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sd:sd-8516_assembly_language
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| sd:sd-8516_assembly_language [2026/04/05 09:50] – appledog | sd:sd-8516_assembly_language [2026/04/05 09:51] (current) – appledog | ||
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| | M, D | Memory pointer and memory pointer Destination. | These are often used in pairings like ELM, ELD, etc, to point to memory locations. As such they are generally for immediate use only and could be used on their own as temporary registers. | ELM is EL as high-byte | | | M, D | Memory pointer and memory pointer Destination. | These are often used in pairings like ELM, ELD, etc, to point to memory locations. As such they are generally for immediate use only and could be used on their own as temporary registers. | ELM is EL as high-byte | | ||
| | E, F, G | Extra registers | Most often used as high bytes for 24-bit memory access ex. GLD, FLM, etc. but can also be used for general purpose registers. | | | | E, F, G | Extra registers | Most often used as high bytes for 24-bit memory access ex. GLD, FLM, etc. but can also be used for general purpose registers. | | | ||
| - | | L | The Last True Register | If you really need another register, use this one. For emergency use only. | | + | | L | The Last True Register | If you really need another register, use this one. For emergency use only. | Rarely used. | |
| - | | Z | Z-index pointer | Often used as a third dimensional register for graphics or data processing. | + | | Z | Z-index pointer | Often used as a third dimensional register for graphics or data processing. |
| === Byte Access | === Byte Access | ||
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