diff options
Diffstat (limited to 'src')
-rw-r--r-- | src/devices/machine/ins8250.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/devices/machine/ins8250.cpp b/src/devices/machine/ins8250.cpp index 1703f5b38e8..6607d7844da 100644 --- a/src/devices/machine/ins8250.cpp +++ b/src/devices/machine/ins8250.cpp @@ -235,7 +235,7 @@ WRITE8_MEMBER( ins8250_uart_device::ins8250_w ) } else { - if (m_regs.lsr & 0x20) + if ((m_regs.lsr & 0x20) && (data & COM_INT_PENDING_TRANSMITTER_HOLDING_REGISTER_EMPTY)) trigger_int(COM_INT_PENDING_TRANSMITTER_HOLDING_REGISTER_EMPTY); m_regs.ier = data; update_interrupt(); |