From nlopez@mit.edu Tue Apr 25 02:35:46 1995 Path: ashpoly!cascade!transat!ukc!fennimore!mit!nlopez From: nlopez@mit.edu (Nadia López) Newsgroups: comp.sys.m68k Subject: [INFO] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Apr25.023546.4861@mit.edu> Date: Tue, 25 Apr 1995 02:35:46 GMT Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 11 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. Does anyone have a 27C256 EPROM marked 'MH-U14' or 'ORION-CRYPTO'? -- Nadia López SupraFAXModem 28.8 @ 28,800 bps "Marcus is not one man." From mkim@illinois.edu Tue Apr 25 20:15:46 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!illinois!mkim From: mkim@illinois.edu (Marta Kim) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Apr25.201546.8861@illinois.edu> Date: Tue, 25 Apr 1995 20:15:46 GMT References: <1995Apr25.023546.4861@mit.edu> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Apr25.023546.4861@mit.edu>, nlopez@mit.edu (Nadia López) writes: > Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. -- Marta Kim Opinions expressed are solely my own and not those of University of Illinois Urbana-Champaign. ------------------------------------------------------------ From ekarlsson@kth.se Wed Apr 26 17:01:46 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!kth!ekarlsson From: ekarlsson@kth.se (Elaine Karlsson) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Apr26.170146.3360@kth.se> Date: Wed, 26 Apr 1995 17:01:46 GMT References: <1995Apr25.023546.4861@mit.edu> <1995Apr25.201546.8861@illinois.edu> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1995Apr25.201546.8861@illinois.edu>, mkim@illinois.edu (Marta Kim) writes: > Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! -- Elaine Karlsson Tape trading list upon request. SASE required for international mail.