| Rockwell PPS-4
|
 Rockwell PPS4 in Sharp PC1001
|
| Developer |
Rockwell International
|
| Introduction date |
3Q, 1972
|
| Model |
10660
12660
|
| Clock |
256 kHz
|
| Bus Width |
4-bit
|
| Memory Specs
|
| Max Memory |
2KB
|
| Addressable |
4KB
|
| I/O Specs
|
| General Purpose IO |
31 ports[1]
|
| Packaging
|
| Package |
42-pin QUIL[1]
|
|
The Rockwell PPS-4 (aka PPS-4/1) was a 4-bit microprocessor designed by Rockwell International and first produced at the 3rd quarter of 1972.[1] The chip came in a 42-pin quadruple in-line package and was fabricated using metal gate technology as opposed to the Intel 4004 which used silicon gate technology. The PPS-4 was one of a handful of microprocessors introduced before 1975.[2][3] Various Gottlieb's pinball machines use the PPS-4.[3] Unlike the Intel 4004, the PPS-4 was produced and sold throughout the 1980s. Rockwell released a second generation version of the PPS-2 called PPS-4/2 in 1975.
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.
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 |
Black plastic, 42-pin QUIP
|
Instruction set
The PPS-40 came with a relatively large set of instruction.
References
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