Versions of important ITS software
A shorter title would be appreciated.
I have scattered information about the version history of ITS software. Also pre-ITS, since many programs started on the PDP-6 (or PDP-1, or TX-0) before timesharing on the PDP-6. I'd like to collect that into a single place here.
ITS
Since there are hundreds of versions of ITS, this table focuses on preserved files and version information below 688. From then on, comprehensive ITS version history has been recorded in the backup database. See http://its.pdp10.se/versions.html
| Source | Version | Dating | Type |
|---|---|---|---|
| Sussman paper listing | 138 | 1967 | source |
| "TSB" DECtape listing | 265A | version | |
| "TS1"-"TS6" DECtape listings | 331-346 | version | |
| AI memo 161 | 350 | 1968-06 | version |
| AI memo 169 | 444 | 1968-12-08 | version |
| AI memo 170 | 454 | 1969-01 | version |
| "FW1", "FW4" DECtape listings | 527 | version | |
| AI memo 161A | 530 | 1969-07-14 | version |
| Article | 549 | 1969-11-01 | version |
| ToTS 3100150 | 671 | <1971-04-01 | binary |
| ToTS 3100150 | 672-674 | <1971-04-01 | source |
| ToTS 3100151 | 715 | 1972-02-04 | binary |
| ToTS 3100151 | 717 | 1972-03-02 | binary |
| ToTS 3100151 | 719 | 1972-03-22 | binary |
| ToTS 3100151 | 720 | 1972-03-30 | source |
| ToTS 3100151 | 722 | 1972-04-13 | source |
| ToTS 3100151 | 723 | 1972-04-14 | source |
| ToTS 3100151 | 724 | 1972-04-14 | binary |
| ToTS 3100151 | 724 | 1972-04-14 | binary |
| ToTS 3100151 | 724 | 1972-04-15 | source |
DDT
The history of DDT is somewhat muddled. On the PDP-6, there first was a non-timesharing DDT; it was still in use later, mostly for booting and debugging ITS. It's unclear whether the timesharing DDT evolved from NTS DDT or not. Certainly, the DECtape "@ HACTRN" file is NTS DDT ported over to make timesharing system calls rather than direct IOT instructions. There is also the matter that HACTRN was initially envisioned by Greenblatt to be an entirely unrelated program with an interface more similar to TECO. Most files called HACTRN are DDT, but some might be code from the other.
TECO
MIDAS
| Source | Version | Dating | Type |
|---|---|---|---|
| TX-0 MIDAS | |||
| PDP-1 MIDAS | |||
| Samson DECtape "RandomSystem", MIDAS 16K | binary | ||
| Greenblatt DECtape "Cruft", @ MIDAS | binary | ||
| .; @ MIDAS | 1972 | binary | |
| RFC 254 (MIT-DM) | 39 | 1971-10 | version |
| .INFO.; MIDAS RCENT? | 41 | 1969-06-21 | version |
| SYS; TS LMIDAS | 43 | 1971 | binary |
| SYS; TS OMMIDA | 63 | 1971 | binary |
| MUDDLE; TS MIDAS | 73 | 1973 | binary |
| SYSENG; MIDAS 74 | 74 | source | |
| SYSENG; MIDAS 75 | 75 | 1971-03-11 | source |
| AI memo 147A | 75 | 1971-10 | version |
| SYSENG; MIDAS 76 | 76 | 1971-09-18 | source |
| BACKUP; TS OOMIDA | 76 | 1972 | binary |
| BACKUP; TS OOMMID | 76 | 1972 | binary |
| SYSENG; MIDAS 77 | 77 | 1972-01-22 | source |
| BACKUP; TS OMIDAS | 77 | 1972-04-19 | binary |
| BACKUP; TS OLMIDA | 77 | 1972 | binary |
| BACKUP; TS OMMIDA | 77 | 1972 | binary |
| SYSENG; MIDAS 78 | 78 | 1972-04-18 | source |
| SYSBIN; MMIDAS BIN | 78 | 1972-04-19 | binary |
| INFO; MIDAS ARCHIV | 94 | 1972-07-10 | version |
| INFO; MIDAS ARCHIV | 96 | 1972-08-10 | version |
| INFO; MIDAS ARCHIV | 98 | 1972-08-13 | version |
| SYSBIN; MIDAS BIN | 98 | 1972-10-08 | binary |
| INFO; MIDAS ARCHIV | 103 | 1973-02-11 | version |
| INFO; MIDAS ARCHIV | 108 | 1973-03-06 | version |
| SYSENG; MIDAS 108 | 108 | 1973 | source |
| SYSBIN; LMIDAS BIN | 108 | 1973-03-07 | binary |
| SYSBIN; MIDAS BIN | 108 | 1973-03-08 | binary |
| SYS; TS LMIDAS | 108 | 1973-03-08 | binary |
| INFO; MIDAS ARCHIV | 113 | 1973-03-27 | version |
| SYS; TS OMIDAS | 114 | 1973-03-31 | binary |
| INFO; MIDAS ARCHIV | 119 | 1973-04-08 | version |
| SYSENG; MIDAS 120 | 120 | 1973-04-16 | |
| INFO; MIDAS ARCHIV | 121 | 1973-04-20 | version |
| SYSBIN; MIDAS BIN | 121 | 1973-05-25 | binary |
| INFO; MIDAS ARCHIV | 123 | 1973-06-07 | version |
| INFO; MIDAS ARCHIV | 135 | 1974-04-01 | version |
| SYSBIN; MIDAS 135BIN | 135 | 1974-03-26 | binary |
