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# -*- coding: utf-8 -*-
#
# AWL simulator - instructions
#
# Copyright 2012-2013 Michael Buesch <m@bues.ch>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
from awlsim.instructions.main import *
class AwlInsn_UW(AwlInsn):
def __init__(self, cpu, rawInsn):
AwlInsn.__init__(self, cpu, AwlInsn.TYPE_UW, rawInsn)
self.assertOpCount((0, 1))
if self.ops:
self.ops[0].assertType(AwlOperator.IMM, 0, 0xFFFF)
def run(self):
s = self.cpu.statusWord
accu1 = self.cpu.accu1.getWord()
if self.ops:
accu2 = self.ops[0].value
else:
accu2 = self.cpu.accu2.getWord()
accu1 &= accu2
self.cpu.accu1.setWord(accu1)
s.A1 = 1 if accu1 else 0
s.A0, s.OV = 0, 0
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