charset_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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 * 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.
 *----------------------------------------------------------------------------
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 * (la "Licenza"); è proibito usare questo file se non in conformità alla
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 *
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 * Se non richiesto dalla legislazione vigente o concordato per iscritto,
 * il software distribuito nei termini della Licenza è distribuito
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/****************************************************************************
 * INCLUDE SECTION 
 ****************************************************************************/
 
#include "../../../ugbc.h"
 
/****************************************************************************
 * CODE SECTION
 ****************************************************************************/
 
#if defined(__atari__) || defined(__atarixl__)
 
/* <usermanual>
@keyword CHARSET AT
 
@target atari
</usermanual> */
void charset_at( Environment * _environment, int _address ) {
 
    outline1( "LDA #$%2.2x", _address >> 8 );
    outline0( "STA $2F4" );
 
}
 
/* <usermanual>
@keyword CHARSET AT
</usermanual> */
void charset_at_var( Environment * _environment, char * _address ) {
 
    outline1( "LDA %s", address_displacement( _environment, _address, "1" ) );
    outline0( "STA $2F4" );
 
}
 
void charset_uppercase( Environment * _environment ) {
    charset_at( _environment, 0xe0 );
}
 
void charset_lowercase( Environment * _environment ) {
    charset_at( _environment, 0xe2 );
}
 
#endif