diff --git a/.vscode/c_cpp_properties.json b/.vscode/c_cpp_properties.json
index 99c5ca1..cc2d581 100644
--- a/.vscode/c_cpp_properties.json
+++ b/.vscode/c_cpp_properties.json
@@ -8,12 +8,13 @@
                 "${workspaceFolder}/toolchain/pcsx-redux/src/mips",
                 "${workspaceFolder}/toolchain/psyq-4_7/include"
             ],
-            "cStandard": "c17",
+            "cStandard": "c11",
             "defines": [
                 "__STDC_HOSTED__ = 0",
-                "INTELLISENSE_DIRECTIVES=1"
+                "INTELLISENSE_DIRECTIVES"
             ],
-            "intelliSenseMode": "gcc-x86"
+            "intelliSenseMode": "gcc-x86",
+            "compilerPath": "C:\\Users\\Ed\\AppData\\Roaming\\mips\\versions\\v14.2.0\\bin\\mipsel-none-elf-gcc.exe",
         }
     ],
     "version": 4
diff --git a/.vscode/settings.json b/.vscode/settings.json
index d72c5fa..67276d8 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -2,6 +2,7 @@
 	"files.associations": {
 		"*.rmd": "markdown",
 		"*.s": "gas",
+		"*.dasm": "lldb.disassembly",
 		"*.asm": "gas",
 		"stdlib.h": "c",
 		"libetc.h": "c",
@@ -16,6 +17,12 @@
 		"iterator": "c",
 		"regex": "c",
 		"dsl.h": "c",
-		"xlocale": "c"
+		"xlocale": "c",
+		"gp.h": "c",
+		"array": "c",
+		"initializer_list": "c",
+		"string_view": "c",
+		"functional": "c",
+		"tuple": "c"
 	}
 }
\ No newline at end of file
diff --git a/code/asmdd/dsl.s b/code/asmdd/dsl.s
index c41e36d..b2f2b04 100644
--- a/code/asmdd/dsl.s
+++ b/code/asmdd/dsl.s
@@ -3,94 +3,94 @@
 # Instructions
 # Load
 .macro load_addr p1, p2
-    la \p1, \p2
+	la \p1, \p2
 .endm
 .macro load_imm p1, p2
-    li \p1, \p2
+	li \p1, \p2
 .endm
 .macro load_uimm p1, p2
-    lui \p1, \p2
+	lui \p1, \p2
 .endm
 .macro load_word p1, p2
-    lw \p1, \p2
+	lw \p1, \p2
 .endm
 # Store
 .macro store_word p1, p2
-    sw \p1, \p2
+	sw \p1, \p2
 .endm
 # Shift
 .macro shift_ll p1, p2, p3
-    sll \p1, \p2, \p3
+	sll \p1, \p2, \p3
 .endm
 .macro shift_rl p1, p2, p3
-    srl \p1, \p2, \p3
+	srl \p1, \p2, \p3
 .endm
 .macro shift_ra p1, p2, p3
-    sra \p1, \p2, \p3
+	sra \p1, \p2, \p3
 .endm
 # Addition
 .macro add_s p1, p2, p3
-    add \p1, \p2, \p3
+	add \p1, \p2, \p3
 .endm
 .macro add_u p1, p2, p3
-    add \p1, \p2, \p3
+	add \p1, \p2, \p3
 .endm
 .macro add_si p1, p2, p3
-    addi \p1, \p2, \p3
+	addi \p1, \p2, \p3
 .endm
 .macro add_ui p1, p2, p3
-    addiu \p1, \p2, \p3
+	addiu \p1, \p2, \p3
 .endm
 # Subtraction
 .macro sub_s p1, p2, p3
-    sub \p1, \p2, \p3
+	sub \p1, \p2, \p3
 .endm
 .macro sub_u p1, p2, p3
-    subu \p1, \p2, \p3
+	subu \p1, \p2, \p3
 .endm
 # Multiplication
 
