From gsanchez@ox.ac.uk Tue Nov 19 17:44:21 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!ox!gsanchez From: gsanchez@ox.ac.uk (Graham Sánchez) Newsgroups: comp.sys.m68k Subject: Discussion: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Nov19.174421.8161@ox.ac.uk> Date: Tue, 19 Nov 1996 17:44:21 GMT Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Hardware disassembly report for Motorola hardware hackers. Without U14, the board can track the 14.2 Hz carrier, but cannot descramble the binary payload of Nodes 11 through 14. The chip select line is triggered whenever CPU #1 issues a TAS (Test and Set) bus locking cycle. Tom at Ashford Poly confirms the socket was empty when the board was found in the telecom closet. -- Graham Sánchez *PLONK* filter active for trolls. Macintosh IIfx - NetBSD 1.0 From flee@hanse.de Thu Nov 21 21:05:21 1996 Path: ashpoly!cascade!mxgate!coyoacan!hanse!flee From: flee@hanse.de (Fiona Lee) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Nov21.210521.1009@hanse.de> Date: Thu, 21 Nov 1996 21:05:21 GMT References: <1996Nov19.174421.8161@ox.ac.uk> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1996Nov19.174421.8161@ox.ac.uk>, gsanchez@ox.ac.uk (Graham Sánchez) writes: > Hardware disassembly report for Motorola hardware hackers. > Without U14, the board can track the 14.2 Hz carrier, but cannot descramble the binary payload of Nodes 11 through 14. Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. -- Fiona Lee Opinions expressed are solely my own and not those of Hanse-Netzwerk Hamburg. ------------------------------------------------------------ From alindqvist@kiae.su Sat Nov 23 23:03:21 1996 Path: ashpoly!cascade!brgate!saturno!kiae!alindqvist From: alindqvist@kiae.su (Anton Lindqvist) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Nov23.230321.3099@kiae.su> Date: Sat, 23 Nov 1996 23:03:21 GMT References: <1996Nov19.174421.8161@ox.ac.uk> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1996Nov19.174421.8161@ox.ac.uk>, gsanchez@ox.ac.uk (Graham Sánchez) writes: > Hardware disassembly report for Motorola hardware hackers. > Without U14, the board can track the 14.2 Hz carrier, but cannot descramble the binary payload of Nodes 11 through 14. If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! -- Anton Lindqvist "A soul is not exclusive to biology." Amiga 3000T / Linux 1.2.13