image_ref.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
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *----------------------------------------------------------------------------
 * Concesso in licenza secondo i termini della Licenza Apache, versione 2.0
 * (la "Licenza"); è proibito usare questo file se non in conformità alla
 * Licenza. Una copia della Licenza è disponibile all'indirizzo:
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Se non richiesto dalla legislazione vigente o concordato per iscritto,
 * il software distribuito nei termini della Licenza è distribuito
 * "COSÌ COM'È", SENZA GARANZIE O CONDIZIONI DI ALCUN TIPO, esplicite o
 * implicite. Consultare la Licenza per il testo specifico che regola le
 * autorizzazioni e le limitazioni previste dalla medesima.
 ****************************************************************************/
 
/****************************************************************************
 * INCLUDE SECTION 
 ****************************************************************************/
 
#include "../../../ugbc.h"
 
/****************************************************************************
 * CODE SECTION 
 ****************************************************************************/
 
#if defined(__atari__) || defined(__atarixl__)
 
Variable * image_ref( Environment * _environment, char * _image ) {
 
    Variable * image = variable_retrieve( _environment, _image );
 
    Variable * imageRef = variable_temporary( _environment, VT_IMAGEREF, "(imageref)" );
 
    image->usedImage = 1;
    
    switch( image->type ) {
        case VT_IMAGE:
 
            // BASE
 
            outline1("LDA #<%s", image->realName);
            outline1( "STA %s", imageRef->realName );
            outline1("LDA #>%s", image->realName);
            outline1( "STA %s", address_displacement( _environment, imageRef->realName, "1" ) );
 
            // SIZE
 
            outline1("LDA #$%2.2x", (unsigned char)( image->frameSize & 0xff ) );
            outline1( "STA %s", address_displacement( _environment, imageRef->realName, "2" ) );
            outline1("LDA #$%2.2x", (unsigned char)( ( image->frameSize >> 8 ) & 0xff ) );
            outline1( "STA %s", address_displacement( _environment, imageRef->realName, "3" ) );
 
            // BANK
 
            // outline1( "LDA #$%2.2x", image->bankAssigned );
            // outline1( "STA %s+4", imageRef->realName );
 
            // INFO
 
            outline0( "LDA #$03" );
            outline1( "STA %s", address_displacement( _environment, imageRef->realName, "5" ) );
 
            // RESIDENT
 
            // char bankWindowName[MAX_TEMPORARY_STORAGE];
            // sprintf( bankWindowName, "BANKWINDOW%2.2x", image->residentAssigned );
 
            // outline1( "LDX #%s", bankWindowName );
            // outline1( "STX %s+6", imageRef->realName );
 
            // TABLE1
 
            // outline1( "LDX #%soffsetframe", image->realName );
            // outline1( "STX %s+8", imageRef->realName );
 
            // TABLE2
 
            // outline1( "LDX #%soffsetsequence", image->realName );
            // outline1( "STX %s+10", imageRef->realName );
 
            break;
 
        case VT_IMAGES:
 
            // BASE
 
            outline1("LDA #<%s", image->realName);
            outline1( "STA %s", imageRef->realName );
            outline1("LDA #>%s", image->realName);
            outline1( "STA %s", address_displacement( _environment, imageRef->realName, "1" ) );
 
            // SIZE
 
            outline1("LDA #$%2.2x", (unsigned char)( image->frameSize & 0xff ) );
            outline1( "STA %s", address_displacement( _environment, imageRef->realName, "2" ) );
            outline1("LDA #$%2.2x", (unsigned char)( ( image->frameSize >> 8 ) & 0xff ) );
            outline1( "STA %s", address_displacement( _environment, imageRef->realName, "3" ) );
 
            // BANK
 
            // outline1( "LDA #$%2.2x", image->bankAssigned );
            // outline1( "STA %s+4", imageRef->realName );
 
            // INFO
 
            outline0( "LDA #$13" );
            outline1( "STA %s", address_displacement( _environment, imageRef->realName, "5" ) );
 
            // RESIDENT
 
            // char bankWindowName[MAX_TEMPORARY_STORAGE];
            // sprintf( bankWindowName, "BANKWINDOW%2.2x", image->residentAssigned );
 
            // outline1( "LDX #%s", bankWindowName );
            // outline1( "STX %s+6", imageRef->realName );
 
            // TABLE1
 
            outline1("LDA #<%soffsetframe", image->realName);
            outline1( "STA %s", address_displacement( _environment, imageRef->realName, "8" ) );
            outline1("LDA #>%soffsetframe", image->realName);
            outline1( "STA %s", address_displacement( _environment, imageRef->realName, "9" ) );
 
            // TABLE2
 
            // outline1( "LDX #%soffsetsequence", image->realName );
            // outline1( "STX %s+10", imageRef->realName );
 
            break;
 
        case VT_SEQUENCE:
 
            // BASE
 
            outline1("LDA #<%s", image->realName);
            outline1( "STA %s", imageRef->realName );
            outline1("LDA #>%s", image->realName);
            outline1( "STA %s", address_displacement( _environment, imageRef->realName, "1" ) );
 
            // SIZE
 
            outline1("LDA #$%2.2x", (unsigned char)( image->frameSize & 0xff ) );
            outline1( "STA %s", address_displacement( _environment, imageRef->realName, "2" ) );
            outline1("LDA #$%2.2x", (unsigned char)( ( image->frameSize >> 8 ) & 0xff ) );
            outline1( "STA %s", address_displacement( _environment, imageRef->realName, "3" ) );
 
            // BANK
 
            // outline1( "LDA #$%2.2x", image->bankAssigned );
            // outline1( "STA %s+4", imageRef->realName );
 
            // INFO
 
            outline0( "LDA #$13" );
            outline1( "STA %s", address_displacement( _environment, imageRef->realName, "5" ) );
 
            // RESIDENT
 
            // char bankWindowName[MAX_TEMPORARY_STORAGE];
            // sprintf( bankWindowName, "BANKWINDOW%2.2x", image->residentAssigned );
 
            // outline1( "LDX #%s", bankWindowName );
            // outline1( "STX %s+6", imageRef->realName );
 
            // TABLE1
 
            outline1("LDA #<%soffsetframe", image->realName);
            outline1( "STA %s", address_displacement( _environment, imageRef->realName, "8" ) );
            outline1("LDA #>%soffsetframe", image->realName);
            outline1( "STA %s", address_displacement( _environment, imageRef->realName, "9" ) );
 
            // TABLE2
 
            outline1("LDA #<%soffsetsequence", image->realName);
            outline1( "STA %s", address_displacement( _environment, imageRef->realName, "10" ) );
            outline1("LDA #>%soffsetsequence", image->realName);
            outline1( "STA %s", address_displacement( _environment, imageRef->realName, "11" ) );
 
            break;
 
        default:
            CRITICAL_IMAGEREF_ON_NON_IMAGE( _image );
    }
 
    // FRAME WIDTH
    outline1( "LDA #$%2.2x", image->frameWidth );
    outline1( "STA %s+12", imageRef->realName );
 
    // FRAME WIDTH
    outline1( "LDA #$%2.2x", image->frameHeight );
    outline1( "STA %s+13", imageRef->realName );
 
    return imageRef;
 
}
 
#endif