Re: sources of 6529

From: Gerrit Heitsch <*gerrit_at_laosinh.s.bawue.de*> Date: Sun, 17 Jun 2012 18:00:54 +0200 Message-ID: <4FDDFF36.6010807@laosinh.s.bawue.de> · gerrit_at_laosinh.s.bawue.de

On 06/17/2012 05:47 PM, Rob Clarke wrote:
> I disassembled large chunks of the 264 kernal last year when I built my
> diagnostic tool, and I'm pretty confident the kernal doesn't read it,
> but I do, simply to check it's operation. :-)

Your software doesn't count when it comes to replacing the 6529 with a 
TTL. :)

> I've also had a couple of dead ones, but that's out of 20 boards or so
> and one of them I blew up myself.

The dead ones on the user port of the keyboard port? My idea is for the 
keyboard port only, the user port needs R/W capability. That will need 
at least 3 TTLs (74LS574 + 74LS244 + 74LS139 or so) plus some OC drivers.

  Gerrit

       Message was sent through the cbm-hackers mailing list