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viprp1 broke at prev commit, it really does suggest that it writes the region code to flash at reset

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This commit is contained in:
Michaël Banaan Ananas 2013-06-06 22:45:59 +00:00
parent 01326586a9
commit 9c1a16f391
1 changed files with 10 additions and 6 deletions
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16
src/mame/drivers/seibuspi.c
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@ -1092,12 +1092,7 @@ READ8_MEMBER(seibuspi_state::flashrom_read)
{
offset &= 0x1fffff;
// offset 0 goes directly to the SPI mainboard region code
// this data is not stored on the flashrom itself
if (offset == 0)
return m_region_code;
else if (offset < 0x100000)
if (offset < 0x100000)
return m_soundflash1->read(offset);
else
return m_soundflash2->read(offset & 0x0fffff);
@ -1855,6 +1850,15 @@ MACHINE_RESET_MEMBER(seibuspi_state,spi)
membank("bank1")->set_entry(0);
m_z80_lastbank = 0;
m_z80_prg_transfer_pos = 0;
// Indicated by viprp1 testing this byte on several occasions,
// it seems likely that the region code is stored on flash at reset.
m_soundflash1->write(0, 0xff);
m_soundflash1->write(0, 0x10);
m_soundflash1->write(0, m_region_code);
m_soundflash1->write(0, 0xff);
m_soundflash2->write(0, 0xff);
}
static MACHINE_CONFIG_START( spi, seibuspi_state )