Complete initial tests for startup

src/debugger.rs

@@ -107,6 +107,17 @@ impl DebuggerState {
                         labelled_box("BG at $1000", false),
                         labelled_box("Sprites at $1000", false),
                     ],
+                    column![
+                        labelled_box("Even frame", nes.ppu.even),
+                        labelled_box("BG Enabled", false),
+                        labelled_box("Sprites Enabled", false),
+                        labelled_box("BG Mask", false),
+                        labelled_box("Sprites Mask", false),
+                        labelled_box("Grayscale", false),
+                        labelled_box("Intensify Red", false),
+                        labelled_box("Intensify Green", false),
+                        labelled_box("Intensify Blue", false),
+                    ],
                     column![
                         run_type(
                             "PPU Cycles:",
@@ -190,7 +201,7 @@ impl DebuggerState {
             DebuggerMessage::RunToScanLine => {
                 Self::run_until(nes, |_, n| n.ppu.scanline == self.to_scan_line)
             }
-            DebuggerMessage::RunFrames => Self::run_n_clock_cycles(nes, self.frames * 341 * 261),
+            DebuggerMessage::RunFrames => Self::run_n_clock_cycles(nes, self.frames * 341 * 262),
             DebuggerMessage::Run => todo!(),
             DebuggerMessage::Pause => todo!(),
         }
@@ -205,7 +216,7 @@ fn run_type<'a, Message: Clone + 'a>(
 ) -> Element<'a, Message> {
     row![
         widget::container(text(label)).padding(2.),
-        widget::container(number_input(val).on_input(update)).padding(2.),
+        widget::container(number_input(val).on_input(update).on_submit(run.clone())).padding(2.),
         widget::container(button(image("./images/ic_fluent_play_24_filled.png")).on_press(run))
             .padding(2.),
     ]

src/main.rs

@@ -1,7 +1,4 @@
-use std::{
+use std::{collections::HashMap, fmt};
-    collections::HashMap,
-    fmt,
-};
 
 use iced::{
     Color, Element, Font,
@@ -15,11 +12,14 @@ use iced::{
     window::{self, Id, Settings},
 };
 use nes_emu::{
-    debugger::{DebuggerMessage, DebuggerState}, header_menu::header_menu, hex_view::{HexEvent, HexView}, NES, PPU
+    NES, PPU,
+    debugger::{DebuggerMessage, DebuggerState},
+    header_menu::header_menu,
+    hex_view::{HexEvent, HexView},
 };
 use tracing_subscriber::EnvFilter;
 
-const ROM_FILE: &str = concat!(env!("ROM_DIR"), "/", "basic_init_1.nes");
+const ROM_FILE: &str = concat!(env!("ROM_DIR"), "/", "even_odd.nes");
 // const ROM_FILE: &str = "./Super Mario Bros. (World).nes";
 
 extern crate nes_emu;
@@ -45,6 +45,7 @@ enum WindowType {
     Memory(MemoryTy, HexView),
     TileMap,
     TileViewer,
+    Palette,
     Debugger,
 }
 
