Hi Steve,

Like this?

10 - diagnostic bit. Enables $D800-$DFFF in ROM at $5800-$5FFF in RAM.
11 - Basic toggle
12 & 13 - XE ramdisk select bits
14 - CPU bank select
15 - ANTIC bank select
16 - n/a
17 - OS disable. Turns on RAM under the OS.

Bob



-----Original Message-----
From: Stephen J. Carden [mailto:sjcarden@bellsouth.net] 
Sent: Tuesday, December 13, 2005 6:31 PM
To: REWoolley
Subject: RE: Atari Sio connectors

Hay Bob,
  I have a question for you.  What
 does each of the pin's off
 the pia do?    I can't find my cheat sheet.
 
 
 pin 10
 pin 11	; I know this is the basic pin.
 pin 12
 pin 13
 pin 14	; going on memory here..  antic mode
 pin 15
 pin 16
 pin 17
 
 
 
 Take care,  Steve
 
