The Gentry Collection
of
Mature Computers
and other
Technological Artifacts

This page started life as a simple text file which listed those machines, mostly from Digital Equipment Corporation (DEC) and mostly PDP-11s, which I had either acquired or assembled over the years. I have taken the time to reformat the file using HTML tags and have structured the information in tables. Since that time I have also begun acquiring other pieces of hardware, not necessarily from Digital.

So, although I wasn't planning on putting together a museum, it appears I now have one on my hands. No, it isn't a physical place which one can visit (it's my home, after all), but I plan on getting pictures up on this page to match the descriptions. And someday I hope to have the space to properly display the collection.

Some people have asked how I amassed this collection. I worked for Digital Equipment orporation from 1977 until its acquisition in 1998 by Compaq. During earlier years, Digital had a mechanism for employees to purchase computer equipment at greatly reduced prices because it was 1) old, 2) obsolete, 3) out of revision, or 4) just plain broken. Many of us salvage hounds obtained all sorts of boards and learned a lot about what went into machines like pdp-8s, pdp-11s and vaxen. One could expect to find just about everything needed to assemble a machine, given enough time and enough trips to salvage.

Well, salvage closed sometime in the 1980s, and many of those people I knew to have collected things eventually decided to discard them, which I encouraged them to do in my direction. Additionally, I have friends who worked for companies which discarded some stuff when they upgraded. I have also visited many a flea market and come away with interesting finds.

Finally -- yes, they do work (at least the majority of those included here). Except as noted, I have listed only those machines which I have actually working. In fact, a number of the machines (like the 11/93, the MV3100/10, the DS5000/200s, the DECpc433SE notebook and the AMD 5x86) are in use on a regular basis.

Museum Lobby

Items in my collection are listed in the following categories:

• Recent Acquisitions (various makes/models)
• Unibus PDP-11s(DEC)
• Qbus PDP-11s (DEC)
• Other PDP-11s (DEC)
• Vax Machines (DEC)
• Mips Machines (DEC)
• Pen-Based PCs (various makes/models)
• Portable PCs (various makes/models)
• Notebook PCs (various makes/models)
• Desktop PCs (various makes/models)
• Technological Artifacts
• Wish List

Information Desk

I've also got some additional information about the collection and my plans for some of it here:

• Hardware Projects
• Software Projects
• Notes

Reference Center

The following will be my reference center:

• Field Guide
  This file lists options and modules for PDP-11, VAX and MIPS machines. This document, formerly compiled and maintained by Ronald Copley, is now maintained by me. This copy may occasionally be different from copies found elsewhere on the net as it reflects the newer work I have done with it and any new entries. This will be the most up-to-date official copy at all times.
  [Last updated July 29, 2002]
• Visual Field Guide
  This site provides images of many Unibus and Qbus boards for use in identication.
• µNotes
  This file contains a series of single-topic articles written by Digital Equipment Corporation employees to explain topics relating to PDP-11s and Vaxen. This file contains the second set of 44 µNotes, written between 1984 and 1986. The first set, not yet available, comprised 115 µNotes, written in the late 70s to early 80s, some of which have been renumbered and reissued as part of the new µNotes.
• Moving Old Iron
  A series of papers describing the tools, techniques and procedures successfully employed to prepare and move old computer systems for purposes of collection and restoration.
  • PDP-8s and PDP-11/34a
  • KS10s

Other Collections

The following are other computer-related collections of mine:

• digital handbooks
  Lists those handbooks, published by digital, which I have in my collection.
• digital reference cards
  List those reference cards, maintenance cards, configuration sheets, etc., mostly published by digital, which I have in my collection.

Acquired: April 24, 1999

Moving Old Iron - A Series
KS10s

This picture above shows the three KS10 cabinets, the two TU77 tape drives and several of the RP06 disk drives which were a part of the configuration. Not pictured here are two line printers, two LA36 printing terminals, several PCs used as terminals and several yards of shelf space worth of documentation and code listings.