@@ -93,8 +94,7 @@ enum Message {
 
 impl Emulator {
     fn new() -> (Self, Task<Message>) {
-        let mut nes = nes_emu::NES::load_nes_file(ROM_FILE)
+        let mut nes = nes_emu::NES::load_nes_file(ROM_FILE).expect("Failed to load nes file");
-            .expect("Failed to load nes file");
         nes.reset();
         let (win, task) = iced::window::open(Settings::default());
         (
@@ -112,6 +112,7 @@ impl Emulator {
             Some(WindowType::Memory(_, _)) => "NES MemoryView".into(),
             Some(WindowType::TileMap) => "NES TileMap".into(),
             Some(WindowType::TileViewer) => "NES Tile Viewer".into(),
+            Some(WindowType::Palette) => "NES Palette Viewer".into(),
             Some(WindowType::Debugger) => "NES Debugger".into(),
             None => todo!(),
         }
@@ -159,9 +160,15 @@ impl Emulator {
                     return view.update(val).map(move |e| Message::Hex(id, e));
                 }
             }
-            Message::Header(HeaderButton::Reset) => { self.nes.reset(); }
+            Message::Header(HeaderButton::Reset) => {
-            Message::Header(HeaderButton::PowerCycle) => { self.nes.power_cycle(); }
+                self.nes.reset();
-            Message::Debugger(debugger_message) => self.debugger.update(debugger_message, &mut self.nes),
+            }
+            Message::Header(HeaderButton::PowerCycle) => {
+                self.nes.power_cycle();
+            }
+            Message::Debugger(debugger_message) => {
+                self.debugger.update(debugger_message, &mut self.nes)
+            }
         }
         // self.image.0.clone_from(self.nes.image());
         Task::none()
@@ -193,13 +200,28 @@ impl Emulator {
                 container(content).width(Fill).height(Fill).into()
             }
             Some(WindowType::TileMap) => {
-                container(Canvas::new(DbgImage::PatternTable(self.nes.ppu()))).width(Fill).height(Fill).into()
+                container(Canvas::new(DbgImage::NameTable(self.nes.ppu())))
+                    .width(Fill)
+                    .height(Fill)
+                    .into()
             }
             Some(WindowType::TileViewer) => {
-                container(Canvas::new(DbgImage::NameTable(self.nes.ppu()))).width(Fill).height(Fill).into()
+                container(Canvas::new(DbgImage::PatternTable(self.nes.ppu())))
+                    .width(Fill)
+                    .height(Fill)
+                    .into()
+            }
+            Some(WindowType::Palette) => {
+                container(Canvas::new(DbgImage::Palette(self.nes.ppu())))
+                    .width(Fill)
+                    .height(Fill)
+                    .into()
             }
             Some(WindowType::Debugger) => {
-                container(self.debugger.view(&self.nes).map(Message::Debugger)).width(Fill).height(Fill).into()
+                container(self.debugger.view(&self.nes).map(Message::Debugger))
+                    .width(Fill)
+                    .height(Fill)
+                    .into()
             }
             None => panic!("Window not found"),
             // _ => todo!(),
@@ -231,10 +253,7 @@ impl Emulator {
         row![
             header_menu(
                 "Console",
-                [
+                [HeaderButton::Reset, HeaderButton::PowerCycle,],
-                    HeaderButton::Reset,
-                    HeaderButton::PowerCycle,
-                ],
                 Message::Header
             ),
             header_menu(
@@ -290,6 +309,7 @@ impl Program<Message> for Emulator {
 enum DbgImage<'a> {
     NameTable(&'a PPU),
     PatternTable(&'a PPU),
+    Palette(&'a PPU),
 }
 
 impl Program<Message> for DbgImage<'_> {
@@ -310,6 +330,7 @@ impl Program<Message> for DbgImage<'_> {
         match self {
             DbgImage::NameTable(ppu) => ppu.render_name_table(&mut name_table_frame),
             DbgImage::PatternTable(ppu) => ppu.render_pattern_tables(&mut name_table_frame),
+            DbgImage::Palette(ppu) => ppu.render_palette(&mut name_table_frame),
         }
         vec![name_table_frame.into_geometry()]
     }

src/ppu.rs

@@ -1,6 +1,13 @@
-use iced::{advanced::graphics::geometry::Renderer, widget::canvas::{Fill, Frame}, Point, Size};
+use iced::{
+    Point, Size,
+    advanced::graphics::geometry::Renderer,
+    widget::canvas::{Fill, Frame},
+};
 
-use crate::{hex_view::Memory, mem::{MemoryMap, Segment}};
+use crate::{
+    hex_view::Memory,
+    mem::{MemoryMap, Segment},
+};
 
 #[derive(Clone, Copy, PartialEq, Eq, Hash)]
 pub struct Color {
@@ -91,6 +98,15 @@ pub struct Mask {
     em_blue: bool,
 }
 
