C a r r i e r B o a r d
E C B - 9 0 1 A
Quick Installation Guide
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IOCHCK#
I/O channel check signal. When I/O device parity error
occurs, this signal is asserted.
IOW#
To write data to I/O port, this signal is asserted.
IOR#
To read data from I/O port, this signal is asserted.
SMEMW#
To write data to I/O memory space below 1 M address, this
signal is asserted.
SMEMR#
To read data from I/O memory space below 1 M address,
this signal is asserted.
MEMW#
To write data to I/O memory space, this signal is asserted.
MEMR#
To read data from I/O memory space, this signal is
asserted.
BALE
ISA Bus buffer latch enable.
IOCHRDY
This signal is asserted low by I/O device to extend the ISA
bus cycle.
NOWS# (ZWS#)
No wait state signal. It is asserted by I/O device to shorten
