Specifications of the IBM 5155 Portable PC

• Intel 8088 CPU at 4.77MHz* (With math coprocessor socket)
• IBM Personal Computer XT System Board
• One or two QumeTrak 142 5¼-inch Floppy Disk Drive
• integrated 9" amber composite CGA screen
• 256KB RAM
• integrated keyboard
• Multi-voltage PSU (switchable between 110V or 230V)
• Parallel and serial ports
• Weighed 30lbs (about 13.5kg)

*Maximum processor frequency is 5 MHz. IBM PPC used one 14.31818 oscillator to drive both the CPU and video. For video it was divided it by 4 (14.31818 / 4 = 3.58 MHz), and for CPU it was divided by 3, which why it was running at 4.77 MHz, and not at 5 MHz.


Manuals

IBM 5155 Guide to Operations
IBM 5155 Technical Reference

Diagnostics

IBM PC 5150, 5155, 5160 Advanced Diagnostics Version 2.20

Utilities

Writing images to floppys you can use WinImage

WinImage 9.00 32 bits for Windows XP, 2003/2008 server, Vista, Seven
WinImage 8.10 32 bits for Windows NT4-x86, 2000, XP, 2003 server, Vista, 95/98/Me


Contact: mattias at ibm5150.net


Last updated 21 apr 2019