2 ms·
CP/M predates the Z80 CPU by a few years. It was designed for the 8080.
by Narishma 8y ago
CP/M predates the Z80 CPU by a few years. It was designed for the 8080.
- pjmlp 8y agoThere was a version for the 128K +3A though.
- flohofwoe 8y agoThe Z80 was designed to be i8080 compatible (for the documented/recommended opcodes), so that it could run unmodified CP/M software. The Z80 instruction set basically added new opcodes where the i8080 instruction set had gaps or redundant opcodes (e.g. the i8080 had 16 identical NOP instructions, and 4 identical CALL instructions, but only the lowest opcode was recommended to be used, if one of the redundant opcodes was used, the program ran on an i8080 but not on a Z80).