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err.c
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1995-04-12
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/******************************************************************************
File: err.c
Version: 1.02
Tab stops: every 2 columns
Project: any STK related code
Copyright: 1994-1995 DiamondWare, Ltd. All rights reserved.
Written: Keith Weiner & Erik Lorenzen
Purpose: Contains a routine to handle any error generated by the STK
History: 94/10/21 KW Started
95/02/21 EL Finalized for 1.00
95/03/18 EL Added new error to err_Display(), dws_BUSY
95/03/22 EL Finalized for 1.01
95/04/06 EL Added new error to err_Display(), dws_MUSTBECLI
95/04/11 EL moved DisplayError to err.c (err_Display).
Notes
-----
*Permission is expressely granted to use err_Display or any derivitive made
from it to registered users of the STK.
******************************************************************************/
#include <conio.h>
#include <stdio.h>
#include <stdlib.h>
#include "dws.h"
#include "err.h"
void err_Display(word errornum)
{
switch (errornum)
{
case dws_EZERO:
{
/*
. This should not have happened, considering how we got here!
*/
printf("I'm confused! Where am I? HOW DID I GET HERE????\n");
printf("The ERROR number is: %d\n",errornum);
break;
}
case dws_NOTINITTED:
{
/*
. If we get here, it means you haven't called dws_Init().
. The STK needs to initialize itself and the hardware before
. it can do anything.
*/
printf("The STK was not initialized\n");
break;
}
case dws_ALREADYINITTED:
{
/*
. If we get here, it means you've called dws_Init() already. Calling
. dws_DetectHardWare at this point would cause zillions of
. problems if we let the call through.
*/
printf("The STK was already initialized\n");
break;
}
case dws_NOTSUPPORTED:
{
/*
. If we get here, it means that either the user's machine does not
. support the function you just called, or the STK was told not to
. support it in dws_Init.
*/
printf("Function not supported\n");
break;
}
case dws_DetectHardware_UNSTABLESYSTEM:
{
/*
. Please report it to DiamondWare if you get here!
.
. Ideally, you would disable control-C here, so that the user can't
. hit control-alt-delete, causing SmartDrive to flush its (possibly
. currupt) buffers.
*/
printf("The system is unstable!\n");
printf("Please power down now!");
InfiniteLoop:
goto InfiniteLoop;
}
/*
. The following three errors are USER/PROGRAMMER errors. You forgot
. to fill the cardtyp struct full of -1's (except in those fields
. you intended to override, or the user (upon the unlikly event that
. the STK was unable to find a card) gave you a bad overide value.
*/
case dws_DetectHardware_BADBASEPORT:
{
/*
. You set dov.baseport to a bad value, or
. didn't fill it with a -1.
*/
printf("Bad port address\n");
break;
}
case dws_DetectHardware_BADDMA:
{
/*
. You set dov.digdma to a bad value, or
. didn't fill it with a -1.
*/
printf("Bad DMA channel\n");
break;
}
case dws_DetectHardware_BADIRQ:
{
/*
. You set dov.digirq to a bad value, or
. didn't fill it with a -1.
*/
printf("Bad IRQ level\n");
break;
}
case dws_Kill_CANTUNHOOKISR:
{
/*
. The STK points the interrupt vector for the sound card's IRQ
. to its own code in dws_Init.
.
. dws_Kill was unable to restore the vector to its original
. value because other code has hooked it after the STK
. initialized(!) This is really bad. Make the user get rid
. of it and call dws_Kill again.
*/
printf("Get rid of your TSR, pal!\n");
printf("(Press any key)\n");
getch();
break;
}
case dws_X_BADINPUT:
{
/*
. The mixer funtions can only accept volumes between 0 & 255,
. the volume will remain unchanged.
*/
printf("Bad mixer level\n");
break;
}
case dws_D_NOTADWD:
{
/* You passed the STK a pointer to something which is not a .DWD file! */
printf("The file you are attempting to play is not a .DWD\n");
break;
}
case dws_D_NOTSUPPORTEDVER:
{
/*
. The STK can't play a .DWD converted using a version of VOC2DWD.EXE
. newer than itself. And, although we'll try to maintain backwards
. compatibility, we may not be able to guarantee that newer versions
. of the code will be able to play older .DWD files. In any event,
. it's a good idea to always convert .VOC files with the utility
. which comes with the library you're linking into your application.
*/
printf("Please reconvert this file using the VOC2DWD.EXE which came with this library");
break;
}
case dws_D_INTERNALERROR:
{
/*
. This error should never occur and probably will not affect sound
. play(?). If it happens please contact DiamondWare.
*/
printf("An internal error has occured\nPlease contact DiamondWare\n");
break;
}
case dws_DPlay_NOSPACEFORSOUND:
{
/*
. This error is more like a warning, though it may happen on a
. regular basis, depending on how many sounds you told the STK
. to allow in dws_Init, how you chose to prioritize sounds and
. how many sounds are currently being played.
*/
printf("No more room for new digitized sounds right now\n");
break;
}
case dws_DSetRate_FREQTOLOW:
{
/*
. The STK will set rate as close as possible to the indicated rate
. but cannot set a rate that low.
*/
printf("Playback frequency too low\n");
break;
}
case dws_DSetRate_FREQTOHIGH:
{
/*
. The STK will set rate as close as possible to the indicated rate
. but cannot set a rate that high.
*/
printf("Playback frequency too high\n");
break;
}
case dws_MPlay_NOTADWM:
{
/*
. You passed the STK a pointer to something which is not a .DWM file!
*/
printf("The file you are attempting to play is not a .DWM\n");
break;
}
case dws_MPlay_NOTSUPPORTEDVER:
{
/*
. The STK can't play a .DWM converted using a version of VOC2DWM.EXE
. newer than itself. And, although we'll try to maintain backwards
. compatibility, we may not be able to guarantee that newer versions
. of the code will be able to play older .DWM files. In any event,
. it's a good idea to always convert .MID files with the utility
. which comes with the library you're linking into your application.
*/
printf("Please reconvert this file using the MID2DWM.EXE which came with this library");
break;
}
case dws_MPlay_INTERNALERROR:
{
/*
. This error should never occur and probably will not affect sound
. play(?). If it happens please contact DiamondWare.
*/
printf("An internal error has occured\nPlease contact DiamondWare\n");
break;
}
case dws_BUSY:
{
/*
. Can only occur when DWS is being called from the background
. (within an ISR--possibly timer or keyboard handler.) If you get
. this error, do your IRET, and call again from your next interrupt.
. Repeat until successful.
*/
printf("DWS is busy now, please call again later.");
}
case dws_IRQDISABLED:
{
/*
. The following error may be triggered by dws_Init, dws_Kill,
. or dws_DetectHardWare. It occurs if interrupts are disabled.
. Enable interrupts (execute the STI instruction) and call again.
*/
printf("Interrupts are disabled.\n");
break;
}
default:
{
/*
. If this function was clipped intact from err.c, this case
. should never occur and probably will not affect sound play(?)
. If it happens please contact DiamondWare.
*/
printf("I'm confused! Where am I? HOW DID I GET HERE????\n");
printf("The ERROR number is: %d\n",errornum);
}
}
}