instrument.c

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/*****************************************************************************
 * ugBASIC - an isomorphic BASIC language compiler for retrocomputers        *
 *****************************************************************************
 * Copyright 2021-2026 Marco Spedaletti (asimov@mclink.it)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
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/****************************************************************************
 * INCLUDE SECTION 
 ****************************************************************************/
 
#include "../../ugbc.h"
 
/****************************************************************************
 * CODE SECTION 
 ****************************************************************************/

/* <usermanual>
@keyword INSTRUMENT
 
@english
This command allows you to select one of the available tools. Instruments 
can be set for all voices, or for a set of particular voices.
 
@italian
Questo comando permette di selezionare uno tra gli strumenti disponibili. 
Si possono impostare strumenti per tutte le voci, o per un insieme di voci 
particolari. 
 
@syntax INSTRUMENT #instrument [ON #channels]
@syntax INSTRUMENT name [ON #channels]
 
@example INSTRUMENT #42 ON %001
@example INSTRUMENT SHAMISEN
 
@target c128
</usermanual> */
 
void instrument( Environment * _environment, int _instrument, int _channels ) {
 
    sid_start( _environment, _channels );
    sid_set_program( _environment, _channels, _instrument );
 
}

void instrument_semi_var( Environment * _environment, int _instrument, char * _channels ) {
 
    if ( _channels ) {
        Variable * channels = variable_retrieve_or_define( _environment, _channels, VT_WORD, 0x07 );
        sid_start_var( _environment, channels->realName );
        sid_set_program_semi_var( _environment, channels->realName, _instrument );
    } else {
        sid_start_var( _environment, NULL );
        sid_set_program_semi_var( _environment, NULL, _instrument );
    }
 
}