; NAME: mpu.asm
			
			; Edited for ADX65

			; This program tests the MPU, EPROM, and DISPLAY 

			; The program loops while putting a number out to DISPLAY

			; The DISPLAY counts up in hexadecimal

			;

	org $e000	; NOTE we use $e000 as the base address of the 27C64

			; DON'T FORGET TO USE E000 AS THE BASE ADDRESS ON THE EMP-20

			;

init	sei		; turn off interupts

	cld		; set CPU to the binary mode

	ldx #$ff	;

	txs		; load the stack pointer with $ff

	lda #$00	; set accumulator to 0

			;

loop	sta $4000	; send accumulator to TIL display

			;

delay	inx		; kill time (0.25 second)

	bne delay

	iny

	bne delay

			;

	clc

	adc #$01	; add 1 to the accumulator

			;

	jmp loop	; repeat

			;

	org $fffc	; restart vector

	dw init

	end