PZ wrote:
The problem is that both Tony and I are very hardware oriented, I even more so than Tony. What needs to be done here is for someone compare the v1.5 "8k" ROM to the v1.7 & v1.8 ROMs inorder to see what and where the changes are. All three should be compared to weed out "other" changes in the ROM code. I don't know of the existence of a v1.4 and I'm pretty sure that v1.6 never existed.
Very likely the difference is in the tag initialization code. Once the cache is initialized, I wouldn't expect firmware to play any further role. -michael New, faster SUDOKU v2.0 solver for Apple II's! Home page: http://members.aol.com/MJMahon/ "The wastebasket is our most important design tool--and it's seriously underused."