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Author Topic: amiga 4000 simm slots only addressing 1 meg per slot  (Read 7509 times)

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Offline Zac67

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Re: amiga 4000 simm slots only addressing 1 meg per slot
« on: August 23, 2011, 08:26:57 PM »
Possibly MA9 bad? Check continuity from PS/2 pin 9 to Ramsey pin 83 or possible short to GND or Vcc. Make sure pin 12 is high for 4 MB banks.
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Offline Zac67

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Re: amiga 4000 simm slots only addressing 1 meg per slot
« Reply #1 on: January 15, 2013, 10:25:57 PM »
You mean J213 & 214, the "free sex and beer" jumpers actually did something?
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