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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_DTB(AwlInsn):
def __init__(self, cpu, rawInsn):
AwlInsn.__init__(self, cpu, AwlInsn.TYPE_DTB, rawInsn)
self.assertOpCount(0)
def run(self):
s = self.cpu.statusWord
binval, bcd = dwordToSignedPyInt(self.cpu.accu1.get()), 0
if binval < 0:
bcd |= 0xF0000000
binval = abs(binval)
if binval > 9999999:
s.OV, s.OS = 1, 1
return
bcd |= binval % 10
bcd |= ((binval // 10) % 10) << 4
bcd |= ((binval // 100) % 10) << 8
bcd |= ((binval // 1000) % 10) << 12
bcd |= ((binval // 10000) % 10) << 16
bcd |= ((binval // 100000) % 10) << 20
bcd |= ((binval // 1000000) % 10) << 24
self.cpu.accu1.set(bcd)
s.OV = 0
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