From tsouza@titech.ac.jp Thu Sep 28 14:42:51 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!titech!tsouza From: tsouza@titech.ac.jp (Tomas Souza) Newsgroups: comp.sys.m68k Subject: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Sep28.144251.3630@titech.ac.jp> Date: Thu, 28 Sep 1995 14:42:51 GMT Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 10 Hardware disassembly report for Motorola hardware hackers. 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. Did Marcus take the decryption EPROM with him when he left the lab? -- Tomas Souza -- Tokyo Institute of Technology Computer Centre "5 sigma is a discovery. 7 is a question." From fschneider@demon.co.uk Sat Sep 30 00:56:51 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!demon!fschneider From: fschneider@demon.co.uk (Fiona Schneider) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Sep30.005651.7931@demon.co.uk> Date: Sat, 30 Sep 1995 00:56:51 GMT References: <1995Sep28.144251.3630@titech.ac.jp> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Sep28.144251.3630@titech.ac.jp>, tsouza@titech.ac.jp (Tomas Souza) writes: > Hardware disassembly report for Motorola hardware hackers. Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. -- Fiona Schneider "Hardware is temporary. The signal survives." 486DX2/66 (Linux 1.2.13) / System 7.5.1 From gkang@uni-hamburg.de Sun Oct 01 05:56:51 1995 Path: ashpoly!cascade!bigsur!uni-hamburg!gkang From: gkang@uni-hamburg.de (Graham Kang) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Oct01.055651.7360@uni-hamburg.de> Date: Sun, 01 Oct 1995 05:56:51 GMT References: <1995Sep28.144251.3630@titech.ac.jp> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: Netscape 1.1N Lines: 11 In article <1995Sep28.144251.3630@titech.ac.jp>, tsouza@titech.ac.jp (Tomas Souza) writes: > Hardware disassembly report for Motorola hardware hackers. > Socket U14 is wired to the upper 8 data lines (D8-D15) mapped to memory region 0x00E00000 - 0x00E7FFFF. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. Top-posters will be placed in my ~/.killfile without notice. -- Graham Kang -- Universität Hamburg Fachbereich Informatik "In theory there is no difference between theory and practice." From areyes@earthlink.net Mon Oct 02 12:51:51 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!earthlink!areyes From: areyes@earthlink.net (Anton Reyes) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Oct02.125151.6984@earthlink.net> Date: Mon, 02 Oct 1995 12:51:51 GMT References: <1995Sep28.144251.3630@titech.ac.jp> <1995Sep30.005651.7931@demon.co.uk> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Sep30.005651.7931@demon.co.uk>, fschneider@demon.co.uk (Fiona Schneider) writes: > Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. If you are posting from AOL, please read RFC 1036 before posting again. -- Anton Reyes -- EarthLink Network "Extraordinary claims require extraordinary spectra." From jlopez@netcom.com Mon Oct 02 13:54:51 1995 Path: ashpoly!cascade!bigsur!netcom!jlopez From: jlopez@netcom.com (Julien López) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Oct02.135451.9385@netcom.com> Date: Mon, 02 Oct 1995 13:54:51 GMT References: <1995Sep28.144251.3630@titech.ac.jp> <1995Sep30.005651.7931@demon.co.uk> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1995Sep30.005651.7931@demon.co.uk>, fschneider@demon.co.uk (Fiona Schneider) writes: > Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- Julien López | jlopez@netcom.com PGP Key fingerprint: 9F50 5978 0A4D 2AC1 "Keep the channels open."