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Integrate IRQ.
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parent
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commit
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@ -29,10 +29,13 @@ use address::Address;
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use address::AddressDiff;
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use registers::StackPointer;
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pub static MEMORY_ADDRESS_BEGIN: Address = Address(0x0000);
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pub static MEMORY_ADDRESS_END: Address = Address(0xffff);
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pub static STACK_ADDRESS_BEGIN: Address = Address(0x0100);
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pub static STACK_ADDRESS_END: Address = Address(0x01ff);
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pub static MEMORY_ADDRESS_BEGIN: Address = Address(0x0000);
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pub static MEMORY_ADDRESS_END: Address = Address(0xFFFF);
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pub static STACK_ADDRESS_BEGIN: Address = Address(0x0100);
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pub static STACK_ADDRESS_END: Address = Address(0x01FF);
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pub static IRQ_INTERRUPT_VECTOR_LO: Address = Address(0xFFFE);
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pub static IRQ_INTERRUPT_VECTOR_HI: Address = Address(0xFFFF);
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// static MEMORY_SIZE: uint = MEMORY_ADDRESS_END - MEMORY_ADDRESS_BEGIN + 1;
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pub struct Memory {
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@ -29,39 +29,39 @@ use memory::STACK_ADDRESS_END;
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use util::{ BitFlag, Off, On };
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pub struct Status {
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pub carry: BitFlag,
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pub zero: BitFlag,
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pub interrupt: BitFlag,
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pub decimal_mode: BitFlag,
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pub brk: BitFlag,
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pub unused: BitFlag,
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pub overflow: BitFlag,
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pub negative: BitFlag
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pub carry: BitFlag,
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pub zero: BitFlag,
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pub disable_interrupts: BitFlag,
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pub decimal_mode: BitFlag,
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pub brk: BitFlag,
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pub unused: BitFlag,
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pub overflow: BitFlag,
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pub negative: BitFlag
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}
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impl Status {
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pub fn to_byte(&self) -> u8 {
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self.carry.to_bit() << 0
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| self.zero.to_bit() << 1
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| self.interrupt.to_bit() << 2
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| self.decimal_mode.to_bit() << 3
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| self.brk.to_bit() << 4
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| self.unused.to_bit() << 5
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| self.overflow.to_bit() << 6
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| self.negative.to_bit() << 7
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self.carry.to_bit() << 0
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| self.zero.to_bit() << 1
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| self.disable_interrupts.to_bit() << 2
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| self.decimal_mode.to_bit() << 3
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| self.brk.to_bit() << 4
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| self.unused.to_bit() << 5
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| self.overflow.to_bit() << 6
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| self.negative.to_bit() << 7
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}
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pub fn new() -> Status {
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// TODO akeeton: Revisit these defaults.
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Status {
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carry: Off,
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zero: Off,
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interrupt: Off,
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decimal_mode: Off,
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brk: Off,
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unused: On,
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overflow: Off,
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negative: Off
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carry: Off,
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zero: Off,
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disable_interrupts: On,
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decimal_mode: Off,
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brk: Off,
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unused: On,
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overflow: Off,
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negative: Off
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}
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}
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}
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