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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_U(AwlInsn):
def __init__(self, cpu, rawInsn):
AwlInsn.__init__(self, cpu, AwlInsn.TYPE_U, rawInsn)
self.assertOpCount(1)
def run(self):
s, STA = self.cpu.statusWord,\
self.cpu.fetch(self.ops[0], (1,))
if s.NER:
s.STA, s.VKE = STA, ((s.VKE & STA) | s.OR)
else:
s.STA, s.VKE, s.NER = STA, STA, 1
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