On 8/28/2010 3:46 AM, sicklittlemonkey wrote:
For someone who has one, or maybe knows off-hand ... When putting data on D0 does the NSC allow the attached ROM to output on D7-D1, or does it disable the ROM and leave these lines low?
I think it deselects the ROM, leaving D1-D7 tristated--it doesn't even connect to any data pins except D0. -michael NadaNet 3.1 for Apple II parallel computing! Home page: http://home.comcast.net/~mjmahon/ "The wastebasket is our most important design tool--and it's seriously underused."