Many thanks to the people at the RetroComputing Society of Rhode Island (RCS/RI) for their assistance in the move of these machines, especially Carl Friend. Additional thanks go to the people at the Rhode Island Computer Museum (RICM) both for assistance in the move and for giving my decsystem-10 a home beside theirs.

Acquired: March 28, 1999

Moving Old Iron - A Series
pdp8s and pdp11/34a

• In the first cab, from top to bottom:
  • RX01
  • RL01
  • RL01
  • pdp-8/a
  • pdp-8/e
  • RL01
• In the second cab, from top to bottom:
  • TU56 DECtape
  • TU56 controller
  • Diablo disk controller
  • Data collection ports for Lab-8/e
  • Lab-8/e
  • Diablo RK05 compatible disk drive
  • Diablo RK05 compatible disk drive
  • unknown as of yet... suspect another Diablo controller
• In the third cab, from top to bottom:
  • Laboratory Peripheral System (LPS), UNIBUS option
  • pdp-11/34a
  • Diablo RK05 compatible disk drive
  • pdp-8/f
• DECwriter II
• Remix paper tape reader/punch
• Not pictured - VR14 display with light pen

• TC 200 Handheld Portable Terminal
  
  • Manufactured by IXO, Inc.
  • (apparently) Marketed by Digital Equipment Corporation (it has a logo)
  • LCD Display, 1 line of 16 characters
  • 5 x 7 font
  • Powered by 6 Vdc Lithium battery (PolaPulse)
  • RS232, full or half duplex
  • Apparently has an internal modem
  • Information I have received indicates it may have been used by Digital Field Service as a diagnostic tool for RA series diak drives

HX-20

Marketed by	Epson
Mounted in	Portable unit
CPU	Master - CMOS 8 bit 6301 Slave - CMOS 8 bit 6301
Clock Speed	Master - 614 KHz Slave - 614 KHz
Memory	16 Kbyte Ram, expandable to 32 Kbyte 32 Kbyte Rom, expandable to 64 Kbyte
System Bus	16-bit address, 8-bit data, control lines 40-pin external connector
Display	LCD, 120 x 32 dot-addressable 5 x 7 font Virtual width of 255 characters
Console	Integral keyboard 20 x 4 character LCD display
Misc	Integral printer, 24-column dot matrix impact Clock/calendar with alarm and interval timer MicroSoft BASIC Interpreter

HP 85

Marketed by	Hewlett-Packard
Mounted in	Desktop unit
CPU	HP Custom Chip
Clock Speed	613 KHz
Memory	16 Kbyte Ram, expandable to 32 Kbyte 32 Kbyte Rom, expandable to 80 Kbyte
Display	256 x 192 addressable
Tapes	tbd
Console	Integral 5" BW monitor, 16 x 32 Characters Integral keyboard Integral thermal printer Basic interpreter

Tandy 1400 HD

Marketed by	Tandy/Radio Shack
CPU	V-20
Clock Speed	4.77 MHz / 8 MHz
Memory	768 Kbyte
Disks	20 Mbyte hard drive 3.5" 720 Kbyte floppy
Display	Monochrome LCD, 80 x 25

DECmate III Plus

Marketed by	Digital Equipment Corporation
Mounted in	Table-top box (like VS2000)
CPU	Harris 6120 (pdp-8 look-similar)
Clock Speed	tbd
Bus type	Inter-board connections
Memory	tbd
Disks	5.25" floppy (capacity unknown at this time) 5.25" Winchester (capacity unknown at this time)
Console	VR201 monitor LK201 Keyboard

PDP-11/05

Marketed by	Digital Equipment Corporation
Mounted in	H960, DEC Corporate tall cab (6' x 19")
CPU	11/05
Clock Speed	tbd
Bus type	Unibus (16 bit address, 16 bit data)
Memory	64 Kbyte (56 Kbyte usable, 8 Kbyte I/O page) Core (MM11)
Disks	Controller Device RX211 RX02 8" double-density floppy RL11 RL01 5 Mbyte disk
Console	VT52
Modem	DF03
Misc	Controller Device TC11 TU60 (DECcassette) audio cassette storage PC05 PC11 High Speed paper tape reader/punch KW11-C Programmable Clock/Calendar (CSS option)

