Cheetah Cub board

From: Doc Shipley <doc_at_mdrconsult.com>
Date: Wed Jun 9 22:19:46 2004

Ethan Dicks wrote:

> On Wed, Jun 09, 2004 at 12:28:27PM -0500, Doc Shipley wrote:
>
>> So, more relevant to me, is the board itself worth anything outside
>>the DRAMs? I have a friend doing a 68000 SBC project who could use
>>some, and I think some of the rest would look fabulous on my Amiga
>>2000's A2091 board.
>
>
> So those DRAMS are 44256s? That's what the A2091 takes, 256Kx4.

   I figure you've read the thread by now, but here's the recap:

   The Cheetah board is 256Kx1 16-pin DIPs. The A2091 needs 20-pin
256Kx4 chips.

   I looked in my junk box and found a couple of PS/2 graphics boards
with the ROMs missing and one burnt up. Each had 8 TI TMS44C256-12N
DIPs, which are now running nicely on the A2091. As soon as I finish
cooking and eating dinner, I'm gonna see if it juked up the abysmal disk
   I/O a little.

   The whole list ganged up to teach me some memory basics. :)


        Doc

>
> Speed is not a problem - 150ns is fast enough, but ISTR 120ns was
> more commonly available by the time 1Mbit chips were ordinary, and
> I think they were available as fast as 80ns in DIP packages.
>
> -ethan
>
Received on Wed Jun 09 2004 - 22:19:46 BST