folkert/python-pdp1170
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cleanups

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This commit is contained in:
Neil Webber 2024-10-24 08:17:06 -05:00
parent b4ac71c3b9
commit 58a45b0813
1 changed files with 9 additions and 6 deletions
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15
kl11.py
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@ -25,17 +25,19 @@
# There are two modes of operation: socket or stdin. # There are two modes of operation: socket or stdin.
# #
# socket: In socket mode, this starts a simple TCP server and accepts # socket: In socket mode, this starts a simple TCP server and accepts
# connections on port 1170 (cute). Characters a proxied back # connections on port 1170 (cute). Characters are proxied back
# and forth from this socket to the emulated console # and forth from this socket to the emulated console
# #
# stdin: In stdin mode, python's stdin is usurped and put into raw mode. # stdin: In stdin mode, python's stdin is usurped and put into raw mode.
# The python console is the emulated console. This mode # The python console is the emulated console. This mode
# requires termios ("unix only" but may exist on other systems) # requires termios ("unix only" but may exist on other systems)
# #
# In this mode there will be no way to kill/exit the emulation unless # In this mode the normal ^C/SIGINT does nothing because in raw
# the running code halts. Alternatively, the input byte sequence: # mode there are no special characters; everything is passed to
# the emulated environment. The only way to exit/stop the emulator is
# if the running code halts. Alternatively, the input byte sequence:
# 0xC3 0xA7 # 0xC3 0xA7
# which is Unicode U+00E7, c--cedilla, will cause the emulation to # which is Unicode U+00E7, c-cedilla, will cause the emulation to
# halt as if the physical console HALT toggle had been selected. # halt as if the physical console HALT toggle had been selected.
# This sequence was chosen because it is option-C on a mac; see # This sequence was chosen because it is option-C on a mac; see
# HALT_SEQUENCE # HALT_SEQUENCE
@ -79,6 +81,7 @@ class KL11:
SERVERPORT = 1170 SERVERPORT = 1170
HALT_SEQUENCE = bytes((0xc3, 0xa7)) HALT_SEQUENCE = bytes((0xc3, 0xa7))
# HALT_SEQUENCE = bytes((0x05,)) # this will do ^E to exit, like SIMH
def __init__(self, ub, /, *, baseaddr=KL11_DEFAULT, def __init__(self, ub, /, *, baseaddr=KL11_DEFAULT,
send_telnet=False, use_stdin=False): send_telnet=False, use_stdin=False):
@ -234,7 +237,7 @@ class KL11:
def _outloop(q, outf): def _outloop(q, outf):
while True: while True:
try: try:
c = q.get(True, timeout=2) c = q.get()
if c is self._SHUTDOWN_SENTINEL: if c is self._SHUTDOWN_SENTINEL:
break break
except queue.Empty: except queue.Empty:
@ -293,7 +296,7 @@ class KL11:
def _outloop(q, s): def _outloop(q, s):
while True: while True:
try: try:
c = q.get(True, timeout=2) c = q.get()
if c is self._SHUTDOWN_SENTINEL: if c is self._SHUTDOWN_SENTINEL:
break break
except queue.Empty: except queue.Empty: