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author Fabio Priuli <etabeta78@users.noreply.github.com>2009-10-09 19:07:02 +0000
committer Fabio Priuli <etabeta78@users.noreply.github.com>2009-10-09 19:07:02 +0000
commit0f3381a8314ff0f914d448c6fbd6eae6bf3e1e00 (patch)
treeee289358baa380fb683f3e5f8a2e04a312c17aaa /src
parenta52fce206d4368e5e27edf852d9151efaf08da8f (diff)
Fix for [MT03470]: backfirea: Game mode setting error on startup
as per comment in the source, only low IN2 should be used with vblank from IN3
Diffstat (limited to 'src')
-rw-r--r--src/mame/drivers/backfire.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/src/mame/drivers/backfire.c b/src/mame/drivers/backfire.c
index f080f7a5845..e8ad1c307ff 100644
--- a/src/mame/drivers/backfire.c
+++ b/src/mame/drivers/backfire.c
@@ -227,23 +227,23 @@ static VIDEO_UPDATE(backfire)
static READ32_HANDLER(backfire_eeprom_r)
{
/* some kind of screen indicator? checked by backfira set before it will boot */
- int backfire_screen = mame_rand(space->machine)&1;
- return ((eeprom_read_bit()<<24) | input_port_read(space->machine, "IN0")
- | ((input_port_read(space->machine, "IN2") & ~0x40) <<16)
- | ((input_port_read(space->machine, "IN3") & 0x40) <<16)) ^ (backfire_screen << 26) ;
+ int backfire_screen = mame_rand(space->machine) & 1;
+ return ((eeprom_read_bit() << 24) | input_port_read(space->machine, "IN0")
+ | ((input_port_read(space->machine, "IN2") & 0xbf) << 16)
+ | ((input_port_read(space->machine, "IN3") & 0x40) << 16)) ^ (backfire_screen << 26) ;
}
static READ32_HANDLER(backfire_control2_r)
{
-// logerror("%08x:Read eprom %08x (%08x)\n",cpu_get_pc(space->cpu),offset<<1,mem_mask);
- return (eeprom_read_bit()<<24) | input_port_read(space->machine, "IN1") | (input_port_read(space->machine, "IN1")<<16);
+// logerror("%08x:Read eprom %08x (%08x)\n", cpu_get_pc(space->cpu), offset << 1, mem_mask);
+ return (eeprom_read_bit() << 24) | input_port_read(space->machine, "IN1") | (input_port_read(space->machine, "IN1") << 16);
}
#ifdef UNUSED_FUNCTION
static READ32_HANDLER(backfire_control3_r)
{
-// logerror("%08x:Read eprom %08x (%08x)\n",cpu_get_pc(space->cpu),offset<<1,mem_mask);
- return (eeprom_read_bit()<<24) | input_port_read(space->machine, "IN2") | (input_port_read(space->machine, "IN2")<<16);
+// logerror("%08x:Read eprom %08x (%08x)\n", cpu_get_pc(space->cpu), offset << 1, mem_mask);
+ return (eeprom_read_bit() << 24) | input_port_read(space->machine, "IN2") | (input_port_read(space->machine, "IN2") << 16);
}
#endif