105 lines
2.6 KiB
C++
105 lines
2.6 KiB
C++
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/*
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* Copyright (c) 2000 Stephen Williams (steve@icarus.com)
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*
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* This source code is free software; you can redistribute it
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* and/or modify it in source code form under the terms of the GNU
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* General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#if !defined(WINNT) && !defined(macintosh)
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#ident "$Id: vvm_memory.cc,v 1.1 2000/12/15 20:05:16 steve Exp $"
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#endif
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# include "vvm_signal.h"
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vvm_memory_t::vvm_memory_t()
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{
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cb_list_ = 0;
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}
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void vvm_memory_t::set_word(unsigned addr, const vvm_bitset_t&val)
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{
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if (addr >= size)
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return;
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unsigned base = width * addr;
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for (unsigned idx = 0 ; idx < width ; idx += 1)
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bits[base+idx] = val[idx];
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call_list_(addr);
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}
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void vvm_memory_t::set_word(unsigned addr, const vpip_bit_t*val)
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{
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if (addr >= size)
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return;
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unsigned base = width * addr;
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for (unsigned idx = 0 ; idx < width ; idx += 1)
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bits[base+idx] = val[idx];
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call_list_(addr);
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}
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void vvm_memory_t::get_word(unsigned addr, vvm_bitset_t&val) const
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{
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if (addr >= size) {
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for (unsigned idx = 0 ; idx < width ; idx += 1)
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val[idx] = StX;
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return;
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}
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unsigned base = width * addr;
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for (unsigned idx = 0 ; idx < width ; idx += 1)
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val[idx] = bits[base+idx];
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}
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void vvm_memory_t::set_callback(vvm_ram_callback*ram)
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{
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ram->next_ = cb_list_;
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cb_list_ = ram;
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}
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void vvm_memory_t::call_list_(unsigned idx)
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{
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for (vvm_ram_callback*cur = cb_list_; cur; cur = cur->next_)
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cur->handle_write(idx);
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}
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vvm_memory_t::assign_nb::assign_nb(vvm_memory_t&m, unsigned i,
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const vvm_bitset_t&v)
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: mem_(m), index_(i), bits_(new vpip_bit_t[m.width]), val_(bits_, m.width)
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{
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for (unsigned idx = 0 ; idx < m.width ; idx += 1)
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val_[idx] = v[idx];
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}
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vvm_memory_t::assign_nb::~assign_nb()
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{
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delete[]bits_;
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}
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void vvm_memory_t::assign_nb::event_function()
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{
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mem_.set_word(index_, val_);
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}
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/*
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* $Log: vvm_memory.cc,v $
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* Revision 1.1 2000/12/15 20:05:16 steve
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* Fix memory access in vvm. (PR#70)
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*
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*/
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