Re: LL PCB repair

Actually I don't think the Rom sigs are the same for both. I seem to
recall someone stating that the 9100 does it differently come to think
of it.

as for this "When I run a test on RAM area 4000-47FF I get d0 and d1
as stuck high." It should be a ROM test, but since it seems to think
that D0 and D1 are stuck high I would assume that those datalines are
bad.

As for the Ram locations they are the same for asteroids and LL

But on the Asteroids I think the Rom region starts at 5000 and not 4800 like LL

Kevin

On Fri, Feb 22, 2013 at 5:15 PM, Andre Huijts <a.huijts@upcmail.nl> wrote:
> Question about ROM sigs, are the 9010A and 9100A sigs the same ?
>
> I also assume I'll need the Asteroids Sigs for this board...
>
>
> Op 22 feb. 2013, om 14:17 heeft Kevin Moore <talon.k@gmail.com> het volgende
> geschreven:
>
> Yeah I use those low profile ones too.
>
> This is all I have on LL notes for Rom/Prom and Ram checks
>
> Rev1
>
> Region ROM File Start - End CRC 9010A
> CPU1 034599.01 4800 - 4FFF 355A9371 65AF
> CPU1 034598.01 5000 - 57FF 9C4FFA68 AC98
> CPU1 034597.01 5800 - 5FFF
> CPU1 034572.01 6000 - 67FF 2AFF3140 D5D4
> CPU1 034571.01 6800 - 6FFF 493E24B7 C28E
> CPU1 034570.01 7000 - 77FF 2724E591 2707
> CPU1 034569.01 7800 - 7FFF B11A7D01 8644
>
> Rev2
>
> Region ROM File Start - End CRC 9010A
> CPU1 034599.01 4800 - 4FFF 355A9371 65AF
> CPU1 034598.01 5000 - 57FF 9C4FFA68 AC98
> CPU1 034597.01 5800 - 5FFF
> CPU1 034572.02 6000 - 67FF B8763EEA 206D
> CPU1 034571.02 6800 - 6FFF 77DA4B2F AC38
> CPU1 034570.01 7000 - 77FF 2724E591 2707
> CPU1 034569.02 7800 - 7FFF 72837A4E 26EA
>
> Program Ram Region
> 0000-01FF
> Vector Ram Region
> 4000-47FF
>
> This is pretty much what I do for all of them, just list the revs with the
> fluke sigs, and Ram regions for quick testing. I've not gotten around to
> actually writing scripts yet.
>
> Kevin
>
> On Thu, Feb 21, 2013 at 6:42 PM, vectorlist-steve
> <vectorlist@arcadehacking.com> wrote:
>>
>> On 2/21/2013 3:35 PM, Jess Askey wrote:
>>
>> Man.... I had an email all typed up saying that I bet $5 it was the
>> crystal but then I deleted it as I didn't want to seem like an pretentious
>> ass. :-) Now Im just a groveling-wannbe-ass. :-) :-)
>>
>>
>>
>> Funny, I did too. ;-)
>>
>> Andre, do yourself a favor and order the low profile xtals. Apparently
>> mouser no longer stocks these in the 12.096 MHz but they are
>> soooooooooooooomuch better than the standard height components and really
>> can't snag on anything and snap off.
>>
>> Picture below (not sure if it will come through on the list).
>>
>>
>> <abl.jpg>
>>
>>
>>
>
>
> André Huijts
> andre.huijts@upcmail.nl
>
>
>
>
>

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Received on Fri Feb 22 22:42:33 2013