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
	RH11/RH70 Massbus controllers	1-3
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
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
	RS03/RS04 Massbus fixed-head disks	256KW-512KW
Moving head disk	RK11/RK05 cartridge disk	2.5MB
	RL11(RLV12)/RL01-RL02 cartridge disk	5-10MB
	RK611/RK06-RK07 cartridge disk	13-26MB
	RM03, RM05 Massbus disk packs	67-256MB
	RM80 Massbus non-removable disk	124MB
	RP04 (RP05), RP06 Massbus disk packs	87-174MB
	RP07 Massbus non-removable disk	516MB
	RQDX3-UBA11/RX50,RX33 floppy disks	.4-1.2MB
	RQDX3-UBA11/RD51,RD52,RD53,RD54,RD31 disks	10.8-155.6MB
	RQDX3-UBA11/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
	TM03/TE16,TU45,TU77 Massbus 1600bpi 9 track magnetic tape
	TQK50/TK50 TMSCP magnetic tape
Network	DELQA/DEQNA Qbus Ethernet controller
	DEUNA/DELUA Unibus Ethernet controller

Updated 25-Apr-2022 by Bob Supnik (simh AT groups DOT io - anti-spam encoded)