Montgomery's Mothballed Microprocessor Museum

A document about the computers in my collection.

(As of January 27, 1997)


The Computers:

MITS Altair 8800:

8080 based. Complete with manuals, color glossy photos, and the November 1974 Popular Electronics magazine which first debuted it. With 2 WORKING Altair 4K cards (heavily reworked), and a current-loop (Teletype) interface card. Works great for playing 'catch the dot', but you have to program it from the switches on the front panel. I have not run this machine in years. My teletype is in great need of repair and I’d have to make a current loop interface for one of my more modern computers to even talk to it.

MITS Altair 680:

6800 based. Tiny system with a homebrew add-on box for expansion. It works but I have no docs.

Apple ][:

6502 based. I've got a box full of stuff for this one. Installed in the system is 64K of RAM, an 80 column card, and a floppy disk controller. Has 2 floppy drives and I have lots of game software.

Apple IIIplus:

6502 based. Complete system with hard and floppy drives, III monitor, all original docs and a set of Apple business software. Part of the keyboard is dead (bad connection?) but loads and runs everything fine (as long as you don't need any of the keys on the upper right side of the keyboard).

Apple Lisa:

Apple Macintosh: (X2)

68000 based. I have the 128 and 512K boards, external drives, the white plastic box that has all the 'Introduction to the Macintosh' disks and the cassettes that you played in sync to the on-screen demo while Windham Hill music played behind the announcer (now that was multimedia!).

Apple Macintosh SE:

6800 based. The MAC SE can contain up to 4 megabytes of RAM and has a SCSI interface.   A slow, but very nice little machine.

Processor Technology SOL:

8080 based: Truly a work of art! Low profile S-100 CP/M system with wooden side panels. This system has 2 Micromation 8 inch single sided floppy drives in a huge blue (matching) case with wooden side panels. This system has a music card and can belt out some great (and not so great) music form the 60's and 70's in 4 note polyphony. Full 64K system with full docs and many add-on's. This system could change its basic operation by changing   'personality cards' that could be changed without having to open the case.

IMS Associates Inc. IMSAI 8080: (X3)

As with most any 'running' S-100 system, none of these are pure IMSAI. However, I have almost every card that IMSAI made. Such as the MPU-A (8080), MPU-B (8085, a favorite of mine), floppy cards, RAM cards, ROM cards, Video cards I/O cards, etc. My main (still set up and running) system has California Computer Systems (CCS) Z-80 processor board and the dual (5" and 8") floppy card along with 2 8" double sided Shugart drives, Godbout EPROM programmer, CompuPro 64K STATIC RAM card and I/O card. 2 of the IMSAI chassis have the full front panels while the last has provision for 2 5.25" floppy drives. I'm using Heath H-19 terminals on all my big S-100 hardware.

IMS Associates Inc. IMSAI VDP-40:

8080 (MPU-A) based. This thing is a monster. it has a 9 inch display, a full keyboard, and 2 5.25" floppy drives mounted in what looks like the standard blue S-100 box that’s been tipped up in the front and had the extra stuff wedged in. The system is 100% operational and I have the Docs. NorthStar Horizon: (X2)

NorthStar Horizon:

I went to the NorthStar service training schools so I have every manual and diagnostic disk (10 HARD sectored!) for the NorthStar Horizon and the 'Advantage'. Like the IMSAIs, I have many boards for these.

Osborne 01: (2 systems)

100% working with all the docs and much software. With the 'double-density' kit and the 80 column card. I used to use this one a lot. When it would give me trouble I would have to open it up (no small matter) and re-seat all the connectors. Fixed it every time! The second one I picked up at a local swap meet not long back. It’s 01 in an Executive case, but it still has the small screen so it must have been a late model 01. I think I paid $10-$15 for it. It was late at the swap (late at a swap meet is 10AM), and it was just sitting there all by itself looking dirty and pathetic. I knew if I didn’t buy it, it would get trashed (If I had any less will power my house would be full of stray cats and dogs too). A little 409 cleaner and some minor adjustments and re-seating of parts and it came right up, so both the 01 and I are happy.

Osborne Executive:

A real move up from the 01. Larger (amber) screen, more professional looking, really nice system. Includes all original docs and many applications that were packaged with the system.

Otrona Attache: (X3)

Soon to be 2 (one is really beat up and doesn't work very well). The Otrona came with a fast (4Mhz) Z-80 processor, 2 5.25" drives and a tiny CRT. All built into a box that that looked more like a oscilloscope than a computer. It ran CP/M, but with the addition of an add-in card could also run 8086 programs. To that you could add another card and it became a rather good These were really the love of my friend Bob who paid the full price for one of these machines ($3K?) The other 2 came from swap meets. I have all the docs and many extras. The 'good' system I got from Bob lives in its padded traveling case under my desk.

Radio Shack TRS-80: (X2)

Z-80 based. 2 systems with the expansion interfaces, monitors, drives, cables, add-ons, etc etc.. These have got to be some of the most patched computers ever made. I don't know anybody who didn't need to jury-rig the hell out of them to get them to work. Small fortunes were made by people selling 'fix' boards just to get these things to do what they were supposed to. I even have one of those thermal foil drum printers (yuck).

Texas Instruments TI 99-4A: (X2)

TMS-9000 based. One of these is brand new in the box, where I expect it to stay. I have extra carts, but no drives. Both work.

