Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-06-08 22:03:55 +03:00
Code Issues Actions 3 Packages Projects Releases Wiki Activity

pwrview: pit test

Browse Source
This commit is contained in:
cracyc 2022-01-02 21:54:13 -06:00
parent 76bc4902b8
commit 53d6b930ef
1 changed files with 17 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
src/mame/drivers/pwrview.cpp
View File

@ -286,7 +286,7 @@ u8 pwrview_state::unk3_r(offs_t offset)
m_c280 &= ~0x10; m_c280 &= ~0x10;
break; break;
case 2: case 2:
ret = (m_rts ? 0 : 0x40) | (m_dtr ? 0 : 0x80); ret = (m_rts ? 0 : 0x40) | (m_dtr ? 0 : 0x80) | 0x20;
break; break;
} }
return ret; return ret;
@ -298,9 +298,23 @@ void pwrview_state::unk3_w(offs_t offset, u8 data)
{ {
case 0: case 0:
m_c280 = data; m_c280 = data;
m_pit->set_clockin(0, BIT(data, 5) ? 1000000 : 0); m_pit->set_clockin(0, BIT(data, 7) ? 1000000 : 0);
m_pit->set_clockin(1, BIT(data, 6) ? 1000000 : 0); m_pit->set_clockin(1, BIT(data, 6) ? 1000000 : 0);
m_pit->set_clockin(2, BIT(data, 7) ? 1000000 : 0); m_pit->set_clockin(2, BIT(data, 5) ? 1000000 : 0);
if(BIT(data, 2))
{
if(!BIT(data, 6))
m_pit->set_clockin(1, 2000000);
if(!BIT(data, 7))
m_pit->set_clockin(2, 2000000);
}
else
{
if(!BIT(data, 6))
m_pit->set_clockin(1, 0);
if(!BIT(data, 7))
m_pit->set_clockin(2, 0);
}
break; break;
} }
} }