From dfedb739b92f906cd6c44b76c19bc6b117c710b9 Mon Sep 17 00:00:00 2001
From: Daniel Borges <msk@lywenn.eu.org>
Date: Fri, 4 Jan 2019 00:15:00 +0100
Subject: [PATCH] scroll out nintendo logo

---
 Code/main.asm         |   6 +++---
 Code/nintendo-out.asm |  26 ++++++++++++++++++++++++++
 build.bat             |  13 +++++++------
 rom.gb                | Bin 32768 -> 32768 bytes
 4 files changed, 36 insertions(+), 9 deletions(-)
 create mode 100644 Code/nintendo-out.asm

diff --git a/Code/main.asm b/Code/main.asm
index 4f38de2..e16a0c2 100644
--- a/Code/main.asm
+++ b/Code/main.asm
@@ -23,11 +23,11 @@ Start:
 
 	xor a
 	ldh [rIF], a
-	
-	; wait for v-blank
-	halt 
+
+	call ScrollNintendoOut
 	
 	; disable screen
+	halt
 	xor a
 	ld [rLCDC], a
 
diff --git a/Code/nintendo-out.asm b/Code/nintendo-out.asm
new file mode 100644
index 0000000..b2303bb
--- /dev/null
+++ b/Code/nintendo-out.asm
@@ -0,0 +1,26 @@
+INCLUDE "hardware.inc"
+
+SECTION "NintendoLogo", ROM0
+
+EXPORT ScrollNintendoOut
+SECTION "Scroll Nintendo Out", ROM0
+ScrollNintendoOut:
+	ld b, 30
+.wait
+	halt
+	xor a
+	ld [rIF], a
+	dec b
+	jr nz, .wait
+
+.scrollup
+	halt
+	xor a
+	ld [rIF], a
+	ldh a, [rSCY]
+	inc a
+	ldh [rSCY], a
+	cp a, 88
+	jp nz, .scrollup
+	
+	ret
\ No newline at end of file
diff --git a/build.bat b/build.bat
index f965f40..325b424 100644
--- a/build.bat
+++ b/build.bat
@@ -1,7 +1,8 @@
-..\..\Assembler\rgbasm -i ..\..\Include\ -i Graphics\ -i Code\ -o Build\main.o     Code\main.asm
-..\..\Assembler\rgbasm -i ..\..\Include\ -i Graphics\ -i Code\ -o Build\data.o     Code\data.asm
-..\..\Assembler\rgbasm -i ..\..\Include\ -i Graphics\ -i Code\ -o Build\automata.o Code\automata.asm
-..\..\Assembler\rgbasm -i ..\..\Include\ -i Graphics\ -i Code\ -o Build\render.o   Code\render.asm
-..\..\Assembler\rgbasm -i ..\..\Include\ -i Graphics\ -i Code\ -o Build\utils.o    Code\utils.asm
-..\..\Assembler\rgblink -n rom.sym -w -t -o rom.gb -d Build/main.o Build/data.o Build/automata.o Build/render.o Build/utils.o
+..\..\Assembler\rgbasm -i ..\..\Include\ -i Graphics\ -i Code\ -o Build\main.o         Code\main.asm
+..\..\Assembler\rgbasm -i ..\..\Include\ -i Graphics\ -i Code\ -o Build\data.o         Code\data.asm
+..\..\Assembler\rgbasm -i ..\..\Include\ -i Graphics\ -i Code\ -o Build\automata.o     Code\automata.asm
+..\..\Assembler\rgbasm -i ..\..\Include\ -i Graphics\ -i Code\ -o Build\render.o       Code\render.asm
+..\..\Assembler\rgbasm -i ..\..\Include\ -i Graphics\ -i Code\ -o Build\utils.o        Code\utils.asm
+..\..\Assembler\rgbasm -i ..\..\Include\ -i Graphics\ -i Code\ -o Build\nintendo-out.o Code\nintendo-out.asm
+..\..\Assembler\rgblink -n rom.sym -w -t -o rom.gb -d Build/main.o Build/data.o Build/automata.o Build/render.o Build/utils.o Build/nintendo-out.o
 ..\..\Assembler\rgbfix -t "Game of Life" -v -p 0 rom.gb
\ No newline at end of file
diff --git a/rom.gb b/rom.gb
index 40b908d4c29efcfa53bbb78a6e735d68c1283661..cea432a74a869d206baf57c9afc7f4a0af1cd0c2 100644
GIT binary patch
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