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The Rockwell PPS-4/2 (PPS-4/2) was a 4-bit microprocessor designed by Rockwell International. The chip, which was the second generation of the PPS-4, first produced at the 3rd quarter of 1975.[1] The chip came in a 42-pin quadruple in-line package and was fabricated using metal gate technology.[2][3]
Contents
System
Similarly to the Intel 4004, the Rockwell PPS-4 required two additional support chips: a clock generator and ROM memory. The chip came in a 42-pin QIP package. 12 I/O terminals are available for general purpose I/O.
| Model | Description |
|---|---|
| PPS-4 | CPU |
| PPS-4/2 | CPU |
| 10706 | Clock generator |
| 10738 | Bus interface |
| 11049 | Interval timer |
| 10686 | General purpose I/O |
| 10696 | General purpose I/O |
| 10736 | dot matrix printer controller |
| 10788 | keyboard/display controller |
| 10789 | printer controller |
| 10815 | keyboard/printer controller |
| 10930 | Serial data controller |
| 15380 | dot matrix printer controller |
Versions
The PPS-4 came in two versions: 10660 and the 12660. The difference between the two is unclear.
| Manufacturer | Model | Package |
|---|---|---|
| Rockwell | PPS-4/2 | White ceramic, 42-pin QUIP |
| Rockwell | PPS-4/2 | Black plastic, 42-pin QUIP |
Instruction set
The PPS-40 came with a relatively large set of instruction.