//
// Official Kernal routine, described in:
//
// - [RG64] C64 Programmer's Reference Guide   - page 298
// - [CM64] Compute's Mapping the Commodore 64 - page 239
//
// CPU registers that has to be preserved (see [RG64]): .A, .X, .Y
//

SETMSG:
	sta MSGFLG
	rts