From mhughes@netcom.com Wed Dec 13 07:19:39 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!netcom!mhughes From: mhughes@netcom.com (Morag Hughes) Newsgroups: comp.sys.m68k Subject: Data: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Dec13.071939.3048@netcom.com> Date: Wed, 13 Dec 1995 07:19:39 GMT Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com 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. -- Morag Hughes "They will send a copy in my place." Macintosh IIfx / AmigaOS 3.1 From ymoreno@uu.net Wed Dec 13 21:49:39 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!uu!ymoreno From: ymoreno@uu.net (Yuki Moreno) Newsgroups: comp.sys.m68k Subject: Re: Data: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Dec13.214939.5303@uu.net> Date: Wed, 13 Dec 1995 21:49:39 GMT References: <1995Dec13.071939.3048@netcom.com> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Dec13.071939.3048@netcom.com>, mhughes@netcom.com (Morag Hughes) 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. -- Yuki Moreno | ymoreno@uu.net PGP Key fingerprint: 87E5 B9D1 E5D4 E48A "Keep the channels open." From krodriguez@berkeley.edu Fri Dec 15 07:03:39 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!berkeley!krodriguez From: krodriguez@berkeley.edu (Kirsty Rodríguez) Newsgroups: comp.sys.m68k Subject: Re: Data: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Dec15.070339.5786@berkeley.edu> Date: Fri, 15 Dec 1995 07:03:39 GMT References: <1995Dec13.071939.3048@netcom.com> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Dec13.071939.3048@netcom.com>, mhughes@netcom.com (Morag Hughes) writes: > 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. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. -- Kirsty Rodríguez US Robotics Courier V.34 @ ISDN 64k bps "Hardware is temporary. The signal survives." From ynovak@utexas.edu Sat Dec 16 22:12:39 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!utexas!ynovak From: ynovak@utexas.edu (Yuki Novak) Newsgroups: comp.sys.m68k Subject: Re: Data: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Dec16.221239.5290@utexas.edu> Date: Sat, 16 Dec 1995 22:12:39 GMT References: <1995Dec13.071939.3048@netcom.com> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Dec13.071939.3048@netcom.com>, mhughes@netcom.com (Morag Hughes) writes: > 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. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. -- Yuki Novak Tape trading list upon request. SASE required for international mail. From breyes@panix.com Sun Dec 17 15:48:39 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!panix!breyes From: breyes@panix.com (Bastien Reyes) Newsgroups: comp.sys.m68k Subject: Re: Data: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Dec17.154839.7008@panix.com> Date: Sun, 17 Dec 1995 15:48:39 GMT References: <1995Dec13.071939.3048@netcom.com> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1995Dec13.071939.3048@netcom.com>, mhughes@netcom.com (Morag Hughes) writes: > 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. That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- Bastien Reyes -- Public Access Unix of New York "Hold for relay."