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130 MIDI Tool Box
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130 MIDI Tool Box.iso
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mcccfg
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mcccfg.c
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1988-01-29
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3KB
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84 lines
/*===================================*/
/* */
/* MCC Configuration File Access */
/* */
/* Reads the file MQ.CFG to */
/* determine the inerreupt level and */
/* base I/O address assigned to the */
/* MCC. */
/* */
/* This module can be used to write */
/* an MCC application that works */
/* in harmony with the rest of the */
/* MIDI Starter System. */
/* */
/* Copyright (c) 1988 */
/* By Music Quest, Inc. */
/* */
/* Public Domain */
/* Subject to the same usage */
/* requirements as the ToolKit. */
/* */
/*===================================*/
#define CONFIG "MQ.CFG"
#include "fcntl.h"
#include "stat.h"
struct pro_data /* MQ.CFG structure */
{
int level; /* interrupt level index */
int addr; /* card address index */
};
struct pro_data p = {2,0x330}; /* default = irq2, 330 */
/*===================================*/
/* Configure the card */
/* */
/* Reads the MQ.CFG file. Installs */
/* the ToolKit according to the */
/* current configuration. */
/* */
/* Returned values */
/* 0 = MCC not found or installed */
/* 1 = ToolKit installed. */
/* */
/*===================================*/
mcc_config()
{
int fx;
if ((fx=open(CONFIG,O_RDONLY|O_BINARY)) >= 0) /* open config file */
{
read(fx,&p,sizeof(p)); /* read the IRQ and address */
close(fx);
}
return(mcc_open(p.addr,p.level)); /* initialize MCC */
}
/*===================================*/
/* DeConfigure the card */
/*===================================*/
mcc_deconfig()
{
mcc_close();
}
/*===================================*/
/* Returns the base I/O address */
/*===================================*/
mcc_addr()
{
return(p.addr);
}
/*===================================*/
/* Returns the current IRQ number */
/*===================================*/
mcc_level()
{
return(p.level);
}