Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-25 09:50:04 +03:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

fix cmos i/o

Browse Source
This commit is contained in:
hap 2015-10-31 00:23:23 +01:00
parent c7cf9ee627
commit 2c899f31ac
1 changed files with 21 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
src/devices/cpu/hmcs40/hmcs40.c
View File

@ -178,14 +178,14 @@ void hmcs40_cpu_device::device_start()
reset_prescaler();
// resolve callbacks
m_read_r0.resolve_safe(0);
m_read_r1.resolve_safe(0);
m_read_r2.resolve_safe(0);
m_read_r3.resolve_safe(0);
m_read_r4.resolve_safe(0);
m_read_r5.resolve_safe(0);
m_read_r6.resolve_safe(0);
m_read_r7.resolve_safe(0);
m_read_r0.resolve_safe(m_polarity & 0xf);
m_read_r1.resolve_safe(m_polarity & 0xf);
m_read_r2.resolve_safe(m_polarity & 0xf);
m_read_r3.resolve_safe(m_polarity & 0xf);
m_read_r4.resolve_safe(m_polarity & 0xf);
m_read_r5.resolve_safe(m_polarity & 0xf);
m_read_r6.resolve_safe(m_polarity & 0xf);
m_read_r7.resolve_safe(m_polarity & 0xf);
m_write_r0.resolve_safe();
m_write_r1.resolve_safe();
@ -196,7 +196,7 @@ void hmcs40_cpu_device::device_start()
m_write_r6.resolve_safe();
m_write_r7.resolve_safe();
m_read_d.resolve_safe(0);
m_read_d.resolve_safe(m_polarity);
m_write_d.resolve_safe();
// zerofill
@ -293,10 +293,10 @@ void hmcs40_cpu_device::device_reset()
// clear i/o
m_d = m_polarity;
for (int i = 0; i < 16; i++)
hmcs40_cpu_device::write_d(i, 0);
hmcs40_cpu_device::write_d(i, m_polarity);
for (int i = 0; i < 8; i++)
hmcs40_cpu_device::write_r(i, 0);
hmcs40_cpu_device::write_r(i, m_polarity & 0xf);
}
@ -322,13 +322,16 @@ UINT8 hmcs40_cpu_device::read_r(int index)
case 7: inp = m_read_r7(index, 0xff); break;
}
return ((inp ^ m_polarity) | m_r[index]) & 0xf;
if (m_polarity)
return (inp & m_r[index]) & 0xf;
else
return (inp | m_r[index]) & 0xf;
}
void hmcs40_cpu_device::write_r(int index, UINT8 data)
{
index &= 7;
data = (data ^ m_polarity) & 0xf;
data &= 0xf;
m_r[index] = data;
switch (index)
@ -348,13 +351,16 @@ int hmcs40_cpu_device::read_d(int index)
{
index &= 15;
return ((m_read_d(index, 0xffff) ^ m_polarity) | m_d) >> index & 1;
if (m_polarity)
return (m_read_d(index, 0xffff) & m_d) >> index & 1;
else
return (m_read_d(index, 0xffff) | m_d) >> index & 1;
}
void hmcs40_cpu_device::write_d(int index, int state)
{
index &= 15;
state = (((state) ? 1 : 0) ^ m_polarity) & 1;
state = (state) ? 1 : 0;
m_d = (m_d & ~(1 << index)) | state << index;
m_write_d(index, m_d, 0xffff);