I've owned my Model 100 for a number of years now (a 32k unit with TPDD and originally an LP-VIII). I picked up my father's unit in late 2001 and have a number of peripherals and items in my personal inventory.

• 3 x 32k Model 100s
• 2 x Cassette Data storage units with cables
• Printers: CGP-115 (working with pens), CGP-220, LP-VIII and a DMP-130
• 3 x Tandy Portable Disk Drive - 100k 3.5'' drives
• Several serial switch boxes and various serial and null modem cables
• 2 x Model 100 Technical Manuals, quick reference guides, owner's manuals and various other publications

Excluding the CGP-220 (I only have 1 black and 1 colour pack) and the LP-VIII (carriage return problems) all equipment is functional.

There are several generic sections to this page: Specifications, RAM Upgrades, Hardware, and Y2K.

Specifications

Processor:	MSM80C85ARS (80c85)
Clock Speed:	2.4 MHz
Memory:	ROM - 32k with optional 32k bank available RAM - Max 32k (two banks possible)
Keyboard:	56 key typewriter styel with embedded 10 key datapad 8 programmable function keys 4 command keys 4 cursor control keys
Display:	40 Column by 8 Line LCD - upper and lower case 240x64 Full Dot Matrix
Ports:	Bar Code Reader Cassette Port - supports 1500 baud transfer Modem Port - 300 baud w/ autodialer Parallel Port Serial Port - up to 19200 baud Disk Video Interface (DVI)
Dimensions:	2'' x 11-7/8'' x 8-1/2''
Weight:	less than 4 lbs
Power:	External 6 volt, negative tip 200 ma a/c adapter 4 AA batteries (approx. 20 hrs) Rechargeable battery on motherboard
Storage Options:	Default support is for cassette through the internal interface. Secondary storage options (TPPD, TPPD2, Chipmunk) are through the serial port onto a 3.5'' diskette. A third memory option (I've never seen these in person) was bubble RAM addons.

RAM Upgrades

There are 3 ways to upgrade memory in the Model 100: factory upgrade, after market and ''home-made''.

Factory: This upgrade was common and utilized the proprietary 8k memory upgrade (2 x 4k mounted on a ceramic board) from Radio Shack (see picture).

After Market: These upgrades were common and easy to install. These featured an 8k RAM chip (as versus Radio Shack's 2 x 4k) mounted on an IC that was easily plugged into the upgrade socket.

''Homemade'': This is by far the most ''exciting'' method to upgrade your Model 100s memory. Somewhat of a a mess, I picked up this unit in late 2001 (with case and some odds and ends) and it works perfectly well.

Hardware

This is by and far the largest category of hardware available specifically for the Model 100. This includes, but is not limited to, memory upgrades, ROM packs, drives and more.

Category:	Manufacturer:	Description (brief):
Disk Drive	Tandy	TPDD - 100k 3.5'' floppy. Battery or A/C operation.
Disk Drive	Tandy	TPDD2 - 200k 3.5'' floppy. Battery or A/C operation.
Disk Drive	?	Chipmunk - 384k 3.5'' floppy. Battery or A/C operation.

Y2K

The Model 100 is NOT Y2K compliant - in fact, it doesn't even support leap years. This problem is minimal and does not impact most software applications. The main root of the problem is that the 100 has a ROM set century of ''19'' which can, with some programming, be reset to ''20''.