• The processor and box in this system was the first PDP-11 I bought outright from DEC. It was a refurbished machine I purchased back in 1980 for $1000 from TPL (Traditional Products Group). The rest of the machine was built from parts acquired from DEC Salvage.
• I used this machine to access (via a Anderson-Jacobson 300 baud modem) machines at work as well as the MIT-AI ITS system

• This system originally had an LSI-11/03 processor in it (as it was built from the Heathkit kit). Since that time, I have replaced that CPU with the 11/53+ CPU.
• I still have an LSI-11/03 CPU board to be used to restore the box to the original state as built.

11/53+

Mounted in	BA11-N
CPU	KDJ11-D (Harris/Digital DCJ-11 Chip)
Clock Speed	18 Mhz
Bus type	Qbus (22 bit address, 16 bit data), 3 Mbyte/sec
Memory	1.5 Mbyte (onboard) expandable to 4 Mbyte on the bus
Network	DELQA Ethernet Adapter (10Base2 port)
Disks	Controller Device KFQSA (Qbus to DSSI adapter) RF30 (150 Mbyte) RF31T (~300 Mbyte) RF71 (800 Mbyte) RQDX3 RD54 (159 Mbyte)
Console	VT62

• This system is used as a testbed for boards and disks. At the time the picture was taken, the configuration of the machine did not match what is listed in the above table.

• Beginning in the late 1970s and continuing until the mid-to-late 80s, this system was used once a year as the computer gaming system at a regional science fiction convention, Boskone, held in Boston.
• During the above time, this was my primary home system for RT-11 development.
• This was also my primary development machine for the RT-11 Ethernet File Transfer Program, and was named VISAR, after a computer system in a James Hogan novel.
• This system runs RT-11, RSTS and MicroRSX

• During the late 80s and early 90s, this system was my primary home system for RT-11 development. Several full RT-11 builds were performed on this system.
• This system runs RT-11, TSX+ and 2.11BSD

11/83plus

Mounted in	BA123
CPU	KDJ11-B (20 MHz Harris/Digital DCJ-11 Chip w/FPA Chip)
Clock Speed	20 Mhz
Bus type	Qbus (22 bit address, 16 bit data), 3 Mbyte/sec
Memory	4 Mbyte (2 x MSV11-J PMI) (Maximum)
Network	DELQA Ethernet Adapter (10Base2)
Disks, Internal	Controller Device RQDX3 RD54 (159 Mbyte) RD54 (159 Mbyte) 2 x RX33 Andromeda ESDC Hitachi DK515-78 (770 Mbyte)
Disks, External	Controller Device KFQSA (Qbus to DSSI adapter) RF71 (800 Mbyte) RQDX3 RD54 (159 Mbyte)
Tape	Controller Device TQK50 TK50
Console	VT340
Misc	DHV11 8-line Serial Asynchronous Mux KXJ11-C Harris/Digital DCJ-11 Chip based Coprocessor Bridge-86 8086-based coprocessor w/128 Kbyte onboard memory

• This system runs RT-11, TSX+ and 2.11BSD

11/93

Mounted in	BA123
CPU	KDJ11-E (Harris/Digital DCJ-11 Chip)
Clock Speed	Unknown
Bus type	Qbus (22 bit address, 16 bit data), 3 Mbyte/sec
Memory	4 Mbyte (onboard) (Maximum)
Network	DELQA Ethernet Adapter (10Base2 port)
Disks, Internal	Controller Device RQZX1 RZ26 (800 Mbyte) RZ25 (425 Mbyte) RX33 RQDX3 RD54 (159 Mbyte) RD54 (159 Mbyte) RX50
Disks, External	Controller Device Andromeda ESDC Hitachi DK515-78 (770 Mbyte) KFQSA (Qbus to DSSI adapter) RF71 (800 Mbyte)
Tape	Controller Device RQZX1 TZ30
Console	VT340
Misc	DHV11 8-Line Asynchronous Serial Mux KXJ11-C Harris/Digital DCJ-11 Chip based coprocessor Bridge-86 8086-based coprocessor w/128k onboard memory

• This system runs RT-11, TSX+ and 2.11BSD.
• Nowadays, this system serves as my primary development machine for the numerous midnight projects I have in the works.

