# PDP-11 Simulator Configuration

The PDP-11 was the most popular 16-bit minicomputer. Introduced by DEC in 1970, it remained in active production until 1996. The PDP-11 family included many processor designs (photographs courtesy of Digital Equipment Corporation):

- 1970: PDP-11/20 - first design (also PDP-11/15)
- 1972: PDP-11/45 - first design with memory extension, instruction and data space, floating point (with fast bipolar memory, PDP-11/55)
- 1972: PDP-11/05 (also PDP-11/10)
- 1972: PDP-11/40 (also PDP-11/35)
- 1975: PDP-11/04 - first single board design
- 1975: PDP-11/34
- 1975: PDP-11/70 - first design using cache memory
- 1975: LSI-11 - first LSI design (also PDP-11/03, PDT150)
- 1977: PDP-11/60
- 1979: LSI-11/23 (F11)- second LSI design, first with floating point (also PDP-11/23, PDP-11/24, Pro 350)
- 1981: PDP-11/44 - last TTL design
- 1983: LSI-11/73 (J-11) - first CMOS design, last design (also PDP-11/53, PDP-11/73, PDP-11/74, PDP-11/83, PDP-11/84, PDP-11/93, PDP-11/94, Pro 380)

Option | Description | Capacity
CPU and memory | 19 models supported (Unibus and Qbus) | 16KB - 4MB
CPU options | Memory management unit (MMU) |
| Floating instruction set (FIS) |
| Floating point processor (FPP) |
| Commercial instruction set (CIS) |
| KE11-A extended arithmetic element (EAE, 11/20 only) |
| KG11-A communications arithmetic option |
Console | DL11 full duplex asynchronous interface |
Paper tape | PC11 paper tape reader and punch |
Real time clock | KW11L real-time clock |
| KW11P programmable real-time clock |
Card reader | CR11/CD11 card reader |
Line printer | LP11 line printer |
Asynchronous interfaces | DC11 asynchronous interface | 1-16 lines
| KL11/DL11 asynchronous interface | 1-16 lines
Terminal multiplexor | DZ11 multiplexor | 8-32 lines
| DHQ11 multiplexor | 8-32 lines
Floppy Disk | RX11/RX01 single density floppy disk | 256KB
| RX211/RX02 double density floppy disk | 512KB
Fixed head disk | RC11 fixed head disk | 64-256KW
| RF11 fixed head disk | 256-2048KW
Moving head disk | RK11/RK05 cartridge disk | 2.5MB
| RLV12/RL01-RL02 cartridge disk | 5-10MB
| RK611/RK06-RK07 cartridge disk | 13-26MB
| RH11-RH70/RM03, RM05 disk packs | 67-256MB
| RH11-RH70/RM80 non-removable disk | 124MB
| RH11-RH70/RP04 (RP05), RP06 disk packs | 87-174MB
| RH11-RH70/RP07 non-removable disk | 516MB
| RQDX3/RX50,RX33 floppy disks | .4-1.2MB
| RQDX3/RD51,RD52,RD53,RD54,RD31 disks | 10.8-155.6MB
| RQDX3/RA60,RA71,RA72,RA73,RA81,RA82,RA90,RA92 disks | 200-1960MB
DECtape | TC11/TU56 DECtape | 296KB
Cassette tape | TA11/TU60 cassette tape | 93KB
Magnetic tape | TM11/TE10 800bpi 9 track magnetic tape |
| TS11/TSV05 1600bpi 9 track magnetic tape |
| RH11-RH70/TM03/TE16,TU45,TU77 1600bpi 9 track magnetic tape |
| TQK50/TK50 TMSCP magnetic tape |
Network | DELQA/DEQNA Qbus Ethernet controller |
| DEUNA/DELUA Unibus Ethernet controller |

Updated 15-Jun-2008 by Bob Supnik (simh AT trailing-edge DOT com - anti-spam encoded)