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Finish adding non-branch instructions

master
Forest Belton 3 years ago
parent
commit
72803b155f
2 changed files with 212 additions and 0 deletions
  1. +6
    -0
      gbso/cpu.py
  2. +206
    -0
      gbso/insn.py

+ 6
- 0
gbso/cpu.py View File

@ -30,3 +30,9 @@ class CPU:
def set_mem16(self, nn: int, nn1: int) -> None:
pass
def deref_hl(self) -> int:
return self.get_mem8(self.get_reg16(R16.HL))
def deref_hl_set(self, n: int) -> None:
self.set_mem8(self.get_reg16(R16.HL), n)

+ 206
- 0
gbso/insn.py View File

@ -35,6 +35,9 @@ class LD_R_N8(Insn):
def exec(self, cpu: CPU) -> None:
cpu.set_reg8(self.dst, self.imm)
def pretty(self) -> str:
return f"LD {self.dst}, {hex(self.imm)}"
@dataclass
class LD_R_HL(Insn):
@ -43,6 +46,9 @@ class LD_R_HL(Insn):
def exec(self, cpu: CPU) -> None:
cpu.set_reg8(self.dst, cpu.get_mem8(cpu.get_reg16(R16.HL)))
def pretty(self) -> str:
return f"LD {self.dst}, (HL)"
@dataclass
class LD_HL_R(Insn):
@ -51,6 +57,9 @@ class LD_HL_R(Insn):
def exec(self, cpu: CPU) -> None:
cpu.set_mem8(cpu.get_reg16(R16.HL), cpu.get_reg8(self.src))
def pretty(self) -> str:
return f"LD (HL), {self.src}"
@dataclass
class LD_HL_N(Insn):
@ -68,12 +77,18 @@ class LD_A_BC(Insn):
def exec(self, cpu: CPU) -> None:
cpu.set_reg8(R8.A, cpu.get_mem8(cpu.get_reg16(R16.BC)))
def pretty(self) -> str:
return "LD A, (BC)"
@dataclass
class LD_A_DE(Insn):
def exec(self, cpu: CPU) -> None:
cpu.set_reg8(R8.A, cpu.get_mem8(cpu.get_reg16(R16.DE)))
def pretty(self) -> str:
return "LD A, (DE)"
@dataclass
class LD_A_NN(Insn):
@ -82,6 +97,9 @@ class LD_A_NN(Insn):
def exec(self, cpu: CPU) -> None:
cpu.set_reg8(R8.A, cpu.get_mem8(self.nn))
def pretty(self) -> str:
return f"LD A, ({hex(self.nn)})"
@dataclass
class LD_BC_A(Insn):
@ -542,6 +560,194 @@ class RRA(Insn):
return "RRA"
@dataclass
class RLC_R(Insn):
r: R8
def exec(self, cpu: CPU) -> None:
r = cpu.get_reg8(self.r)
cpu.carry = (r >> 7) & 1
cpu.set_reg8(self.r, ((r << 1) & 0xFF) | cpu.carry)
def pretty(self) -> str:
return f"RLC {self.r}"
@dataclass
class RLC_HL(Insn):
def exec(self, cpu: CPU) -> None:
hl = cpu.deref_hl()
cpu.carry = (hl >> 7) & 1
cpu.deref_hl_set(((hl << 1) & 0xFF) | cpu.carry)
def pretty(self) -> str:
return f"RLC (HL)"
@dataclass
class RL_R(Insn):
r: R8
def exec(self, cpu: CPU) -> None:
r = cpu.get_reg8(self.r)
next_carry = (r >> 7) & 1
cpu.set_reg8(self.r, ((r << 1) & 0xFF) | cpu.carry)
cpu.carry = next_carry
def pretty(self) -> str:
return f"RL {self.r}"
@dataclass
class RL_HL(Insn):
def exec(self, cpu: CPU) -> None:
hl = cpu.deref_hl()
next_carry = (hl >> 7) & 1
cpu.deref_hl_set(((hl << 1) & 0xFF) | cpu.carry)
cpu.carry = next_carry
def pretty(self) -> str:
return "RL (HL)"
@dataclass
class RRC_R(Insn):
r: R8
def exec(self, cpu: CPU) -> None:
r = cpu.get_reg8(self.r)
cpu.carry = r & 1
cpu.set_reg8(self.r, (r >> 1) | (cpu.carry << 7))
def pretty(self) -> str:
return f"RRC {self.r}"
@dataclass
class RRC_HL(Insn):
def exec(self, cpu: CPU) -> None:
hl = cpu.deref_hl()
cpu.carry = hl & 1
cpu.deref_hl_set((hl >> 1) | (cpu.carry << 7))
def pretty(self) -> str:
return "RRC (HL)"
@dataclass
class RR_R(Insn):
r: R8
def exec(self, cpu: CPU) -> None:
r = cpu.get_reg8(self.r)
next_carry = r & 1
cpu.set_reg8(self.r, (r >> 1) | (cpu.carry << 7))
cpu.carry = next_carry
def pretty(self) -> str:
return f"RR {self.r}"
@dataclass
class RR_HL(Insn):
def exec(self, cpu: CPU) -> None:
hl = cpu.deref_hl()
next_carry = hl & 1
cpu.deref_hl_set((hl >> 1) | (cpu.carry << 7))
cpu.carry = next_carry
def pretty(self) -> str:
return "RR (HL)"
@dataclass
class SLA_R(Insn):
r: R8
def exec(self, cpu: CPU) -> None:
r = cpu.get_reg8(self.r)
cpu.set_reg8(self.r, (r << 1) & 0xFF)
def pretty(self) -> str:
return f"SLA {self.r}"
@dataclass
class SLA_HL(Insn):
def exec(self, cpu: CPU) -> None:
hl = cpu.deref_hl()
cpu.deref_hl_set((hl << 1) & 0xFF)
def pretty(self) -> str:
return "SLA (HL)"
@dataclass
class SWAP_R(Insn):
r: R8
def exec(self, cpu: CPU) -> None:
r = cpu.get_reg8(self.r)
cpu.set_reg8(self.r, ((r << 4) & 0xFF) | (r >> 4))
def pretty(self) -> str:
return f"SWAP {self.r}"
@dataclass
class SWAP_HL(Insn):
def exec(self, cpu: CPU) -> None:
hl = cpu.deref_hl()
cpu.deref_hl_set(((hl << 4) & 0xFF) | (hl >> 4))
def pretty(self) -> str:
return "SWAP (HL)"
@dataclass
class SRA_R(Insn):
r: R8
def exec(self, cpu: CPU) -> None:
r = cpu.get_reg8(self.r)
cpu.set_reg8(self.r, (r >> 1) | (r & (1 << 7)))
def pretty(self) -> str:
return f"SRA {self.r}"
@dataclass
class SRA_HL(Insn):
def exec(self, cpu: CPU) -> None:
hl = cpu.deref_hl()
cpu.deref_hl_set((hl >> 1) | (hl & (1 << 7)))
def pretty(self) -> str:
return "SRA (HL)"
@dataclass
class SRL_R(Insn):
r: R8
def exec(self, cpu: CPU) -> None:
r = cpu.get_reg8(self.r)
cpu.set_reg8(self.r, r >> 1)
def pretty(self) -> str:
return f"SRL {self.r}"
@dataclass
class SRL_HL(Insn):
def exec(self, cpu: CPU) -> None:
hl = cpu.deref_hl()
cpu.deref_hl_set(hl >> 1)
def pretty(self) -> str:
return "SRL (HL)"
# TODO: Remaining rotate and shift instructions

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