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machine/ncr5385.cpp: clear status bits first when updating so they aren't stuck on (#13109)

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Co-authored-by: AdamB <adam@light-up.co.uk>
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Adam Billyard 2024-12-23 19:49:20 +00:00 committed by GitHub
parent 4881a08752
commit ff6d52d56a
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1 changed files with 6 additions and 0 deletions
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6
src/devices/machine/ncr5385.cpp
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@ -245,6 +245,9 @@ u8 ncr5385_device::aux_status_r()
if (!m_int_status)
{
// mask out any bits
data &= ~(AUX_STATUS_MSG | AUX_STATUS_CD | AUX_STATUS_IO);
// return current phase
u32 const ctrl = scsi_bus->ctrl_r();
if (ctrl & S_MSG)
@ -829,6 +832,9 @@ void ncr5385_device::update_int()
{
m_cmd = 0;
// mask out any bits
m_aux_status &= ~(AUX_STATUS_MSG | AUX_STATUS_CD | AUX_STATUS_IO);
// latch current phase
u32 const ctrl = scsi_bus->ctrl_r();
if (ctrl & S_MSG)