ugBASIC 1.18
An isomorphic BASIC language compiler for retrocomputers
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color_border.c
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1/*****************************************************************************
2 * ugBASIC - an isomorphic BASIC language compiler for retrocomputers *
3 *****************************************************************************
4 * Copyright 2021-2026 Marco Spedaletti (asimov@mclink.it)
5 *
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
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12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
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17 *----------------------------------------------------------------------------
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20 * Licenza. Una copia della Licenza è disponibile all'indirizzo:
21 *
22 * http://www.apache.org/licenses/LICENSE-2.0
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24 * Se non richiesto dalla legislazione vigente o concordato per iscritto,
25 * il software distribuito nei termini della Licenza è distribuito
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30
31/****************************************************************************
32 * INCLUDE SECTION
33 ****************************************************************************/
34
35#include "../../ugbc.h"
36
46/* <usermanual>
47@keyword COLOR BORDER
48
49@target mo5
50</usermanual> */
51void color_border( Environment * _environment, int _color ) {
52
53 outline0("LDA BASE_SEGMENT+$C0");
54 outline0("ANDA #%11100001");
55 outline1("ORA #%d", (_color&15)<<1);
56 outline0("STA BASE_SEGMENT+$C0");
57
58}
59
69void color_border_var( Environment * _environment, char * _color ) {
70 Variable * var = variable_retrieve_or_define( _environment, _color, VT_COLOR, COLOR_BLACK );
71
72 outline1("LDA %s", var->realName);
73 outline0("LSLA");
74 outline0("ANDA #%00011110");
75 outline0("STA ,-S");
76 outline0("LDA BASE_SEGMENT+$C0");
77 outline0("ANDA #%11100001");
78 outline0("ORA ,S+");
79 outline0("STA BASE_SEGMENT+$C0");
80
81}
#define COLOR_BLACK
Definition 6847.h:36
Variable * variable_retrieve_or_define(Environment *_environment, char *_name, VariableType _type, int _value)
void color_border_var(Environment *_environment, char *_color)
Emit ASM code for instruction COLOR BORDER [expression].
void color_border(Environment *_environment, int _color)
Emit ASM code for instruction COLOR BORDER [int]x.
char * realName
Definition ugbc.h:982
struct _Variable Variable
Structure of a single variable.
struct _Environment Environment
Structure of compilation environment.
@ VT_COLOR
Definition ugbc.h:471
#define outline0(s)
Definition ugbc.h:4252
#define outline1(s, a)
Definition ugbc.h:4253