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er1400: Fix loss of the first data bit on readback

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This commit is contained in:
Dirk Best 2022-09-15 13:16:06 +02:00
parent b65fa9b666
commit 0fde33c2dd
1 changed files with 2 additions and 2 deletions
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4
src/devices/machine/er1400.cpp
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@ -304,7 +304,7 @@ TIMER_CALLBACK_MEMBER(er1400_device::propagate_data)
{
if (m_code_input == 5)
{
m_data_output = BIT(m_data_register, 13);
m_data_output = BIT(m_data_register, 14);
LOG("Data output %d bit\n", m_data_output);
}
else
@ -370,7 +370,7 @@ WRITE_LINE_MEMBER(er1400_device::clock_w)
break;
case 5: // shift data out
m_data_register = (m_data_register & 0x1fff) << 1;
m_data_register = (m_data_register & 0x3fff) << 1;
m_data_propagation_timer->adjust(attotime::from_usec(20));
break;