84 lines
2.0 KiB
C
84 lines
2.0 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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#ident "$Id: enables.c,v 1.1 2000/12/09 01:17:38 steve Exp $"
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# include <ivl_target.h>
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# include <assert.h>
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# include "priv.h"
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/*
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* Given a pin index, look at the nexus for a bufif device that is
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* driving it, if any.
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*/
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static void absorb_pad_enable(unsigned idx)
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{
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unsigned ndx;
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ivl_nexus_t nex = bind_pin[idx].nexus;
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for (ndx = 0 ; ndx < ivl_nexus_ptrs(nex) ; ndx += 1) {
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unsigned pin;
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ivl_nexus_ptr_t ptr = ivl_nexus_ptr(nex, ndx);
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ivl_net_logic_t log = ivl_nexus_ptr_log(ptr);
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if (log == 0)
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continue;
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pin = ivl_nexus_ptr_pin(ptr);
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assert(pin == 0);
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switch (ivl_logic_type(log)) {
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case IVL_LO_BUFIF0:
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case IVL_LO_BUFIF1:
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assert(bind_pin[idx].enable == 0);
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bind_pin[idx].enable = log;
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break;
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default:
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}
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}
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}
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void absorb_pad_enables(void)
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{
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unsigned idx;
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for (idx = 0 ; idx < pins ; idx += 1) {
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if (bind_pin[idx].sop == 0)
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continue;
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if (bind_pin[idx].nexus == 0)
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continue;
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absorb_pad_enable(idx);
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}
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}
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/*
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* $Log: enables.c,v $
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* Revision 1.1 2000/12/09 01:17:38 steve
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* Add the pal loadable target.
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*
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*/
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