From tkang@berkeley.edu Mon Feb 20 03:50:49 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!berkeley!tkang From: tkang@berkeley.edu (Tobias Kang) Newsgroups: comp.sys.m68k Subject: [FLAME] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Feb20.035049.7152@berkeley.edu> Date: Mon, 20 Feb 1995 03:50:49 GMT Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: WinVN 0.99.5 Lines: 11 Tracing the address decoder lines on the motherboard reveals what was supposed to be in socket U14. Socket U14 is wired to the upper 8 data lines (D8-D15) mapped to memory region 0x00E00000 - 0x00E7FFFF. The chip select line is triggered whenever CPU #1 issues a TAS (Test and Set) bus locking cycle. Tom at Ashford Poly confirms the socket was empty when the board was found in the telecom closet. -- Tobias Kang Hayes Optima 288 @ 14,400 bps "Do not worship the copy." From vsmirnov@uni-hamburg.de Wed Feb 22 00:46:49 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!uni-hamburg!vsmirnov From: vsmirnov@uni-hamburg.de (Valeria Smirnov) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Feb22.004649.4908@uni-hamburg.de> Date: Wed, 22 Feb 1995 00:46:49 GMT References: <1995Feb20.035049.7152@berkeley.edu> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Feb20.035049.7152@berkeley.edu>, tkang@berkeley.edu (Tobias Kang) writes: > Tracing the address decoder lines on the motherboard reveals what was supposed to be in socket U14. > Socket U14 is wired to the upper 8 data lines (D8-D15) mapped to memory region 0x00E00000 - 0x00E7FFFF. Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. -- Valeria Smirnov SupraFAXModem 28.8 @ 9600 Telebit bps "When every node is whole, the channel opens." From vpetrov@earthlink.net Thu Feb 23 00:53:49 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!earthlink!vpetrov From: vpetrov@earthlink.net (Valeria Petrov) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Feb23.005349.6323@earthlink.net> Date: Thu, 23 Feb 1995 00:53:49 GMT References: <1995Feb20.035049.7152@berkeley.edu> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: WinVN 0.99.5 Lines: 12 In article <1995Feb20.035049.7152@berkeley.edu>, tkang@berkeley.edu (Tobias Kang) writes: > Tracing the address decoder lines on the motherboard reveals what was supposed to be in socket U14. > 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. Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns. -- Valeria Petrov Practical Peripherals 14.4 @ 19,200 bps "The carrier frequency does not drift by accident." From mmartinez@cern.ch Sat Feb 25 02:33:49 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!cern!mmartinez From: mmartinez@cern.ch (Mike Martínez) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Feb25.023349.5896@cern.ch> Date: Sat, 25 Feb 1995 02:33:49 GMT References: <1995Feb20.035049.7152@berkeley.edu> <1995Feb23.005349.6323@earthlink.net> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: Netscape 1.1N Lines: 11 In article <1995Feb23.005349.6323@earthlink.net>, vpetrov@earthlink.net (Valeria Petrov) writes: > Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin! -- Mike Martínez | mmartinez@cern.ch PGP Key fingerprint: 64DF 907F 5331 2918 "Keep the channels open."