541 lines
12 KiB
C
541 lines
12 KiB
C
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/*
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Copyright (C) 1994-1995 Apogee Software, Ltd.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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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.
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See the GNU General Public License for more details.
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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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/**********************************************************************
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module: AWE32.C
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author: James R. Dose
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date: August 23, 1994
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Cover functions for calling the AWE32 low-level library.
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(c) Copyright 1994 James R. Dose. All Rights Reserved.
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**********************************************************************/
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#include <conio.h>
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#include <string.h>
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#include "dpmi.h"
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#include "blaster.h"
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#include "ctaweapi.h"
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#include "awe32.h"
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#define _inp inp
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#define _outp outp
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/* DSP defines */
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#define MPU_ACK_OK 0xfe
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#define MPU_RESET_CMD 0xff
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#define MPU_ENTER_UART 0x3f
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static WORD wSBCBaseAddx; /* Sound Blaster base address */
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static WORD wEMUBaseAddx; /* EMU8000 subsystem base address */
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static WORD wMpuBaseAddx; /* MPU401 base address */
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static unsigned short NoteFlags[ 128 ];
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/* macros */
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#define SBCPort( x ) ( ( x ) + wSBCBaseAddx )
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#define MPUPort( x ) ( ( x ) + wMpuBaseAddx )
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static SOUND_PACKET spSound =
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{
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0
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};
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static LONG lBankSizes[ MAXBANKS ] =
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{
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0
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};
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unsigned SetES( void );
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#pragma aux SetES = \
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"xor eax, eax" \
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"mov ax, es" \
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"mov bx, ds" \
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"mov es, bx" \
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modify [ eax ebx ];
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void RestoreES( unsigned num );
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#pragma aux RestoreES = \
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"mov es, ax" \
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parm [ eax ];
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int AWE32_ErrorCode = AWE32_Ok;
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#define AWE32_SetErrorCode( status ) \
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AWE32_ErrorCode = ( status );
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/*---------------------------------------------------------------------
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Function: AWE32_ErrorString
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Returns a pointer to the error message associated with an error
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number. A -1 returns a pointer the current error.
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---------------------------------------------------------------------*/
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char *AWE32_ErrorString
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(
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int ErrorNumber
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)
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{
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char *ErrorString;
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switch( ErrorNumber )
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{
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case AWE32_Warning :
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case AWE32_Error :
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ErrorString = AWE32_ErrorString( AWE32_ErrorCode );
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break;
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case AWE32_Ok :
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ErrorString = "AWE32 ok.";
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break;
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case AWE32_SoundBlasterError :
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ErrorString = BLASTER_ErrorString( BLASTER_Error );
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break;
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case AWE32_NotDetected :
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ErrorString = "Could not detect AWE32.";
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break;
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case AWE32_UnableToInitialize :
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ErrorString = "Unable to initialize AWE32.";
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case AWE32_MPU401Error :
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ErrorString = "MPU-401 initialization failed in AWE32.";
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break;
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case AWE32_DPMI_Error :
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ErrorString = "DPMI Error in AWE32.";
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break;
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default :
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ErrorString = "Unknown AWE32 error code.";
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break;
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}
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return( ErrorString );
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}
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/**********************************************************************
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Memory locked functions:
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**********************************************************************/
