From: groepaz (groepaz_at_gmx.net)
Date: 2002-02-05 15:47:09
Hello Mark, Tuesday, February 05, 2002, 3:38:37 PM, you wrote: KM> Hi, >> Yes, but on the C64, you'd probably use such >> cartridges as "ROM disks", to port a floppy-based >> game to cartridge. Typically, 8 or 16 kilobytes >> would be mapped in the address space at a time. KM> Same with the Atari, typically a fixed block KM> between $A000 and $BFFF (8K) and then switch KM> in block by bank # into $8000 -> $9FFF. KM> What you do with the bank, ie. copy it to RAM KM> I supposed does make it a kinda ROM disk. KM> The NES models were far more flexible, e.g. fixed 16K at $C000->>$FFFF and then switch blocks into $8000->>$BFFF, and that's just for code! wow that config looks alot like the gameboy :o) on the c64 you may map 8k rom each to 3 different locations in the memory map.... that is $8000-$9fff, $a000->$bfff, $e000-$efff ...additionaly there is ram in the entire $0000-$ffff space -- Best regards, groepaz mailto:groepaz_at_gmx.net ---------------------------------------------------------------------- To unsubscribe from the list send mail to majordomo_at_musoftware.de with the string "unsubscribe cc65" in the body(!) of the mail.
This archive was generated by hypermail 2.1.3 : 2002-02-05 15:47:28 CET