From 5e76aeebfe2c3f0d442d3d03dbba92b5f2d38776 Mon Sep 17 00:00:00 2001
From: Rekai Musuka <rekai@musuka.dev>
Date: Fri, 9 Sep 2022 10:27:17 -0300
Subject: [PATCH] chore: update README.md

---
 README.md | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 511d057..35b3d0d 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,20 @@
-# Almost-Empty Demo Collection
+# An Almost-empty GBA Test Collection
 
 ### `2d_sprites.gba`
-`grit` command: `grit sprite.bmp -ftc -pu32 -pn16 -gB4`
\ No newline at end of file
+At some point during my initial PPU Implementation, I had problems with 
+2D-mapped vertical sprites. This is a ROM based on TONC's `sprite_demo.gba` That displays every kind of 2D-mapped sprite. 
+
+This ROM will display:
+* 4BPP 
+    * Square: 8x8, 16x16, 32x32, 64x64
+    * Horizontal: 16x8, 32x8, 32x16, 64x32
+    * Vertical: 8x16, 8x32, 16x32, 32x64
+* 8BPP
+    * Square: 8x8, 16x16, 32x32, 64x64
+    * Horizontal: 16x8, 32x8, 32x16, 64x32
+    * Vertical: 8x16, 8x32, 16x32, 32x64
+
+Keep in mind that all displayed sprites are 2D-mapped. 
+
+TODO: Do the same but for 1D mapped sprites. 
+TODO: Figure out how to communicate current configurations to the user.