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Turns out those 'redundant' NULL checks were there for a reason. Balls. No whatsnew.

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This commit is contained in:
Ryan Holtz 2010-08-27 12:11:31 +00:00
parent af0b52857b
commit 44bbd47830
1 changed files with 16 additions and 4 deletions
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20
src/emu/machine/ins8154.c
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@ -141,24 +141,36 @@ READ8_DEVICE_HANDLER_TRAMPOLINE(ins8154, ins8154_r)
switch (offset)
{
case 0x20:
val = devcb_call_read8(&m_in_a_func, 0);
if(m_in_a_func.read != NULL)
{
val = devcb_call_read8(&m_in_a_func, 0);
}
m_in_a = val;
break;
case 0x21:
val = devcb_call_read8(&m_in_b_func, 0);
if(m_in_b_func.read != NULL)
{
val = devcb_call_read8(&m_in_b_func, 0);
}
m_in_b = val;
break;
default:
if (offset < 0x08)
{
val = (devcb_call_read8(&m_in_a_func, 0) << (8 - offset)) & 0x80;
if(m_in_a_func.read != NULL)
{
val = (devcb_call_read8(&m_in_a_func, 0) << (8 - offset)) & 0x80;
}
m_in_a = val;
}
else
{
val = (devcb_call_read8(&m_in_b_func, 0) << (8 - (offset >> 4))) & 0x80;
if(m_in_b_func.read != NULL)
{
val = (devcb_call_read8(&m_in_b_func, 0) << (8 - (offset >> 4))) & 0x80;
}
m_in_b = val;
}
break;