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-vp415: Fixed 2PPR error 52, now fails with error 53. [Ryan Holtz]

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This commit is contained in:
mooglyguy 2018-04-18 19:59:02 +02:00
parent 258cff6e3f
commit 6b608a21a9
1 changed files with 28 additions and 3 deletions
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31
src/mame/drivers/vp415.cpp
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@ -34,8 +34,9 @@
TODO:
- Module W has a NEC D8041AHC which has not yet been dumped. A dump
will be necessary to properly emulate the player.
- Driver currently fails the initial self-test with code 052. Per
the service manual, code 52 means "no 2ppr pulse".
- Driver currently fails the initial self-test with code 053. Per
the service manual, code 053 means "no lead-in code at start-up of
player (diagnostics)".
***************************************************************************/
@ -72,6 +73,7 @@ public:
virtual void machine_reset() override;
virtual void machine_start() override;
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
@ -120,6 +122,8 @@ public:
static const char* CHARGEN_TAG;
static const char* SYNCGEN_TAG;
static const device_timer_id DRIVE_2PPR_ID;
protected:
// CPU Board enums
enum
@ -263,6 +267,8 @@ protected:
uint8_t m_drive_rad_mir_dac;
uint8_t m_drive_i8255_pb;
emu_timer *m_drive_2ppr_timer;
uint8_t m_drive_2ppr;
};
/*static*/ const char* vp415_state::Z80CPU_TAG = "z80cpu";
@ -282,6 +288,8 @@ protected:
/*static*/ const char* vp415_state::CHARGEN_TAG = "mb88303";
/*static*/ const char* vp415_state::SYNCGEN_TAG = "saa1043";
/*static*/ const device_timer_id vp415_state::DRIVE_2PPR_ID = 0;
void vp415_state::machine_reset()
{
m_sel34 = 0;
@ -301,12 +309,29 @@ void vp415_state::machine_reset()
m_drive_pc_bits = I8255PC_DISC_REFLECTION | I8255PC_NOT_FOCUSED;
m_drive_rad_mir_dac = 0;
m_drive_2ppr = 0;
m_drive_2ppr_timer = timer_alloc(DRIVE_2PPR_ID);
m_drive_2ppr_timer->adjust(attotime::from_msec(10));
}
void vp415_state::machine_start()
{
}
void vp415_state::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
{
switch (id)
{
case DRIVE_2PPR_ID:
m_drive_2ppr ^= I8155PB_2PPR;
m_drive_2ppr_timer->adjust(attotime::from_msec(10));
break;
default:
break;
}
}
WRITE_LINE_MEMBER(vp415_state::refv_w)
{
m_refv = state;
@ -510,7 +535,7 @@ void vp415_state::ctrlmcu_program_map(address_map &map)
READ8_MEMBER(vp415_state::drive_i8155_pb_r)
{
uint8_t ret = I8155PB_FRLOCK;
uint8_t ret = I8155PB_FRLOCK | m_drive_2ppr;
if (m_drive_rad_mir_dac >= 0x7e && m_drive_rad_mir_dac < 0x82 && BIT(m_drive_i8255_pb, I8255PB_RLS_N_BIT))
ret |= I8155PB_RAD_MIR;
logerror("%s: drive_i8155_pb_r: %02x\n", machine().describe_context(), ret);