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i8279: More fine-tuning (nw)

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This commit is contained in:
AJR 2020-02-20 16:57:29 -05:00
parent aaaf9146f9
commit f923902e83
1 changed files with 3 additions and 3 deletions
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6
src/devices/machine/i8279.cpp
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@ -223,7 +223,7 @@ void i8279_device::new_key(u8 data, bool skey, bool ckey)
sl = i;
}
else
sl = m_scanner;
sl = m_scanner & 7;
new_fifo( (ckey << 7) | (skey << 6) | (sl << 3) | rl);
}
@ -302,11 +302,11 @@ void i8279_device::timer_mainloop()
u8 rl = m_in_rl_cb(0);
// see if key still down from last time
u16 key_down = (m_scanner << 8) | rl;
u16 key_down = ((m_scanner & scanner_mask) << 8) | rl;
if (key_down == m_key_down)
rl = 0xff;
else
if ((rl == 0xff) && (m_scanner == m_key_down >> 8))
if ((rl == 0xff) && ((m_scanner & scanner_mask) == m_key_down >> 8))
m_key_down = 0xffff;
// now process new key