Hello to all,
I'm trying to upgrade my Zip GSX v1.02 card with 64 Ko cache.
It is running at 10 Mhz with a 65C816-10. I'm using brand new SRAM UM61256K-15 and UM61256FK-15.
When 64 Ko is configured, the card crash within a minute under GS/OS 6.01. Sometimes, I can't even get it to load.
Without removing SRAM, if I get back to 32 Ko cache (only 2 chips are used), the card is working great.
As the FAQ suggested, I've also tried to mix fast and slow SRAM (thin package UMxxxx-15 for TAG and large package CXK58255P-45 for DATA). Same behavior : works okay at 32 Ko
and crash at 64
According to the FAQ, 15ns SRAM should be enough for that speed.
Has anyone succeeded to upgrade a Zip GXS to 64 Ko cache ?
If so, what is the SRAM reference ?
Thanks a lot.