trevor-makes / avr-dram-tester Goto Github PK

PLEASE support this MB81C4256A-70P type RAM ICs in this or a separate project.
It could be a separate project because no of pins are different.

These are mainly used for CGA/VGA ISA Display Cards as VRAM.
There is no tester in the market to test them except those expensive multi-IC testers.

PLEASE. NO HURRY.

PLEASE PLEASE add support for 41256.
My personal restoration work is pending due to a proper DRAM tester.

PLEASE.

I was testing all my 54 ICs (KM41256AP-12), 10 found to be dead/bad.
I tested each ICs 3 times.

But, there I ONE strange DRAM IC.
Every time, I test this IC, it gives me a random result! sometimes Green, sometimes Red.

Last night, I kept the test running for 30 mins, GREEN.
Today morning, when I turn it on, RED!
When I re-test, GREEN again!