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84 lines
2.0 KiB
Plaintext
84 lines
2.0 KiB
Plaintext
/*****************************************************
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* Screen Control Functions and Constants for VIC-20 *
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*****************************************************/
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/* Display Colors */
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enum {BLACK, WHITE, RED, CYAN, MAGENT, GREEN, BLUE, YELLOW};
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/* PETSCII Color Code Table */
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const char clrtbl = {144, 5, 28, 159, 156, 30, 32, 158};
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;PETSCII Screen Control Characters
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CHRCLR EQU 147 Clear (CLR)
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CHRDEL EQU 20 Delete (DEL)
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CHRDN EQU 17 Cursor Down
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CHRRTN EQU 13 Return
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CHRFN1 EQU 133 Function Key 1 (F1)
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CHRFN2 EQU 137 Function Key 2 (F2)
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CHRFN3 EQU 134 Function Key 3 (F3)
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CHRFN4 EQU 138 Function Key 4 (F4)
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CHRFN5 EQU 135 Function Key 5 (F5)
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CHRFN6 EQU 139 Function Key 6 (F6)
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CHRFN7 EQU 136 Function Key 7 (F7)
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CHRFN8 EQU 140 Function Key 8 (F8)
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CHRHOM EQU 19 Home
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CHRINS EQU 148 Insert
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CHRLFT EQU 157 Cursor Left
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CHRRGT EQU 29 Cursor Left
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CHRRVF EQU 146 Reverse Off
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CHRRVN EQU 18 Reverse On
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CHRUP EQU 145 Cursor Up
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/* PETSCII Box Drawing Characters */
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#define BOXBLC = 173 //Bottom Left Corner
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#define BOXBRC = 189 //Bottom Right Corner
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#define BOXBCT = 177 //Bottom to Cetter Tee
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#define BOXCTR = 123 //Center Cross
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#define BOXHLN = 96 //Horizontal Line
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#define BOXLCT = 171 //Left To Center T
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#define BOXRCT = 179 //Right To Center T
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#define BOXTLC = 176 //Top Left Corner
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#define BOXTRC = 174 //Top Right Corner
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#define BOXTCT = 178 //Top to Center T
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#define BOXVLN = 98 //Verical Line
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/* Set Background Color *
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* Args: c - color */
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char scrbkg();
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/* Clear Screen*/
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char scrclr();
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/* Move Cursor Down */
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char scrdwn();
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/* Move Cursor Home */
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char scrhom();
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/* Move Cursor Left */
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char scrlft();
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/* Move Cursor *
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* Args: col - column *
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* row - row */
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char scrmov();
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/* Get Cursor Position *
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* Returns: column, row */
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char scrpos();
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/* Move Cursor Right */
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char scrrgt();
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/* Get Screen Size *
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* Returns: width, height */
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char scrsiz();
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/* Set Text Color *
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* Args: c - color */
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char scrtxt();
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/* Move Cursor Upt */
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char scrup();
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