+const COLORS: &'static [Color; 0b11_1111] = &[
+    Color { r: 0, g: 0, b: 0}; 0b11_1111
+];
+
+pub struct Palette {
+    colors: &'static [Color; 0b11_1111],
+    ram: [u8; 0x20]
+}
+
 pub struct PPU {
     // registers: PPURegisters,
     frame_count: usize,
@@ -104,6 +120,7 @@ pub struct PPU {
     pub vblank: bool,
 
     pub(crate) memory: MemoryMap<PPUMMRegisters>,
+    palette: Palette,
     background: Background,
     oam: OAM,
     pub render_buffer: RenderBuffer<256, 240>,
@@ -145,11 +162,12 @@ impl PPU {
                 em_green: false,
                 em_blue: false,
             },
+            palette: Palette { colors: COLORS, ram: [0; _] },
             vblank: false,
             frame_count: 0,
             nmi_enabled: false,
             nmi_waiting: false,
-            even: true, // ??
+            even: false,
             scanline: 0,
             pixel: 25,
             render_buffer: RenderBuffer::empty(),
@@ -157,7 +175,8 @@ impl PPU {
                 Segment::rom("CHR ROM", 0x0000, rom),
                 Segment::ram("Internal VRAM", 0x2000, 0x1000),
                 Segment::mirror("Mirror of VRAM", 0x3000, 0x0F00, 1),
-                Segment::reg("Palette Control", 0x3F00, 0x0100, PPUMMRegisters::Palette),
+                Segment::reg("Palette Control", 0x3F00, 0x0020, PPUMMRegisters::Palette),
+                Segment::mirror("Mirror of Palette", 0x3F20, 0x00E0, 3),
             ]),
             background: Background {
                 v: 0,
@@ -182,6 +201,10 @@ impl PPU {
         };
     }
 
