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available to any program.) The 16-bit segment registers allow for 65,536 segments; each segment begins at a fixed offset equal to 16 times the segment number; the segment starting address granularity is 16 bytes. Each segment grants read-write access to 64 KiB (65,536 bytes) of address space (this limit is set by the 16-bit PC and SP registers; the processor does no bounds checking). Offset+address exceeding 0xFFFFF wraps around to 0x00000. Each 64 KiB segment overlaps the next 4,095 segments; each physical address can be denoted by

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