# PDP-9 Simulator Configuration

The PDP-9, introduced in 1967, was DEC's fourth 18-bit computer system. It was upward compatible from the PDP-7, introducing a more advanced form of memory management. A cost-reduced version, the PDP-9/L, was introduced in 1968.

Photographs:

- PDP-9 (courtesy of Digital Equipment Corporation)

Option | Description | Capacity
CPU and memory | PDP-9 | 4KW - 32KW
CPU options | KE09A EAE, extended arithmetic element |
| KG09A memory extension control |
| KP09A power fail detection |
| KX09A memory protection control |
Console | KSR-33 Teletype |
Additional terminals | LT09 and KSR-33 Teletypes | 1-4 lines
Paper tape | PC09A paper tape reader and punch |
Real time clock | integral |
Line printer | Type 647E line printer (sixbit ASCII) |
| LP09 line printer (sevenbit ASCII) |
DECtape | TC02/TU55 DECtape | 148KW
Disk | RF09/RS09 fixed head disk | 2.1MW
| RB09 fixed head disk | 1MW
Magnetic tape | TC59 magnetic tape (9 track only) |

Updated 30-Jan-2007 by Bob Supnik (simh AT trailing-edge DOT com - anti-spam encoded)