Posted on May 17, 2011 at 12:00Yes, with PSDsoft on the 80 pin version of the 3254 you can bring out the extra address signals, A12~A15, on the GPIO on port B (A0~A11 are dedicated). To get an extra bit for addressing (A16), you can use one of the page register bits.
Your software will write an appropriate value to the page register that determines if your address line, A16 (page register bit you specified in PSDsoft), is high or low becoming part of your 17 address signals.