• This machine is a proto. It was originally designed and intended to be used by DEC field service to diagnose qbus pdp-11 and uVax systems. Probably because of its weight, it didn't work out.
• This machine originally came with an LSI-11/2 processor. I have since replaced the LSI-11/2 with a KDJ11-A (11/73A) processor board.

• This machine was obtained as part of a DEC offering to employees designed to give them a chance at having a home computer. It resulted in lots of network mail traffic within the company, and the formation of a broad spectrum mailing list - The Small Systems Digest. I was the last (and longest-serving) moderator of the list.
• As received, this machine had the standard LSI-11/2 chipset. At some point I upgraded it to include EIS/FIS.

MicroVax 2000 (MV2000)

Mounted in	Desk-top box
CPU	KA42-A
Clock Speed	tbd
Bus Type	Inter-board connectors
Memory	14 Mbyte RAM (Maximum), 2 Mbyte on mother board 12 Mbyte on daughter board
Network	Integral Ethernet Adapter (10Base2 port)
Disks	Integral MSCP Disk controller Internal RD54 (159 Mbyte)
Tapes	Integral SCSI Tape controller External TK50
Console	Generally a laptop
Misc	3 async serial lines

VaxServer 3100 Model 10

Mounted in	Table-top box
CPU	KA41
Clock Speed	tbd
Bus Type	Inter-board connectors
Memory	24 Mbyte RAM (Maximum), 32-bit wide
Network	Integral Ethernet Adapter (10Base2 port)
Internal Disks	Integral SCSI adapter (Bus A) 2 x RZ24 (209 Mbyte each) 1 x RZ25 (425 Mbyte)
External Disks	Integral SCSI adapter (Bus B) RZ57 (1.0 Gbyte) RZ58 (1.3 Gbyte) RX26 3.5" Floppy
External Tape	Integral SCSI adapter (Bus B) TLZ04
Console	VT420
Misc	2 integral serial lines (Multiplexed) option board providing 8 Asynchronous serial lines x(?) Synchronous Serial line(s)

VaxStation 3600
(closest designation since it is such a mongrel)

Mounted in	BA213
CPU	KA650
Clock Speed	tbd
Bus Type	Qbus (22 bit address, 16 bit data)
Memory	48 Mbyte (3 x MS650) expandable to 64 Mbyte 32-bit wide private memory bus
Network	DESQA Ethernet Adapter (10Base2 port)
Disks	RQDX3 RD54 (159 Mbyte) KFQSA (Qbus to DSSI adapter) 2 x RF70 (400 Mbyte) RF73 (2048 Mbyte)
Tape	TQK50 TK50
Display	VCB02 (QDSS) 8-plane Color Graphics Adapter
Console	VR261 Color Monitor LK201 Keyboard
Misc	CXA16 16-line Asynchronous Multiplexor

DecStation 5000 Model 200

CPU	MIPS R3000
FPU	MIPS R3010
Clock Speed	25 MHz
Bus Type	TurboChannel
Memory	128 Kbyte Cache (64 Kbyte Instruction, 64 Kbyte Data) 232 Mbyte RAM, expandable to 448 Mbyte 1 Mbyte NVRAM (Presto)
Network	Integral Lance Ethernet Adapter (10Base2 port) Turbochannel FDDI (PMAF-FA)
Disks	Integral SCSI Adapter DEC RZ26 (1 Gbyte) DEC RRD42 CDRom DEC RZ25 (425 Mbyte) DEC RX23 Bernoulli 90 (90 Mbyte)
Display	Turbochannel Color Graphics adapter (PMAGB-B)
Console	VR261 Color Monitor LK201 Keyboard Puck mouse
Misc	Turbochannel AV board (AV01B) DecAudio box

• I'm having problems with this machine - when I added the extra memory, the system ceased to boot directly to the C: prompt... it now gets stuck after booting from the internal ROM D: drive
• Also, I am very interested in any other options for this unit, such as the external 3.5" diskette.
• This machine is currently in pieces as I try to discover why the backlit LCD screen is no longer backlit.

