David Empson wrote:
Michael J. Mahon <mjmahon@aol.com> wrote:Guillaume Tello wrote:Here it is: http://pagesperso-orange.fr/gtello/whatapple8.jpg But why are there four Roms places? One is clearly labelled F0-F8 Apple (Prodos) And I think the other one is BASIC 8K, but I might be wrong.I'd guess that the card is set up to accept ROMs of different sizes, so there are more places for ROMs. In the photo, one ROM is 4KB, replacing the F0 and F8 ROMs, and one ROM is 8KB, replacing the four (D0, D8, E0, E8) Applesoft ROMs.Minor detail: Applesoft is five ROMs: D0 through F0. The F8 ROM is the monitor and associated firmware such as lo-res graphics, text routines, etc.
Good point!
With Integer BASIC, the language itself occupies E0, E8 and part of F0, with the rest of F0 taken up with utilities such as the mini-assembler. D0 was the optional "Programmer's Aid #1". Apple didn't supply a D8 ROM but there must be something there in the INTBASIC file from DOS. I think there was a third-party ROM which was occasionally used in that position, but I didn't start using the Apple ][ until the ][+ was well established.
Inspector/Watson was often there... -michael NadaPong: Network game demo for Apple II computers! Home page: http://members.aol.com/MJMahon/ "The wastebasket is our most important design tool--and it's seriously underused."