit PAGE1
bit LORES ; 4
bit SET_GR ; 4
bit FULLGR ; 4
@ -129,7 +101,7 @@ WAIT = $FCA8 ;; delay 1/2(26+27A+5A^2) us
lda #$0c
sta BASH
lda #$00
sta BASL ; load image to page0 $400
sta BASL ; load image to $c00
lda #>(katahdin_high)
sta GBASH
@ -137,17 +109,32 @@ WAIT = $FCA8 ;; delay 1/2(26+27A+5A^2) us
sta GBASL
jsr load_rle_gr
lda #4
lda #0
sta DRAW_PAGE
jsr gr_copy_to_current
; GR part
bit PAGE1
bit PAGE0
jsr wait_until_keypressed
;==============================
; setup graphics for vapor lock
;==============================
; Clear Page0
lda #$0
sta DRAW_PAGE
lda #$44
jsr clear_gr
; Make screen half green
lda #$11
ldy #24
jsr clear_page_loop
;=====================================================
; attempt vapor lock
@ -168,7 +155,7 @@ WAIT = $FCA8 ;; delay 1/2(26+27A+5A^2) us
; the line (max 3 repeats in that case)
vapor_lock_loop: ; first make sure we have all zeroes
LDA #$00
LDA #$11
zxloop:
LDX #$04
wiloop:
@ -177,7 +164,7 @@ wiloop:
DEX
BNE wiloop
LDA #$72 ; now look for our border color (4 times)
LDA #$44 ; now look for our border color (4 times)
zloop:
LDX #$04
qloop:
@ -186,10 +173,9 @@ qloop:
DEX
BNE qloop
; found first line of low-res grey, need to kill time
; until we can enter at top of screen
; so we want roughly 10 lines * 4 = 40*65 = 2600+4550-65
; +4550 - 65 (for the scanline we missed) = 7085 - 12 = 7073
; found first line of black after green, at up to line 26 on screen
; so we want roughly 22 lines * 4 = 88*65 = 5720 + 4550 = 10270
; - 65 (for the scanline we missed) = 10205 - 12 = 10193
; GR part
@ -197,16 +183,11 @@ qloop:
bit SET_GR ; 4
bit FULLGR ; 4
; Try X=38 Y=52 cycles=10193
; want 7073
; Try X=26 Y=52 cycles=7073
lda #0 ; 2
lda #0 ; 2
ldy #52 ; 2
ldy #52 ; 2
loopA:
ldx #26 ; 2
ldx #38 ; 2
loopB:
dex ; 2
bne loopB ; 2nt/3
@ -264,9 +245,7 @@ page1_loop: ; delay 115+(7 loop)+4 (bit)+4(extra)
;======================================================
; We have 4550 cycles in the vblank, use them wisely
;======================================================
; scroll_the_text should be 4550+1 -2 - 13 -13 = 4523
; rasterbars should be 4550+1 -2 - 13 -18 = 4518
; do_nothing should be 4550+1 -2 - 13 -19 = 4517
; do_nothing should be 4550+1 -2-9= 4540
jsr do_nothing ; 6
jmp display_loop ; 3
@ -276,13 +255,15 @@ page1_loop: ; delay 115+(7 loop)+4 (bit)+4(extra)
;=================================
; do nothing
;=================================
; and take 4517-6 = 4511 cycles to do it
; and take 4540-6 = 4534 cycles to do it
do_nothing:
; Try X=7 Y=110 cycles=4511
; Try X=29 Y=30 cycles=4531 R3
ldy #110 ; 2
lda TEMP ; 3
ldy #30 ; 2
loop1:
ldx #7 ; 2
ldx #29 ; 2
loop2:
dex ; 2
bne loop2 ; 2nt/3
@ -330,13 +311,6 @@ clear_page_loop:
bpl clear_page_loop
rts
gr_offsets:
.word $400,$480,$500,$580,$600,$680,$700,$780
.word $428,$4a8,$528,$5a8,$628,$6a8,$728,$7a8

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@ -1,206 +0,0 @@
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <png.h>
static int convert_color(int color) {
int c=0;
switch(color) {
case 0x000000: c=0; break; /* black */
case 0xe31e60: c=1; break; /* magenta */
case 0x604ebd: c=2; break; /* dark blue */
case 0xff44fd: c=3; break; /* purple */
case 0x00a360: c=4; break; /* dark green */
case 0x9c9c9c: c=5; break; /* grey 1 */
case 0x14cffd: c=6; break; /* medium blue */
case 0xd0c3ff: c=7; break; /* light blue */
case 0x607203: c=8; break; /* brown */
case 0xff6a3c: c=9; break; /* orange */
case 0x9d9d9d: c=10; break; /* grey 2 */
case 0xffa0d0: c=11; break; /* pink */
case 0x14f53c: c=12; break; /* bright green */
