Apple-2-Tools/applepy
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don't allow writes to ROM area (this caused the ][+ ROM to hang on boot)

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This commit is contained in:
Greg Hewgill 2011-08-07 21:29:24 +12:00
parent 108ebd3769
commit 56e82f7cb6
1 changed files with 6 additions and 2 deletions
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8
applepy.py
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@ -31,10 +31,14 @@ class Memory:
self.__mem[0xC000] = self.__mem[0xC000] & 0x7F # clear keyboard
return self.__mem[address]
def write_byte_io(self, address, value):
self.__mem[address] = value
def write_byte(self, address, value):
if 0x400 <= address < 0x800:
self.write_screen(address, value)
self.__mem[address] = value
if address < 0xC000:
self.__mem[address] = value
def read_word(self, address):
return self.read_byte(address) + (self.read_byte(address + 1) << 8)
@ -298,7 +302,7 @@ class CPU:
elif key == 0x7F:
key = 0x8
# win.addstr(15, 50, hex(key))
self.memory.write_byte(0xC000, 0x80 + key)
self.memory.write_byte_io(0xC000, 0x80 + key)
except curses.error:
pass
except TypeError: