applepy/applepy_curses.py

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# ApplePy - an Apple ][ emulator in Python
# James Tauber / http://jtauber.com/
# originally written 2001, updated 2011
import curses
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import socket
import struct
import subprocess
import sys
kbd = 0
def write_screen(win, address, value):
base = address - 0x400
hi, lo = divmod(base, 0x80)
row_group, column = divmod(lo, 0x28)
row = hi + 8 * row_group
# skip if writing to row group 3
if row_group == 3:
return
c = chr(0x20 + ((value + 0x20) % 0x40))
if value < 0x40:
attr = curses.A_DIM
elif value < 0x80:
attr = curses.A_REVERSE
elif value < 0xA0:
attr = curses.A_UNDERLINE
else:
attr = curses.A_DIM
try:
win.addch(row, column, c, attr)
except curses.error:
pass
def read(addr, val):
global kbd
if addr == 0xC000:
return kbd
elif addr == 0xC010:
kbd = kbd & 0x7F
return 0x00
def write(win, addr, val):
if 0x400 <= addr <= 0x800:
write_screen(win, addr, val)
def run(win):
global kbd
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listener = socket.socket()
listener.bind(("127.0.0.1", 0))
listener.listen(0)
args = [
sys.executable,
"cpu6502.py",
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"--bus", str(listener.getsockname()[1]),
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"--rom", options.rom,
]
p = subprocess.Popen(args)
cpu, _ = listener.accept()
win.clear()
curses.noecho()
win.nodelay(True)
while True:
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op = cpu.recv(8)
cycle, rw, addr, val = struct.unpack("<IBHB", op)
if rw == 0:
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cpu.send(chr(read(addr, val)))
elif rw == 1:
write(win, addr, val)
else:
break
try:
key = ord(win.getkey())
if key == 0xA:
key = 0xD
elif key == 0x7F:
key = 0x8
# win.addstr(15, 50, hex(key))
kbd = 0x80 | key
except curses.error:
pass
except TypeError:
pass
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def usage():
print >>sys.stderr, "ApplePy - an Apple ][ emulator in Python"
print >>sys.stderr, "James Tauber / http://jtauber.com/"
print >>sys.stderr
print >>sys.stderr, "Usage: applepy_curses.py [options]"
print >>sys.stderr
print >>sys.stderr, " -R, --rom ROM file to use (default A2ROM.BIN)"
sys.exit(1)
def get_options():
class Options:
def __init__(self):
self.rom = "A2ROM.BIN"
options = Options()
a = 1
while a < len(sys.argv):
if sys.argv[a].startswith("-"):
if sys.argv[a] in ("-R", "--rom"):
a += 1
options.rom = sys.argv[a]
else:
usage()
else:
usage()
a += 1
return options
if __name__ == "__main__":
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options = get_options()
curses.wrapper(run)