C64 8K autostart ROM cart schematic?

C64 8K autostart ROM cart schematic?

From: Jim Brain <brain_at_jbrain.com>
Date: Mon, 23 Mar 2009 03:36:10 -0500
Message-ID: <49C749FA.9060502@jbrain.com>
Does anyone have a link to an autostart C64 ROM cart schematic?  I'm 
adding logic for one to a cart, and I want to make sure I did it right.  
Questions include:

/CE and /OE?  Cna I just tie /OE to GND and tie /CE to /ROML?  OR, do I 
need to tie them both to /ROML?

I want to verify it is /EXROM that I pull low to engage the cartridge in 
the memory map.

I've looked on zimmers, but the only thing I found was the diag cart and 
the magic voice carts.  One tied both to /ROML, while the other tied one 
to ground.


Jim Brain, Brain Innovations                                      (X)
Dabbling in WWW, Embedded Systems, Old CBM computers, and Good Times! 
Home: http://www.jbrain.com

       Message was sent through the cbm-hackers mailing list
Received on 2009-03-23 10:34:28

Archive generated by hypermail 2.2.0.