DECpc 320p

Marketed by	Digital Equipment Corporation
CPU	Intel 80386
FPU	Intel 80387
Clock Speed	20 MHz
Memory	2 Mbyte RAM Integral, 4 Mbyte RAM (option), 6 Mbyte total, expandable to 8 Mbyte
Disk	80 Mbyte internal 1.44 Mbyte 3.5" floppy
Display	Integral Backlit Monochrome LCD (VGA)
Misc	4800/9600 bps Fax/Modem VGA video port Parallel port Serial port Keyboard port

DECpc 320p

Marketed by	Digital Equipment Corporation
CPU	80386
FPU	80387
Clock Speed	20 MHz
Memory	2 Mbyte RAM Integral, 6 Mbyte RAM (option), 8 Mbyte total (Maximum)
Disk	80 Mbyte internal 1.44 Mbyte 3.5" floppy
Display	Integral Backlit Monochrome LCD (VGA)
Misc	9600/4800 modem/fax VGA video port Parallel port Serial port Keyboard port

DECpc 433 SE Color

Marketed by	Digital Equipment Corporation
CPU	80486
Clock Speed	33 MHz
Memory	2 Mbyte RAM Integral, 16 Mbyte RAM (option), 20 Mbyte RAM total (Maximum)
Disk	528 Mbyte internal 1.44 Mbyte 3.5" floppy
Display	Integral Backlit Color LCD (VGA)
Misc	VGA video port Parallel port Serial port Keyboard port Integral trackball pointing device Iomega ZIP disk (external) PCMCIA port (Type III) 14.4 Kbps Fax/Modem CDrom

AMD 5x86-based PC

Mounted in	Tower Case
CPU	AMD 5x86-133
FPU	Integral
Clock Speed	133 MHz Chip, overclocked to 160 Mhz
Bus Type	VESA/ISA/PCI bus, 40 MHz
Memory	128 Mbyte EDO Ram
Network	ISA EtherLink III (3c509)
Disks (internal)	Integral dual EIDE 3.5 Gbyte 1 Gbyte 810 Mbyte 24x ATAPI CDROM Integral FDC 3.5" 2.88 Mbyte Floppy ISA SCSI Adapter (Adaptec AHA-1540CF) 1 x 320 Mbyte 2 x 1.05 Gbyte 1 x 500 Mbyte
Disks (external)	(off AHA-1540CF, above) DEC RWZ21 128 Mbyte Magneto-Optical drive
Display	2 Mbyte PCI VGA/EGA Graphics Adapter (Cirrus 5440) CTX 1541 Color Monitor
Sound	Tropez 32 voice
Misc	2 Serial (integral) (COM1/COM4) 1 Parallel (integral) 1 Keyboard (integral) 57.6 Kbps ISA Fax/Modem (COM2) ISA PCMCIA adapter (2 x Type II)

This picture is outdated - my current home systems are:

• a Compaq Presario 5280 (1GHz AMD Athlon) with 768Mb of memory and 70Gb of disks. This system dual-boots W/ME and RedHat Linux 7.3
• a DEC Alpha Personal WorkStation (PWS) 500au. 500MHz Alpha 21164 chip (EV56) with 384Mb of memory and 43Gb of disks. This system dual-boots Compaq Tru64 Unix (formerly Digital Unix, formerly DEC OSF/1) and RedHat Linux 7.2/Alpha. I have a 4 x 4.3Gb RAID-0 array setup.

I use a KVM unit to switch between the two units.

My home network consists of DSL feeding a Compaq CP-2W 4-port, with wireless access point, router/hub. Two ports are attached to the above-mentioned machines. A third port connects to my partner's machine. The fourth port connects to a 10BaseT to 10Base2 converter and to a segment of ThinWire Ethernet. Attached to this are a Roamabout access point (used by three laptops), a DS5000/260, a VS3100/M10 and a PDP-11/93. The Wireless access point on the CP-2W provides network access for my iPAQ.

