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keytronic_pc3270: Correct INT0 line polarity (fixes keyboard error on tosh1000)

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This commit is contained in:
AJR 2018-06-03 09:54:28 -04:00
parent 9613b35b82
commit 29c415709e
1 changed files with 2 additions and 5 deletions
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7
src/devices/bus/pc_kbd/keytro.cpp
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@ -458,7 +458,7 @@ const tiny_rom_entry *pc_kbd_keytronic_pc3270_device::device_rom_region() const
WRITE_LINE_MEMBER( pc_kbd_keytronic_pc3270_device::clock_write ) WRITE_LINE_MEMBER( pc_kbd_keytronic_pc3270_device::clock_write )
{ {
m_cpu->set_input_line(MCS51_INT0_LINE, state ); m_cpu->set_input_line(MCS51_INT0_LINE, state ? CLEAR_LINE : ASSERT_LINE);
} }
@ -619,10 +619,7 @@ READ8_MEMBER( pc_kbd_keytronic_pc3270_device::p3_read )
{ {
uint8_t data = m_p3; uint8_t data = m_p3;
data &= ~0x14; data &= ~0x10;
/* -INT0 signal */
data |= (clock_signal() ? 0x04 : 0x00);
/* T0 signal */ /* T0 signal */
data |= (data_signal() ? 0x00 : 0x10); data |= (data_signal() ? 0x00 : 0x10);