GXEmul

GXEmul simulates a DECstation 5000/200 "3MAX" workstation. This features a 25MHz MIPS R3000 CPU and R3010 chipset.

Please be aware that GXEmul is not a cycle-accurate simulation of the DECstation 5000, nor does it simulate peripheral hardware to any great degree of accuracy. This list is mostly for information purposes.

Memory

Processor	DECsystem 500 Models 25/33/50	DECsystem 5000 Models 133/150	DECsystem 5000 Models 200/240/260
Prestoserve		1	1

I/O

Processor	DECsystem 500 Models 25/33/50	DECsystem 5000 Models 133/150	DECsystem 5000 Models 200/240/260
Adapters	2 DEFZA	3 DEFZA	3 DEFZA
VME	1	1	1
TURBOchannel Extender	1	1	1
SCSI	2 PMAZ	3 PMAZ	3 PMAZ
Ethernet (Thick)	2 PMAD	3 PMAD
CI			1 CITCA¹⁰

Disks

Processor	DECsystem 500 Models 25/33/50	DECsystem 5000 Models 133/150	DECsystem 5000 Models 200/240/260
Units	21 maximum⁵	28 maximum⁵	28 maximum⁵
Controllers
Drives	RRD40^L	RRD40^L	RRD40^L
	RRD42^L	RRD42^L	RRD42^L
	RX23^D	RX23^D	RX23^D
	RX26^D,6
	RX33^D	RX33^D	RX33^D
	RZ23^D	RZ23^D	RZ23^D,9
	RZ24	RZ24	RZ24⁹
	RZ24L	RZ24L	RZ24L⁹
	RZ25	RZ25	RZ25
	RZ26	RZ26	RZ26
	RZ55	RZ55	RZ55
	RZ56	RZ56	RZ56
	RZ57	RZ57	RZ57
	RZ58	RZ58	RZ58

Magnetic tapes

Processor	DECsystem 500 Models 25/33/50	DECsystem 5000 Models 133/150	DECsystem 5000 Models 200/240/260
Controllers	TK50Z^L,11	TK50Z^L,11	TK50Z^L,11
	TKZ08	TKZ08	TKZ08
	TKZ09	TKZ09	TKZ09
	TLZ04	TLZ04	TLZ04
	TLZ06	TLZ06	TLZ06
	TSZ05	TSZ05	TSZ05
	TSZ07	TSZ07	TSZ07
	TZ30^L,11	TZ30^L,11	TZ30^L,11
	TZK10	TZK10	TZK10
	TZ85^L,11	TZ85^L,11	TZ85^L,11
	TZ857^L,11,12	TZ857^L,11,12	TZ857^L,11,12

Communications

Processor	DECsystem 500 Models 25/33/50	DECsystem 5000 Models 133/150	DECsystem 5000 Models 200/240/260
Devices	0 line async⁷	1 line async	1 line async

Modem/PAD

Processor	DECsystem 500 Models 25/33/50	DECsystem 5000 Models 133/150	DECsystem 5000 Models 200/240/260
Devices	DF03	DF03	DF03
	DF112	DF112	DF112
	DF212	DF212	DF212
	DF224	DF224	DF224
	DF242	DF242	DF242
	DF296	DF296	DF296

Line Printers

Processor	DECsystem 500 Models 25/33/50	DECsystem 5000 Models 133/150	DECsystem 5000 Models 200/240/260
Units	2 maximum⁷	2 maximum	2 maximum
Serial Printers	LA36	LA36	LA36
	LA50	LA50	LA50
	LA100	LA100	LA100
	LA120	LA120	LA120
	LA210	LA210	LA210
	LCG01	LCG01	LCG01
	LG02	LG02	LG02
	LG31	LG31	LG31
	LJ250	LJ250	LJ250
	LN03	LN03	LN03
	LN03R	LN03R	LN03R
	LN03S	LN03S	LN03S
	LQP02	LQP02	LQP02
	LQP03	LQP03	LQP03
	LVP16	LVP16	LVP16
	DEClaser 1100/1150⁸	DEClaser 1100/1150⁸	DEClaser 1100/1150⁸
	DEClaser 2100/2150⁸	DEClaser 2100/2150⁸	DEClaser 2100/2150⁸
	DEClaser 2200/2250⁸	DEClaser 2200/2250⁸	DEClaser 2200/2250⁸
	DEClaser 3200/3250⁸	DEClaser 3200/3250⁸	DEClaser 3200/3250⁸

Asynchronous Terminals

Processor	DECsystem 500 Models 25/33/50	DECsystem 5000 Models 133/150	DECsystem 5000 Models 200/240/260
Units	2 maximum⁷	2 maximum	2 maximum
	VT100 series	VT100 series	VT100 series
	VT200 series	VT200 series	VT200 series
	VT300 series	VT300 series	VT300 series
	VT420	VT420	VT420
	VT500 series	VT500 series	VT500 series
	DECmate II/III	DECmate II/III	DECmate II/III
	Rainbow 100B	Rainbow 100B	Rainbow 100B
	Rainbow 100+	Rainbow 100+	Rainbow 100+
	Rainbow 190	Rainbow 190	Rainbow 190
	PRO 350/380	PRO 350/380	PRO 350/380
	VAXmate	VAXmate	VAXmate

Notes

Letter D = Data device only, Letter L = Valid ULTRIX load device.
Although there are four ports, ports 1 and 2 are not available. Port 3 is system console. Port 4 is available for printer or modem.
The modems must be configured such that the Forced DSR attribute is NOT set on the modem. If the Forced DSR attribute is set, the modem will be unable to recognize loss of connection, and may incorrectly assume that a connection has been established. Consult the modem’s Owner’s Manual for specific information on clearing the Forced DSR option.
The SCSI (Small Computer System Interface) cable length is limited to six meters, thereby limiting the number of external devices (tapes and disk) that can actually be attached to the system per bus.
Disk and tape devices are connected to the DECsystem and DECstation via SCSI (Small Computer System Interface). There is one integral SCSI controller and, optionally, up to three more SCSI controllers may be added. Each SCSI controller will support up to seven devices in any combination. Each controller has an identifier which can be set via the DS5000 Console Interface (the factory default is id6). Each added device must have its own unique identifier which must not conflict with any other device on its bus including the SCSI controller. The SCSI controller should always have the highest id.
On the DECsytem 5000 Model 25/33/50, the RX26 device may either be FDI-based, in which case it is integral in the system; or SCSI-based, in which case it is a separate device.
The DECsystem 5000 Model 25/33/50 has one general purpose asynchronous/synchronous serial interface on the system module. A TURBOchannel-based serial connector would be needed if more serial lines are required.
DEClaser support is equivalent to that which is available for the LN03, LN03R, and LN03S printers.
The RZ23, RZ23L, RZ24 and RZ24L devices are supported via the TURBOchannel Extender (TcE) box.
Disks and tapes supported on the CITCA are those CI devices already supported on the DECsystem 5800 series platforms, e.g. ESE20, TAxx tapes, RAxx disks and HSCxx controllers. Devices connected to CITCA are supported as data devices only.
Accepts TK50 distribution media.
Automatic stack loader tape drives are supported only by the dump, restore, and cpio system utilities.


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Created:	9 May 2026

DECstation

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