textmap_at.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.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
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 * See the License for the specific language governing permissions and
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/****************************************************************************
 * INCLUDE SECTION 
 ****************************************************************************/
 
#include "../../ugbc.h"
 
/****************************************************************************
 * CODE SECTION 
 ****************************************************************************/

/* <usermanual>
@keyword TEXTMAP AT
</usermanual> */
void textmap_at( Environment * _environment, int _address ) {
 
    // Let's define the special variable bitmapAddress, and update
    // it with the requested value.
    Variable * bitmapAddress = variable_retrieve( _environment, "TEXTADDRESS" );
    variable_store( _environment, "TEXTADDRESS", ( ( _address >> 10 ) ) * 0x200 );
 
    char addressString[MAX_TEMPORARY_STORAGE]; sprintf(addressString, "#$%2.2x", ( _address >> 10 ) );
 
    gime_textmap_at( _environment, addressString );
 
}

/* <usermanual>
@keyword TEXTMAP AT
</usermanual> */
void textmap_at_var( Environment * _environment, char * _address ) {
 
    // Let's define the special variable bitmapAddress, and update
    // it with the requested value.    
    Variable * bitmapAddress = variable_retrieve( _environment, "TEXTADDRESS" );
    Variable * address = variable_retrieve( _environment, _address );
 
    variable_move_naked( _environment, address->name, bitmapAddress->name );
 
    char addressString[MAX_TEMPORARY_STORAGE]; sprintf(addressString, "%s", address->realName );
 
    gime_textmap_at( _environment, addressString );
 
}