 # Division
 .macro div_s p1, p2
-    div \p1, \p2
+	div \p1, \p2
 .endm
 .macro div_u p1, p2
-    divu \p1, \p2
+	divu \p1, \p2
 .endm
 .macro mov_from_high p1
-    mfhi \p1
+	mfhi \p1
 .endm
 .macro mov_from_low p1
-    mflo \p1
+	mflo \p1
 .endm
 # Branch
 .macro branch_ne_zero p1, p2
-    bnez \p1, \p2
+	bnez \p1, \p2
 .endm
 .macro branch_equal p1, p2, p3
-    beq \p1, \p2, \p3
+	beq \p1, \p2, \p3
 .endm
 .macro branch_gt_equal p1, p2, p3
-    bge \p1, \p2, \p3
+	bge \p1, \p2, \p3
 .endm
 .macro branch_gt p1, p2, p3
-    bgt \p1, \p2, \p3
+	bgt \p1, \p2, \p3
 .endm
 .macro branch_lt p1, p2, p3
-    blt \p1, \p2, \p3
+	blt \p1, \p2, \p3
 .endm
 # Jump
 .macro jump p1
-    j \p1
+	j \p1
 .endm
 .macro jump_nlink p1
-    jal \p1
+	jal \p1
 .endm
 .macro jump_reg p1
-    jr \p1
+	jr \p1
 .endm
 .macro jump_nreg p1
-    jalr \p1
+	jalr \p1
 .endm
 
 # Registers
diff --git a/code/asmdd/gp.s b/code/asmdd/gp.s
index 01d385a..b0ab4a3 100644
--- a/code/asmdd/gp.s
+++ b/code/asmdd/gp.s
@@ -176,6 +176,11 @@
 .equiv gp_b10_Y, 10
 .equiv gp_b16_X, 0
 .equiv gp_b16_Y, 16
+     
+.equiv RGB8_r,      0
+.equiv RGB8_g,      1
+.equiv RGB8_b,      2
+.equiv sizeof_RGB8, 3
 
 .equiv gp_pixel16, (2 * byte)
 .equiv gp_pixel24, (3 * byte)
diff --git a/code/asmdd/math.s b/code/asmdd/math.s
new file mode 100644
index 0000000..75220d7
--- /dev/null
+++ b/code/asmdd/math.s
@@ -0,0 +1,44 @@
+# Extent_2S16 { S16 width; S16 height; }
+.equ Extent_2S16_width,  0
+.equ Extent_2S16_height, 2
+.equ sizeof_Extent_2S16, 4
+# Extent_2S32 { S32 width; S32 height; }
+.equ Extent_2S32_width,  0
+.equ Extent_2S32_height, 4
+.equ sizeof_Extent_2S32, 8
+# Vec_2S16 { S16 x; S16 y; }
+.equ Vec_2S16_x,      0
+.equ Vec_2S16_y,      2
+.equ sizeof_Vec_2S16, 4
+# Vec_2S32 { S32 x; S32 y; }
+.equ Vec_2S32_x,      0
+.equ Vec_2S32_y,      4
+.equ sizeof_Vec_2S32, 8
+# Range_2S16 { Vec_2S16 p0; Vec_2S16 p1; }
+.equ Range_2S16_p0,     0
+.equ Range_2S16_p0_x,   0
+.equ Range_2S16_p0_y,   2
+.equ Range_2S16_p1,     4
+.equ Range_2S16_p1_x,   4
+.equ Range_2S16_p1_y,   6
+.equ sizeof_Range_2S16, 8
+# Range_2S32 { Vec_2S32 p0; Vec_2S32 p1; }
+.equ Range_2S32_p0,      0
+.equ Range_2S32_p0_x,    0
+.equ Range_2S32_p0_y,    4
+.equ Range_2S32_p1,      8
+.equ Range_2S32_p1_x,    8
+.equ Range_2S32_p1_y,   12
+.equ sizeof_Range_2S32, 16
+# Rect_S16 { S16 x; S16 y; S16 width; S16 height; }
+.equ Rect_S16_x,      0
+.equ Rect_S16_y,      2
+.equ Rect_S16_width,  4
+.equ Rect_S16_height, 6
+.equ sizeof_Rect_S16, 8
+# Rect_S32 { S32 x; S32 y; S32 width; S32 height; }
+.equ Rect_S32_x,      0
+.equ Rect_S32_y,      4
+.equ Rect_S32_width,  8
+.equ Rect_S32_height, 12
+.equ sizeof_Rect_S32, 16
diff --git a/code/duffle/dsl.h b/code/duffle/dsl.h
index 8bd1b4d..3eedc04 100644
--- a/code/duffle/dsl.h
+++ b/code/duffle/dsl.h
@@ -34,7 +34,7 @@ enum {
 #define def_enum(underlying_type, symbol)   underlying_type symbol; enum   symbol
 #define def_struct(symbol)                  struct symbol symbol;   struct symbol
 #define def_union(symbol)                   union  symbol symbol;   union  symbol
-#define fn(symbol)                          symbol
+#define def_proc(symbol)                    symbol
 #define opt_args(symbol, ...)               &(symbol){__VA_ARGS__}
 #define ret_type(type)                      type
 #define local_persist                       static
@@ -54,19 +54,19 @@ enum {
 #define giga(n)                             (cast(SSIZE, n) << 30)
 #define tera(n)                             (cast(SSIZE, n) << 40)
 