+    pub fn rendering_enabled(&self) -> bool {
+        self.mask.enable_background || self.mask.enable_sprites
+    }
+
     pub fn read_reg(&mut self, offset: u16) -> u8 {
         match offset {
             0 => panic!("ppuctrl is write-only"),
@@ -190,7 +213,6 @@ impl PPU {
                 let tmp = if self.vblank { 0b1000_0000 } else { 0 };
                 self.vblank = false;
                 self.background.w = false;
-                println!("Reading status: {:02X}", tmp);
                 tmp
             }
             3 => panic!("oamaddr is write-only"),
@@ -227,7 +249,7 @@ impl PPU {
                 self.mask.background_on_left_edge = val & 0b0000_0010 != 0;
                 self.mask.sprites_on_left_edge = val & 0b0000_0100 != 0;
                 self.mask.enable_background = val & 0b0000_1000 != 0;
-                self.mask.enable_background = val & 0b0001_0000 != 0;
+                self.mask.enable_sprites = val & 0b0001_0000 != 0;
                 self.mask.em_red = val & 0b0010_0000 != 0;
                 self.mask.em_green = val & 0b0100_0000 != 0;
                 self.mask.em_blue = val & 0b1000_0000 != 0;
@@ -284,7 +306,9 @@ impl PPU {
     pub fn run_one_clock_cycle(&mut self) -> bool {
         self.cycle += 1;
         self.pixel += 1;
-        if self.scanline == 261 && (self.pixel == 341 || (self.pixel == 340 && self.even)) {
+        if self.scanline == 261
+            && (self.pixel == 341 || (self.pixel == 340 && self.even && self.rendering_enabled()))
+        {
             self.scanline = 0;
             self.pixel = 0;
             self.even = !self.even;
@@ -388,10 +412,22 @@ impl PPU {
                             Size::new(1., 1.),
                             match (low & (1 << bit) != 0, high & (1 << bit) != 0) {
                                 (false, false) => Color { r: 0, g: 0, b: 0 },
-                                (true, false) => Color { r: 64, g: 64, b: 64 },
+                                (true, false) => Color {
-                                (false, true) => Color { r: 128, g: 128, b: 128 },
+                                    r: 64,
-                                (true, true) => Color { r: 255, g: 255, b: 255 },
+                                    g: 64,
-                        }
+                                    b: 64,
+                                },
+                                (false, true) => Color {
+                                    r: 128,
+                                    g: 128,
+                                    b: 128,
+                                },
+                                (true, true) => Color {
+                                    r: 255,
+                                    g: 255,
+                                    b: 255,
+                                },
+                            },
                         );
                     }
                 }
@@ -409,14 +445,29 @@ impl PPU {
                     let high = self.memory.peek(name + y_off + 8).unwrap();
                     for bit in 0..8 {
                         frame.fill_rectangle(
-                            Point::new(x as f32 * 8. + 8. - bit as f32, y as f32 * 8. + y_off as f32),
+                            Point::new(
+                                x as f32 * 8. + 8. - bit as f32,
+                                y as f32 * 8. + y_off as f32,
+                            ),
                             Size::new(1., 1.),
                             match (low & (1 << bit) != 0, high & (1 << bit) != 0) {
                                 (false, false) => Color { r: 0, g: 0, b: 0 },
-                                (true, false) => Color { r: 64, g: 64, b: 64 },
+                                (true, false) => Color {
-                                (false, true) => Color { r: 128, g: 128, b: 128 },
+                                    r: 64,
-                                (true, true) => Color { r: 255, g: 255, b: 255 },
+                                    g: 64,
-                        }
+                                    b: 64,
+                                },
+                                (false, true) => Color {
+                                    r: 128,
+                                    g: 128,
+                                    b: 128,
+                                },
+                                (true, true) => Color {
+                                    r: 255,
+                                    g: 255,
+                                    b: 255,
+                                },
+                            },
                         );
                     }
                 }
@@ -431,14 +482,29 @@ impl PPU {
                     let high = self.memory.peek(name + y_off + 8 + 0x1000).unwrap();
                     for bit in 0..8 {
                         frame.fill_rectangle(
-                            Point::new(x as f32 * 8. + 8. - bit as f32, y as f32 * 8. + y_off as f32 + 130.),
+                            Point::new(
+                                x as f32 * 8. + 8. - bit as f32,
+                                y as f32 * 8. + y_off as f32 + 130.,
+                            ),
                             Size::new(1., 1.),
                             match (low & (1 << bit) != 0, high & (1 << bit) != 0) {
                                 (false, false) => Color { r: 0, g: 0, b: 0 },
-                                (true, false) => Color { r: 64, g: 64, b: 64 },
+                                (true, false) => Color {
-                                (false, true) => Color { r: 128, g: 128, b: 128 },
+                                    r: 64,
-                                (true, true) => Color { r: 255, g: 255, b: 255 },
+                                    g: 64,
-                        }
+                                    b: 64,
+                                },
+                                (false, true) => Color {
+                                    r: 128,
+                                    g: 128,
+                                    b: 128,
+                                },
+                                (true, true) => Color {
+                                    r: 255,
+                                    g: 255,
+                                    b: 255,
+                                },
+                            },
                         );
                     }
                 }
@@ -447,6 +513,17 @@ impl PPU {
             }
         }
     }
+    pub fn render_palette<R: Renderer>(&self, frame: &mut Frame<R>) {
+        frame.fill_rectangle(
+            Point::new(0., 0.),
+            Size::new(10., 10.),
+            Color {
+                r: todo!(),
+                g: todo!(),
+                b: todo!(),
+            },
+        );
+    }
 }
 
