Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-26 18:23:08 +03:00
Code Issues Actions 29 Packages Projects Releases Wiki Activity

"if( address < 0x800000)" was useless

Browse Source
This commit is contained in:
Michaël Banaan Ananas 2013-06-01 15:35:19 +00:00
parent 3f37f6af54
commit f77bd512cd
1 changed files with 9 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
src/emu/sound/ymf271.c
View File

@ -1323,23 +1323,15 @@ void ymf271_device::device_timer(emu_timer &timer, device_timer_id id, int param
UINT8 ymf271_device::ymf271_read_ext_memory(UINT32 address) UINT8 ymf271_device::ymf271_read_ext_memory(UINT32 address)
{ {
if( !m_ext_read_handler.isnull() ) if( !m_ext_read_handler.isnull() )
{
return m_ext_read_handler(address); return m_ext_read_handler(address);
}
else else
{ return m_rom[address];
if( address < 0x800000)
return m_rom[address];
}
return 0xff;
} }
void ymf271_device::ymf271_write_ext_memory(UINT32 address, UINT8 data) void ymf271_device::ymf271_write_ext_memory(UINT32 address, UINT8 data)
{ {
if( !m_ext_write_handler.isnull() ) if( !m_ext_write_handler.isnull() )
{
m_ext_write_handler(address, data); m_ext_write_handler(address, data);
}
} }
void ymf271_device::ymf271_write_timer(int data) void ymf271_device::ymf271_write_timer(int data)
@ -1376,11 +1368,13 @@ void ymf271_device::ymf271_write_timer(int data)
case 0x13: case 0x13:
if (data & 1) if (data & 1)
{ // timer A load {
// timer A load
m_timerAVal = m_timerA; m_timerAVal = m_timerA;
} }
if (data & 2) if (data & 2)
{ // timer B load {
// timer B load
m_timerBVal = m_timerB; m_timerBVal = m_timerB;
} }
if (data & 4) if (data & 4)
@ -1394,7 +1388,8 @@ void ymf271_device::ymf271_write_timer(int data)
m_enable |= 8; m_enable |= 8;
} }
if (data & 0x10) if (data & 0x10)
{ // timer A reset {
// timer A reset
m_irqstate &= ~1; m_irqstate &= ~1;
m_status &= ~1; m_status &= ~1;
@ -1405,7 +1400,8 @@ void ymf271_device::ymf271_write_timer(int data)
m_timA->adjust(period, 0, period); m_timA->adjust(period, 0, period);
} }
if (data & 0x20) if (data & 0x20)
{ // timer B reset {
// timer B reset
m_irqstate &= ~2; m_irqstate &= ~2;
m_status &= ~2; m_status &= ~2;