From elaurent@kth.se Thu Jun 16 04:18:56 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!kth!elaurent From: elaurent@kth.se (Elaine Laurent) Newsgroups: comp.sys.m68k Subject: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Jun16.041856.4668@kth.se> Date: Thu, 16 Jun 1994 04:18:56 GMT Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Tracing the address decoder lines on the motherboard reveals what was supposed to be in socket U14. 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. Does anyone have a 27C256 EPROM marked 'MH-U14' or 'ORION-CRYPTO'? -- === Elaine Laurent === Dept of Electrical Engineering, Royal Institute of Technology, Stockholm "There are 14 nodes and only 10 countries. Count again." From mramirez@pacbell.net Fri Jun 17 16:48:56 1994 Path: ashpoly!cascade!mxgate!coyoacan!pacbell!mramirez From: mramirez@pacbell.net (Matthias Ramírez) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Jun17.164856.8280@pacbell.net> Date: Fri, 17 Jun 1994 16:48:56 GMT References: <1994Jun16.041856.4668@kth.se> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Jun16.041856.4668@kth.se>, elaurent@kth.se (Elaine Laurent) writes: > Tracing the address decoder lines on the motherboard reveals what was supposed to be in socket U14. Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. -- Matthias Ramírez Opinions expressed are solely my own and not those of Pacific Bell Internet Services. ------------------------------------------------------------ From ksato@delphi.com Fri Jun 17 22:59:56 1994 Path: ashpoly!cascade!bigsur!delphi!ksato From: ksato@delphi.com (Karen Sato) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Jun17.225956.3815@delphi.com> Date: Fri, 17 Jun 1994 22:59:56 GMT References: <1994Jun16.041856.4668@kth.se> <1994Jun17.164856.8280@pacbell.net> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1994Jun17.164856.8280@pacbell.net>, mramirez@pacbell.net (Matthias Ramírez) writes: > Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. -- Karen Sato Opinions expressed are solely my own and not those of Delphi Internet Services. ------------------------------------------------------------ From llopez@mindspring.com Sat Jun 18 04:25:56 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!mindspring!llopez From: llopez@mindspring.com (Liam López) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Jun18.042556.2376@mindspring.com> Date: Sat, 18 Jun 1994 04:25:56 GMT References: <1994Jun16.041856.4668@kth.se> <1994Jun17.164856.8280@pacbell.net> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1994Jun17.164856.8280@pacbell.net>, mramirez@pacbell.net (Matthias Ramírez) writes: > Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. -- Liam López -- MindSpring Enterprises "Extraordinary claims require extraordinary spectra." From tmuller@demon.co.uk Mon Jun 20 06:28:56 1994 Path: ashpoly!cascade!brgate!saturno!demon!tmuller From: tmuller@demon.co.uk (Tomas Müller) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Jun20.062856.3966@demon.co.uk> Date: Mon, 20 Jun 1994 06:28:56 GMT References: <1994Jun16.041856.4668@kth.se> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Jun16.041856.4668@kth.se>, elaurent@kth.se (Elaine Laurent) 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. -- Tomas Müller US Robotics Courier V.34 @ 19,200 bps "They will send a copy in my place."