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Old 18 March 2011, 07:46   #5
rkauer
I hate potatos and shirts
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Join Date: Oct 2007
Location: Sao Leopoldo / Brazil
Age: 53
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A dead TTL chip* on the trapdoor expansion is the most common culprit on this matter.

Burned memory chips will not let the Amiga boot at all, or the Amiga will crash as soon as the memory get used.

*TTL chips all start with 74, then one or two or three letters (or not), then more two or three digits. Examples:
7400
74LS08
74F244
74245
74ALS84
etc

Also existed the "military spec" TTL family, but those where never used on Amiga boards. The initial number code is 54 instead of 74.


BTW: there is not a jumper or switch on this board? Those are there to enable/disable the board. Switch it on or put a jumper and check again.

Last edited by rkauer; 18 March 2011 at 07:48. Reason: voices in my head told me so
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