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48G Destructive Teardown - EEVblog
05-23-2017, 02:34 AM
Post: #6
RE: 48G Destructive Teardown - EEVblog
(05-23-2017 01:52 AM)Han Wrote:  The other oddity about that calculator was the jumper between ROM and RAM chip. The calculator presumably got upgraded to 128KB, but such an upgrade never required anything more than a RAM chip replacement.

That jumper is on one of the address lines which would suggest a broken land on the board probably from removal of the original chip, but I think a shorter wire could have been used.

Paul.
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RE: 48G Destructive Teardown - EEVblog - Paul Berger (Canada) - 05-23-2017 02:34 AM



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