 #[cfg(test)]

src/test_roms/basic_init_2.asm

@@ -0,0 +1,43 @@
+.inesprg 2  ; 2 banks
+.ineschr 1  ; 
+.inesmap 0  ; mapper 0 = NROM
+.inesmir 0  ; background mirroring, horizontal
+
+.org $8000
+RESET:
+        sei ; Ignore IRQs while starting up
+        cld ; disabled decimal mode (iirc it doesn't work properly on NES anyway)
+        ldx #$40
+        stx $4017 ; Disable APU frame IRQ
+        ldx #$ff
+        txs ; Set stack pointer to 0x1ff
+        inx ; Set x to zero
+        stx $2000 ; Disable NMI (by writing zero)
+        stx $2001 ; Disable rendering
+        stx $4010 ; Disable DMC IRQs
+
+        bit $2002 ; Clear vblank flag by reading ppu status
+VBLANKWAIT1:
+        bit $2002
+        bpl VBLANKWAIT1
+VBLANKWAIT2:
+        bit $2002
+        bpl VBLANKWAIT2
+        hlt
+        hlt
+
+ERROR_:
+        hlt
+
+IGNORE:
+        rti
+
+.org $FFFA	; Interrupt vectors go here:
+.word IGNORE ; NMI
+.word RESET ; Reset
+.word IGNORE; IRQ
+
+;;;; NESASM COMPILER STUFF, ADDING THE PATTERN DATA ;;;;
+
+.incbin "Sprites.pcx"
+.incbin "Tiles.pcx"

src/test_roms/basic_init_3.asm

@@ -0,0 +1,46 @@
+.inesprg 2  ; 2 banks
+.ineschr 1  ; 
+.inesmap 0  ; mapper 0 = NROM
+.inesmir 0  ; background mirroring, horizontal
+
+.org $8000
+RESET:
+        sei ; Ignore IRQs while starting up
+        cld ; disabled decimal mode (iirc it doesn't work properly on NES anyway)
+        ldx #$40
+        stx $4017 ; Disable APU frame IRQ
+        ldx #$ff
+        txs ; Set stack pointer to 0x1ff
+        inx ; Set x to zero
+        stx $2000 ; Disable NMI (by writing zero)
+        stx $2001 ; Disable rendering
+        stx $4010 ; Disable DMC IRQs
+
+        bit $2002 ; Clear vblank flag by reading ppu status
+VBLANKWAIT1:
+        bit $2002
+        bpl VBLANKWAIT1
+VBLANKWAIT2:
+        bit $2002
+        bpl VBLANKWAIT2
+VBLANKWAIT3:
+        bit $2002
+        bpl VBLANKWAIT3
+        hlt
+        hlt
+
+ERROR_:
+        hlt
+
+IGNORE:
+        rti
+
+.org $FFFA	; Interrupt vectors go here:
+.word IGNORE ; NMI
+.word RESET ; Reset
+.word IGNORE; IRQ
+
+;;;; NESASM COMPILER STUFF, ADDING THE PATTERN DATA ;;;;
+
+.incbin "Sprites.pcx"
+.incbin "Tiles.pcx"

src/test_roms/even_odd.asm

@@ -0,0 +1,44 @@
+.inesprg 2  ; 2 banks
+.ineschr 1  ; 
+.inesmap 0  ; mapper 0 = NROM
+.inesmir 0  ; background mirroring, horizontal
+
+.org $8000
+RESET:
+        sei ; Ignore IRQs while starting up
+        cld ; disabled decimal mode (iirc it doesn't work properly on NES anyway)
+        ldx #$40
+        stx $4017 ; Disable APU frame IRQ
+        ldx #$ff
+        txs ; Set stack pointer to 0x1ff
+        inx ; Set x to zero
+        stx $2000 ; Disable NMI (by writing zero)
+        stx $4010 ; Disable DMC IRQs
+        ldx #$08
+        stx $2001 ; Disable rendering
+
+        bit $2002 ; Clear vblank flag by reading ppu status
+VBLANKWAIT1:
+        bit $2002
+        bpl VBLANKWAIT1
+VBLANKWAIT2:
+        bit $2002
+        bpl VBLANKWAIT2
+        hlt
+        hlt
+
+ERROR_:
+        hlt
+
+IGNORE:
+        rti
+
+.org $FFFA	; Interrupt vectors go here:
+.word IGNORE ; NMI
+.word RESET ; Reset
+.word IGNORE; IRQ
+
+;;;; NESASM COMPILER STUFF, ADDING THE PATTERN DATA ;;;;
+
+.incbin "Sprites.pcx"
+.incbin "Tiles.pcx"

