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hooked security up using an i/o port, so it can be replaced easier on the earlier games with different security.

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This commit is contained in:
smf- 2010-07-08 21:05:37 +00:00
parent a1914b2c53
commit e32c7a357b
1 changed files with 8 additions and 16 deletions
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24
src/mame/drivers/twinkle.c
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@ -578,18 +578,6 @@ static WRITE32_HANDLER(serial_w)
*/
}
static WRITE32_DEVICE_HANDLER(security_w)
{
i2cmem_scl_write( device, ( data >> 4 ) & 1 );
i2cmem_sda_write( device, ( data >> 3 ) & 1 );
}
static READ32_DEVICE_HANDLER(security_r)
{
/* 0x4000 ?? */
return i2cmem_sda_read( device ) << 12;
}
static WRITE32_HANDLER(shared_psx_w)
{
if (mem_mask == 0xff)
@ -636,8 +624,8 @@ static ADDRESS_MAP_START( main_map, ADDRESS_SPACE_PROGRAM, 32 )
AM_RANGE(0x1f260000, 0x1f260003) AM_WRITE(serial_w)
AM_RANGE(0x1f270000, 0x1f270003) AM_DEVWRITE("security",security_w)
AM_RANGE(0x1f280000, 0x1f280003) AM_DEVREAD("security",security_r)
AM_RANGE(0x1f270000, 0x1f270003) AM_WRITE_PORT("OUTSEC")
AM_RANGE(0x1f280000, 0x1f280003) AM_READ_PORT("INSEC")
AM_RANGE(0x1f290000, 0x1f29007f) AM_DEVREADWRITE8("rtc", rtc65271_rtc_r, rtc65271_rtc_w, 0x00ff00ff)
AM_RANGE(0x1f2a0000, 0x1f2a007f) AM_DEVREADWRITE8("rtc", rtc65271_xram_r, rtc65271_xram_w, 0x00ff00ff)
AM_RANGE(0x1f2b0000, 0x1f2b00ff) AM_WRITE(twinkle_output_w)
@ -1002,6 +990,12 @@ static INPUT_PORTS_START( twinkle )
PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_COIN1)
PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_UNKNOWN)
PORT_START("OUTSEC")
PORT_BIT( 0x00000010, IP_ACTIVE_HIGH, IPT_OUTPUT ) PORT_WRITE_LINE_DEVICE("security", i2cmem_scl_write)
PORT_BIT( 0x00000008, IP_ACTIVE_HIGH, IPT_OUTPUT ) PORT_WRITE_LINE_DEVICE("security", i2cmem_sda_write)
PORT_START("INSEC")
PORT_BIT( 0x00001000, IP_ACTIVE_HIGH, IPT_OUTPUT ) PORT_READ_LINE_DEVICE("security", i2cmem_sda_read)
INPUT_PORTS_END
#define TWINKLE_BIOS \
@ -1020,8 +1014,6 @@ ROM_END
ROM_START( bmiidx )
TWINKLE_BIOS
ROM_REGION( 0x100, "security", 0 )
DISK_REGION( "cdrom0" ) // program
DISK_IMAGE_READONLY("863jaa01", 0, SHA1(aee12de1dc5dd44e5bf7b62133ed695b80999390) )