-#define range_iter(type, iter, m_begin, op, m_end)  \
-	tmpl(Iter_Range,type) iter = { \
-		.r = {(m_begin), (m_end)},   \
-		.cursor = (m_begin) };       \
-	iter.cursor op iter.r.end;     \
+#define span_iter(type, iter, m_begin, op, m_end)  \
+	tmpl(Iter_Span,type) iter = { \
+		.r = {(m_begin), (m_end)},  \
+		.cursor = (m_begin) };      \
+	iter.cursor op iter.r.end;    \
 	++ iter.cursor
 
-#define def_range(type)                                                \
-	        def_struct(tmpl(     Range,type)) { type begin; type end; }; \
-	typedef def_struct(tmpl(Iter_Range,type)) { tmpl(Range,type) r; type cursor; }
+#define def_span(type)                                                \
+	        def_struct(tmpl(     Span,type)) { type begin; type end; }; \
+	typedef def_struct(tmpl(Iter_Span,type)) { tmpl(Span,type) r; type cursor; }
 
-typedef def_range(S32);
-typedef def_range(U32);
-typedef def_range(SSIZE);
+typedef def_span(S32);
+typedef def_span(U32);
+typedef def_span(SSIZE);
 
-typedef void fn(VoidFn) (void);
+typedef void def_proc(VoidFn) (void);
diff --git a/code/duffle/gp.h b/code/duffle/gp.h
index 322e6d5..8a733f5 100644
--- a/code/duffle/gp.h
+++ b/code/duffle/gp.h
@@ -1,6 +1,7 @@
 #ifdef INTELLISENSE_DIRECTIVES
 #	pragma once
 #	include "dsl.h"
+#	include "math.h"
 #endif
 
 typedef def_enum(U32, gp_Commands) {
@@ -72,6 +73,8 @@ typedef def_enum(U32, gp_Commands) {
 #define gp_SetArea_TopLeft     (gcmd_SetDrawArea_TopLeft  << gcmd_offset)
 #define gp_SetArea_BottomRight (gcmd_SetDrawArea_BotRight << gcmd_offset)
 
+typedef def_struct(RGB8) { BYTE r; BYTE g; BYTE b; };
+
 typedef BYTE gp_Pixel16[1];
 typedef BYTE gp_Pixel24[3];
 
@@ -80,9 +83,6 @@ typedef BYTE gp_Pixel24[3];
 #define gp_b16_X 0
 #define gp_b16_Y 16 
 
-typedef def_struct(gp_Vec2) {
-	U16 x;
-	U16 y;
-};
+typedef def_struct(gp_Vec2) { U16 y; U16 x; };
 
