fix fillmem, pics!

code/fillmem/fillmem.s

@@ -1,5 +1,5 @@
 .psx
-.create "fillmem.bin", 0x80010000
+.create "./build/fillmem.bin", 0x80010000
 
 ; Entry Point of Code
 .org 0x80010000

code/graphics_system/hellogpu_instructors.s

@@ -0,0 +1,78 @@
+.psx
+.create "./build/hellogpu_instructors.bin", 0x80010000
+
+.org 0x80010000
+
+; ---------------------
+; IO Port
+; ---------------------
+IO_BASE_ADDR equ 0x1F80      ; IO Ports Memory map base address
+
+; ---------------------
+; GPU Registers
+; ---------------------
+GP0 equ 0x1810               ; GP0 @ $1F801810: Rendering data & VRAM Access
+GP1 equ 0x1814               ; GP1 @ $1F801814: Display Control & Environment setup
+
+Main:
+  lui $t0, IO_BASE_ADDR      ; t0 = I/O Port Base Address (mapped at 0x1F80****)
+
+  ; ---------------------------------------------------------------------------
+  ; Send commands to GP1 (mapped at 0x1F801814)
+  ; These GP1 is for display control and environment setup
+  ; (Command = 8-Bit MSB, Parameter = 24-Bit LSB)
+  ; CCPPPPPP: CC=Command PPPPPP=Parameter
+  ; ---------------------------------------------------------------------------
+  li $t1, 0x00000000         ; 00 = Reset GPU
+  sw $t1, GP1($t0)           ; Write to GP1
+
+  li $t1, 0x03000000         ; 03 = Display enable
+  sw $t1, GP1($t0)           ; Write to GP1
+
+  li $t1, 0x08000001         ; 08 = Display mode (320x240, 15-bit, NTSC)
+  sw $t1, GP1($t0)           ; Write to GP1
+
+  li $t1, 0x06C60260         ; 06 = Horz Display Range - 0bxxxxxxxxxxXXXXXXXXXX (3168..608)
+  sw $t1, GP1($t0)           ; Write to GP1
+  
+  li $t1, 0x07042018         ; 07 = Vert Display Range - 0byyyyyyyyyyYYYYYYYYYY (264..24)
+  sw $t1, GP1($t0)           ; Write to GP1
+
+  ; ---------------------------------------------------------------------------
+  ; Send commands to GP0 (mapped at 0x1F801810)
+  ; These GP0 commands are to setup the drawing area
+  ; (Command = 8-Bit MSB, Parameter = 24-Bit LSB)
+  ; CCPPPPPP  CC=Command PPPPPP=Parameter
+  ; ---------------------------------------------------------------------------
+  li $t1, 0xE1000400         ; E1 = Draw Mode Settings
+  sw $t1, GP0($t0)			     ; Write to GP0
+
+  li $t1, 0xE3000000		     ; E3 = Drawing Area TopLeft - 0bYYYYYYYYYYXXXXXXXXXX (10 bits for Y and X)
+  sw $t1, GP0($t0)	         ; Write to GP0
+  
+  li $t1, 0xE403BD3F         ; E4 = Drawing area BottomRight - 0bYYYYYYYYYYXXXXXXXXXX (10 bits for X=319 and Y=239)
+  sw $t1, GP0($t0)           ; Write to GP0
+
+  li $t1, 0xE5000000         ; E5 = Drawing Offset - 0bYYYYYYYYYYYXXXXXXXXXXXX (X=0, Y=0)
+  sw $t1, GP0($t0)		       ; Write to GP0
+
+  ; ---------------------------------------------------------------------------
+  ; Clear the screen (draw a rectangle on VRAM).
+  ; ---------------------------------------------------------------------------
+  li $t1, 0x020000FF         ; 02 = Fill Rectancle in VRAM (Parameter Color: 0xBBGGRR)
+  sw $t1, GP0($t0)           ; Write GP0 Command
+  li $t1, 0x00000000         ; Fill Area, Parameter: 0xYYYYXXXX - Topleft (0,0)
+  sw $t1, GP0($t0)           ; Write to GP0
+  
+  li $t1, 0x00EF013F         ; Fill Area, 0xHHHHWWWW (Height=239, Width=319)
+  sw $t1, GP0($t0)           ; Write to GP0
+  
+  ; ---------------------------------------------------------------------------
+  ; TODO: Draw a flat-shaded triangle
+  ; ---------------------------------------------------------------------------
+
+LoopForever:
+  j LoopForever              ; Continuous loop
+  nop
+
+.close

readme.md

@@ -15,3 +15,9 @@ scoop install lua
 ```
 
 [pscx-redux](https://github.com/grumpycoders/pcsx-redux/): A collection of tools, research, hardware design, and libraries aiming at development and reverse engineering on the PlayStation 1.
+
+## Gallery
+
+![clear!](./docs/assets/pcsx-redux.main_2025-08-03_18-02-08.png)  
+![traingles!](./docs/assets/pcsx-redux.main_2025-08-03_19-28-22.png)  
+![polys!](./docs/assets/pcsx-redux.main_2025-08-03_20-45-35.png)  

scripts/build.ps1

@@ -32,10 +32,10 @@ function build-program { param(
 	write-host 'Done!'
 	pop-location
 }
-# build-program 'fillmem' 'fillmem'
+build-program 'fillmem' 'fillmem'
-# build-program 'warmup' 'exercise_1'
+build-program 'warmup' 'exercise_1'
-# build-program 'warmup' 'exercise_2'
+build-program 'warmup' 'exercise_2'
-# build-program 'warmup' 'exercise_3'
+build-program 'warmup' 'exercise_3'
-# build-program 'factorial' 'factorial' 
+build-program 'factorial' 'factorial' 
-# build-program 'graphics_system' 'hellogpu'
+build-program 'graphics_system' 'hellogpu'
 build-program 'graphics_system' 'hello_gouraud'