2023-11-10 00:55:03 +01:00
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.ifndef INCLUDE_MEMCOPY
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INCLUDE_MEMCOPY = 1
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2023-12-08 22:56:35 +01:00
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.include "system.h65"
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2023-11-10 00:55:03 +01:00
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2023-12-20 12:27:54 +01:00
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.export memcopy
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2023-12-08 22:56:35 +01:00
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.code
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2023-11-10 00:55:03 +01:00
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;********************************************************************************
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; @function Copy a block of memory to a different address
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; @param ARG0-1: Source address
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; @param ARG2-3: Target address
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; @param y: Number of bytes to copy
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;********************************************************************************
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.proc memcopy
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2023-12-08 22:56:35 +01:00
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cpy #0
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2023-12-20 12:27:54 +01:00
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beq @rts
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@copy_byte:
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dey
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2023-12-08 00:03:29 +01:00
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lda (ARG0),y
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sta (ARG2),y
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2023-12-20 12:27:54 +01:00
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cpy #0
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bne @copy_byte
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@rts:
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2023-11-10 00:55:03 +01:00
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rts
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2023-12-08 22:56:35 +01:00
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.endproc
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2023-11-10 00:55:03 +01:00
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.endif ; guard
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