; DIAGNOSE is the software equivalent of opening
; up the case on your MD-3 and plugging a shorting
; jumper across JP4 (Rev. 2 Kohjinsha) or E5 (Rev.
; 2 Korean motherboard).  Assumes ROM 3.1.
;
	ASEG
BOOT	EQU	0		;COLD BOOT
DIAGADR	EQU	004EH		;DIAGNOSTICS ADDRESS
ROMCTL	EQU	0F6H		;OUT=ROM, IN=RAM
RAM	EQU	2000H		;SAFELY BEYOND ROM
;
	ORG	100H
BEGIN:	LXI	H,PROGRAM	;HL > PROGRAM
	LXI	D,RAM		;DE > RAM
	LXI	B,LENGTH	;BC = BYTE COUNT
	DB	0EDH,0B0H	;Z-80 LDIR BLOCK MOVE
	JMP	RAM		;NOW GO EXECUTE IT
;
PROGRAM:OUT	ROMCTL		;TURN ON THE ROM
	LXI	H,BOOT		;COLD BOOT RETURN ADDRESS
	PUSH	H		;ON THE STACK
	LHLD	DIAGADR		;GET ADDRESS OF DIAGNOSTICS
	PCHL			;GO TO IT
FINISH	EQU	$
LENGTH	EQU	FINISH-PROGRAM	;LENGTH OF PROGRAM
END	BEGIN
IAGADR		;GET