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# -*- coding: utf-8 -*-
#
# AWL simulator - instructions
#
# Copyright 2012-2018 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 __future__ import division, absolute_import, print_function, unicode_literals
#from awlsim.common.cython_support cimport * #@cy
from awlsim.common.compat import *
from awlsim.common.exceptions import *
from awlsim.core.instructions.main import * #+cimport
from awlsim.core.operatortypes import * #+cimport
from awlsim.core.operators import * #+cimport
class AwlInsn_MI_I(AwlInsn): #+cdef
__slots__ = ()
def __init__(self, cpu, rawInsn=None, **kwargs):
AwlInsn.__init__(self, cpu, AwlInsn.TYPE_MI_I, rawInsn, **kwargs)
self.assertOpCount(0)
def run(self): #+cdef
#@cy cdef S7StatusWord s
#@cy cdef uint16_t diffTrunc
#@cy cdef int32_t diff
s = self.cpu.statusWord
diff = self.cpu.accu2.getSignedWord()
diff -= self.cpu.accu1.getSignedWord()
self.cpu.accu1.setWord(diff)
if self.cpu.is4accu:
self.cpu.accu2.copyFrom(self.cpu.accu3)
self.cpu.accu3.copyFrom(self.cpu.accu4)
diffTrunc = diff & 0xFFFF #@nocy
#@cy diffTrunc = <uint16_t>diff
if diffTrunc == 0:
s.A1, s.A0, s.OV = 0, 0, 0
elif diffTrunc & 0x8000: #+suffix-u
s.A1, s.A0, s.OV = 0, 1, 0
else:
s.A1, s.A0, s.OV = 1, 0, 0
if diff > 0x7FFF or diff < -32768:
s.OV, s.OS = 1, 1
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