According to http://codebase64.org/doku.php?id=base:ram_beneath_00_and_01 The 6510 doesn't drive the data bus when writing to $00 or $01, so you get what was last read by vic 2 There is a test program which verifies this https://sourceforge.net/p/vice-emu/code/HEAD/tree/testprogs/general/ram0001/ On 25/02/2018 10:17, Segher Boessenkool wrote: > All 6510 accesses to 0000/0001 are done on the external bus (the read > result just never is used). > Message was sent through the cbm-hackers mailing listReceived on 2018-02-25 14:00:03
Archive generated by hypermail 2.2.0.