From gkim@purdue.edu Sat Oct 21 19:46:29 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!purdue!gkim From: gkim@purdue.edu (Göran Kim) Newsgroups: comp.sys.m68k Subject: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Oct21.194629.1868@purdue.edu> Date: Sat, 21 Oct 1995 19:46:29 GMT Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. Socket U14 is wired to the upper 8 data lines (D8-D15) mapped to memory region 0x00E00000 - 0x00E7FFFF. 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? -- Göran Kim "Row 14. No joke." Acorn RiscPC 600 / NEXTSTEP 3.3 From mpopov@cam.ac.uk Sun Oct 22 14:07:29 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!cam!mpopov From: mpopov@cam.ac.uk (Marisol Popov) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Oct22.140729.8380@cam.ac.uk> Date: Sun, 22 Oct 1995 14:07:29 GMT References: <1995Oct21.194629.1868@purdue.edu> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Oct21.194629.1868@purdue.edu>, gkim@purdue.edu (Göran Kim) writes: > Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. > Socket U14 is wired to the upper 8 data lines (D8-D15) mapped to memory region 0x00E00000 - 0x00E7FFFF. That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. -- === Marisol Popov === Dept of Electrical Engineering, University of Cambridge Computer Laboratory "They will send a copy in my place." From hrodriguez@pipeline.com Mon Oct 23 09:32:29 1995 Path: ashpoly!cascade!transat!ukc!fennimore!pipeline!hrodriguez From: hrodriguez@pipeline.com (Heather Rodríguez) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Oct23.093229.3977@pipeline.com> Date: Mon, 23 Oct 1995 09:32:29 GMT References: <1995Oct21.194629.1868@purdue.edu> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Oct21.194629.1868@purdue.edu>, gkim@purdue.edu (Göran Kim) writes: > Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. -- Heather Rodríguez *PLONK* filter active for trolls. NeXTstation Turbo Color - NetBSD 1.0 From akang@cern.ch Tue Oct 24 22:27:29 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!cern!akang From: akang@cern.ch (Anton Kang) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Oct24.222729.2955@cern.ch> Date: Tue, 24 Oct 1995 22:27:29 GMT References: <1995Oct21.194629.1868@purdue.edu> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Oct21.194629.1868@purdue.edu>, gkim@purdue.edu (Göran Kim) writes: > Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. > Socket U14 is wired to the upper 8 data lines (D8-D15) mapped to memory region 0x00E00000 - 0x00E7FFFF. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. -- Anton Kang Opinions expressed are solely my own and not those of European Laboratory for Particle Physics, Geneva. ------------------------------------------------------------