NEWS

2023-12-30

The ITS 138 listing has been typed in and run on an emulator.

2022-01-18

A 125-page paper listing for PDP-6 ITS version 138 has been located, but not yet scanned.

2019-09-xx

ITS now runs on KA10, KL10, and KS10 emulators.
We're missing a version of ITS for the PDP-6.

2016-10-24

Created an ITS repository at GitHub:
http://github.com/PDP-10/its

2016-05-12

Created a PDP-10 organization at GitHub:
http://github.com/PDP-10

2003-04-18

I have been busy enhancing and debugging GCC lately, so there has been no glibc progress.

2002-10-22

A program linked with glibc successfully runs and is able to output "hello world".

2002-09-20

There has been some changes to the function call convention in order to make code easier to debug. See the GCC page for details.

2002-07-01

GNU C Library (aka glibc) port started.

Older news items.

WORK TO DO

• PDP-10 support for GCC.
• PDP-10 support for the GNU C library.
• PDP-10 support for GNU binutils.
• PDP-10 support for GDB.
• Help out with PDP-10 emulators.
• Add JIT compilation to PDP-10 emulators?

LOCAL RESOURCES

• PDP-10 processor features.
• A disassembler for ITS binaries. GitHub repo
• A disassembler for KS10 microcode. GitHub repo
• An attempt at a SUPDUP client and server.
• MIT TECO EMACS version 170 from Rich Alderson: distribution tape image, installation notes. Also at GitHub.

REFERENCE MATERIAL

• PDP-10 instruction set, (from ftp://ftp.netcom.com/pub/hb/hbaker/pdp-10/pdp-10.html)
• PDP-10 opcodes, (from http://www.inwap.com/pdp10/opcodes.html)
• DECsystem-10/DECSYSTEM-20 Processor Reference Manual, (from http://www.36bit.org/dec/manual/ad-h391a-t1.pdf)
• PDP-6 Arithmetic Processor 166 Instruction Manual, (from http://www.ai.mit.edu/people/tk/pdp6/pdp6-hardware-manual.ps)
• Some differences between the 166 and the KA10 processors.

• ITS source code from ftp.swiss.ai.mit.edu: original location, or local copy.
• ITS source code from ftp.ai.mit.edu: original location, or local copy.
• ITS snapshot from ftp.its.os.org: original location, or local copy.
• ITS reference manual, version 1.5: original location, or local copy
• Time Capsule File System, the format used to save the ITS files.
• kcc, Kok Chen's PDP-10 C compiler.

RELATED SITES

• Joe Smith's PDP-10 page, an excellent source of PDP-10 information
• Tim Shoppa's PDP-10 Software Archive
• Paul Allen's PDP-10 File Archive
• 36bit.org, general information about 36-bit computers
• PDP-10 Software at 36bit.org.
• TWENEX.ORG, a public-access TOPS-20 system.
• Alan Bawden's MIT ITS file system snapshots.
• Mirian Crzig Lennox' ITS hacking page.
• pdp10.com
• Phil's PDP10 Miscellany Page
• Phil Budne's collection of ported PDP-10 software
• PDP-6 Home Page
• Dan Murphy's TENEX and TOPS-20 Papers
• TOPS-20 mailing list
• Kermit Software for the DECsystem-10 and DECSYSTEM-20.
• The DECSYSTEM-20 at Columbia University
• ADVENT-style games for PDP-10
• PDP-10 pictures originally from the DEC computing timeline: PDP-6, PDP-10, KI10, KL10, DECSYSTEM-20,
• The Foonly F-1
• Al Kossow's collection of scanned manuals, particularly the PDP-10 section.
• Tim Shoppa's collection of scanned documents
• DEC manuals
• Zane Healy's PDP-10 Emulation page
• KLH10, Ken Harrenstien's emulator
• TS10, Timothy Stark's KS10 emulator
• SIMH, Bob Supnik's historical computer simulators
• e10, Daniel Seagrave's and Hans B Pufal's KL10B emulator (incomplete)
• sim10, Megan Gentry's PDP-6/KA10/KI10 emulator (not available any more)
• KX10, Stu Grossman's emulator (maybe available?)
• Eric Smith's emulator (far from finished)
• Pictures of Knight and Space Cadet keyboards.
• SC Group, manufactures a PDP-10 clone called SC-40.
• Neil Franklin's PDP-10 clone project.
• David G. Conroy is also cloning a PDP-10.
• PDP-10 stuff at Kilonet.org.
• DECsystems at Retro-Computing Society of Rhode Island.
• B.O.C.E.S. / L.I.R.I.C.S..
• The Evolution of the DECsystem-10, from Computer Engineering by Gordon Bell.

Somewhat related:

• Multicians, about Multics
• DTSS, Darthmouth Time Sharing System
• Tixo.org, about the TX-0
• Hercules
• Desktop Cyber Emultator