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z80scc: clear IUS not IP (nw)

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This commit is contained in:
Patrick Mackinlay 2020-05-08 14:26:19 +07:00
parent e235420392
commit 963a2c166d
1 changed files with 2 additions and 2 deletions
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4
src/devices/machine/z80scc.cpp
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@ -1840,8 +1840,8 @@ void z80scc_channel::do_sccreg_wr0(uint8_t data)
// loop over all interrupt sources
for (auto & elem : m_uart->m_int_state)
{
// find the first channel with an interrupt requested
if (elem & Z80_DAISY_INT)
// find the first interrupt under service
if (elem & Z80_DAISY_IEO)
{
LOGCMD("- %c found IUS bit to clear\n", 'A' + m_index);
elem = 0; // Clear IUS bit (called IEO in z80 daisy lingo)