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Fixed TH Control Method when TR is active, fixes input detection in 3D Lemmings

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This commit is contained in:
Angelo Salese 2013-02-11 01:18:44 +00:00
parent 3fa4ce2abb
commit 5d1bce6d33
2 changed files with 21 additions and 6 deletions
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4
src/mame/machine/scudsp.c
View File

@ -431,6 +431,10 @@ static void dsp_operation(address_space &space)
case 0x2: /* OR */
i3 = dsp_reg.acl.si | dsp_reg.pl.si;
dsp_reg.alu = (UINT64)(UINT32)i3;
/* TODO: Croc and some early Psygnosis games wants Z to be 1 when the result of this one is negative.
Needs HW tests ... */
if(i3 < 0)
i3 = 0;
SET_Z(i3 == 0);
SET_C(0);
SET_S(i3 < 0);

23
src/mame/machine/smpc.c
View File

@ -864,20 +864,31 @@ UINT8 saturn_state::smpc_th_control_mode(UINT8 pad_n)
const char *const padnames[] = { "JOY1", "JOY2" };
UINT8 res = 0;
th = (pad_n == 0) ? ((m_smpc.PDR1>>6) & 1) : ((m_smpc.PDR2>>6) & 1);
th = (pad_n == 0) ? ((m_smpc.PDR1>>5) & 3) : ((m_smpc.PDR2>>6) & 3);
if (LOG_SMPC) printf("SMPC: SH-2 TH control mode, returning pad data %d for phase %d\n",pad_n+1, th);
switch(th)
{
case 1:
res = th<<7;
/* TODO: 3D Lemmings bogusly enables TH Control mode, wants this to return the ID, needs HW tests. */
case 3:
res = th<<6;
res |= 0x14;
res |= machine().root_device().ioport(padnames[pad_n])->read() & 8; // L
break;
case 2:
res = th<<6;
// 1 C B Right Left Down Up
res|= (((machine().root_device().ioport(padnames[pad_n])->read()>>4)) & 0x30); // C & B
res|= (((machine().root_device().ioport(padnames[pad_n])->read()>>12)) & 0xf);
break;
case 1:
res = th<<6;
res |= 0x10;
res |= (machine().root_device().ioport(padnames[pad_n])->read()>>4) & 0xf; // R, X, Y, Z
break;
case 0:
res = th<<7;
res = th<<6;
// 0 Start A 0 0 Down Up
res|= (((machine().root_device().ioport(padnames[pad_n])->read()>>6)) & 0x30); // Start & A
res|= (((machine().root_device().ioport(padnames[pad_n])->read()>>12)) & 0x3);
@ -997,10 +1008,10 @@ WRITE8_MEMBER( saturn_state::saturn_SMPC_w )
m_smpc.SF = data & 1; // hand-shake flag
if(offset == 0x75) // PDR1
m_smpc.PDR1 = (data & m_smpc.DDR1);
m_smpc.PDR1 = data & 0x7f;
if(offset == 0x77) // PDR2
m_smpc.PDR2 = (data & m_smpc.DDR2);
m_smpc.PDR2 = data & 0x7f;
if(offset == 0x79)
m_smpc.DDR1 = data & 0x7f;