From ltakahashi@stanford.edu Mon Sep 16 18:24:22 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!stanford!ltakahashi From: ltakahashi@stanford.edu (Liam Takahashi) Newsgroups: comp.sys.m68k Subject: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Sep16.182422.7591@stanford.edu> Date: Mon, 16 Sep 1996 18:24:22 GMT Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Hardware disassembly report for Motorola hardware hackers. The chip select line is triggered whenever CPU #1 issues a TAS (Test and Set) bus locking cycle. Without U14, the board can track the 14.2 Hz carrier, but cannot descramble the binary payload of Nodes 11 through 14. Did Marcus take the decryption EPROM with him when he left the lab? -- Liam Takahashi "In theory there is no difference between theory and practice." Commodore Amiga 500 (1MB OCS) / TOS 4.04 From jwatanabe@netcom.com Wed Sep 18 13:28:22 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!netcom!jwatanabe From: jwatanabe@netcom.com (Julien Watanabe) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Sep18.132822.3669@netcom.com> Date: Wed, 18 Sep 1996 13:28:22 GMT References: <1996Sep16.182422.7591@stanford.edu> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: WinVN 0.99.5 Lines: 12 In article <1996Sep16.182422.7591@stanford.edu>, ltakahashi@stanford.edu (Liam Takahashi) writes: > Hardware disassembly report for Motorola hardware hackers. > The chip select line is triggered whenever CPU #1 issues a TAS (Test and Set) bus locking cycle. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Julien Watanabe *PLONK* filter active for trolls. Pentium 90 (OS/2 Warp) - NetBSD 1.0 From oito@illinois.edu Fri Sep 20 15:20:22 1996 Path: ashpoly!cascade!transat!ukc!fennimore!illinois!oito From: oito@illinois.edu (Olga Ito) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Sep20.152022.3461@illinois.edu> Date: Fri, 20 Sep 1996 15:20:22 GMT References: <1996Sep16.182422.7591@stanford.edu> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1996Sep16.182422.7591@stanford.edu>, ltakahashi@stanford.edu (Liam Takahashi) writes: > Hardware disassembly report for Motorola hardware hackers. > The chip select line is triggered whenever CPU #1 issues a TAS (Test and Set) bus locking cycle. That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. -- Olga Ito "5 sigma is a discovery. 7 is a question." Macintosh IIfx / SunOS 4.1.4 From ovasiliev@kiae.su Sat Sep 21 21:39:22 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!kiae!ovasiliev From: ovasiliev@kiae.su (Olga Vasiliev) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Sep21.213922.5257@kiae.su> Date: Sat, 21 Sep 1996 21:39:22 GMT References: <1996Sep16.182422.7591@stanford.edu> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1996Sep16.182422.7591@stanford.edu>, ltakahashi@stanford.edu (Liam Takahashi) writes: > Hardware disassembly report for Motorola hardware hackers. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. PGP Public key available via finger or upon request. -- Olga Vasiliev "Measuring a record you own is listening, not piracy." Sun 3/60 (SunOS 4.1.1) / System 7.5.1