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taitopjc.c: simulate DSP boot. (nw)

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This commit is contained in:
Ville Linde 2014-05-13 16:54:44 +00:00
parent af10577a30
commit 626aed8fab
1 changed files with 41 additions and 33 deletions
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74
src/mame/drivers/taitopjc.c
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@ -93,6 +93,8 @@ public:
UINT32 screen_update_taitopjc(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
DECLARE_DRIVER_INIT(optiger);
UINT16 m_dsp_ram[0x1000];
};
void taitopjc_state::video_start()
@ -211,20 +213,6 @@ WRITE64_MEMBER(taitopjc_state::video_w)
}
}
/*
static UINT16 com_ram[256] =
{
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x434F, 0x4D4E, 0x4F4B, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, // COMNOK
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x574F, 0x524B, 0x4F4B, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, // WORKOK
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x5355, 0x4E44, 0x4F4B, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, // SUNDOK
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
};
*/
READ64_MEMBER(taitopjc_state::ppc_common_r)
{
UINT64 r = 0;
@ -263,20 +251,19 @@ READ64_MEMBER(taitopjc_state::ppc_common_r)
return r;
}
static UINT32 dsp_value = 0x4f4b0000;
static UINT16 dsp_ram[0x1000];
READ64_MEMBER(taitopjc_state::dsp_r)
{
UINT64 r = 0;
if (offset == 0x7fe)
if (ACCESSING_BITS_48_63)
{
if (!(mem_mask & U64(0xffffffff00000000)))
{
r |= (UINT64)(dsp_value) << 32;
}
int addr = offset * 2;
r |= (UINT64)(m_dsp_ram[addr+0]) << 48;
}
if (ACCESSING_BITS_16_31)
{
int addr = offset * 2;
r |= (UINT64)(m_dsp_ram[addr+1]) << 16;
}
return r;
@ -284,15 +271,15 @@ READ64_MEMBER(taitopjc_state::dsp_r)
WRITE64_MEMBER(taitopjc_state::dsp_w)
{
logerror("dsp_w: %08X, %08X%08X, %08X%08X\n", offset, (UINT32)(data >> 32), (UINT32)(data), (UINT32)(mem_mask >> 32), (UINT32)(mem_mask));
printf("dsp_w: %08X, %08X%08X, %08X%08X\n", offset, (UINT32)(data >> 32), (UINT32)(data), (UINT32)(mem_mask >> 32), (UINT32)(mem_mask));
if (offset != 0x7fe)
{
logerror("dsp_w: %08X, %08X%08X, %08X%08X\n", offset, (UINT32)(data >> 32), (UINT32)(data), (UINT32)(mem_mask >> 32), (UINT32)(mem_mask));
}
if (offset == 0x7fe)
{
if (!(mem_mask & U64(0xffffffff00000000)))
{
dsp_value = data >> 32;
}
#if 0
{
int i;
@ -307,15 +294,34 @@ WRITE64_MEMBER(taitopjc_state::dsp_w)
#endif
}
if (!(mem_mask & U64(0xffff000000000000)))
if (ACCESSING_BITS_48_63)
{
int addr = offset * 2;
dsp_ram[addr+0] = (data >> 48) & 0xffff;
m_dsp_ram[addr+0] = (data >> 48) & 0xffff;
}
if (!(mem_mask & U64(0x00000000ffff0000)))
if (ACCESSING_BITS_16_31)
{
int addr = offset * 2;
dsp_ram[addr+1] = (data >> 16) & 0xffff;
m_dsp_ram[addr+1] = (data >> 16) & 0xffff;
}
if (offset == 0x7fe && ACCESSING_BITS_48_63)
{
UINT16 w = data >> 48;
if (w == 0x4450)
{
m_dsp_ram[0xffc] = 0;
}
else if (w == 0x4558)
{
m_dsp_ram[0xffc] = 0;
}
else if (w == 0x5349)
{
m_dsp_ram[0xffc] = 0;
}
}
}
@ -417,6 +423,8 @@ void taitopjc_state::machine_reset()
m_soundcpu->set_input_line(INPUT_LINE_RESET, ASSERT_LINE);
m_maincpu->set_input_line(INPUT_LINE_RESET, ASSERT_LINE);
m_dsp_ram[0x0ffc] = 0x4f4b;
}