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39 lines
1.0 KiB
Plaintext
39 lines
1.0 KiB
Plaintext
/***************************************
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* Screen Control Functions for VIC-20 *
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***************************************/
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/* Screen Modes for getscr() and setscr() */
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#define SMTEXT $00 //System Default Text Mode
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#define SMWIDE $FF //Wide Screen Text Mode (Unsupported)
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/* Clear the Screen */
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void clrscn();
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/* Move Cursor to Top Left of Screen */
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void crsrhm();
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/* Get Current Cursor Position *
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* Returns: cursor column *
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( cursor row */
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char getpos();
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/* Get Screen Mode *
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* Returns: char mode - Current Screen Mode */
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char getscr();
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/* Get Screen Size *
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* Returns: width in columns *
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* height in rows */
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char getsiz();
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/* Move Cursor to Specified Position *
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* Args: column - screen column (0 = left) *
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* row - screen line (0 = top) */
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void setpos();
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/* Set Screen Mode *
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* Args: char mode - screen mode *
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* 0 = default text mode *
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* Returns: $FF if Mode Invalid */
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char setscr();
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