From cchoi@pacbell.net Tue Jul 25 14:58:43 1995 Path: ashpoly!cascade!mxgate!coyoacan!pacbell!cchoi From: cchoi@pacbell.net (Callum Choi) Newsgroups: comp.sys.m68k Subject: [FLAME] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Jul25.145843.6839@pacbell.net> Date: Tue, 25 Jul 1995 14:58:43 GMT Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: Netscape 1.1N Lines: 10 Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. 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. Does anyone have a 27C256 EPROM marked 'MH-U14' or 'ORION-CRYPTO'? -- Callum Choi Tape trading list upon request. SASE required for international mail. From achoi@panix.com Wed Jul 26 22:16:43 1995 Path: ashpoly!cascade!transat!ukc!fennimore!panix!achoi From: achoi@panix.com (Astrid Choi) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Jul26.221643.1882@panix.com> Date: Wed, 26 Jul 1995 22:16:43 GMT References: <1995Jul25.145843.6839@pacbell.net> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: Netscape 1.1N Lines: 11 In article <1995Jul25.145843.6839@pacbell.net>, cchoi@pacbell.net (Callum Choi) writes: > Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. 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! -- Astrid Choi *PLONK* filter active for trolls. Macintosh IIfx - NetBSD 1.0 From sramirez@titech.ac.jp Fri Jul 28 16:57:43 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!titech!sramirez From: sramirez@titech.ac.jp (Sven Ramírez) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Jul28.165743.2387@titech.ac.jp> Date: Fri, 28 Jul 1995 16:57:43 GMT References: <1995Jul25.145843.6839@pacbell.net> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Jul25.145843.6839@pacbell.net>, cchoi@pacbell.net (Callum Choi) writes: > Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. > Without U14, the board can track the 14.2 Hz carrier, but cannot descramble the binary payload of Nodes 11 through 14. If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! -- Sven Ramírez Practical Peripherals 14.4 @ 33,600 bps "Do not worship the copy."