[Coco] 4 Port MPI PCB artwork (so far)

[Al Hartman]

Why not use the Wordpak that Luis cloned as a basis for your video 
alternative. There are already NitrOS9 drivers and it is a proven design.

-[ Al -]

-----Original Message----- 
From: Bill Nobel

Question,, for a newbie to advanced hardware. I have done peripheral stuff, 
(printers, rs232, etc…) and want to go further. I have ordered the parts to 
Grant’s 6 chip comp.  I want to take it to the extent that Kip has and more 
compatibility, and more advanced. The level of Coco2 with no 6847 to start 
with. (need to ad at least the 68B21 that handle cass./joy). That will open 
the door to Drivewire and the most part of Nitros9 Level 1.

  From that point I have come across some MMU circuits that I want to look 
into. Not compatible with current Coco3, but can be better (once video 
alternative gets resolved)

I need to bug Kip on to letting the schematic on his version of 58K ram be 
public (to enlighten me for ram workings vs rom).

Bill Nobel