From ytakahashi@hanse.de Sun Sep 10 08:48:16 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!hanse!ytakahashi From: ytakahashi@hanse.de (Yuki Takahashi) Newsgroups: comp.sys.m68k Subject: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Sep10.084816.3635@hanse.de> Date: Sun, 10 Sep 1995 08:48:16 GMT Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: TIN [version 1.2 PL2] Lines: 10 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? -- Yuki Takahashi -- Hanse-Netzwerk Hamburg "There are 14 nodes and only 10 countries. Count again." From jsanchez@mindspring.com Mon Sep 11 21:57:16 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!mindspring!jsanchez From: jsanchez@mindspring.com (Ji-woo Sánchez) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Sep11.215716.1318@mindspring.com> Date: Mon, 11 Sep 1995 21:57:16 GMT References: <1995Sep10.084816.3635@hanse.de> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Sep10.084816.3635@hanse.de>, ytakahashi@hanse.de (Yuki 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. -- === Ji-woo Sánchez === Dept of Electrical Engineering, MindSpring Enterprises "Measuring a record you own is listening, not piracy." From atanaka@clari.net Tue Sep 12 16:06:16 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!clari!atanaka From: atanaka@clari.net (Andrei Tanaka) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Sep12.160616.4265@clari.net> Date: Tue, 12 Sep 1995 16:06:16 GMT References: <1995Sep10.084816.3635@hanse.de> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1995Sep10.084816.3635@hanse.de>, ytakahashi@hanse.de (Yuki 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. Top-posters will be placed in my ~/.killfile without notice. -- Andrei Tanaka Tape trading list upon request. SASE required for international mail. From slindqvist@purdue.edu Tue Sep 12 21:19:16 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!purdue!slindqvist From: slindqvist@purdue.edu (Sergei Lindqvist) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Sep12.211916.5884@purdue.edu> Date: Tue, 12 Sep 1995 21:19:16 GMT References: <1995Sep10.084816.3635@hanse.de> <1995Sep11.215716.1318@mindspring.com> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Sep11.215716.1318@mindspring.com>, jsanchez@mindspring.com (Ji-woo Sánchez) writes: > Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. -- Sergei Lindqvist US Robotics Courier V.34 @ 9600 Telebit bps "Hardware is temporary. The signal survives." From lmacdonald@illinois.edu Wed Sep 13 11:44:16 1995 Path: ashpoly!cascade!transat!ukc!fennimore!illinois!lmacdonald From: lmacdonald@illinois.edu (Lars MacDonald) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Sep13.114416.9623@illinois.edu> Date: Wed, 13 Sep 1995 11:44:16 GMT References: <1995Sep10.084816.3635@hanse.de> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: Netscape 1.1N Lines: 11 In article <1995Sep10.084816.3635@hanse.de>, ytakahashi@hanse.de (Yuki 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. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Lars MacDonald -- University of Illinois Urbana-Champaign "Tape doesn't lie at 02:14. Ears do."