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#define AWE32_LockStart AWE32_NoteOff
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void AWE32_NoteOff
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(
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int channel,
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int key,
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int velocity
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)
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{
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unsigned temp;
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temp = SetES();
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awe32NoteOff( channel, key, velocity );
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RestoreES( temp );
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NoteFlags[ key ] ^= ( 1 << channel );
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}
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void AWE32_NoteOn
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(
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int channel,
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int key,
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int velocity
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)
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{
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unsigned temp;
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temp = SetES();
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awe32NoteOn( channel, key, velocity );
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RestoreES( temp );
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NoteFlags[ key ] |= ( 1 << channel );
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}
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void AWE32_PolyAftertouch
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(
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int channel,
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int key,
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int pressure
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)
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{
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unsigned temp;
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temp = SetES();
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awe32PolyKeyPressure( channel, key, pressure );
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RestoreES( temp );
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}
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void AWE32_ChannelAftertouch
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(
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int channel,
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int pressure
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)
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{
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unsigned temp;
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temp = SetES();
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awe32ChannelPressure( channel, pressure );
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RestoreES( temp );
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}
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void AWE32_ControlChange
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(
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int channel,
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int number,
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int value
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)
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{
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unsigned temp;
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int i;
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unsigned channelmask;
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temp = SetES();
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if ( number == 0x7b )
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{
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channelmask = 1 << channel;
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for( i = 0; i < 128; i++ )
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{
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if ( NoteFlags[ i ] & channelmask )
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{
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awe32NoteOff( channel, i, 0 );
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NoteFlags[ i ] ^= channelmask;
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}
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}
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}
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else
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{
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awe32Controller( channel, number, value );
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}
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RestoreES( temp );
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}
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void AWE32_ProgramChange
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(
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int channel,
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int program
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)
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{
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unsigned temp;
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temp = SetES();
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awe32ProgramChange( channel, program );
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RestoreES( temp );
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}
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void AWE32_PitchBend
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(
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int channel,
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int lsb,
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int msb
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)
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{
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unsigned temp;
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temp = SetES();
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awe32PitchBend( channel, lsb, msb );
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RestoreES( temp );
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}
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/*---------------------------------------------------------------------
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Function: AWE32_LockEnd
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Used for determining the length of the functions to lock in memory.
|
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---------------------------------------------------------------------*/
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static void AWE32_LockEnd
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(
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void
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)
|
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{
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}
|
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/*
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static int InitMPU
|
