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sms, some minor fixes and additions for sg-1000

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This commit is contained in:
kub 2022-03-01 21:07:21 +00:00
parent df6c895c5c
commit e48f3f2795
2 changed files with 17 additions and 11 deletions
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22
pico/mode4.c
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@ -549,10 +549,12 @@ static void DrawDisplayM1(int scanline)
int tilex, dx, cells;
int cellskip = 0; // XXX
int maxcells = 40;
unsigned mask = pv->reg[0] & 0x2 ? 0x2000 : 0x3800; // M3: 2 bits table select
// name, color, pattern table:
nametab = PicoMem.vramb + ((pv->reg[2]<<10) & 0x3c00);
pattab = PicoMem.vramb + ((pv->reg[4]<<11) & 0x3800);
pattab = PicoMem.vramb + ((pv->reg[4]<<11) & mask);
pattab += ((scanline>>6) << 11) & ~mask; // table select bits for M3
nametab += ((scanline>>3) * maxcells);
pattab += (scanline & 0x7);
@ -593,12 +595,14 @@ static void DrawDisplayM2(int scanline)
int tilex, dx, cells;
int cellskip = 0; // XXX
int maxcells = 32;
unsigned mask = pv->reg[0] & 0x2 ? 0x2000 : 0x3800; // M3: 2 bits table select
// name, color, pattern table:
nametab = PicoMem.vramb + ((pv->reg[2]<<10) & 0x3c00);
pattab = PicoMem.vramb + ((pv->reg[4]<<11) & 0x3800);
pattab = PicoMem.vramb + ((pv->reg[4]<<11) & mask);
pattab += ((scanline>>6) << 11) & ~mask; // table select bits for M3
nametab += (scanline>>5) << 5;
nametab += (scanline>>3) << 5;
pattab += (scanline>>2) & 0x7;
tilex = cellskip & 0x1f;
@ -811,10 +815,10 @@ void PicoLineSMS(int line)
bgcolor = (Pico.video.reg[7] & 0x0f) | ((Pico.video.reg[0] & 0x04) << 2);
BackFill(bgcolor, 0, &Pico.est); // bgcolor is from 2nd palette in mode 4
if (Pico.video.reg[1] & 0x40) {
if (Pico.video.reg[0] & 0x04) DrawDisplayM4(line);
if (Pico.video.reg[0] & 0x04) DrawDisplayM4(line); // also M4+M3
else if (Pico.video.reg[1] & 0x08) DrawDisplayM2(line); // also M2+M3
else if (Pico.video.reg[1] & 0x10) DrawDisplayM1(line); // also M1+M3
else if (Pico.video.reg[0] & 0x02) DrawDisplayM3(line);
else if (Pico.video.reg[1] & 0x08) DrawDisplayM2(line);
else if (Pico.video.reg[1] & 0x10) DrawDisplayM1(line);
else DrawDisplayM0(line);
}
@ -835,10 +839,10 @@ norender:
static u16 tmspal[32] = {
// SMS palette
0x0000, 0x0000, 0x00a0, 0x00f0, 0x0a00, 0x0f00, 0x0005, 0x0ff0,
0x000a, 0x000f, 0x0055, 0x00ff, 0x0050, 0x0f0f, 0x0555, 0x0fff,
0x000a, 0x000f, 0x00aa, 0x00ff, 0x0050, 0x0f0f, 0x0aaa, 0x0fff,
// GG palette
0x0000, 0x0000, 0x04c2, 0x07d6, 0x0e55, 0x0f77, 0x055d, 0x0ee4,
0x055f, 0x077f, 0x05bd, 0x08ce, 0x04a2, 0x0b5c, 0x0ccc, 0x0fff,
0x0000, 0x0000, 0x04c2, 0x07d6, 0x0e55, 0x0f77, 0x055c, 0x0ee4,
0x055f, 0x077f, 0x05bc, 0x08ce, 0x03a2, 0x0b5c, 0x0ccc, 0x0fff,
};
void PicoDoHighPal555SMS(void)

6
pico/sms.c
View file

@ -508,14 +508,14 @@ static void xwrite(unsigned int a, unsigned char d)
// NB the sequence of mappers is crucial for the auto detection
if (Pico.m.hardware & PMS_HW_SG)
write_bank_x8k(a, d);
else {
else {
write_bank_n32k(a, d);
write_bank_sega(a, d);
write_bank_msx(a, d);
write_bank_codem(a, d);
write_bank_korea(a, d);
write_bank_n16k(a, d);
}
}
Pico.ms.mapcnt ++;
if (Pico.ms.mapper)
@ -552,6 +552,8 @@ void PicoResetMS(void)
if (PicoIn.mapper)
Pico.ms.mapper = PicoIn.mapper;
Pico.m.hardware |= PMS_HW_JAP; // default region Japan if no TMR header
if (PicoIn.regionOverride > 2)
Pico.m.hardware &= ~PMS_HW_JAP;
// check if the ROM header contains more system information
for (tmr = 0x2000; tmr < 0xbfff && tmr <= Pico.romsize; tmr *= 2) {