BBC Computer Acorn UNB 09:

6502 based. I have a small 'quick command' booklet on this but nothing else. It runs (comes up in BASIC), but I know very little about it. System only.

Sinclair ZX-80:

The $99 kit computer. A Z-80 that had to do everything because it had almost no hardware. Molded white case with a blue 'keyboard'. With original docs.

Sinclair ZX-81:

Pretty much the same as the ZX-80 but in a black case. Extra 16K RAM card, Games and 'Power Pack' on cassette, several books, original manuals.

Timex/Sinclair 1000: (X2)

This was the one you could get at Pay-Less for $49 and send in a rebate coupon for $50. Thanks to Gene Olfield, the "Robot Doctor", I have a bunch of books, RAM modules, and all sorts of parts for the Sinclair line.

Commodore Pet 2001: (X2)

6502 based. In a really ugly case that was only surpassed by the tiny keyboard with all the keys in straight vertical rows! One of these was my first 'plug-n-play' computer. It ran basic and locked up a lot. I have all the Commodore in-house manuals and diagnostics. These systems, along with the later model CBM were running but I disassembled all 3 to save space.

Commodore Commodore CBM:

6502 based, Full KB version with extra ROMs and disk drive interface. Works. Also disassembled to save space.

Commodore VIC 20: (X2)

6502 based. The 20 wasn't good for much besides games. I have a number of carts and a few cassettes. One of the 20s is not working.

Commodore C-64: 

(several, but I'll only count them as 1) 6502 based: I have the original box. I have tons of diskettes and several  working disk drives. Lots of docs too.

Commodore C 128

This system is actually backwards compatible with the C64. This machine was donated to the museum by Bob and Lois Weist. It belonged to their daughter who used it in college. She was handicapped and was unable to press more than one key at a time. The college made an adapter for the ‘control’, ‘shift’ and ‘C=’ keys.


Commodore Amiga 1000: (X2)

68000 based. One heck of a system. These things were doing sound and graphics way before Apple and the IBM's. Good stuff too. Too bad Commodore had been such a stupid company when it came to the Amiga. I feel if it wasn't for the Toaster and other video add-in devices the Amiga would be long gone, but now it's just recently gone. I don't know why I have 2 of these....  I broke one and now it won't boot. 8^(

Atari 1200XL: (X2)

Thanks to Bill Archbold's wife's father I have a very complete collection of parts for this system. Of the second system, I have just the computer and the power supply. What can you expect for $5?

Ampro Little Board plus:

Z-80 Single Board Computer. This is really a great little system! CP/M - ZCPR-3 operating system. This board mounts onto the side of a 5.25" drive and can use a SCSI hard drive. Complete with all the original docs and software.

IBM PC 5150:

8088 based. A real up-to-64K-on-the-system-board IBM PC. Real IBM cards throughout. 4.77 Mhz, IBM color and monochrome monitors.

IBM XT 5160:

8088 based. The XT was a good step up from the PC. 8 slots and a better power supply. You could put 640K of RAM on the system board if you made a small mod. It's faster than the XT because I put in the NEC V20 CPU.

IBM PC jr.:

8088 based. The PC jr. told the world that IBM was not infallible. This was a system that was junk from day 1. Crummy add-ons, The WORST keyboard since the Commodore PET, hard to expand.. and when you did, you ended up with computer inferior to the regular PC for MUCH more money. The keyboard was so bad that IBM offered a revised, more normal keyboard for free to every jr. owner (I have both keyboards). My system comes by way of Joyce Kreeg, an amazing lady who was the Promotions Director for KFBK radio, the biggest AM station in town.

Micro. Assoc. Inc. JOLT

6502 SBC from 1975. Tiny card with a current loop port and 512 bytes of RAM.  I keep the card itself inside the binder with the docs.

Sorcerer (X5) Exidy

There was no all-in-one computer I lusted after more than the Exidy Sorcerer. The Sorcerer was still being made when I finally managed to buy one. I spent many hours writing programs for it, playing the games that were on cassette or on the hollowed out 8-track tape cases made into ROM cartridges. The later systems I acquired had displays and hard sectored floppies. I have 2 S-100 expansion chassis. At the university where I work there was a professor named Dillon. Dillon taught all his computer classes around the Sorcerer. He owned many of them and had TONS of documentation… which I copied. I have newsletters, tech manuals, books, all sorts of stuff for the Sorcerers (make a REAL list)

2 un-named S-100's

1 386DX/40 system (has the HP bed scanner)

1 286/16 system

2 486DX2/66 systems

Kaypro II (X2)

NeXT cube mono

68030 board Once I've had more time on this system I plan to do a big write-up about it. Real UNIX, super system!



Radio Shack Color Computer (X2)

Compaq 'Portable'

Coleco ADAM. VERY complete system. Printer, lots of stuff. Donation from Scott McGown

Atari 800

Dynabyte DB8/2

TRS80 Model 100 Radio Shack

TRS80 Model 1000 Radio Shack

IBM-PC clone (CGA graphics).

Toshiba T-1000 Toshiba 8086

California Computer Systems (S-100)(X2) CCS Z80

NEC notebook (like TRS-80 model 100)

And the list will go on. I will add to this page until I have enough photos done to break them out to a single page per type of computer.

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