22 Apr
2016
22 Apr
'16
4:37 p.m.
-----Original Message-----
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Robert
Jarratt
Sent: 23 April 2016 00:17
To: 'General Discussion: On-Topic and Off-Topic Posts'
<cctalk at classiccmp.org>
Subject: RE: AlphaStation 200 NVRAM Problem
imagine.
Someone mentioned there is a battery. It could be held by that, or a
module
from ST Microelectronics or Dallas Semiconductor.
The latter two tend
to
be
plastic packages that are ~28 pins or so and
taller than normal chips.
The Dallas and ST modules have RAM/real time clock and a battery in
one package.
In the case of some arcade games (Silent Scope from Konami is a big
one), once the NVRAM looses it's contents the machine wont load past
it in the bootup process. On the Sun Workstations when the modules go
bad it will boot but but the MAC address is blank. It's possible to
reprogram the contents back on the Sun workstations.
If the case of the AlphaStation is that it can't get past post without
the contents of the NVRAM, and the NVRAM is in a Dallas or STM module
then the easy solution is to get a dump of a working system, perhaps
hex edit
the
> contents to correct the MAC address, then plug it in (hopefully
> socketed.)
>
> If the NVRam is held by a CR3202 battery and a SMD SRAM chip or
> something, there would have to be a way around it being blank I'd
CR2032 again.
Just tried replacing the CR2032 again, but I get the same error :-(
Regards
Rob