mirror of
https://github.com/FranLMSP/rmg-001.git
synced 2024-11-10 12:11:32 +00:00
Getters and setters for LCD Status
This commit is contained in:
parent
bb471a7de7
commit
88d5f08660
99
src/ppu.rs
99
src/ppu.rs
@ -42,38 +42,71 @@ pub enum LCDStatus {
|
||||
ModeFlag(LCDStatusModeFlag),
|
||||
}
|
||||
|
||||
pub struct Window {
|
||||
x: u8,
|
||||
y: u8,
|
||||
}
|
||||
const LCD_CONTROL_ADDRESS: u16 = 0xFF40;
|
||||
const LCD_STATUS_ADDRESS: u16 = 0xFF41;
|
||||
|
||||
const SCROLL_X_ADDRESS: u16 = 0xFF42;
|
||||
const SCROLL_Y_ADDRESS: u16 = 0xFF43;
|
||||
const LCD_Y_ADDRESS: u16 = 0xFF44;
|
||||
const LCD_Y_COMPARE_ADDRESS: u16 = 0xFF45;
|
||||
const DMA_ADDRESS: u16 = 0xFF46;
|
||||
const BACKGROUND_PALETTE_ADDRESS: u16 = 0xFF47;
|
||||
const OBJECT_PALETTE_0_ADDRESS: u16 = 0xFF48;
|
||||
const OBJECT_PALETTE_1_ADDRESS: u16 = 0xFF49;
|
||||
const WINDOW_X_ADDRESS: u16 = 0xFF4A;
|
||||
const WINDOW_Y_ADDRESS: u16 = 0xFF4B;
|
||||
|
||||
pub struct Window {}
|
||||
|
||||
impl Window {
|
||||
pub fn new() -> Self {
|
||||
Self {
|
||||
x: 0,
|
||||
y: 0,
|
||||
}
|
||||
Self {}
|
||||
}
|
||||
|
||||
fn get_x(bus: &Bus) -> u8 {
|
||||
bus.read(WINDOW_X_ADDRESS)
|
||||
}
|
||||
|
||||
fn set_x(bus: &mut Bus, val: u8) {
|
||||
bus.write(WINDOW_X_ADDRESS, val);
|
||||
}
|
||||
|
||||
fn get_y(bus: &Bus) -> u8 {
|
||||
bus.read(WINDOW_Y_ADDRESS)
|
||||
}
|
||||
|
||||
fn set_y(bus: &mut Bus, val: u8) {
|
||||
bus.write(WINDOW_Y_ADDRESS, val);
|
||||
}
|
||||
}
|
||||
|
||||
pub struct PPU {
|
||||
scroll_y: u8,
|
||||
scroll_x: u8,
|
||||
window: Window,
|
||||
}
|
||||
|
||||
const LCD_CONTROL_ADDRESS: u16 = 0xFF40;
|
||||
const LCD_STATUS_ADDRESS: u16 = 0xFF41;
|
||||
|
||||
impl PPU {
|
||||
pub fn new() -> Self {
|
||||
Self {
|
||||
scroll_x: 0,
|
||||
scroll_y: 0,
|
||||
window: Window::new(),
|
||||
}
|
||||
}
|
||||
|
||||
fn get_scroll_x(bus: &Bus) -> u8 {
|
||||
bus.read(SCROLL_X_ADDRESS)
|
||||
}
|
||||
|
||||
fn set_scroll_x(bus: &mut Bus, val: u8) {
|
||||
bus.write(SCROLL_X_ADDRESS, val);
|
||||
}
|
||||
|
||||
fn get_scroll_y(bus: &Bus) -> u8 {
|
||||
bus.read(SCROLL_Y_ADDRESS)
|
||||
}
|
||||
|
||||
fn set_scroll_y(bus: &mut Bus, val: u8) {
|
||||
bus.write(SCROLL_Y_ADDRESS, val);
|
||||
}
|
||||
|
||||
fn get_lcd_control(bus: &Bus, control: LCDControl) -> bool {
|
||||
let byte = bus.read(LCD_CONTROL_ADDRESS);
|
||||
match control {
|
||||
@ -90,15 +123,15 @@ impl PPU {
|
||||
|
||||
fn set_lcd_control(bus: &mut Bus, control: LCDControl, val: bool) {
|
||||
let mut byte = bus.read(LCD_CONTROL_ADDRESS);
|
||||
match control {
|
||||
LCDControl::DisplayEnable => byte = set_bit(byte, val, BitIndex::I7),
|
||||
LCDControl::WindowTileMapAddress => byte = set_bit(byte, val, BitIndex::I6),
|
||||
LCDControl::WindowEnable => byte = set_bit(byte, val, BitIndex::I5),
|
||||
LCDControl::BackgroundWindowTileAddress => byte = set_bit(byte, val, BitIndex::I4),
|
||||
LCDControl::BackgroundTileMapAddress => byte = set_bit(byte, val, BitIndex::I3),
|
||||
LCDControl::ObjectSize => byte = set_bit(byte, val, BitIndex::I2),
|
||||
LCDControl::ObjectEnable => byte = set_bit(byte, val, BitIndex::I1),
|
||||
LCDControl::BackgroundPriority => byte = set_bit(byte, val, BitIndex::I0),
|
||||
byte = match control {
|
||||
LCDControl::DisplayEnable => set_bit(byte, val, BitIndex::I7),
|
||||
LCDControl::WindowTileMapAddress => set_bit(byte, val, BitIndex::I6),
|
||||
LCDControl::WindowEnable => set_bit(byte, val, BitIndex::I5),
|
||||
LCDControl::BackgroundWindowTileAddress => set_bit(byte, val, BitIndex::I4),
|
||||
LCDControl::BackgroundTileMapAddress => set_bit(byte, val, BitIndex::I3),
|
||||
LCDControl::ObjectSize => set_bit(byte, val, BitIndex::I2),
|
||||
LCDControl::ObjectEnable => set_bit(byte, val, BitIndex::I1),
|
||||
LCDControl::BackgroundPriority => set_bit(byte, val, BitIndex::I0),
|
||||
};
|
||||
bus.write(LCD_CONTROL_ADDRESS, byte);
|
||||
}
|
||||
@ -119,4 +152,22 @@ impl PPU {
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
fn set_lcd_status(bus: &mut Bus, status: LCDStatus, val: bool) {
|
||||
let mut byte = bus.read(LCD_STATUS_ADDRESS);
|
||||
byte = match status {
|
||||
LCDStatus::LYCInterrupt => set_bit(byte, val, BitIndex::I6),
|
||||
LCDStatus::Mode2OAMInterrupt => set_bit(byte, val, BitIndex::I5),
|
||||
LCDStatus::Mode1VBlankInterrupt => set_bit(byte, val, BitIndex::I4),
|
||||
LCDStatus::Mode0HBlankInterrupt => set_bit(byte, val, BitIndex::I3),
|
||||
LCDStatus::LYCFlag => set_bit(byte, val, BitIndex::I2),
|
||||
LCDStatus::ModeFlag(mode) => match mode {
|
||||
LCDStatusModeFlag::HBlank => (byte & 0b11111100) | 0,
|
||||
LCDStatusModeFlag::VBlank => (byte & 0b11111100) | 1,
|
||||
LCDStatusModeFlag::SearchingOAM => (byte & 0b11111100) | 2,
|
||||
LCDStatusModeFlag::TransferringToLCD => (byte & 0b11111100) | 3,
|
||||
},
|
||||
};
|
||||
bus.write(LCD_STATUS_ADDRESS, byte);
|
||||
}
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user