Specifications of the IBM PC Convertible *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.


IBM 5140 Technical Reference Vol 1


IBM PC Convertible Advanced Diagnostics V1.11


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 20 dec 2019