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diff --git a/beginners/m128_tests.asm b/beginners/m128_tests.asm
new file mode 100644
index 0000000..413fa87
--- /dev/null
+++ b/beginners/m128_tests.asm
@@ -0,0 +1,184 @@
+.include "../include/m128def.inc"
+
+; interrupt vectors
+
+jmp RESET
+
+reti
+nop
+
+reti
+nop
+
+reti
+nop
+
+reti
+nop
+
+jmp _INT4
+
+jmp _INT5
+
+jmp _INT6
+
+jmp _INT7
+
+reti
+nop
+
+reti
+nop
+
+reti
+nop
+
+reti
+nop
+
+reti
+nop
+
+reti
+nop
+
+reti
+nop
+
+reti
+nop
+
+reti
+nop
+
+reti
+nop
+
+reti
+nop
+
+reti
+nop
+
+reti
+nop
+
+reti
+nop
+
+reti
+nop
+
+reti
+nop
+
+reti
+nop
+
+reti
+nop
+
+reti
+nop
+
+reti
+nop
+
+reti
+nop
+
+reti
+nop
+
+reti
+nop
+
+reti
+nop
+
+reti
+nop
+
+reti
+nop
+
+RESET:
+
+	; init
+
+	; set stackpointer
+	ldi r17,high(RAMEND)
+	out SPH,r17
+	ldi r17,low(RAMEND)
+	out SPL,r17
+
+	; uart
+	ldi r17,(1<<TXEN0)
+	out UCSR0B,r17
+	ldi r17,(1<<UCSZ01|1<<UCSZ00)
+	sts UCSR0C,r17
+	ldi r17,0
+	sts UBRR0H,r17
+	ldi r17,25
+	out UBRR0L,r17
+
+	; switches
+	ldi r17,(1<<PE4)|(1<<PE5)|(1<<PE6)|(1<<PE7)
+	out PORTE,r17
+	ldi r17,(1<<ISC41)|(1<<ISC51)|(1<<ISC61)|(1<<ISC71)
+	out EICRB,r17
+	ldi r17,(1<<INT4)|(1<<INT5)|(1<<INT6)|(1<<INT7)
+	out EIMSK,r17
+
+	; misc
+	ldi r21,5
+	ldi r18,0x34
+
+	; enable interrupts
+	sei
+
+; loop
+
+MAIN:
+
+	UART_T:
+		sbis UCSR0A,UDRE0
+		rjmp UART_T
+
+	out UDR0,r18
+
+	rjmp MAIN
+
+_INT4:
+	inc r18
+	
+	ldi r23,0
+	WAIT_1:
+		ldi r24,0
+		WAIT_2:
+			ldi r25,0
+			WAIT_3:
+				inc r25
+				cpi r25,0xff
+				brne WAIT_3
+			inc r24
+			cpi r24,0xff
+			brne WAIT_2
+		inc r23
+		cpi r23,0xff
+		brne WAIT_1
+
+	reti
+
+_INT5:
+	dec r18
+	reti
+
+_INT6:
+	add r18,r21
+	reti
+
+_INT7:
+	subi r18,5
+	reti
+