diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mos6502.rs | 213 |
1 files changed, 106 insertions, 107 deletions
diff --git a/src/mos6502.rs b/src/mos6502.rs index 94de974..f8f890f 100644 --- a/src/mos6502.rs +++ b/src/mos6502.rs @@ -146,112 +146,111 @@ pub mod disasm { } } - mod ops { - use mos6502::CPU; - make_optable!(OPS, fn (&mut CPU)); - - fn adc(cpu: &mut CPU) {} - fn and(cpu: &mut CPU) {} - fn asl(cpu: &mut CPU) {} - fn bcc(cpu: &mut CPU) {} - fn bcs(cpu: &mut CPU) {} - fn beq(cpu: &mut CPU) {} - fn bit(cpu: &mut CPU) {} - fn bmi(cpu: &mut CPU) {} - fn bne(cpu: &mut CPU) {} - fn bpl(cpu: &mut CPU) {} - fn brk(cpu: &mut CPU) {} - fn bvc(cpu: &mut CPU) {} - fn bvs(cpu: &mut CPU) {} - fn clc(cpu: &mut CPU) {} - fn cld(cpu: &mut CPU) {} - fn cli(cpu: &mut CPU) {} - fn clv(cpu: &mut CPU) {} - fn cmp(cpu: &mut CPU) {} - fn cpx(cpu: &mut CPU) {} - fn cpy(cpu: &mut CPU) {} - fn dec(cpu: &mut CPU) {} - fn dex(cpu: &mut CPU) {} - fn dey(cpu: &mut CPU) {} - fn eor(cpu: &mut CPU) {} - fn inc(cpu: &mut CPU) {} - fn inx(cpu: &mut CPU) {} - fn iny(cpu: &mut CPU) {} - fn jmp(cpu: &mut CPU) {} - fn jsr(cpu: &mut CPU) {} - fn lda(cpu: &mut CPU) {} - fn ldx(cpu: &mut CPU) {} - fn ldy(cpu: &mut CPU) {} - fn lsr(cpu: &mut CPU) {} - fn nop(cpu: &mut CPU) {} - fn ora(cpu: &mut CPU) {} - fn pha(cpu: &mut CPU) {} - fn php(cpu: &mut CPU) {} - fn pla(cpu: &mut CPU) {} - fn plp(cpu: &mut CPU) {} - fn rol(cpu: &mut CPU) {} - fn ror(cpu: &mut CPU) {} - fn rti(cpu: &mut CPU) {} - fn rts(cpu: &mut CPU) {} - fn sbc(cpu: &mut CPU) {} - fn sec(cpu: &mut CPU) {} - fn sed(cpu: &mut CPU) {} - fn sei(cpu: &mut CPU) {} - fn sta(cpu: &mut CPU) {} - fn stx(cpu: &mut CPU) {} - fn sty(cpu: &mut CPU) {} - fn tax(cpu: &mut CPU) {} - fn tay(cpu: &mut CPU) {} - fn tsx(cpu: &mut CPU) {} - fn txa(cpu: &mut CPU) {} - fn txs(cpu: &mut CPU) {} - fn tya(cpu: &mut CPU) {} - fn nil(cpu: &mut CPU) {} - } - - mod addr { - use mos6502::CPU; - make_addrtable!(ADDR_MODES, fn (&mut CPU)); - - fn acc(cpu: &mut CPU) {} - fn imm(cpu: &mut CPU) {} - fn zpg(cpu: &mut CPU) {} - fn zpx(cpu: &mut CPU) {} - fn zpy(cpu: &mut CPU) {} - fn rel(cpu: &mut CPU) {} - fn abs(cpu: &mut CPU) {} - fn abx(cpu: &mut CPU) {} - fn aby(cpu: &mut CPU) {} - fn ind(cpu: &mut CPU) {} - fn xin(cpu: &mut CPU) {} - fn iny(cpu: &mut CPU) {} - fn nil(cpu: &mut CPU) {} - } - - pub trait VMem { - fn read(addr: u16) -> u8; - fn write(addr: u16, data: u8); - } - - pub struct CPU { - /* registers */ - a: u8, - x: u8, - y: u8, - status: u8, - pc: u8, - sp: u8, - /* internal state */ - ea: u16, /* effective address */ +mod ops { + use mos6502::CPU; + make_optable!