Files
open-roms/c64/kernal/second.s
T

9 lines
339 B
ArmAsm

; Function defined on pp272-273 of C64 Programmers Reference Guide
second:
;; This trivial routine is documented in 'C64 Programmer's Reference Guide', page 296 and
;; https://www.pagetable.com/?p=1031, , https://github.com/mist64/cbmbus_doc
and #$1F ; make sure bits encoding the command are cleared out
ora #$60
jmp iec_tx_command