68kMLA Classic Interface
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| Click here to select a new forum. | | Reproducing the Lisa 2 Card Stack: The 512K RAM Card | Posted by: warmech on 2022-08-01 15:34:30
Pin 1 of U5, U6, and U7 are tied to ground. The Via on the J jumper also goes to ground. (on my populated board anyway)
Well hot diggety - that solves that mystery! Thanks again, so so much, for checking that! With that out of the way, I have a few final checks and then I think this thing is safe to call done. | Posted by: aihk on 2025-04-03 02:23:17
@warmech Hello sir, I found out that there is a fault in my RAM board. I insert the memory module in the singular number starting from the right, and the slot will beep wrongly. If you plug it into the double-numbered slot starting from the right, there will be a beep twice, indicating that there is no RAM. I only used one RAM for the test, could I ask if this is a failure of the RAM board or a failure caused by another board? English is not my native language, I use machine translation, please forgive me. | | < 2 |
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