6502/py65
1
0
Fork 0
mirror of https://github.com/mnaberez/py65.git synced 2024-06-14 13:29:28 +00:00
Code Issues Projects Releases Wiki Activity

Fix 65C02 opcode 0x7A

Browse Source
This commit is contained in:
Mike Naberezny 2012-02-08 10:58:52 -08:00
parent 5973533e11
commit ac8962ea10
2 changed files with 11 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
CHANGES.txt
View File

@ -3,6 +3,10 @@
- Fixed a bug that caused ``help cd`` to raise an exception
in the monitor.
- Fixed a bug in the 65C02 simulation where the opcode 0x7A
was named "PHY" instead of "PLY", causing incorrect assembly
and disassembly. Thanks to Brian Cassidy for reporting it.
0.11 (2012-01-07)
- Added a new 65Org16 MPU simulation written by Ed Spittles.

14
src/py65/devices/mpu65c02.py
View File

@ -1,4 +1,4 @@
from py65.devices import mpu6502
from py65.devices import mpu6502
from py65.utils.devices import make_instruction_decorator
class MPU(mpu6502.MPU):
@ -20,7 +20,7 @@ class MPU(mpu6502.MPU):
extracycles = mpu6502.MPU.extracycles[:]
disassemble = mpu6502.MPU.disassemble[:]
instruction = make_instruction_decorator(instruct, disassemble,
instruction = make_instruction_decorator(instruct, disassemble,
cycletime, extracycles)
# addressing modes
@ -46,7 +46,7 @@ class MPU(mpu6502.MPU):
def opTSB(self, x):
address = x()
m = self.memory[address]
m = self.memory[address]
self.p &= ~self.ZERO
z = m & self.a
if z != 0:
@ -55,7 +55,7 @@ class MPU(mpu6502.MPU):
def opTRB(self, x):
address = x()
m = self.memory[address]
m = self.memory[address]
self.p &= ~self.ZERO
z = m & self.a
if z != 0:
@ -68,7 +68,7 @@ class MPU(mpu6502.MPU):
def inst_0x07(self):
self.opRMB(self.ZeroPageAddr, 0xFE)
self.pc += 1
@instruction(name="ORA", mode="zpi", cycles=5)
def inst_0x12(self):
self.opORA(self.ZeroPageIndirectAddr)
@ -143,10 +143,10 @@ class MPU(mpu6502.MPU):
self.opSTZ(self.ZeroPageXAddr)
self.pc += 1
@instruction(name="PHY", mode="imp", cycles=4)
@instruction(name="PLY", mode="imp", cycles=4)
def inst_0x7a(self):
self.y = self.stPop()
self.FlagsNZ(self.y)
self.FlagsNZ(self.y)
@instruction(name="RMB7", mode="zpg", cycles=5)
def inst_0x77(self):