The key may be the difference in the reset circuitry in the XL and in the XE. In the XL the reset pulse is active as long, as you keep the Reset button pressed (it has some debouncing, but is prone to produce a pack of spikes on the reset line). In the XE pressing a Reset button, produces a single reset pulse of a constant duration (no matter how long you press the Reset button).
Ostatnio edytowany przez _tzok_ (2020-12-29 16:23:41)
Moja kolekcja: Atari 1040STe (4MB), Atari 1040STfm (4MB, BLiTTER, AT-ONCE+), Atari 800XE (SIMM EXP 1MB), Atari 800XL (RAMBO XL 256kB), Atari 600XL (64kB), Sinclair ZX SPECTRUM+ (48kB), TIMEX Computer 2048 (48kB), Commodore A600 (2MB+4MB, HDD CF 4GB), Commodore C64C.