; Resources describing the C64 reset sequence: ; https://www.c64-wiki.com/wiki/Reset_(Process) reset_entry: ; The GPL program at https://github.com/Klaus2m5/6502_65C02_functional_tests/blob/master/6502_functional_test.a65 ; uses the following initial reset sequence cld ldx #$ff txs sei ; The following routine is based on reading the public KERNAL jumptable routine ; list, and making unimaginative assumptions about what should be done on reset. ; Initialising IO is obviously required. jsr ioinit ; Setting up the screen is obviously required jsr ramtas ; Resetting IO vectors is obviously required, if we want interrupts to run jsr restor ; What do we do when finished? A C64 jumps into the BASIC ROM jmp ($a000)