• Slide Rule (obligatory for such a list)
• Texas Instruments Speak 'n Spell
• Calculators
  • Texas Instruments TI-74 BasiCalc Calculator
  • Texas Instruments TI-95 ProCalc Calculator
  • Hewlett-Packard HP-67 RPN Programmable Calculator
  • Hewlett-Packard HP-48GX RPN Programmable Graphing Calculator
• Modems
  • Anderson-Jacobson AJ300 300 Baud acoustic coupler
  • Digital Equipment Corporation DF02 300 Baud Modem
  • Digital Equipment Corporation DF03 1200 Baud Modem
  • Zoom 1200 baud Fax/Modem
  • Digital Equipment Corporation DF224 Scholar Plus 2400 Baud Modem
  • Telebit Trailblazer (T2500) Fax/Modem
• Terminals
  • Digital Equipment Corporation VT52 Video Terminal
  • Digital Equipment Corporation VT62 Video Terminal
  • Digital Equipment Corporation VT100 Video Terminal
  • Digital Equipment Corporation VT125 Video/Graphics Terminal
    Implements REGIS (Remote Graphics Instruction Set) Graphics
  • Digital Equipment Corporation VK100 Video/Graphics Terminal/Computer (aka GIGI)
    Implements REGIS (Remote Graphics Instruction Set) Graphics
    (attached to Barco GD33 Color Monitor)
    Integral BASIC
  • MicroTerm Inc MIME 2A
• Printers
  • Digital Equipment Corporation LA50 Printer
  • Digital Equipment Corporation LA120 Printing Terminal
    APL Character set ROMs installed
  • Digital Equipment Corporation LA210 Printer
  • Texas Instruments MicroWriter Laser Printer
• Networking
  • Racal-Interlan Model 8-2-1
    Multiport Transceiver
  • Digital Equipment Corporation DECserver 200/MC
    8-line LAT terminal server with modem control
  • Digital Equipment Corporation DECserver 300
    16-line LAT terminal server
  • Digital Equipment Corporation DECserver 90L+
    8-Line LAT terminal server
• Miscellaneous
  • Digital Equipment Corporation DTC01 DECtalk
    text to speech device
  • Digital Equipment Corporation MiniExchange
    8-Line serial switch
  • EasyPhoto ImageWave Flatbed Color Scanner
  • Heathkit Oscilliscope
  • Heathkit Model 10-10 DC Oscilliscope
  • Tektronix Model 611 Storage Display
  • Tektronix 453 Dual-Trace Triggered Sweep Oscilloscope
  • Canon PowerShot 350 Digital Camera (used to take the photographs on this page)
  • Graphlex Speed Graphic 2.25" x 3.25" camera (with case and attachments)
  • Graphlex Speed Graphic 4" x 5" camera
  • Kodak Bellows Camera (uses 620 film), KODO No. 0?
  • JVC Color Monitor, Model TM-22U
  • Casio CZ-101 Synthesizer
  • Roland MSQ-100 Sequencer/Digital Recorder
  • Sony TC-254-4
    4-channel Reel-to-Reel tape recorder w/RM16 remote console
  • Timex Sinclair 1000
  • Heathkit ET-3400 Electronics Trainer
  • Racal-Dana Series 9500 Universal Timer/Counter
  • Sorenson SAL 20-12 Power Supply

• Making room at home for my latest acquisitions - pdp-8s and pdp-11/34
  
  • Done - The move was accomplished on March 28th, 2000, with the assistance of a friend. A picture of the systems as they were when I went to pick them up can be found in my recent acquisitions section. A writeup of the move, with pictures is available.
• Upgrading the AMD 5x86 system with an Adaptec AHA-1540CF
  
  • Done - In the process, I found that although the AHA-1540B that I was using was capable of 8 Mbytes/sec, it had been configured for only 5 Mbytes/sec. The AHA-1540CF I have installed is capable of 10 Mbytes/sec, which is the speed I am now using.
• Upgrading the AMD 5x86 system with another 800 Mbyte IDE drive.
  