src/test_roms/mod.rs

@@ -15,6 +15,20 @@ macro_rules! rom_test {
             $eval
         }
     };
+    ($name:ident, . $rom:literal, |$nes:ident| $eval:expr) => {
+        rom_test!($name, . $rom, timeout = 10000000, |$nes| $eval);
+    };
+    ($name:ident, . $rom:literal, timeout = $timeout:expr, |$nes:ident| $eval:expr) => {
+        #[test]
+        fn $name() {
+            let rom_file = $rom;
+            println!("{}: {}", stringify!($name), rom_file);
+            let mut $nes = NES::load_nes_file(rom_file).expect("Failed to create nes object");
+            $nes.reset_and_run_with_timeout($timeout);
+            println!("Final: {:?}", $nes);
+            $eval
+        }
+    };
 }
 
 rom_test!(basic_cpu, "basic-cpu.nes", |nes| {
@@ -23,6 +37,8 @@ rom_test!(basic_cpu, "basic-cpu.nes", |nes| {
     assert_eq!(nes.cycle, 11);
     // This is off by one from Mesen, because Mesen is left pointing at the 'invalid' opcode
     assert_eq!(nes.cpu.pc, 0x8002);
+    // Off by one from Mesen, since Mesen doesn't count the clock cycle attempting to execute the 'invalid' opcode
+    assert_eq!(nes.ppu.pixel, 35);
 
     assert_eq!(nes.cpu.sp, 0xFD);
     // assert_eq!(nes.cpu.a, 0x00);
@@ -35,6 +51,7 @@ rom_test!(read_write, "read_write.nes", |nes| {
     assert_eq!(nes.cycle, 31);
     assert_eq!(nes.cpu.pc, 0x8012);
     assert_eq!(nes.cpu.sp, 0xFD);
+
     assert_eq!(nes.cpu.a, 0xAA);
     assert_eq!(nes.cpu.x, 0xAA);
     assert_eq!(nes.cpu.y, 0xAA);
@@ -48,6 +65,7 @@ rom_test!(basic_init_0, "basic_init_0.nes", |nes| {
     assert_eq!(nes.cycle, 41);
     assert_eq!(nes.cpu.pc, 0x8018);
     assert_eq!(nes.cpu.sp, 0xFF);
+
     assert_eq!(nes.cpu.a, 0x00);
     assert_eq!(nes.cpu.x, 0x00);
     assert_eq!(nes.cpu.y, 0x00);
@@ -56,10 +74,59 @@ rom_test!(basic_init_0, "basic_init_0.nes", |nes| {
 rom_test!(basic_init_1, "basic_init_1.nes", |nes| {
     assert_eq!(nes.last_instruction, "0x801C HLT :2 []");
     assert_eq!(nes.cycle, 27403);
-    assert_eq!(nes.ppu.pixel, 30);
     assert_eq!(nes.cpu.pc, 0x801D);
+    assert_eq!(nes.ppu.pixel, 30);
+
     assert_eq!(nes.cpu.sp, 0xFF);
     assert_eq!(nes.cpu.a, 0x00);
     assert_eq!(nes.cpu.x, 0x00);
     assert_eq!(nes.cpu.y, 0x00);
 });
+
+rom_test!(basic_init_2, "basic_init_2.nes", |nes| {
+    assert_eq!(nes.last_instruction, "0x8021 HLT :2 []");
+    assert_eq!(nes.cycle, 57180);
+    assert_eq!(nes.cpu.pc, 0x8022);
+    assert_eq!(nes.ppu.pixel, 19);
+
+    assert_eq!(nes.cpu.sp, 0xFF);
+    assert_eq!(nes.cpu.a, 0x00);
+    assert_eq!(nes.cpu.x, 0x00);
+    assert_eq!(nes.cpu.y, 0x00);
+});
+
+rom_test!(basic_init_3, "basic_init_3.nes", |nes| {
+    assert_eq!(nes.last_instruction, "0x8026 HLT :2 []");
+    assert_eq!(nes.cycle, 86964);
+    assert_eq!(nes.cpu.pc, 0x8027);
+    assert_eq!(nes.ppu.pixel, 29);
+
+    assert_eq!(nes.cpu.sp, 0xFF);
+    assert_eq!(nes.cpu.a, 0x00);
+    assert_eq!(nes.cpu.x, 0x00);
+    assert_eq!(nes.cpu.y, 0x00);
+});
+
+rom_test!(even_odd, "even_odd.nes", |nes| {
+    assert_eq!(nes.last_instruction, "0x8023 HLT :2 []");
+    assert_eq!(nes.cycle, 57182);
+    assert_eq!(nes.cpu.pc, 0x8024);
+    assert_eq!(nes.ppu.pixel, 25);
+
+    assert_eq!(nes.cpu.sp, 0xFF);
+    assert_eq!(nes.cpu.a, 0x00);
+    assert_eq!(nes.cpu.x, 0x08);
+    assert_eq!(nes.cpu.y, 0x00);
+});
+
+// rom_test!(even_odd, "even_odd.nes", |nes| {
+//     assert_eq!(nes.last_instruction, "0x8023 HLT :2 []");
+//     assert_eq!(nes.cycle, 57182);
+//     assert_eq!(nes.cpu.pc, 0x8024);
+//     assert_eq!(nes.ppu.pixel, 25);
+
+//     assert_eq!(nes.cpu.sp, 0xFF);
+//     assert_eq!(nes.cpu.a, 0x00);
+//     assert_eq!(nes.cpu.x, 0x08);
+//     assert_eq!(nes.cpu.y, 0x00);
+// });

