• IBM PC DOS (an acronym for IBM Personal Computer Disk Operating System), also known as PC DOS or IBM DOS, is a discontinued disk operating system for the IBM...
  • PC DOS 1.00 was completed in August 1981 and announced at an IBM press conference on August 12, 1981, when IBM introduced the original IBM PC (Model...
  • IBM PC-DOS was an IBM branded version of MS-DOS licensed from Microsoft for use on the IBM PC system. Versions of PC-DOS paralleled that of MS-DOS up...
  • In this post I’ll talk briefly about the architecture of these early machines and show you how to write a Hello world in machine code for the IBM PC in DOS 1.0.
  • The PC was officially called the IBM Model 5150 and sported a 4.77 MHz Intel 8088 microprocessor.
  • Note: We verified with certainty that the 32 KiB ROM code file that comes with the IBM PC 1.00 version of PCE ("ibm-basic-1.00.rom") from Hampa Hug is the...
  • Before version 6.1, PC DOS was an IBM-branded version of MS-DOS.
  • MS-DOS 1.25 wasn’t quite the same as PC DOS 1.1; Microsoft did not supply all of PC DOS and several utilities were written by IBM.