75 lines
1.7 KiB
Rust
75 lines
1.7 KiB
Rust
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#[derive(Debug, Clone, Copy, Default)]
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pub struct Interrupt {
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pub flag: InterruptFlag,
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pub enable: InterruptEnable,
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}
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#[derive(Debug, Clone, Copy, Default)]
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pub struct InterruptEnable {
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vblank: bool,
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lcd_stat: bool,
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timer: bool,
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serial: bool,
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joypad: bool,
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}
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impl From<u8> for InterruptEnable {
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fn from(byte: u8) -> Self {
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Self {
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vblank: (byte >> 0 & 0x01) == 0x01,
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lcd_stat: (byte >> 1 & 0x01) == 0x01,
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timer: (byte >> 2 & 0x01) == 0x01,
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serial: (byte >> 3 & 0x01) == 0x01,
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joypad: (byte >> 4 & 0x01) == 0x01,
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}
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}
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}
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impl From<InterruptEnable> for u8 {
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fn from(flag: InterruptEnable) -> Self {
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(flag.joypad as u8) << 4
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| (flag.serial as u8) << 3
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| (flag.timer as u8) << 2
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| (flag.lcd_stat as u8) << 1
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| (flag.vblank as u8) << 0
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}
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}
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#[derive(Debug, Clone, Copy, Default)]
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pub struct InterruptFlag {
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vblank: bool,
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lcd_stat: bool,
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timer: bool,
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serial: bool,
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joypad: bool,
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}
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impl From<u8> for InterruptFlag {
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fn from(byte: u8) -> Self {
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Self {
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vblank: (byte >> 0 & 0x01) == 0x01,
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lcd_stat: (byte >> 1 & 0x01) == 0x01,
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timer: (byte >> 2 & 0x01) == 0x01,
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serial: (byte >> 3 & 0x01) == 0x01,
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joypad: (byte >> 4 & 0x01) == 0x01,
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}
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}
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}
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impl From<InterruptFlag> for u8 {
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fn from(flag: InterruptFlag) -> Self {
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(flag.joypad as u8) << 4
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| (flag.serial as u8) << 3
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| (flag.timer as u8) << 2
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| (flag.lcd_stat as u8) << 1
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| (flag.vblank as u8) << 0
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}
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}
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enum InterruptType {
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VBlank,
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LCDStat,
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Timer,
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Serial,
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Joypad,
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}
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