100 lines
2.7 KiB
C
100 lines
2.7 KiB
C
/*
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THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
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SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
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END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
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ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
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IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
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SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
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FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
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CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
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AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
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COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
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*/
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#pragma off (unreferenced)
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static char rcsid[] = "$Id: coindev.c,v 1.1.1.1 2001-01-19 03:30:05 bradleyb Exp $";
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#pragma on (unreferenced)
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#include <stdio.h>
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#include <dos.h>
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#include <conio.h>
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#include "coindev.h"
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int CoinMechPort[3] = { COINMECH1_PORT,
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COINMECH2_PORT,
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COINMECH3_PORT };
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int CoinMechCtrl[3] = { COINMECH1_CTRLMASK,
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COINMECH2_CTRLMASK,
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COINMECH3_CTRLMASK };
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unsigned int CoinMechLastCnt[3];
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int coindev_init(CoinMechNumber)
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{
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int x;
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int CoinMechAdj[3] = { COINMECH1_ADJMASK,
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COINMECH2_ADJMASK,
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COINMECH3_ADJMASK };
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/* set up IO port for our special use */
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outp(COINMECH_CMDPORT, CoinMechCtrl[CoinMechNumber]);
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outp(CoinMechPort[CoinMechNumber], 0);
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outp(CoinMechPort[CoinMechNumber], 0);
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/* write to the IO board so that the counter eventually gets cleared */
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for( x = 10; x > 0; x-- )
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{
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outp(COINMECH_ADJPORT, CoinMechAdj[CoinMechNumber]);
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outp(COINMECH_ADJPORT, 0);
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if( coindev_read(CoinMechNumber) == 0 )
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{
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break;
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}
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}
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CoinMechLastCnt[CoinMechNumber] = 0;
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return(x); /* TRUE == CoinMech is cleared; FALSE == CoinMech error! */
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}
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/* Do a raw read of the specified CoinMech */
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unsigned int coindev_read(CoinMechNumber)
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{
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unsigned int x;
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/* read lower byte, then upper byte */
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x = (inp(CoinMechPort[CoinMechNumber]));
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x += (inp(CoinMechPort[CoinMechNumber]) * 256);
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/* conver to usable number */
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if( x )
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{
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x = (65536L - x);
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}
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return(x);
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}
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/* read the specified CoinMech and return the */
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/* ...number of clicks since the last read */
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unsigned int coindev_count(CoinMechNumber)
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{
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unsigned int x, y;
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x = coindev_read(CoinMechNumber);
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y = x - CoinMechLastCnt[CoinMechNumber];
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CoinMechLastCnt[CoinMechNumber] = x;
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return(y);
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}
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