|Memory Speed:||2.3 µseconds|
|Physical Address Size:||32KW (requires optional KM8-A)|
|Virtual Address Size:||4KW|
|Memory Management:||bank selection, CPU mode|
|Operating System:||OS/8, TSS/8|
|Price:||US$2.6K (CPU. 4KW memory, Operator's Panel)|
The PDP-8/A was DEC's last non-microprocessor PDP-8. The KK8-A CPU was a single hex board (M8315), which plugged into an OMNIBUS backplane. It supported both core main memory (MM8-AA, H219A/G649; and MM8-AB, H219B/G650) and semiconductor (MS8-A, M8311).
There were a number of options available for use with the -8/A, including:
- KM8-A Extended Option - main memory extension, time-sharing control, bootstrap ROM, etc
- DKC8-AA - front panel control, real-time clock, asynchronous serial line interface, parallel port, etc
- FPP8/A Floating Point Processor
The -8/A could use either an Operator's Panel, or a KC8-AA Programmer's Panel (similar to the KY11-LB); the latter required the DKC8-AA.
The -8/A came either as a kit of boards, or as a complete system including a chassis, power supply and backplane; in the latter form, there was a list of different configurations.
- PDP-8/A - documentation at Bitsavers
- PDP-8/A Miniprocessor Users Manual (EK-8A002-MM-002)
- PDP-8 Summary of Models and Options - What is a PDP-8/A?
|v • d • e PDP-8 Computers, Software and Peripherals|
|PDP-8s: PDP-5 • PDP-8 • LINC-8 • PDP-8/S • PDP-8/I • PDP-8/L • PDP-12 • PDP-8/E • PDP-8/F • PDP-8/M • PDP-8/A|