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a working inject_asm implementation

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Bryan Bishop 2013-11-10 15:19:15 -06:00
parent cab54cc723
commit e700c37844
1 changed files with 6 additions and 6 deletions
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12
pokemontools/vba/vba.py
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@ -187,7 +187,7 @@ class crystal(object):
return addresses
def inject_asm(self, asm, address=0xc6d4):
def inject_asm(self, asm=[], address=0xdfcf):
"""
Writes asm to memory. Makes the emulator run the asm.
@ -198,7 +198,7 @@ class crystal(object):
The first byte at the given address is reserved for whether the asm has
finished executing.
"""
memory = self.vba.memory
memory = list(self.vba.memory)
# the first byte is reserved for whether the script has finished
has_finished = address
@ -216,10 +216,10 @@ class crystal(object):
0xf5,
# ld a, 1
0xfa, 1,
0x3e, 1,
# ld [has_finished], a
0x77, has_finished & 0xff, has_finished >> 8,
0xea, has_finished & 0xff, has_finished >> 8,
# pop af
0xf1,
@ -229,7 +229,7 @@ class crystal(object):
]
# append the last opcodes to the script
asm.extend(set_has_finished)
asm = bytearray(asm) + bytearray(set_has_finished)
memory[script_address : script_address + len(asm)] = asm
self.vba.memory = memory
@ -238,7 +238,7 @@ class crystal(object):
self.call(script_address, bank=0)
# make the emulator step forward
self.vba.step(count=1)
self.vba.step(count=50)
# check if the script has executed
# TODO: should this raise an exception if the script didn't finish?