-void gp_screen_init();
+void gp_screen_init(void) __asm__("gp_screen_init");
diff --git a/code/duffle/math.h b/code/duffle/math.h
new file mode 100644
index 0000000..2484ba7
--- /dev/null
+++ b/code/duffle/math.h
@@ -0,0 +1,21 @@
+#ifdef INTELLISENSE_DIRECTIVES
+#	pragma once
+#	include "dsl.h"
+#endif
+
+typedef def_farray(S16, 2);
+typedef def_farray(S32, 2);
+// typedef def_farray(F32, 2);
+
+typedef def_struct(Extent_2S16) { S16 width; S16 height; };
+typedef def_struct(Extent_2S32) { S32 width; S32 height; };
+// typedef def_struct(Extent_2F32) { F32 width; F32 height; }
+typedef def_struct(Vec_2S16)    { S16 x;     S16 y; };
+typedef def_struct(Vec_2S32)    { S32 x;     S32 y; };
+// typedef def_struct(Vec_2F32)    { F32 x;     F32 y; };
+typedef def_struct(Range_2S16) { Vec_2S16 p0; Vec_2S16 p1; };
+typedef def_struct(Range_2S32) { Vec_2S32 p0; Vec_2S32 p1; };
+// typedef def_struct(Range_2F32) { Vec_2F32 p0; Vec_2F32 p1; };
+
+typedef def_struct(Rect_S16) { S16 x; S16 y; S16 width; S16 height; };
+typedef def_struct(Rect_S32) { S32 x; S32 y; S32 width; S32 height; };
diff --git a/code/graphics_hello_psyq/hello_gpu.c b/code/graphics_hello_psyq/hello_gpu.c
index d0f90ba..3c647d5 100644
--- a/code/graphics_hello_psyq/hello_gpu.c
+++ b/code/graphics_hello_psyq/hello_gpu.c
@@ -1,11 +1,12 @@
 // #include <stdlib.h>
 #include "duffle/dsl.h"
+#include "duffle/math.h"
 #include "duffle/gp.h"
+#include "hello_gpu.h"
+
+DoubleBuffer screen_buffer;
+S16          active_screen_buffer;
 
-#define ScreenRes_X 320
-#define ScreenRes_Y 240
-#define ScreenRes_CenterX (ScreenRes_X >> 1)
-#define ScreenRes_CenterY (ScreenRes_Y >> 1)
 
 int main(void)
 {
diff --git a/code/graphics_hello_psyq/hello_gpu.h b/code/graphics_hello_psyq/hello_gpu.h
new file mode 100644
index 0000000..161dd4a
--- /dev/null
+++ b/code/graphics_hello_psyq/hello_gpu.h
@@ -0,0 +1,40 @@
+#ifdef INTELLISENSE_DIRECTIVES
+#	pragma once
+#	include "duffle/dsl.h"
+#	include "duffle/math.h"
+#	include "duffle/gp.h"
+#endif
+
+typedef def_struct(DrawEnv_Packed) { U32 tag; U32 code[15]; };
+typedef def_struct(DrawEnv) {
+	Rect_S16 clip_area;
+	A2_S16   drawwing_offset;
+	Rect_S16 texture_page;
+	BYTE     flag_dither;
+	BYTE     flag_draw_on_display;
+	BYTE     enable_auto_clear;
+	RGB8     initial_bg_color;
+	DrawEnv_Packed dr_env; // reserved
+};
+typedef def_struct(DisplayEnv) {
+	Rect_S16 display_area;
+	Rect_S16 screen;
+	BYTE     vinterlace;
+	BYTE     color24;
+	BYTE     pad0;
+	BYTE     pad1;
+};
+typedef def_farray(DrawEnv,    2);
+typedef def_farray(DisplayEnv, 2);
+typedef def_struct(DoubleBuffer) {
+	A2_DrawEnv    draw;
+	A2_DisplayEnv display;
+};
+
+#define ScreenRes_X 320
+#define ScreenRes_Y 240
+#define ScreenRes_CenterX (ScreenRes_X >> 1)
+#define ScreenRes_CenterY (ScreenRes_Y >> 1)
+
+extern DoubleBuffer screen_buffer;
+extern S16          active_screen_buffer;
diff --git a/code/graphics_hello_psyq/hello_gpu.s b/code/graphics_hello_psyq/hello_gpu.s
index 690827e..e619166 100644
--- a/code/graphics_hello_psyq/hello_gpu.s
+++ b/code/graphics_hello_psyq/hello_gpu.s
@@ -1,9 +1,67 @@
 // .include "./toolchain/pcsx-redux/src/mips/common/crt0/crt0.s"
 
