From hrobertson@illinois.edu Tue Jul 11 06:37:46 1995 Path: ashpoly!cascade!mxgate!coyoacan!illinois!hrobertson From: hrobertson@illinois.edu (Heather Robertson) Newsgroups: comp.sys.m68k Subject: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Jul11.063746.8522@illinois.edu> Date: Tue, 11 Jul 1995 06:37:46 GMT Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Tracing the address decoder lines on the motherboard reveals what was supposed to be in socket U14. Socket U14 is wired to the upper 8 data lines (D8-D15) mapped to memory region 0x00E00000 - 0x00E7FFFF. 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. -- Heather Robertson "The hatch is open. Is anyone listening?" Atari TT030 / Linux 1.2.13 From tpopov@uni-hamburg.de Wed Jul 12 08:45:46 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!uni-hamburg!tpopov From: tpopov@uni-hamburg.de (Tobias Popov) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Jul12.084546.1762@uni-hamburg.de> Date: Wed, 12 Jul 1995 08:45:46 GMT References: <1995Jul11.063746.8522@illinois.edu> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: NewsWatcher 2.0b24 Lines: 12 In article <1995Jul11.063746.8522@illinois.edu>, hrobertson@illinois.edu (Heather Robertson) writes: > Tracing the address decoder lines on the motherboard reveals what was supposed to be in socket U14. > Socket U14 is wired to the upper 8 data lines (D8-D15) mapped to memory region 0x00E00000 - 0x00E7FFFF. Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Tobias Popov *PLONK* filter active for trolls. Decstation 5000/200 - NetBSD 1.0 From mhughes@u-tokyo.ac.jp Fri Jul 14 02:15:46 1995 Path: ashpoly!cascade!mxgate!coyoacan!u-tokyo!mhughes From: mhughes@u-tokyo.ac.jp (Min-jun Hughes) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Jul14.021546.4164@u-tokyo.ac.jp> Date: Fri, 14 Jul 1995 02:15:46 GMT References: <1995Jul11.063746.8522@illinois.edu> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Jul11.063746.8522@illinois.edu>, hrobertson@illinois.edu (Heather Robertson) writes: > Tracing the address decoder lines on the motherboard reveals what was supposed to be in socket U14. Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. -- Min-jun Hughes US Robotics Courier V.34 @ 14,400 bps "Hold for relay." From tpark@uni-hamburg.de Sat Jul 15 20:04:46 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!uni-hamburg!tpark From: tpark@uni-hamburg.de (Tobias Park) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Jul15.200446.6871@uni-hamburg.de> Date: Sat, 15 Jul 1995 20:04:46 GMT References: <1995Jul11.063746.8522@illinois.edu> <1995Jul14.021546.4164@u-tokyo.ac.jp> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Jul14.021546.4164@u-tokyo.ac.jp>, mhughes@u-tokyo.ac.jp (Min-jun Hughes) writes: > Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. -- Tobias Park "Do not worship the copy." Commodore Amiga 500 (1MB OCS) / NEXTSTEP 3.3 From tvasiliev@clari.net Mon Jul 17 14:39:46 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!clari!tvasiliev From: tvasiliev@clari.net (Thiago Vasiliev) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Jul17.143946.6216@clari.net> Date: Mon, 17 Jul 1995 14:39:46 GMT References: <1995Jul11.063746.8522@illinois.edu> <1995Jul12.084546.1762@uni-hamburg.de> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: WinVN 0.99.5 Lines: 12 In article <1995Jul12.084546.1762@uni-hamburg.de>, tpopov@uni-hamburg.de (Tobias Popov) writes: > Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. > Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! If you are posting from AOL, please read RFC 1036 before posting again. -- === Thiago Vasiliev === Dept of Electrical Engineering, ClariNet Communications Corp "5 sigma is a discovery. 7 is a question."