colormap_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.
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/****************************************************************************
 * INCLUDE SECTION 
 ****************************************************************************/
 
#include "../../ugbc.h"
 
/****************************************************************************
 * CODE SECTION
 ****************************************************************************/

/* <usermanual>
@keyword COLORMAP AT
 
@english
Set the starting address, in memory, for the colormap. The input parameter 
is decoded and declined according to the hardware limits. So it is not said 
that exactly the given address is set.
 
@italian
Imposta l'indirizzo di partenza, in memoria, per la mappa dei colori. Il parametro di input
viene decodificato e declinato in base ai limiti hardware. Quindi non è detto
che sia impostato esattamente l'indirizzo specificato. 
 
@syntax COLORMAP AT #address
 
@example COLORMAP AT #$B800
 
@seeAlso BITMAP ENABLE
 
@target c128
</usermanual> */
void colormap_at( Environment * _environment, int _address ) {
 
    // Let's define the special variable and fill up with the value.
    Variable * colormapAddress = variable_retrieve_or_define( _environment, "COLORMAPADDRESS", VT_ADDRESS, _address );
 
    variable_store( _environment, colormapAddress->name, ( ( ( _address >> 10 ) & 0x0f ) * 0x8400 ) );
 
    char addressString[MAX_TEMPORARY_STORAGE]; sprintf(addressString, "%2.2x", ( _address >> 10 ) & 0x0f );
 
    vic2_colormap_at( _environment, addressString );
 
}

/* <usermanual>
@keyword COLORMAP AT
</usermanual> */
void colormap_at_var( Environment * _environment, char * _address ) {
 
    // Let's define the special variable and fill up with the value.
    Variable * colormapAddress = variable_retrieve_or_define( _environment, "COLORMAPADDRESS", VT_ADDRESS, 0x8400 );
    Variable * address = variable_retrieve( _environment, _address );
 
    // variable_store( _environment, colormapAddress->name, ( ( ( _address >> 10 ) & 0x0f ) * 0x8400 ) );
 
    char addressString[MAX_TEMPORARY_STORAGE]; sprintf(addressString, "%s", address_displacement(_environment, address->realName, "1") );
 
    vic2_colormap_at( _environment, addressString );
 
}