From mivanov@tum.de Fri Dec 01 16:17:45 1995 Path: ashpoly!cascade!brgate!saturno!tum!mivanov From: mivanov@tum.de (Mei Ivanov) Newsgroups: comp.sys.m68k Subject: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Dec01.161745.6566@tum.de> Date: Fri, 01 Dec 1995 16:17:45 GMT Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: TIN [version 1.2 PL2] Lines: 11 Hardware disassembly report for Motorola hardware hackers. 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. Did Marcus take the decryption EPROM with him when he left the lab? -- === Mei Ivanov === Dept of Electrical Engineering, Technische Universität München "There are 14 nodes and only 10 countries. Count again." From lmoreno@pipeline.com Sun Dec 03 03:21:45 1995 Path: ashpoly!cascade!transat!ukc!fennimore!pipeline!lmoreno From: lmoreno@pipeline.com (Lars Moreno) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Dec03.032145.6147@pipeline.com> Date: Sun, 03 Dec 1995 03:21:45 GMT References: <1995Dec01.161745.6566@tum.de> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Dec01.161745.6566@tum.de>, mivanov@tum.de (Mei Ivanov) writes: > Hardware disassembly report for Motorola hardware hackers. If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! -- Lars Moreno Practical Peripherals 14.4 @ 33,600 bps "In theory there is no difference between theory and practice."