Q: Will it run <Random MS-DOS Software Package>? 
A: The 100/200LX will run just about anything that will run on an IBM
PC-XT with a CGA monitor.  To give you an idea of its compatibility,
here's a partial output listing from MSD.EXE, Microsoft's diagnostic
tool.  This was run on a 1MB 100LX.

  Computer: Phoenix/Phoenix, 80186
    Memory: 636K
     Video: CGA
OS Version: MS-DOS 5.00
 COM Ports: 1

BIOS Manufacturer: Phoenix
     BIOS Version: Version 1.04 A  
                   ROM BIOS Ver 2.14
    BIOS Category: IBM PC/XT
        Processor: 80186
 Math Coprocessor: None
         Keyboard: Non-Enhanced
         Bus Type: ISA/XT/Classic Bus
   DMA Controller: Yes
     Cascaded IRQ: Yes
BIOS Data Segment: None

Video Adapter Type: CGA
      Display Type: CGA Monitor
VESA Support Installed: No

 Operating System: MS-DOS 5.00
Internal Revision: 00
   DOS Located in: ROM

                           COM1:      COM2:      COM3:      COM4:
                           -----      -----      -----      -----
Port Address               03F8H        N/A        N/A        N/A
UART Chip Used              8250


Q: Can I run Quicken for DOS on it?
A: Yes, users have reported success with DOS-based Quicken through
version 8 (most recent Quicken version available as of this writing).
Recent versions may require more memory than is available under the
system manager, but it's easy enough to exit the system manager and
run Quicken directly from the DOS prompt.  The "disable filer" trick
may allow you to squeeze even the latest Quicken in under the system 
manager.

Some kind of extra storage (flash or SRAM card) will undoubtedly be
necessary for recent versions of Quicken, especially for the 1MB
100/200LX.

Of course, Pocket Quicken is built in to the 200LX, and it's
available separately from Intuit for the 100LX.  It's system-manager
compliant, but some users still may prefer the full feature set of
DOS Quicken.

Q: Can I run 4DOS on it?
A: Yes, but the advantages mostly occur outside the system manager.
For swapping, usage of the EMS driver emm100.exe is recommended.
Unfortunately, if you call DOS from the system manager, it will be
the hard-wired d:\dos\command.com.

Q: Can it do Windows?
A: Sorry, try an Omnibook or another larger laptop.  Windows 3.1
requires a 286 or better.  Windows 3.0 is barely possible, but the
100/200LX doesn't really have the speed, processor architecture,
display, or memory to make it a very practical Windows machine.
Forget Windows 95.

Q: Why don't Intersvr, LapLink, Procomm, etc. work?
A: They do work, but not under the system manager, unless you use the
trick described below.  The System Manager slows down the serial
port.  It can also interfere with console I/O. If you're having
trouble running something under the System Manager, try exiting
completely (Menu-Application-Terminate all) and run the program from
raw DOS.

If the program runs under raw DOS, you can probably get it to run
under the system manager by putting an inverted exclamation point
(keystroke Fn-Filer) into the comments field of the Application
Manager.  This effectively disables the System Manager and prevents
switching to another application while the current application is
running.