  • Done - now I can get on with the next item on the list
• Upgrading the AMD 5x86 system by removing the 320 Mbyte SCSI disks and replacing them with something larger (capacity) and smaller (formfactor) when I can.
  
  • Done - I have replaced them with two 3.5" 1.05 Gbyte SCSI disks. I have also added another cooling fan to the case.
• Taking pictures of the collection for inclusion on this page
  
  • In Progress
• Upgrading the AMD 5x86 system to a new motherboard and a Cyrix 6x86 P166 CPU
• Upgrading the Intel 486DX2/66 system by replacing the CPU with an AMD 5x86-133
• Building a new AMD 5x86-133 based system
• Obtaining documentation for an Evans and Sutherland PCI VGA board, a RealVideo 1000-class board and determining if it can be used on my AMD 5x86 system.
  
  • Partially done - I have determined that the board as-is can be used as a VGA display board, but it lacks the memory for the 2D/3D functions (but then again, I lack the software to make use of it.
• Locating some documentation for some Megalink boards so that I might be able to write some code for them -- they supposedly would provide a high-speed interprocessor communications link (I only have two sets of boards, no cables and no docs)
• Locating some documentation for some other boards which I believe are video capture boards originally used in some robotic application. I'd like to see if I can do some video capture with them.
• I may be able to get a couple more BA23 boxes... if so, I'll be expanding the network. I'm out of terminals, so I may have to start using one of my MiniExchanges to switch the terminals I have between the systems.

• A PDP6/KA10 emulator, written in C, based on the Simulation Controller Program written by Bob Supnik for his package of emulators.
• The RTEFTP Ethernet File Transfer Program for RT-11.
• An Ethernet sniffer/dumper for RT-11
• Writing a Digital Unix peer for RTEFTP
• Writing a Linux peer for RTEFTP
• Writing an RSX peer for RTEFTP

• A digicomp I
  • Almost but not quite - Numerous DIGI Comp I kits were recently offerred by individuals on eBay, but in both cases, I was unable to post a winning bid... one went for $250+, the other $450+.
• A pdp-10 of some sort (I wish I had room for a KA or KI, but I don't. I barely have room for a KS10, but I'd take one if a working one was available.
  • Fulfilled - on April 24th, I took possesion of one of a set of three KS10s which were being decommissioned. A team of people dismantled the machines and loaded them into trucks for relocation to new homes. The Rhode Island Computer Museum has graciously offered to host mine at their location. You can read a report of the move, with pictures.
• Software which will run on a PDP-6 and/or KA-10 -- in order to test my emulator
• An lsi-11/03 card and a WCS card for it (I have some WCS software)
  • Partially Fulfilled - in the weeks leading up to the March 28th acquisition of the pdp-8s and pdp-11/34a (which you can read about here), I took possession of several boxes of spares boards. Among the spares was an LSI-11/03 CPU board.
• A way of getting my home site up on the net 24/7 so that I can start making a lot more information relating to pdp-8s, pdp-11s and pdp-10s available.

• Most of the running Qbus systems, the Vaxen and the MIPS machines are on thinwire.
• The Qbus machines mostly run RT-11 and use my RTEFTP program for distributed time and for file transfers. I am working on installing copies of PDP-11 OSes (RSTS, RSX, Ultrix-11, 2.11BSD) on various Qbus machines.
• The Vaxen run Ultrix and use standard TCP/IP for communication. These systems may be transitioned to running NetBSD when I have the time.
• The MIPS systems run Ultrix and use standard TCP/IP for communications. They are networked back-to-back via FDDI and to the rest of the systems via 10base2. These systems may be transitioned to running NetBSD when I have the time.
• The notebooks and portable PCs run Windows for Workgroups (WfW3.11).
• The desktop PCs are dual-booting between W95 (yuck) and RedHat Linux. They use standard TCP/IP for communication with the other systems.
• I have numerous spares for most of the boards used in my Qbus machines (both pdp-11 and uVax. I also have some spares for boards used in my UNIBUS machines.

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All photographs on this page are Copyright © 1999 by Megan Gentry, All Rights Reserved.
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