// #LAYOUT# STD *        #TAKE
// #LAYOUT# *   KERNAL_0 #TAKE
// #LAYOUT# *   *        #IGNORE

//
// Official Kernal routine, described in:
//
// - [RG64] C64 Programmers Reference Guide   - page 283
// - [CM64] Computes Mapping the Commodore 64 - page 227/228
//
// CPU registers that has to be preserved (see [RG64]): for RS-232: .X, .Y
//


getin_real:

	// Determine the device number
	lda DFLTN

	// Try $00 - keyboard
	beq_16 getin_keyboard

#if HAS_RS232

	// Try $02 - RS-232
	cmp #$02
	beq_16 getin_rs232

#endif // HAS_RS232

	jmp chrin_getin