;; ;; Official Kernal routine, described in: ;; ;; - [RG64] C64 Programmer's Reference Guide - page 304 ;; - [CM64] Compute's Mapping the Commodore 64 - page 224 ;; ;; CPU registers that has to be preserved (see [RG64]): .X, .Y ;; ;; XXX currently does not preserve registers, to be fixed! ;; XXX shouldn't this do a turnaround? untlk: ;; This trivial routine is documented in 'Compute's Mapping the Commodore 64', page 224 lda #$5F jmp iec_tx_command