27 Apr
2018
27 Apr
'18
3:28 p.m.
The ones from Mouser work well enough in every system that I have used
them in. I still get the IDPROM corrupt message on boot on some systems,
but it holds the MAC and the systems boot without intervention.
I tried to repair a few and botched most of them. I know that I should
be using the GlitchWorks stuff, but it has been easier to just buy
something that I can plug in.
alan
On 4/27/18 3:15 PM, systems_glitch via cctalk wrote:
Don't get the new MK48T02/MK48T08s from Mouser et
al, they're not fully
compatible. They will retain NVRAM but the clock part is different and
you'll get an error on that (system won't autoboot). Rebuild your old
NVRAM! I made up some little boards to make the repair cleaner and faster
to do (I had about 50 NVRAMs to repair):
http://www.glitchwrks.com/2017/08/01/gw-48t02-1
There are other guides for tacking on a coin cell holder without cutting
off the entire top encapsulation, but if you do that, it may not fit under
SBus cards if you're doing it on a system that puts SBus slots over the
NVRAM.
Thanks,
Jonathan
On Fri, Apr 27, 2018 at 6:03 PM, Glen Slick via cctalk <
cctalk at classiccmp.org> wrote:
> On Fri, Apr 27, 2018 at 1:55 PM, Alan Perry via cctalk
> <cctalk at classiccmp.org> wrote:
>> - SPARCstation 1. Chassis is intact. It has a bad IDPROM; aside from that
>> it passes onboard diagnostics. It has 12M memory, no HDD now, and a 3.5"
>> floppy drive. It has no SBus cards. Aside from the IDPROM, it doesn't
>> have any issues (but I haven't run an OS on it yet). Like the SS2, it
>> needs a bath. A small portion of the plastic cover over the rear of the
>> case is broken off.
>>
>> What are these "actual parts expenses"? IDPROMs are around $25 on
Mouser.
>> SCSI HDDs start around $70 shipped on eBay and SCSI2SD are $60 plus
>> shipping to me plus the SD price. Given the price of 25 year old HDDs
> with
>> a stated service life of 5 years (according to one spec sheet that I
> read),
>> SCSI2SD looks pretty attractive.
>>
> When you say IDPROM, is that a Dallas built-in battery NVRAM type of
> thing? I have an SS1 with a dead NVRAM thing. Are the currently
> available versions of those new at Mouser fully compatible? Those are
> one of those things that the new versions aren't always fully
> compatible with the old versions for some systems, even though they
> are supposed to be.
>
> My SS1 is also in the Seattle area. If there is much demand for those
> it's probably one of those systems I'll never get around to doing
> anything with it myself. I also have a 4/110. Those seem to be a lot
> less common, and maybe more collectible.
>