0xED8

0xED8 is a hexadecimal integer that represents the decimal number 3800 and the binary value 11101101000. In many programming languages and hardware documentation, the prefix 0x indicates that the following digits are in base‑16. The notation is used to express numbers compactly, particularly in contexts where values naturally align with 4‑bit (nibble) or 8‑bit byte boundaries. 0xED8 therefore occupies exactly 12 bits, making it suitable for representation in 16‑bit registers or memory locations.

The value itself appears in a variety of technical references. In microcontroller and embedded‑systems literature it is used as an example address or data word in documentation or sample code. For instance, the Zilog Z80 CPU uses op‑codes beginning with the 0xED byte for a special group of instructions; 0xED8 is the first byte of the opcode sequence when the second byte is 0x00, and however the precise operation depends on the following byte. In addition, 0xED8 is sometimes shown in processor instruction set manuals as part of the address space for BIOS or firmware routines, especially in legacy systems where 16‑bit addressing is common.

In software and debugging contexts, 0xED8 may be shown in stack traces or core dumps as a pointer value or as part of binary data streams. The value is unrelated to a specific hardware component or protocol, but its occurrence in many exercises and documentation makes it a familiar reference point for students of computer architecture and assembly language. The number’s simplicity also makes it a convenient placeholder in teaching materials, where a fixed, easily remembered constant is needed to illustrate concepts such as address calculation, data alignment, or bit‑masking.