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41 lines
1.1 KiB
Plaintext
41 lines
1.1 KiB
Plaintext
/****************************************************
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* pointer - Pointer Manipulation Functions for C02 *
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****************************************************/
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/* Set Pointer Address *
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* Args: &a - Address *
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* Args: zp - zero page pointer address */
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void ptrset();
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/* Write byte to pointer address *
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* and increment pointer *
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* Args: b - Byte to write * /
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void ptrput();
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/* Read byte from pointer address *
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* and increment pointer *
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* Returns: Byte read from pointer */
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char ptrget();
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/* Increment Pointer */
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void ptrinc();
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/* Decrement Pointer */
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void ptrdec();
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/* Add Offset to Pointer *
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* Args: n - Number of bytes to add * /
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void ptradd();
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/* Subtract Offset from Pointer *
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* Args: n - Number of bytes to subtract * /
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void ptrsub();
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/* Compare Pointer to Address *
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* Args: &a - Address to compare against *
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* Returns: Result of comparison *
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* -1 = Pointer < Address *
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* 0 = Pointer = Address *
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* 1 = Pointer > Address */
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void ptrcmp();
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