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(
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void
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)
|
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|
|
|
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{
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volatile DWORD dwCount;
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|
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for (dwCount=0; dwCount<0x2000; dwCount++) ;
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dwCount = 0x2000;
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while (dwCount && _inp(MPUPort(1)) & 0x40) --dwCount;
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_outp(MPUPort(1), MPU_RESET_CMD);
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for (dwCount=0; dwCount<0x2000; dwCount++) ;
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dwCount = 0x2000;
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while (dwCount && _inp(MPUPort(1)) & 0x80) --dwCount;
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_inp(MPUPort(0));
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|
|
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for (dwCount=0; dwCount<0x2000; dwCount++) ;
|
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dwCount = 0x2000;
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|
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while (dwCount && _inp(MPUPort(1)) & 0x40) --dwCount;
|
|||
|
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_outp(MPUPort(1), MPU_RESET_CMD);
|
|||
|
|
|
|||
|
|
for (dwCount=0; dwCount<0x2000; dwCount++) ;
|
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|
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dwCount = 0x2000;
|
|||
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while (dwCount && _inp(MPUPort(1)) & 0x80) --dwCount;
|
|||
|
|
_inp(MPUPort(0));
|
|||
|
|
|
|||
|
|
for (dwCount=0; dwCount<0x2000; dwCount++) ;
|
|||
|
|
dwCount = 0x2000;
|
|||
|
|
while (dwCount && _inp(MPUPort(1)) & 0x40) --dwCount;
|
|||
|
|
_outp(MPUPort(1), MPU_ENTER_UART);
|
|||
|
|
|
|||
|
|
for (dwCount=0; dwCount<0x2000; dwCount++) ;
|
|||
|
|
dwCount = 0x2000;
|
|||
|
|
while (dwCount && _inp(MPUPort(1)) & 0x80) --dwCount;
|
|||
|
|
if (!dwCount) return TRUE;
|
|||
|
|
if (_inp(MPUPort(0)) != MPU_ACK_OK) return TRUE;
|
|||
|
|
|
|||
|
|
// mask MPU-401 interrupt
|
|||
|
|
_outp(SBCPort(0x4), 0x83);
|
|||
|
|
_outp(SBCPort(0x5), _inp(SBCPort(0x5)) & ~0x04);
|
|||
|
|
|
|||
|
|
return FALSE;
|
|||
|
|
}
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
/*<2A><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>͸*/
|
|||
|
|
/*<2A> ShutdownMPU <20>*/
|
|||
|
|
/*<2A> Cleans up Sound Blaster to normal state. <20>*/
|
|||
|
|
/*<2A><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>;*/
|
|||
|
|
|
|||
|
|
static void ShutdownMPU
|
|||
|
|
(
|
|||
|
|
void
|
|||
|
|
)
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
volatile DWORD dwCount;
|
|||
|
|
|
|||
|
|
for (dwCount=0; dwCount<0x2000; dwCount++) ;
|
|||
|
|
dwCount = 0x2000;
|
|||
|
|
while (dwCount && _inp(MPUPort(1)) & 0x40) --dwCount;
|
|||
|
|
_outp(MPUPort(1), MPU_RESET_CMD);
|
|||
|
|
for (dwCount=0; dwCount<0x2000; dwCount++) ;
|
|||
|
|
_inp(MPUPort(0));
|
|||
|
|
|
|||
|
|
for (dwCount=0; dwCount<0x2000; dwCount++) ;
|
|||
|
|
dwCount = 0x2000;
|
|||
|
|
while (dwCount && _inp(MPUPort(1)) & 0x40) --dwCount;
|
|||
|
|
_outp(MPUPort(1), MPU_RESET_CMD);
|
|||
|
|
for (dwCount=0; dwCount<0x2000; dwCount++) ;
|
|||
|
|
_inp(MPUPort(0));
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
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/*<2A><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>͸*/
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/*<2A> LoadSBK <20>*/
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/*<2A><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>;*/
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static void LoadSBK
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(
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void
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)
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{
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/* use embeded preset objects */
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spSound.bank_no = 0; /* load as Bank 0 */
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spSound.total_banks = 1; /* use 1 bank first */
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lBankSizes[ 0 ] = 0; /* ram is not needed */
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spSound.banksizes = lBankSizes;
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awe32DefineBankSizes( &spSound );
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awe32SoundPad.SPad1 = awe32SPad1Obj;
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awe32SoundPad.SPad2 = awe32SPad2Obj;
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awe32SoundPad.SPad3 = awe32SPad3Obj;
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awe32SoundPad.SPad4 = awe32SPad4Obj;
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awe32SoundPad.SPad5 = awe32SPad5Obj;
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awe32SoundPad.SPad6 = awe32SPad6Obj;
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awe32SoundPad.SPad7 = awe32SPad7Obj;
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}
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int AWE32_Init
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(
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void
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)
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{
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int status;
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BLASTER_CONFIG Blaster;
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wSBCBaseAddx = 0x220;
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wEMUBaseAddx = 0x620;
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wMpuBaseAddx = 0x330;
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status = BLASTER_GetCardSettings( &Blaster );
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if ( status != BLASTER_Ok )
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{
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status = BLASTER_GetEnv( &Blaster );
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if ( status != BLASTER_Ok )
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{
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AWE32_SetErrorCode( AWE32_SoundBlasterError );
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return( AWE32_Error );
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}
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}
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wSBCBaseAddx = Blaster.Address;
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if ( wSBCBaseAddx == UNDEFINED )
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{
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wSBCBaseAddx = 0x220;
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}
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wMpuBaseAddx = Blaster.Midi;
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if ( wMpuBaseAddx == UNDEFINED )
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{
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wMpuBaseAddx = 0x330;
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}
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wEMUBaseAddx = Blaster.Emu;
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if ( wEMUBaseAddx <= 0 )
