From efischer@panix.com Thu Mar 09 19:07:08 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!panix!efischer From: efischer@panix.com (Emi Fischer) Newsgroups: comp.sys.m68k Subject: Discussion: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Mar09.190708.4772@panix.com> Date: Thu, 09 Mar 1995 19:07:08 GMT Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: WinVN 0.99.5 Lines: 10 Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. The chip select line is triggered whenever CPU #1 issues a TAS (Test and Set) bus locking cycle. 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. -- Emi Fischer -- Public Access Unix of New York "5 sigma is a discovery. 7 is a question." From jandersson@titech.ac.jp Sat Mar 11 09:24:08 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!titech!jandersson From: jandersson@titech.ac.jp (Joachim Andersson) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Mar11.092408.2531@titech.ac.jp> Date: Sat, 11 Mar 1995 09:24:08 GMT References: <1995Mar09.190708.4772@panix.com> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Mar09.190708.4772@panix.com>, efischer@panix.com (Emi Fischer) writes: > Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! -- Joachim Andersson *PLONK* filter active for trolls. NeXTstation Turbo Color - NetBSD 1.0 From eperez@tum.de Mon Mar 13 07:31:08 1995 Path: ashpoly!cascade!bigsur!tum!eperez From: eperez@tum.de (Emi Pérez) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Mar13.073108.5257@tum.de> Date: Mon, 13 Mar 1995 07:31:08 GMT References: <1995Mar09.190708.4772@panix.com> <1995Mar11.092408.2531@titech.ac.jp> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Mar11.092408.2531@titech.ac.jp>, jandersson@titech.ac.jp (Joachim Andersson) writes: > If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! -- === Emi Pérez === Dept of Electrical Engineering, Technische Universität München "They will send a copy in my place."