2650
From Citylan
8-bit Microprocessor
Pinout
DIP40 +---\/---+ Sense | 1 40| FLAG A12 | 2 39| Vcc A11 | 3 38| CLOCK A10 | 4 37| *PAUSE A9 | 5 36| *OPACK A8 | 6 35| RUN/*WAIT A7 | 7 34| INTACK A6 | 8 33| D0 A5 | 9 32| D1 A4 |10 31| D2 A3 |11 30| D3 A2 |12 29| D4 A1 |13 28| D5 A0 |14 27| D6 *ADREN |15 26| D7 RESET |16 25| *DBUSEN *INTREQ |17 24| OPREQ A14-D/*C |18 23| *R/W A13-E/*NE|19 22| WRP M/*IO |20 21| GND +--------+
Frequency
DIP40
Set reader to FREQ, put black probe to GND, red probe to 38 to measure CPU clock
External links
2650 page on Wikipedia
2650 page on CPU-World