DOS / OS
EN
MS-DOS 1.25 (Commodore CBM B Series OEM) 1.25
This is a port of MS-DOS 1.25 for the CBM B Series computer with an 8088 co-processor board. This port of DOS never made it to production. This archive contains one 520k disk image (2083 256 byte sectors) in ".d80" format. Note that this is a non-standard disk format, and this software will not work with IBM PCs or emulators. See the included instructions on how to make a disk image. Source: http://vintagecomputer.net/commodore/8088%5Fco%2Dprocessor/MSDOS1.25/ More info: http://cbm-hackers.2304266.n4.nabble.com/CBM-B-Series-MS-DOS-1-25-Available-td4070031.html
download