src/test_roms/palette_test.asm.old

@@ -0,0 +1,56 @@
+.inesprg 2  ; 2 banks
+.ineschr 1  ; 
+.inesmap 0  ; mapper 0 = NROM
+.inesmir 0  ; background mirroring, horizontal
+
+; .org $0000 ; "ZEROPAGE"
+ppu_emphasis = $0000
+color        = $0001
+temp         = $0002
+gamepad      = $0003
+gamepad_last = $0004
+
+; .org $0200 ; "OAM"
+; .assert ((* & $FF) = 0),error,"oam not aligned to page"
+oam = $0200
+
+.org $8000
+RESET:
+        sei ; Ignore IRQs while starting up
+        cld ; disabled decimal mode (iirc it doesn't work properly on NES anyway)
+        ldx #$40
+        stx $4017 ; Disable APU frame IRQ
+        ldx #$ff
+        txs ; Set stack pointer to 0x1ff
+        inx ; Set x to zero
+        stx $2000 ; Disable NMI (by writing zero)
+        stx $4010 ; Disable DMC IRQs
+        ldx #$08
+        stx $2001 ; Disable rendering
+
+        bit $2002 ; Clear vblank flag by reading ppu status
+VBLANKWAIT1:
+        bit $2002
+        bpl VBLANKWAIT1
+VBLANKWAIT2:
+        bit $2002
+        bpl VBLANKWAIT2
+        hlt
+        hlt
+
+ERROR_:
+        hlt
+
+IGNORE:
+        rti
+
+
+.org $FFFA	; Interrupt vectors go here:
+.word nmi; NMI
+.word reset ; Reset
+.word irq; IRQ
+
+;;;; NESASM COMPILER STUFF, ADDING THE PATTERN DATA ;;;;
+
+.incbin "Sprites.pcx"
+.incbin "Tiles.pcx"