CA4003290 revision year 89 week 46 - STE

STE motherboards
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ATARI FAN
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Joined: Sat Sep 30, 2017 8:54 pm

CA4003290 revision year 89 week 46 - STE

Post by ATARI FAN » Sun Jan 14, 2018 9:38 pm

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This is an atari bought from a school in Norway
it has defective dma circuit C025913-38.
I have had 3 atari ste bought in Norway all
with defective dma circuit C025913-38.

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Maeke
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Re: CA4003290 revision year 89 week 46 - STE

Post by Maeke » Sun Jan 14, 2018 10:39 pm

The -38 is often thought to be defectice from factory, but exxos's research proved it wasn't, and in fact it's the same dma that was in the stf(m) on which it worked perfectly, http://www.exxoshost.co.uk/atari/last/DMAfix/index.htm
So the question is did you test them and what bug did you find?
If i take too long to reply, sorry my cat is sleeping on my laps.

ATARI FAN
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Re: CA4003290 revision year 89 week 46 - STE

Post by ATARI FAN » Sun Jan 14, 2018 10:50 pm

I have shopped MC68HC000 CPU 8 - 32MHz from exxos shop to night and
will test it when i get it in mail.
I bougth an spare atari ste from atarifreakz in 2010 with fine dma.
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:)

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exxos
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Re: CA4003290 revision year 89 week 46 - STE

Post by exxos » Sun Jan 14, 2018 10:52 pm

Let me how it all goes... try the DMA test program also...

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ATARI FAN
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Joined: Sat Sep 30, 2017 8:54 pm

Re: CA4003290 revision year 89 week 46 - STE

Post by ATARI FAN » Mon Jan 15, 2018 1:10 pm

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What is the reason for the green cable
between lmc 1992 and lm 347
:?:

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