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{
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wEMUBaseAddx = wSBCBaseAddx + 0x400;
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}
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status = awe32Detect( wEMUBaseAddx );
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if ( status )
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{
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AWE32_SetErrorCode( AWE32_NotDetected );
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return( AWE32_Error );
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}
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status = awe32InitHardware();
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if ( status )
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{
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AWE32_SetErrorCode( AWE32_UnableToInitialize );
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return( AWE32_Error );
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}
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status = awe32InitMIDI();
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if ( status )
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{
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AWE32_Shutdown();
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AWE32_SetErrorCode( AWE32_MPU401Error )
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return( AWE32_Error );
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}
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/*
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status = InitMPU();
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if ( status )
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{
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ShutdownMPU();
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status = InitMPU();
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if ( status )
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{
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ShutdownMPU();
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status = InitMPU();
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if ( status )
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{
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AWE32_Shutdown();
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AWE32_SetErrorCode( AWE32_MPU401Error )
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return( AWE32_Error );
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}
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}
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}
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*/
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status = DPMI_LockMemoryRegion( AWE32_LockStart, AWE32_LockEnd );
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status |= DPMI_Lock( wSBCBaseAddx );
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status |= DPMI_Lock( wEMUBaseAddx );
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status |= DPMI_Lock( wMpuBaseAddx );
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status |= DPMI_Lock( spSound );
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status |= DPMI_Lock( lBankSizes );
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status |= DPMI_LockMemory( NoteFlags, sizeof( NoteFlags ) );
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// Lock awe32 library
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status = DPMI_LockMemoryRegion( __midieng_code, __midieng_ecode );
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status = DPMI_LockMemoryRegion( __midieng_code(), __midieng_ecode() );
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status = DPMI_LockMemoryRegion( __nrpn_code, __nrpn_ecode );
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status = DPMI_LockMemoryRegion( __nrpn_code(), __nrpn_ecode() );
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status = DPMI_LockMemoryRegion( &__midivar_data, &__midivar_edata );
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status = DPMI_LockMemoryRegion( &__nrpnvar_data, &__nrpnvar_edata );
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status = DPMI_LockMemoryRegion( &__embed_data, &__embed_edata );
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if ( status != DPMI_Ok )
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{
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ShutdownMPU();
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awe32Terminate();
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AWE32_SetErrorCode( AWE32_DPMI_Error );
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return( AWE32_Error );
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}
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// Set the number of voices to use to 32
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awe32NumG = 32;
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awe32TotalPatchRam(&spSound);
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LoadSBK();
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awe32InitMIDI();
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awe32InitNRPN();
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memset( NoteFlags, 0, sizeof( NoteFlags ) );
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return( AWE32_Ok );
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}
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void AWE32_Shutdown
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(
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void
|
|||
|
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)
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|
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|
|||
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{
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ShutdownMPU();
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awe32Terminate();
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DPMI_UnlockMemoryRegion( AWE32_LockStart, AWE32_LockEnd );
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DPMI_Unlock( wSBCBaseAddx );
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DPMI_Unlock( wEMUBaseAddx );
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DPMI_Unlock( wMpuBaseAddx );
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DPMI_Unlock( spSound );
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DPMI_Unlock( lBankSizes );
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DPMI_UnlockMemory( NoteFlags, sizeof( NoteFlags ) );
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// Unlock awe32 library
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|||
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DPMI_UnlockMemoryRegion( __midieng_code, __midieng_ecode );
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DPMI_UnlockMemoryRegion( __midieng_code(), __midieng_ecode() );
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DPMI_UnlockMemoryRegion( __nrpn_code, __nrpn_ecode );
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DPMI_UnlockMemoryRegion( __nrpn_code(), __nrpn_ecode() );
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DPMI_UnlockMemoryRegion( &__midivar_data, &__midivar_edata );
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DPMI_UnlockMemoryRegion( &__nrpnvar_data, &__nrpnvar_edata );
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DPMI_UnlockMemoryRegion( &__embed_data, &__embed_edata );
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|||
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}
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