| A11 | <-- | 1 | ---Z80--- ---CPU--- |
40 | --> | A10 |
| A12 | <-- | 2 | 39 | --> | A9 | |
| A13 | <-- | 3 | 38 | --> | A8 | |
| A14 | <-- | 4 | 37 | --> | A7 | |
| A15 | <-- | 5 | 36 | --> | A6 | |
| CLK | --> | 6 | 35 | --> | A5 | |
| D4 | <-> | 7 | 34 | --> | A4 | |
| D3 | <-> | 8 | 33 | --> | A3 | |
| D5 | <-> | 9 | 32 | --> | A2 | |
| D6 | <-> | 10 | 31 | --> | A1 | |
| Vcc | --- | 11 | 30 | --> | A0 | |
| D2 | <-> | 12 | 29 | --- | GND | |
| D7 | <-> | 13 | 28 | --> | !RFSH | |
| D0 | <-> | 14 | 27 | --> | !M1 | |
| D1 | <-> | 15 | 26 | <-- | !RESET | |
| !INT | --> | 16 | 25 | <-- | !BUSRQ | |
| !NMI | --> | 17 | 24 | <-- | !WAIT | |
| !HALT | <-- | 18 | 23 | --> | !BUSAK | |
| !MREQ | <-- | 19 | 22 | --> | !WR | |
| !IORQ | <-- | 20 | 21 | --> | !RD |
| S Z X A X P N C | A | Flags, Accumulator | Registers common to 8085 |
| B | C | BC register pair | |
| D | E | DE register pair | |
| H | L | HL register pair | |
| SP | Stack Pointer | ||
| PC | Program Counter | ||
| S Z X A X P N C | A' | AF' | Registers new to Z80 |
| B' | C' | BC' | |
| D' | E' | DE' | |
| H' | L' | HL' | |
| R | Refresh Row Register | ||