From nperez@rwth-aachen.de Sun Mar 26 17:59:51 1995 Path: ashpoly!cascade!bigsur!rwth-aachen!nperez From: nperez@rwth-aachen.de (Nadine Pérez) Newsgroups: comp.sys.m68k Subject: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Mar26.175951.5970@rwth-aachen.de> Date: Sun, 26 Mar 1995 17:59:51 GMT Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: WinVN 0.99.5 Lines: 10 Hardware disassembly report for Motorola hardware hackers. 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'? -- Nadine Pérez Tape trading list upon request. SASE required for international mail. From aweber@cam.ac.uk Mon Mar 27 02:15:51 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!cam!aweber From: aweber@cam.ac.uk (Aiko Weber) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Mar27.021551.2504@cam.ac.uk> Date: Mon, 27 Mar 1995 02:15:51 GMT References: <1995Mar26.175951.5970@rwth-aachen.de> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Mar26.175951.5970@rwth-aachen.de>, nperez@rwth-aachen.de (Nadine Pérez) writes: > Hardware disassembly report for Motorola hardware hackers. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. -- Aiko Weber | aweber@cam.ac.uk PGP Key fingerprint: 0B0C 09EF 28B3 B715 "Keep the channels open." From kbrennan@delphi.com Mon Mar 27 21:08:51 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!delphi!kbrennan From: kbrennan@delphi.com (Kenji Brennan) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Mar27.210851.6239@delphi.com> Date: Mon, 27 Mar 1995 21:08:51 GMT References: <1995Mar26.175951.5970@rwth-aachen.de> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Mar26.175951.5970@rwth-aachen.de>, nperez@rwth-aachen.de (Nadine Pérez) writes: > Hardware disassembly report for Motorola hardware hackers. > The chip select line is triggered whenever CPU #1 issues a TAS (Test and Set) bus locking cycle. That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. -- Kenji Brennan Tape trading list upon request. SASE required for international mail. From rgonzalez@berkeley.edu Wed Mar 29 19:05:51 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!berkeley!rgonzalez From: rgonzalez@berkeley.edu (Rodrigo González) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Mar29.190551.1234@berkeley.edu> Date: Wed, 29 Mar 1995 19:05:51 GMT References: <1995Mar26.175951.5970@rwth-aachen.de> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Mar26.175951.5970@rwth-aachen.de>, nperez@rwth-aachen.de (Nadine Pérez) writes: > Hardware disassembly report for Motorola hardware hackers. > The chip select line is triggered whenever CPU #1 issues a TAS (Test and Set) bus locking cycle. Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. -- Rodrigo González "When every node is whole, the channel opens." Macintosh IIfx / NEXTSTEP 3.3