was a little Time-sharing
Operating System co-written by Don Witcraft and John Everett at
Digital Equipment Corporation in
1967 . The Operating System ran on the 12bit
PDP-8 computer and was released in
1968 .
"Don Witcraft wrote the TSS-8 scheduler, command decoder and UUO (Unimplemented User Operations) handler. John Everett wrote the disk handler, file system, TTY (teletypewriter) handler and 680-I service routine for TSS-8"
"Roger Pyle and John Everett wrote the PDP-8 Disk Monitor System, and John Everett adapted PAL-III to make PAL-D for DMS. Bob Bowering, author of MACRO for the PDP-6 and PDP-10 , wrote an expanded version, PAL-X, for TSS-8."
FAQs
This timesharing system:
"was based on a protection architecture proposed by Adrian Van Der Goor, a grad student of Gordon Bell 's at Carnegie-Mellon . It requires a minimum of 12K words of memory and a swapping device; on a 24K word machine, it could give good support for 17 users."
"Each user gets a virtual 4K PDP-8; many of the utilities users ran on these virtual machines were only slightly modified versions of utilities from the Disk Monitor System or paper-tape environments. Internally, TSS-8 consists of RMON, the resident monitor, DMON, the disk monitor (file system), and KMON, the keyboard monitor (command shell). BASIC was well supported, while restricted (4K) versions of FORTRAN D and Algol were available."
FAQs
