Cheetah Cub board

From: Bill Sudbrink <wh.sudbrink_at_verizon.net>
Date: Wed Jun 9 14:55:49 2004

>> hmmm, I thought there were four rows of 18 chips.
>> That sounds like 8 banks of 256K which seems
>> like 2meg to me... unless I got something wrong
>
> No, I guess I got it wrong. I thought you meant 256K
> per chip, or 4MB per bank (16 * 256K plus 2 * 256K for parity).
>
> So are these 256K per bank, or 256K per chip?

The _chips_ are 256K by 1 bit. You feed an 18 bit address into
one chip and you get one data bit out. 9 chips form a bank with
8 data bits plus a parity bit.
Received on Wed Jun 09 2004 - 14:55:49 BST