diff --git a/ethernet/Makefile b/ethernet/Makefile
index 81ea0bc6..16f9a796 100644
--- a/ethernet/Makefile
+++ b/ethernet/Makefile
@@ -2,7 +2,10 @@ DOS33 = ../dos33fs-utils/dos33
 TXT2BAS = ../asoft_basic-utils/tokenize_asoft
 MAKEB = ../dos33fs-utils/make_b
 
-all:	ethernet.dsk
+all:	ethernet.dsk memcpy.o
+
+memcpy.o:	memcpy.s
+	ca65 -o memcpy.o memcpy.s -l memcpy.lst
 
 SETUP.BAS:	setup.bas
 	$(TXT2BAS) < setup.bas > SETUP.BAS
@@ -26,4 +29,4 @@ ethernet.dsk:	SETUP.BAS \
 	$(DOS33) -y ethernet.dsk BSAVE -a 0x4000 ./c/vmw_logo.png
 
 clean:	
-	rm -f *~ *.BAS R.TXT
+	rm -f *~ *.BAS R.TXT *.o *.lst
diff --git a/ethernet/memcpy.s b/ethernet/memcpy.s
new file mode 100644
index 00000000..03990e76
--- /dev/null
+++ b/ethernet/memcpy.s
@@ -0,0 +1,20 @@
+.define EQU =
+
+PTR	EQU	$06
+
+	lda	#0
+	sta	PTR
+	lda	#$40
+	sta	PTR+1
+
+	ldx	#8
+	ldy	#0
+copy_loop:
+	lda	(PTR),y
+	sta	$5000
+	iny
+	bne	copy_loop
+	dex
+	bne	copy_loop
+
+	rts
diff --git a/ethernet/memcpy.txt b/ethernet/memcpy.txt
new file mode 100644
index 00000000..27cff51b
--- /dev/null
+++ b/ethernet/memcpy.txt
@@ -0,0 +1,46 @@
+Test 1:
+	5 FOR J=1 to 1000: NEXT J
+	10 PRINT CHR$(7)
+	20 FOR I=16384 to 20479
+	30 POKE 20480,PEEK(I)
+	40 NEXT I
+	100 PRINT CHR$(7)
+
+	Time (linapple2) 38s
+
+All one one line
+
+	5 FOR J=1 to 1000: NEXT J
+	10 PRINT CHR$(7)
+	20 FOR I=16384 to 20479
+	30 POKE 20480,PEEK(I)
+	40 NEXT I
+	100 PRINT CHR$(7)
+	
+	Time (linapple2) 37s
+
+Assembly language:
+
+	PTR     EQU     $06
+
+        lda     #0
+        sta     PTR
+        lda     #$40
+        sta     PTR+1
+
+        ldx     #8
+        ldy     #0
+copy_loop:
+        lda     (PTR),y
+        sta     $5000
+        iny
+        bne     copy_loop
+        dex
+        bne     copy_loop
+
+        rts
+
+Runs more or less instantaenously
+
+	
+