| R/!W | --> | 1 | 68901 MFP |
48 | <-- | !CE |
| RS0 | --> | 2 | 47 | <-- | !DS | |
| RS1 | --> | 3 | 46 | !DTACK | ||
| RS2 | --> | 4 | 45 | !IACK | ||
| RS3 | --> | 5 | 44 | <-> | D7 | |
| RS4 | --> | 6 | 43 | <-> | D6 | |
| TC | 7 | 42 | <-> | D5 | ||
| SO | <-- | 8 | 41 | <-> | D4 | |
| SI | --> | 9 | 40 | <-> | D3 | |
| RC | 10 | 39 | <-> | D2 | ||
| VCC | --- | 11 | 38 | <-> | D1 | |
| NC | 12 | 37 | <-> | D0 | ||
| TAO | 13 | 36 | --- | GND | ||
| TBO | 14 | 35 | <-- | CLK | ||
| TCO | 15 | 34 | <-- | !IEI | ||
| TDO | 16 | 33 | --> | !IEO | ||
| X1 | 17 | 32 | --> | !IRQ | ||
| X0 | 18 | 31 | !RR | |||
| TAI | 19 | 30 | !TR | |||
| TBI | 20 | 29 | INT7 | |||
| !RST | --> | 21 | 28 | INT6 | ||
| INT0 | 22 | 27 | INT5 | |||
| INT1 | 23 | 26 | INT4 | |||
| INT2 | 24 | 25 | INT3 |
PLCC52 +-------------------------------------------+ | 8 TC | 21| 34 !TR| 47 D6 | | 9 SO | 22 TAI| 35 !RR| 48 D7 | | 10 SI | 23 TBI| 36 !IRQ | 49 !IACK | | 11 RC | 24 !RST | 37 !IEO | 50 !DTACK | | 12 VCC| 25 INT0 | 38 !IEI | 51 !DS| | 13| 26 INT1 | 39 CLK| 52 !CE| | 14| 27 INT2 | 40 GND| 1| | 15 TAO| 28 INT3 | 41 D0 | 2 R/!W | | 16 TBO| 29 INT4 | 42 D1 | 3 RS0| | 17 TCO| 30 INT5 | 43 D2 | 4 RS1| | 18 TDO| 31 INT6 | 44 D3 | 5 RS2| | 19 X1 | 32 INT7 | 45 D4 | 6 RS3| | 20 X0 | 33| 46 D5 | 7 RS4| +-------------------------------------------+