case 0xd0dd8d: c=13; break; /* yellow */
case 0x72ffd0: c=14; break; /* aqua */
case 0xffffff: c=15; break; /* white */
default:
printf("Unknown color %x\n",color);
break;
}
return c;
}
/* expects a PNG where the xsize is *2 */
int loadpng(char *filename, unsigned char **image_ptr, int *xsize, int *ysize) {
int x,y;
int color;
FILE *infile;
int debug=0;
unsigned char *image,*out_ptr;
int width, height;
int a2_color;
png_byte bit_depth;
png_structp png_ptr;
png_infop info_ptr;
png_bytep *row_pointers;
png_byte color_type;
// int number_of_passes;
unsigned char header[8];
/* open file and test for it being a png */
infile = fopen(filename, "rb");
if (infile==NULL) {
fprintf(stderr,"Error! Could not open %s\n",filename);
return -1;
}
/* Check the header */
fread(header, 1, 8, infile);
if (png_sig_cmp(header, 0, 8)) {
fprintf(stderr,"Error! %s is not a PNG file\n",filename);
return -1;
}
/* initialize stuff */
png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
if (!png_ptr) {
fprintf(stderr,"Error create_read_struct\n");
exit(-1);
}
info_ptr = png_create_info_struct(png_ptr);
if (!info_ptr) {
fprintf(stderr,"Error png_create_info_struct\n");
exit(-1);
}
png_init_io(png_ptr, infile);
png_set_sig_bytes(png_ptr, 8);
png_read_info(png_ptr, info_ptr);
width = png_get_image_width(png_ptr, info_ptr);
height = png_get_image_height(png_ptr, info_ptr);
*xsize=width/2;
*ysize=height;
color_type = png_get_color_type(png_ptr, info_ptr);
bit_depth = png_get_bit_depth(png_ptr, info_ptr);
if (debug) {
printf("PNG: width=%d height=%d depth=%d\n",width,height,bit_depth);
if (color_type==PNG_COLOR_TYPE_RGB) printf("Type RGB\n");
else if (color_type==PNG_COLOR_TYPE_RGB_ALPHA) printf("Type RGBA\n");
else if (color_type==PNG_COLOR_TYPE_PALETTE) printf("Type palette\n");
}
// number_of_passes = png_set_interlace_handling(png_ptr);
png_read_update_info(png_ptr, info_ptr);
row_pointers = (png_bytep*) malloc(sizeof(png_bytep) * height);
for (y=0; y<height; y++) {
row_pointers[y] = (png_byte*) malloc(png_get_rowbytes(png_ptr,info_ptr));
}
png_read_image(png_ptr, row_pointers);
fclose(infile);
image=calloc(width*height/2,sizeof(unsigned char));
if (image==NULL) {
fprintf(stderr,"Memory error!\n");
return -1;
}
out_ptr=image;
if (color_type==PNG_COLOR_TYPE_RGB_ALPHA) {
for(y=0;y<height;y+=2) {
for(x=0;x<width/2;x++) {
/* top color */
color= (row_pointers[y][x*2*4]<<16)+
(row_pointers[y][x*2*4+1]<<8)+
(row_pointers[y][x*2*4+2]);
if (debug) {
printf("%x ",color);
}
a2_color=convert_color(color);
/* bottom color */
color= (row_pointers[y+1][x*2*4]<<16)+
(row_pointers[y+1][x*2*4+1]<<8)+
(row_pointers[y+1][x*2*4+2]);
if (debug) {
printf("%x ",color);
}
a2_color|=(convert_color(color)<<4);
*out_ptr=a2_color;
out_ptr++;
}
if (debug) printf("\n");
}
}
else if (color_type==PNG_COLOR_TYPE_PALETTE) {
for(y=0;y<height;y+=2) {
for(x=0;x<width/2;x++) {
/* top color */
a2_color=row_pointers[y][x*2];
/* bottom color */
color=row_pointers[y+1][x*2];
a2_color|=(color<<4);
if (debug) {
printf("%x ",a2_color);
}
*out_ptr=a2_color;
out_ptr++;
}
if (debug) printf("\n");
}
}
else {
printf("Unknown color type\n");
}
/* Stripe test image */
// for(x=0;x<40;x++) for(y=0;y<40;y++) image[(y*width)+x]=y%16;
/*
Addr Row /80 %40
$400 0 0 0 0
$428 28 16 0
$450 50 32 0
$480 80 2 1
$4A8 a8 18 1
$4D0 d0 34 1
$500 100 3 2
0,0 0,1 0,2....0,39 16,0 16,1 ....16,39 32,0..32,39, X X X X X X X X
*/
*image_ptr=image;
return 0;
}

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@ -1,2 +0,0 @@
int loadpng(char *filename, unsigned char **image_ptr, int *xsize, int *ysize);