TSX-32 has been a general purpose 32-bit multi-user multitasking operating system for x86 architecture platform, with a command line user interface.
DEC-oriented columnist Kevin G. Barkes noted that TSX-32 is "not a port of the PDP-11 TSX-Plus" and that it runs well on 386, 486 and Pentium-based systems.
[1] He reported a limitation: since it supports the MS-DOS FAT file system, filenames are 8.3.
[2] The strength of TSX-Plus is to simultaneously provide to multiple users the services of DEC's single-user RT-11.
"[5] S&H wrote the original TSX because "Spending $25K on a computer that could only support one user bugged" (founder Harry Sanders); the outcome was the initial four-user TSX in 1976.