Page 18 would be for the AVG board, which should be helpful also.
I wired up a 6809E chip like this
http://games.rossiters.com/manuals/6809E-NOP.jpg and put it into a socket.
Ground the WDDIS test point. If it's setup right, your +5 line should read
0003 and the address lines should look something like below. I've
documented the address decoder stuff and the rom and data lines. I would
like to figure out how to do the mathbox.
1C-7 +5V 0003
1C-3 AB0 UUUU
1C-14 AB1 FFFF
1C-16 A1B 8484
1C-18 AB3 P763
1C-12 AB4 1U5P
1C-5 AB5 0356
1C-7 AB6 U759
1C-9 AB7 6F9A
1B-3 AB8 7791
1B-5 AB9 6321
1B-7 AB10 37C5
1B-16 AB11 6U28
1B-18 AB12 4FCA
2C-21 A13 4868
2C-22 A14 9UP1
2C-23 A15 0001
On Fri, 10 Oct 2008 16:38:15 +0100, "martin@guddler.co.uk"
<martin@guddler.co.uk> wrote:
> I've not actually done it, but doesn't page 18 of the troubleshooting
> guide give you the information on how to put the board in a state for
> signature analysis?
>
> On 9 Oct 2008, at 19:52, John Robertson wrote:
>
>> Checking my files, I find that the "Supplement to STARWARS"
>> #CO-225-02 (1st Printing) has the last two pages on Signature
>> updates. The schematics do not exactly show how to get INTO the
>> Signature state, but I suspect if one reviews Tempest and others
>> that one can be successful. I have not had to service a SW in years
>> and did not need signature analysis at the either, so that is the
>> limit to my knowledge on the matter, but the schematics set and
>> CO-225-02 should help!
>>
>> Atari was expecting you to use the CAT BOX to run these tests...
>>
>> John :-#)#
>
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Received on Fri Oct 10 12:56:36 2008
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