![R.I.P memory expansion card. [4032x1908 - 1MB]](https://pic8.co/sh/imMGdc.jpg){kind=link}
Are they those damned TI or MOS memory chips?
Are they those damned TI or MOS memory chips?
Goldstar (pic8.co), usually really reliable. I have had the card since 1992 however. Need to probe around with an oscilloscope and see what is going on. The high address sector that maps to chip ram is fine but when the lower sector of 1.5 megs does a fill test it errors out.
[Goldstar](https://pic8.co/sh/wW3s71.jpg), usually really reliable. I have had the card since 1992 however. Need to probe around with an oscilloscope and see what is going on. The high address sector that maps to chip ram is fine but when the lower sector of 1.5 megs does a fill test it errors out.
Nice RTC too!
Nice RTC too!
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