RaySollium99/picodrive
1
0
Fork 0
mirror of https://github.com/RaySollium99/picodrive.git synced 2025-09-05 15:27:46 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

sms, some minor fixes and additions for sg-1000

Browse source
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
Download patch file Download diff file Expand all files Collapse all files

22
pico/mode4.c
View file

@ -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)

2
pico/sms.c
View file

@ -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) {