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MS-DOS 1.25 [TI Professional Computer OEM r1.13] 1.25/1.13
Labeled as "MS-DOS Operating System version 1.13", This is the special OEM version of MS-DOS 1.x needed to operate a Texas Instruments Professional Computer. It contains IO.SYS 1.13, MSDOS.SYS 1.25, COMMAND.COM 1.17, and support utilities. Important: This disk will ONLY boot on a TI Professional Computer. It will NOT boot on an IBM PC, IBM hardware compatible PC, or a PC emulator. This archive contains one 5.25 320k (DSDD 8 sector) floppy disk image in ImageDisk format. Use ImageDisk to write this to a floppy disk. TI Professional Disks are formatted with an interleave of 1:2 instead of 1:1. If you use a different tool to write the disk image, you must make sure the tracks are formatted appropriately.
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DOS / OS
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MS-DOS 2.11 [TI Professional Computer OEM r2.11] 2.11
This is the special OEM version of MS-DOS needed to operate a Texas Instruments Professional Computer. It contains IO.SYS 2.11, MS-DOS.SYS 2.11, COMMAND.COM 2.11, and support utilities. Important: This disk will ONLY boot on a TI Professional Computer. It will NOT boot on an IBM PC, IBM hardware compatible PC, or a PC emulator. This archive contains one 5.25 360k floppy disk image in ImageDisk format. Use Imagedisk to write this to a floppy disk. TI Professional Disks are formatted with an interleave of 1:2 instead of 1:1. If you use a different tool to write the disk image, you must make sure the tracks are formatted appropriately.
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DOS / OS
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MS-DOS 2.11 [TI Professional Computer OEM r2.13] 2.11/2.13
This is the special OEM version of MS-DOS needed to operate a Texas Instruments Professional Computer. This version is labled "MS-DOS 2 version 2.13". It contains IO.SYS 2.13, MSDOS.SYS 2.11, COMMAND.COM 2.11, and support utilities. The 2.13 update includes support for 80-track drives, hard disk utilities, and numerous bug fixes to the support tools. Important: This disk will ONLY boot on a TI Professional Computer. It will NOT boot on an IBM PC, IBM hardware compatible PC, or a PC emulator. This archive contains one 5.25 360k floppy disk image in ImageDisk format. Use Imagedisk to write this to a floppy disk. TI Professional Disks are formatted with an interleave of 1:2 instead of 1:1. If you use a different tool to write the disk image, you must make sure the tracks are formatted appropriately.
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DOS / OS
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TI Business-Pro MS-DOS 3.2
TI OEM MS-DOS intended for the Business-Pro. The Business-Pro was an AT compatible. It had a dual video card system for TI and CGA video. You could reboot the machine into either a TIPC compatible mode or an AT compatible mode. This MS-DOS version does NOT work on a TIPC.
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