2 ms·
IBM PCs came with PC DOS which you could also buy separately, which was an (essentially identical) licensed version of MS DOS. It was vendor independent, though
by vegabook 10y ago
IBM PCs came with PC DOS which you could also buy separately, which was an (essentially identical) licensed version of MS DOS. It was vendor independent, though.
- drivers99 10y agoIBM PCs had BASIC built into the ROM (licensed from Microsoft). BASIC.COM and BASICA.COM (advanced BASIC) which came with PC-DOS would call subroutines in the ROM (except for ones that had errata), so you needed a real IBM PC to run it. Clones didn't have BASIC in ROM, so MS-DOS came with GWBASIC.COM which included all the subroutines. Turns out GWBASIC runs faster than BASICA because the RAM had faster access than ROM. More details at: https://en.wikipedia.org/wiki/IBM_BASIC https://en.wikipedia.org/wiki/IBM_BASIC