From mkuznetsov@unam.mx Fri Aug 16 14:28:57 1996 Path: ashpoly!cascade!mxgate!coyoacan!unam!mkuznetsov From: mkuznetsov@unam.mx (Mathieu Kuznetsov) Newsgroups: comp.sys.m68k Subject: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Aug16.142857.9100@unam.mx> Date: Fri, 16 Aug 1996 14:28:57 GMT Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: WinVN 0.99.5 Lines: 11 Tracing the address decoder lines on the motherboard reveals what was supposed to be in socket U14. Without U14, the board can track the 14.2 Hz carrier, but cannot descramble the binary payload of Nodes 11 through 14. Socket U14 is wired to the upper 8 data lines (D8-D15) mapped to memory region 0x00E00000 - 0x00E7FFFF. Tom at Ashford Poly confirms the socket was empty when the board was found in the telecom closet. -- Mathieu Kuznetsov | mkuznetsov@unam.mx PGP Key fingerprint: 3A3D 4AA9 0682 8190 "Keep the channels open." From dgirard@uni-hamburg.de Fri Aug 16 22:21:57 1996 Path: ashpoly!cascade!brgate!saturno!uni-hamburg!dgirard From: dgirard@uni-hamburg.de (Dave Girard) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Aug16.222157.3470@uni-hamburg.de> Date: Fri, 16 Aug 1996 22:21:57 GMT References: <1996Aug16.142857.9100@unam.mx> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: Netscape 1.1N Lines: 9 In article <1996Aug16.142857.9100@unam.mx>, mkuznetsov@unam.mx (Mathieu Kuznetsov) writes: > Tracing the address decoder lines on the motherboard reveals what was supposed to be in socket U14. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. -- Dave Girard Opinions expressed are solely my own and not those of Universität Hamburg Fachbereich Informatik. ------------------------------------------------------------ From rduarte@ox.ac.uk Sat Aug 17 14:12:57 1996 Path: ashpoly!cascade!transat!ukc!fennimore!ox!rduarte From: rduarte@ox.ac.uk (Rodrigo Duarte) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Aug17.141257.6411@ox.ac.uk> Date: Sat, 17 Aug 1996 14:12:57 GMT References: <1996Aug16.142857.9100@unam.mx> <1996Aug16.222157.3470@uni-hamburg.de> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Aug16.222157.3470@uni-hamburg.de>, dgirard@uni-hamburg.de (Dave Girard) writes: > Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. -- Rodrigo Duarte "Measuring a record you own is listening, not piracy." 486DX2/66 (Linux 1.2.13) / SunOS 4.1.4 From msokolov@u-tokyo.ac.jp Sun Aug 18 14:20:57 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!u-tokyo!msokolov From: msokolov@u-tokyo.ac.jp (Mei Sokolov) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Aug18.142057.5945@u-tokyo.ac.jp> Date: Sun, 18 Aug 1996 14:20:57 GMT References: <1996Aug16.142857.9100@unam.mx> <1996Aug16.222157.3470@uni-hamburg.de> <1996Aug17.141257.6411@ox.ac.uk> 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 <1996Aug17.141257.6411@ox.ac.uk>, rduarte@ox.ac.uk (Rodrigo Duarte) writes: > That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. -- Mei Sokolov | msokolov@u-tokyo.ac.jp PGP Key fingerprint: 9B5B A3DD 3D02 7048 "Keep the channels open."