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Sketchy CD on/off command, useful to test out CD features in diag menu

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This commit is contained in:
Angelo Salese 2013-03-21 00:43:25 +00:00
parent da0ff019f0
commit 549ecdccdd
1 changed files with 16 additions and 4 deletions
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20
src/emu/machine/smpc.c
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@ -220,6 +220,14 @@ static TIMER_CALLBACK( smpc_sound_enable )
state->m_smpc.SF = 0x00; //clear hand-shake flag
}
static TIMER_CALLBACK( smpc_cd_enable )
{
saturn_state *state = machine.driver_data<saturn_state>();
state->m_smpc.OREG[31] = param + 0x08; //read-back for last command issued
state->m_smpc.SF = 0x08; //clear hand-shake flag (TODO: diagnostic wants this to have bit 3 high)
}
static void smpc_system_reset(running_machine &machine)
{
saturn_state *state = machine.driver_data<saturn_state>();
@ -699,8 +707,11 @@ static void smpc_comreg_exec(address_space &space, UINT8 data, UINT8 is_stv)
space.machine().scheduler().timer_set(attotime::from_usec(100), FUNC(smpc_sound_enable),data & 1);
break;
/*CD (SH-1) ON/OFF */
//case 0x08:
//case 0x09:
case 0x08:
case 0x09:
printf ("SMPC: CD %s\n",(data & 1) ? "off" : "on");
space.machine().scheduler().timer_set(attotime::from_usec(40), FUNC(smpc_cd_enable),data & 1);
break;
case 0x0d:
if(LOG_SMPC) printf ("SMPC: System Reset\n");
smpc_system_reset(space.machine());
@ -850,7 +861,7 @@ WRITE8_HANDLER( stv_SMPC_w )
smpc_comreg_exec(space,data,1);
// we've processed the command, clear status flag
if(data != 0x10 && data != 0x02 && data != 0x03 && data != 0xe && data != 0xf && data != 0x19 && data != 0x1a)
if(data != 0x10 && data != 0x02 && data != 0x03 && data != 0x08 && data != 0x09 && data != 0xe && data != 0xf && data != 0x19 && data != 0x1a)
{
state->m_smpc.OREG[31] = data; //read-back command
state->m_smpc.SF = 0x00;
@ -1010,6 +1021,7 @@ READ8_MEMBER( saturn_state::saturn_SMPC_r )
switch(cur_ddr & 0x60)
{
case 0x00: break; // in diag test
case 0x40: return_data = smpc_th_control_mode(offset == 0x77); break;
case 0x60: return_data = smpc_direct_mode(offset == 0x77); break;
default:
@ -1060,7 +1072,7 @@ WRITE8_MEMBER( saturn_state::saturn_SMPC_w )
smpc_comreg_exec(space,data,0);
// we've processed the command, clear status flag
if(data != 0x10 && data != 2 && data != 3 && data != 6 && data != 7 && data != 0x0e && data != 0x0f && data != 0x19 && data != 0x1a)
if(data != 0x10 && data != 2 && data != 3 && data != 6 && data != 7 && data != 0x08 && data != 0x09 && data != 0x0e && data != 0x0f && data != 0x19 && data != 0x1a)
{
m_smpc.OREG[31] = data; //read-back for last command issued
m_smpc.SF = 0x00; //clear hand-shake flag