X-Git-Url: http://git.joshuawise.com/fpgaboy.git/blobdiff_plain/0dea04d38b6864e9734f5a0e556cc088887835bd..4fd47c85d2419ac8fa788696f7fda03cf3ce8124:/diag.asm

diff --git a/diag.asm b/diag.asm
index 77c5202..e9a9f19 100644
--- a/diag.asm
+++ b/diag.asm
@@ -51,22 +51,40 @@ signon:
 	db $0D,$0A,$1B,"[1mFPGABoy Diagnostic ROM",$1B,"[0m",$0D,$0A,0
 
 tiles:
-	db %11111111
-	db %11111111
-	db %11000011
-	db %11000011
-	db %11000011
-	db %11000011
-	db %11111111
-	db %11111111
-	
-	db %00000000
-	db %00000000
-	db %00000000
-	db %00000000
+	db %01111100
+	db %11000110
+	db %11000110
+	db %11111110
+	db %11000110
+	db %11000110
+	db %11000110
 	db %00000000
+	
+	db %11111100
+	db %11000110
+	db %11000110
+	db %11111100
+	db %11000110
+	db %11000110
+	db %11111100
 	db %00000000
+
+	db %01111100
+	db %11000110
+	db %11000010
+	db %11000000
+	db %11000010
+	db %11000110
+	db %01111100
 	db %00000000
+
+	db %11111100
+	db %11000110
+	db %11000110
+	db %11000110
+	db %11000110
+	db %11000110
+	db %11111100
 	db %00000000
 
 putscreen:
@@ -75,13 +93,9 @@ putscreen:
 
 	ld hl, $8000	; Copy two tiles.
 	ld de, tiles
-	ld c, $10
-.cloop:	push hl
-	ld h, d
-	ld l, e
-	ld a, [hl]
+	ld c, $20
+.cloop:	ld a, [de]
 	inc de
-	pop hl
 	ld [hli], a
 	ld [hli], a
 	dec c
@@ -93,9 +107,9 @@ putscreen:
 .vloop:	call .vblwait
 	ld c, $40
 	ld b, 0
-.loop:	inc b
-	ld a, b
-	and $01
+.loop:	ld a, b
+	inc b
+	and $03
 	ld [hli], a
 	ld a, h
 	cp $9C