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-ncr5390: If a command is already in the FIFO, don't block select arbitration, nw

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This commit is contained in:
mooglyguy 2018-09-10 18:14:06 +02:00
parent 6465de84d3
commit 4cfef07a7f
1 changed files with 1 additions and 1 deletions
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src/devices/machine/ncr5390.cpp
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@ -340,7 +340,7 @@ void ncr5390_device::step(bool timeout)
case DISC_SEL_ARBITRATION_INIT: case DISC_SEL_ARBITRATION_INIT:
// wait until a command is in the fifo // wait until a command is in the fifo
if (!fifo_pos || (dma_command && !(status & S_TC0))) if (!fifo_pos && dma_command && !(status & S_TC0))
break; break;
command_length = derive_msg_size(fifo[0]); command_length = derive_msg_size(fifo[0]);