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- /*
- ** printed circuit board autorouter, Copyright (C) Randy Nevin 1989.
- **
- ** you may give this software to anyone, make as many copies as you like, and
- ** post it on public computer bulletin boards and file servers. you may not
- ** sell it or charge any fee for distribution (except for media and postage),
- ** remove this comment or the copyright notice from the code, or claim that
- ** you wrote this code or anything derived from it. you may modify the code as
- ** much as you want (please document clearly with comments, and maintain the
- ** coding style), but programs which are derived from this one are subject to
- ** the conditions stated here. i am providing this code so that people can
- ** learn from it, so if you distribute it, please include source code, not
- ** just executables. contact me to report bugs or suggest enhancements; i do
- ** not guarantee support, but i will make an effort in good faith to help you,
- ** and i want to act as a central clearing house for future versions. you
- ** should contact me before undertaking a significant development effort, to
- ** avoid reinventing the wheel. if you come up with an enhancement you
- ** consider particularly useful, i would appreciate being informed so that it
- ** can be incorporated in future versions. my address is: Randy Nevin,
- ** 1731 211th PL NE, Redmond, WA 98053. this code is available directly from
- ** the author; just send a floppy and a self-addressed floppy mailer with
- ** sufficient postage.
- **
- ** HISTORY
- ** (name date description)
- ** ----------------------------------------------------
- ** randy nevin 2/1/89 initial version
- ** randy nevin 2/4/89 made retrace table driven, instead of
- ** doubly-nested switch statements.
- ** randy nevin 2/4/89 changed dir from int to char (cut
- ** storage for it in half).
- ** randy nevin 2/8/89 changed SetQueue and ReSetQueue to
- ** give priority to goal nodes.
- ** randy nevin 2/11/89 don't output incremental search
- ** results if stdout is redirected.
- ** randy nevin 2/11/89 released version 1.00
- */
-
- #include <stdio.h>
- #include <stdlib.h>
- #include <io.h>
- #include <time.h>
- #include <string.h>
- #include "cell.h"
-
- /*
- ** if you run out of memory while routing large boards, there are two things
- ** you can do: (1) go into your config.sys file and disable everything you
- ** don't need. getting rid of things like ansi.sys, ramdisks, disk caches, and
- ** other terminate and stay resident (tsr) programs can free a lot of memory.
- ** (2) link the router, inspect the .map file, relink with the /CPARMAXALLOC:n
- ** switch, where n is calculated to allow for a near heap of about 5k. read
- ** the linker documentation before you do this. for me, the route.map file
- ** says the program needs 81EFh bytes. to this i add 1400h (5k) for a near
- ** heap to get 95EFh bytes or 95Fh paragraphs, which is 2399 decimal.
- */
-
- int justboard = 0; /* need all data structures, not just the board */
-
- extern void Initialize( FILE * );
- extern void Solve( void );
- extern void Report( FILE * );
-
- void main( int, char *[] );
-
- void main ( argc, argv ) /* input board, route traces, output routed board */
- int argc;
- char *argv[];
- {
- char *self, *p;
- FILE *fin, *fout;
- long start, stop;
-
- printf( "Copyright (C) Randy Nevin, 1989. Version 1.00\n" );
- printf( "See source code for rights granted.\n\n" );
- start = time( NULL );
- self = argv[0];
- /* get rid of initial part of path */
- if ((p = strrchr( self, '\\' )) || (p = strrchr( self, ':' )))
- self = ++p;
- if (argc != 3) { /* need infile and outfile */
- printf( "usage: %s infile outfile\n", self );
- exit( -1 );
- }
- if (!(fin = fopen( argv[1], "r" ))) {
- printf( "can't open %s\n", argv[1] );
- exit( -1 );
- }
- if (!(fout = fopen( argv[2], "wb" ))) {
- printf( "can't open %s\n", argv[2] );
- exit( -1 );
- }
- Initialize( fin );
- Solve();
- Report( fout );
- stop = time( NULL ) - start;
- printf( "time = %ld second%s\n", stop, (stop == 1) ? "" : "s" );
- exit( 0 );
- }
-