(OPS, fn (&mut CPU)); + + fn adc(cpu: &mut CPU) {} + fn and(cpu: &mut CPU) {} + fn asl(cpu: &mut CPU) {} + fn bcc(cpu: &mut CPU) {} + fn bcs(cpu: &mut CPU) {} + fn beq(cpu: &mut CPU) {} + fn bit(cpu: &mut CPU) {} + fn bmi(cpu: &mut CPU) {} + fn bne(cpu: &mut CPU) {} + fn bpl(cpu: &mut CPU) {} + fn brk(cpu: &mut CPU) {} + fn bvc(cpu: &mut CPU) {} + fn bvs(cpu: &mut CPU) {} + fn clc(cpu: &mut CPU) {} + fn cld(cpu: &mut CPU) {} + fn cli(cpu: &mut CPU) {} + fn clv(cpu: &mut CPU) {} + fn cmp(cpu: &mut CPU) {} + fn cpx(cpu: &mut CPU) {} + fn cpy(cpu: &mut CPU) {} + fn dec(cpu: &mut CPU) {} + fn dex(cpu: &mut CPU) {} + fn dey(cpu: &mut CPU) {} + fn eor(cpu: &mut CPU) {} + fn inc(cpu: &mut CPU) {} + fn inx(cpu: &mut CPU) {} + fn iny(cpu: &mut CPU) {} + fn jmp(cpu: &mut CPU) {} + fn jsr(cpu: &mut CPU) {} + fn lda(cpu: &mut CPU) {} + fn ldx(cpu: &mut CPU) {} + fn ldy(cpu: &mut CPU) {} + fn lsr(cpu: &mut CPU) {} + fn nop(cpu: &mut CPU) {} + fn ora(cpu: &mut CPU) {} + fn pha(cpu: &mut CPU) {} + fn php(cpu: &mut CPU) {} + fn pla(cpu: &mut CPU) {} + fn plp(cpu: &mut CPU) {} + fn rol(cpu: &mut CPU) {} + fn ror(cpu: &mut CPU) {} + fn rti(cpu: &mut CPU) {} + fn rts(cpu: &mut CPU) {} + fn sbc(cpu: &mut CPU) {} + fn sec(cpu: &mut CPU) {} + fn sed(cpu: &mut CPU) {} + fn sei(cpu: &mut CPU) {} + fn sta(cpu: &mut CPU) {} + fn stx(cpu: &mut CPU) {} + fn sty(cpu: &mut CPU) {} + fn tax(cpu: &mut CPU) {} + fn tay(cpu: &mut CPU) {} + fn tsx(cpu: &mut CPU) {} + fn txa(cpu: &mut CPU) {} + fn txs(cpu: &mut CPU) {} + fn tya(cpu: &mut CPU) {} + fn nil(cpu: &mut CPU) {} +} + +mod addr { + use mos6502::CPU; + make_addrtable!(ADDR_MODES, fn (&mut CPU)); + + fn acc(cpu: &mut CPU) {} + fn imm(cpu: &mut CPU) {} + fn zpg(cpu: &mut CPU) {} + fn zpx(cpu: &mut CPU) {} + fn zpy(cpu: &mut CPU) {} + fn rel(cpu: &mut CPU) {} + fn abs(cpu: &mut CPU) {} + fn abx(cpu: &mut CPU) {} + fn aby(cpu: &mut CPU) {} + fn ind(cpu: &mut CPU) {} + fn xin(cpu: &mut CPU) {} + fn iny(cpu: &mut CPU) {} + fn nil(cpu: &mut CPU) {} +} + +pub trait VMem { + fn read(addr: u16) -> u8; + fn write(addr: u16, data: u8); +} + +pub struct CPU { + /* registers */ + a: u8, + x: u8, + y: u8, + status: u8, + pc: u8, + sp: u8, + /* internal state */ + ea: u16, /* effective address */ +} + +impl CPU { + fn step(&mut self, opcode: u8) { + ops::OPS[opcode as usize](self); + addr::ADDR_MODES[opcode as usize](self); } - - impl CPU { - fn step(&mut self, opcode: u8) { - ops::OPS[opcode as usize](self); - addr::ADDR_MODES[opcode as usize](self); - } - fn new() -> Self { - CPU{a: 0, x: 0, y: 0, status: 0, pc: 0, sp: 0, ea: 0} - } + fn new() -> Self { + CPU{a: 0, x: 0, y: 0, status: 0, pc: 0, sp: 0, ea: 0} } - +} |