One of my NEC 8201s is having a memory issue. I just replaced the main ROM with a Y2K chip and SARDOS option ROM. After installing, I cannot go to Bank 2. There is a full 64k in the machine. I put the original chips back in and I get the same results. I have another 64k worth of extra memory so I swapped out the 4 8k chips with new ones and I get the same results. I should note that when I got the machine I had the same problem but I was able to re-seat one of the 8k chips and got it working again. Any ideas on how to get my second bank of memory back?
Kurt
