RaySollium99/picodrive
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core, some test code for team player and 4way play

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This commit is contained in:
kub 2021-12-07 21:13:23 +01:00
parent a54716ec19
commit d650a7a268
2 changed files with 80 additions and 1 deletions
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79
pico/memory.c
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@ -256,6 +256,65 @@ out:
return value;
}
static u32 read_pad_team(int i, u32 out_bits)
{
u32 pad;
int phase = Pico.m.padTHPhase[i];
u32 value;
if (phase == 0) {
value = 0x03;
goto out;
}
if (phase == 1) {
value = 0x0f;
goto out;
}
pad = ~PicoIn.padInt[0]; // Get inverse of pad MXYZ SACB RLDU
if (phase == 8) {
value = pad & 0x0f; // ?x?x RLDU
goto out;
}
else if(phase == 9) {
value = (pad & 0xf0) >> 4; // ?x?x SACB
goto out;
}
pad = ~PicoIn.padInt[1]; // Get inverse of pad MXYZ SACB RLDU
if (phase == 12) {
value = pad & 0x0f; // ?x?x RLDU
goto out;
}
else if(phase == 13) {
value = (pad & 0xf0) >> 4; // ?x?x SACB
goto out;
}
if (phase >= 8 && pad < 16) {
value = 0x0f;
goto out;
}
value = 0;
out:
value |= (out_bits & 0x40) | ((out_bits & 0x20)>>1);
return value;
}
static u32 read_pad_4way(int i, u32 out_bits)
{
u32 pad = (PicoMem.ioports[2] & 0x70) >> 4;
u32 value = 0;
if (i == 0 && !(pad & 1))
value = read_pad_3btn(pad >> 1, out_bits);
value |= (out_bits & 0x40);
return value;
}
static u32 read_nothing(int i, u32 out_bits)
{
return 0xff;
@ -307,6 +366,14 @@ void PicoSetInputDevice(int port, enum input_device device)
func = read_pad_6btn;
break;
case PICO_INPUT_PAD_TEAM:
func = read_pad_team;
break;
case PICO_INPUT_PAD_4WAY:
func = read_pad_4way;
break;
default:
func = read_nothing;
break;
@ -337,7 +404,17 @@ NOINLINE void io_ports_write(u32 a, u32 d)
if (1 <= a && a <= 2)
{
Pico.m.padDelay[a - 1] = 0;
if (!(PicoMem.ioports[a] & 0x40) && (d & 0x40))
if (port_readers[a - 1] == read_pad_team) {
if (d & 0x40)
Pico.m.padTHPhase[a - 1] = 0;
else if ((d^PicoMem.ioports[a]) & 0x60)
Pico.m.padTHPhase[a - 1]++;
} else if (port_readers[a - 1] == read_pad_4way) {
if (a == 2 && ((PicoMem.ioports[a] ^ d) & 0x70))
Pico.m.padTHPhase[0] = 0;
if (a == 1 && !(PicoMem.ioports[a] & 0x40) && (d & 0x40))
Pico.m.padTHPhase[0]++;
} else if (!(PicoMem.ioports[a] & 0x40) && (d & 0x40))
Pico.m.padTHPhase[a - 1]++;
}