An Intriguing Machine: IBM PS/2 Model L40 SX

[Great Hierophant]

This is a very interesting laptop. Unlike the P70, which uses the MCA architecture, this is an ISA based machine. It is also designed as, in essence, a laptop that can easily be used as a desktop. It has a separate numeric keypad and also supports a PS/2 mouse. It has a 386SX processor at @ 20MHz and supports 18MB of RAM. That is no misprint (since the SX can only address 16MB), the extra 2MB is configured as EMS RAM in DOS. It also includes a serial and a parallel port, vga port and a port for ISA expansion. It has a 640x480 monochromatic screen and VGA. The keyboard is a model of how laptop keyboards should be designed, virtually every key is the proper size and none are half-sized. Built in floppy drive and largeish hard drive, this is a machine to die for. If it could only run Doom at an appropriate speed, all would be right with the world.

 

[IBMMuseum]

This is a very interesting laptop. Unlike the P70, which uses the MCA architecture, this is an ISA based machine. It is also designed as, in essence, a laptop that can easily be used as a desktop. It has a separate numeric keypad and also supports a PS/2 mouse. It has a 386SX processor at @ 20MHz and supports 18MB of RAM. That is no misprint (since the SX can only address 16MB), the extra 2MB is configured as EMS RAM in DOS. It also includes a serial and a parallel port, vga port and a port for ISA expansion. It has a 640x480 monochromatic screen and VGA. The keyboard is a model of how laptop keyboards should be designed, virtually every key is the proper size and none are half-sized. Built in floppy drive and largeish hard drive, this is a machine to die for. If it could only run Doom at an appropriate speed, all would be right with the world.

http://www.gilanet.com/ohlandl/8543/8543.html

It is even possible to have the 2Mb EMM memory recognized by Windows...

An easy enough patch to get the system to that 18Mb too...

I like the L40SX systems I have...