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Sharp PC-1261 with faulty RAM
09-25-2023, 06:08 PM
Post: #2
RE: Sharp PC-1261 with faulty RAM
(09-25-2023 05:14 PM)robve Wrote:  The RAM chip is marked:
4K1
SC613256
G77

This is not the RAM chip, this is the ROM. The RAM is composed of 5 chips integrated in the Chip On Substrate (COS) black package on the top of the board:

[Image: file.php?id=5454]


The schematic is visible here.

Reference: http://www.silicium.org/forum/viewtopic....46&t=48635
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Messages In This Thread
Sharp PC-1261 with faulty RAM - robve - 09-25-2023, 05:14 PM
RE: Sharp PC-1261 with faulty RAM - Didier Lachieze - 09-25-2023 06:08 PM
RE: Sharp PC-1261 with faulty RAM - robve - 09-25-2023, 08:04 PM



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