8080A 72 basic instructions,
variations extend to 244.
8085A 74 basic instructions,
variations extend to 246.
Length = 1 to 3 bytes.
Bit Pattern - First byte is the OP (¹B§@ºØÃþ«ü¥Ü) code.
Second & Third bytes are
Instruction Operands (¦p¦ó¹B§@),
addresses (¦ì§}) ©Î contants (±`¼Æ).
¤T. ¤ÀªK (branch) Ãþ - Åܧó°õ¦æ¶¶§Ç (execution sequence),
¨Ò¦p: jump, routine call, ¤Î
return instruction.
¥|. °ï¬ä (stack) ¤Î ¾÷¾¹±±¨î (machine control) Ãþ -
ºû«ù °ï¬ä ¤Î ¤º³¡±±¨î
ºX¼m (flags).
¤. ºâ¾Ç (arithmetic) Ãþ - ¥[, ´î, ¼, °£,
¸ê®Æ¼W, ´î.
..... etc.