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16. MEMORY MODULE SOCKET (U17)
The ZT 8907's multi-purpose memory module socket (U17) has three functions,
configured through jumpers W2 and W4. The functions are listed below and discussed
in the following topics.
•
BIOS recovery
•
User Static RAM
•
STAR SYSTEM Video Emulation SRAM
Memory Module Socket (U17)
Memory Module Socket U17
Pin 1
BIOS RECOVERY
If the ZT 8907's BIOS becomes corrupted, recover it by installing a PROM programmed
with the BIOS into socket (U17). The PROM allows the board to boot and the BIOS to
be reflashed. To order the PROM (ZT 95204), contact Ziatech.
The steps below explain how to boot from the boot socket and reflash the BIOS. For
more details, see the
Ziatech Industrial Computer System Manual for BIOS Version 4
,
or refer to the Technical Briefs maintained on Ziatech's FTP site located at