 .include "./asmdd/dsl.s"
+.include "./asmdd/math.s"
 .include "./asmdd/io.s"
 .include "./asmdd/gp.s"
 
+# DrawEnv_Packed { U32 tag; U32 code[15]; }
+.equ DrawEnv_Packed_tag,    0
+.equ DrawEnv_Packed_code,   4
+.equ sizeof_DrawEnv_Packed, 64
+# DrawEnv {
+#     Rect_S16 clip_area;
+#     A2_S16   drawwing_offset;
+#     Rect_S16 texture_page;
+#     BYTE     flag_dither;
+#     BYTE     flag_draw_on_display;
+#     BYTE     enable_auto_clear;
+#     RGB8     initial_bg_color;
+#     // 2 bytes padding
+#     DrawEnv_Packed dr_env;
+# };
+.equ DrawEnv_clip_area,            0
+.equ DrawEnv_drawwing_offset,      8
+.equ DrawEnv_texture_page,         12
+.equ DrawEnv_flag_dither,          20
+.equ DrawEnv_flag_draw_on_display, 21
+.equ DrawEnv_enable_auto_clear,    22
+.equ DrawEnv_initial_bg_color,     23
+.equ DrawEnv_dr_env,               28
+.equ sizeof_DrawEnv,               92
+# DisplayEnv {
+#     Rect_S16 display_area;
+#     Rect_S16 screen;
+#     BYTE     vinterlace;
+#     BYTE     color24;
+#     BYTE     pad0;
+#     BYTE     pad1;
+# };
+.equ DisplayEnv_display_area, 0
+.equ DisplayEnv_screen,       8
+.equ DisplayEnv_vinterlace,   16
+.equ DisplayEnv_color24,      17
+.equ DisplayEnv_pad0,         18
+.equ DisplayEnv_pad1,         19
+.equ sizeof_DisplayEnv,       20
+# DoubleBuffer {
+#     DrawEnv    draw[2];
+#     DisplayEnv display[2];
+# };
+.equ DoubleBuffer_draw,      0
+.equ DoubleBuffer_draw_0,    0
+.equ DoubleBuffer_draw_1,    92  # 0 + sizeof_DrawEnv
+.equ DoubleBuffer_display,   184 # 92 * 2
+.equ DoubleBuffer_display_0, 184
+.equ DoubleBuffer_display_1, 204 # 184 + sizeof_DisplayEnv
+.equ sizeof_DoubleBuffer,    224
+# Screen Constants
+.equ ScreenRes_X,       320
+.equ ScreenRes_Y,       240
+.equ ScreenRes_CenterX, (ScreenRes_X >> 2)
+.equ ScreenRes_CenterY, (ScreenRes_Y >> 2)
+
+
 .global gp_screen_init
 .type gp_screen_init, @function
 gp_screen_init:
diff --git a/scripts/build_armips.ps1 b/scripts/build_armips.ps1
index 3b16afa..5505211 100644
--- a/scripts/build_armips.ps1
+++ b/scripts/build_armips.ps1
@@ -40,5 +40,5 @@ function build-program { param(
 # build-program 'graphics_hello' 'hellogpu'
 # build-program 'graphics_hello' 'hello_gouraud'
 # build-program 'graphics_hello' 'hello_gp_routines'
-# build-program 'graphics_hello' 'hello_image'
-build-program 'graphics_hello' 'hello_logo'
+build-program 'graphics_hello' 'hello_image'
+# build-program 'graphics_hello' 'hello_logo'
diff --git a/scripts/build_psyq.ps1 b/scripts/build_psyq.ps1
index 1cc7bab..6e87078 100644
--- a/scripts/build_psyq.ps1
+++ b/scripts/build_psyq.ps1
@@ -109,8 +109,8 @@ function assemble-unit { param(
 	$assemble_args += '-x', 'assembler-with-cpp'
 	$assemble_args += $f_compile, $unit, ($f_output + $link_module)
 
