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Implemented the screen auto byte

This commit is contained in:
neauoire 2021-09-09 09:42:03 -07:00
parent 266152e260
commit a3502f1637
1 changed files with 13 additions and 13 deletions
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26
src/uxnemu.c
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@ -303,8 +303,7 @@ system_talk(Device *d, Uint8 b0, Uint8 w)
case 0x3: d->u->rst.ptr = d->dat[0x3]; break;
case 0xf: return 0;
}
if(b0 > 0x7 && b0 < 0xe)
docolors(d);
if(b0 > 0x7 && b0 < 0xe) docolors(d);
}
return 1;
}
@ -331,10 +330,16 @@ screen_talk(Device *d, Uint8 b0, Uint8 w)
Uint16 y = peek16(d->dat, 0xa);
Uint8 layer = d->dat[0xf] >> 0x6 & 0x1;
Uint8 *addr = &d->mem[peek16(d->dat, 0xc)];
if(d->dat[0xf] >> 0x7 & 0x1)
/* Sprite byte */
if(d->dat[0xf] >> 0x7 & 0x6)
ppu_2bpp(&ppu, layer, x, y, addr, d->dat[0xf] & 0xf, d->dat[0xf] >> 0x4 & 0x1, d->dat[0xf] >> 0x5 & 0x1);
else
ppu_1bpp(&ppu, layer, x, y, addr, d->dat[0xf] & 0xf, d->dat[0xf] >> 0x4 & 0x1, d->dat[0xf] >> 0x5 & 0x1);
/* Auto byte */
if(d->dat[0x6] & 0x1) poke16(d->dat, 0x8, x + 8);
if(d->dat[0x6] & 0x2) poke16(d->dat, 0xa, y + 8);
if(d->dat[0x6] & 0x3) poke16(d->dat, 0xc, peek16(d->dat, 0xc) + 8);
if(d->dat[0x6] & 0x4) poke16(d->dat, 0xc, peek16(d->dat, 0xc) + 16);
reqdraw = 1;
}
return 1;
@ -506,8 +511,7 @@ static int
load(Uxn *u, char *filepath)
{
FILE *f;
if(!(f = fopen(filepath, "rb")))
return 0;
if(!(f = fopen(filepath, "rb"))) return 0;
fread(u->ram.dat + PAGE_PROGRAM, sizeof(u->ram.dat) - PAGE_PROGRAM, 1, f);
fprintf(stderr, "Loaded %s\n", filepath);
return 1;
@ -522,14 +526,10 @@ main(int argc, char **argv)
audio0_event = SDL_RegisterEvents(POLYPHONY);
SDL_CreateThread(stdin_handler, "stdin", NULL);
if(argc < 2)
return error("usage", "uxnemu file.rom");
if(!uxn_boot(&u))
return error("Boot", "Failed to start uxn.");
if(!load(&u, argv[1]))
return error("Load", "Failed to open rom.");
if(!init())
return error("Init", "Failed to initialize emulator.");
if(argc < 2) return error("usage", "uxnemu file.rom");
if(!uxn_boot(&u)) return error("Boot", "Failed to start uxn.");
if(!load(&u, argv[1])) return error("Load", "Failed to open rom.");
if(!init()) return error("Init", "Failed to initialize emulator.");
/* system */ devsystem = uxn_port(&u, 0x0, system_talk);
/* console */ devconsole = uxn_port(&u, 0x1, console_talk);