-    write-host "Assembling '$unit' -> '$link_module'" -ForegroundColor Cyan
-    $assemble_args | ForEach-Object { Write-Host "`t$_" -ForegroundColor Green }
+    write-host "Assembling '$unit' -> '$link_module'" -ForegroundColor DarkCyan
+    # $assemble_args | ForEach-Object { Write-Host "`t$_" -ForegroundColor Green }
 		& $Compiler $assemble_args
     if ($LASTEXITCODE -ne 0) { write-error "Compilation failed for $unit. Aborting."; exit 1 }
 }
@@ -150,8 +150,8 @@ function compile-unit { param(
 	$compile_args += $f_compile
 	$compile_args += $unit, ($f_output + $link_module)
 
-    write-host "Compiling '$unit' -> '$link_module'" -ForegroundColor Cyan
-    $compile_args | ForEach-Object { Write-Host "`t$_" -ForegroundColor Green }
+    write-host "Compiling '$unit' -> '$link_module'" -ForegroundColor DarkCyan
+    # $compile_args | ForEach-Object { Write-Host "`t$_" -ForegroundColor Green }
 		& $Compiler $compile_args
     if ($LASTEXITCODE -ne 0) { write-error "Compilation failed for $unit. Aborting."; exit 1 }
 }
@@ -220,9 +220,9 @@ function link-modules { param(
 	$base_name = [System.IO.Path]::GetFileNameWithoutExtension($elf)
 	$dasm      = "$(join-path $path_build $base_name).dasm"
 
-	write-host "Linking modules into '$elf'"  -ForegroundColor Cyan
+	write-host "Linking modules into '$elf'"  -ForegroundColor DarkCyan
 	$final_link_args += ($f_link_pass_through_prefix + $f_link_end_group)
-	$final_link_args | foreach-object { write-host $_ }
+	# $final_link_args | foreach-object { write-host $_ }
 		& $Compiler $final_link_args
 		& mipsel-none-elf-objdump.exe -W $elf >> $dasm
 	if ($LASTEXITCODE -ne 0) { write-error "Linking failed. Aborting."; exit 1 }
@@ -275,18 +275,19 @@ function build-graphis_hello {
 
 	$path_module = join-path $path_code 'graphics_hello_psyq'
 
-	$src_asm_crt    = join-path $path_nugget_common 'crt0/crt0.s'
-	$module_asm_crt = join-path $path_build         'crt0.o'
-
-	$src_asm    = join-path $path_module 'hello_gpu.s'
-	$module_asm = join-path $path_build  'hello_gpu.o'
-
 	$assemble_args = @()
 	$assemble_args += $f_debug
 	$assemble_args += $f_optimize_none
 	$assemble_args += ($f_include + $path_code)
-	assemble-unit $src_asm_crt $module_asm_crt     $includes $assemble_args
-	assemble-unit $src_asm     $module_asm $includes $assemble_args
+
+	$src_asm_crt    = join-path $path_nugget_common 'crt0/crt0.s'
+	$module_asm_crt = join-path $path_build         'crt0.o'
+	# assemble-unit $src_asm_crt $module_asm_crt $includes $assemble_args
+
+	$src_asm    = join-path $path_module 'hello_gpu.s'
+	$module_asm = join-path $path_build  'hello_gpu.o'
+
+	assemble-unit $src_asm $module_asm $includes $assemble_args
 
 	$src_c    = join-path $path_module 'hello_gpu.c'
 	$module_c = join-path $path_build  'hello_gpu_c.o'