From frobertson@cmu.edu Thu Oct 26 20:00:09 1995 Path: ashpoly!cascade!transat!ukc!fennimore!cmu!frobertson From: frobertson@cmu.edu (Freya Robertson) Newsgroups: comp.sys.m68k Subject: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Oct26.200009.6719@cmu.edu> Date: Thu, 26 Oct 1995 20:00:09 GMT Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu 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? -- Freya Robertson "We don't sign stars. We build them." NeXTstation Turbo Color / SunOS 4.1.4 From mstewart@mit.edu Sat Oct 28 21:24:09 1995 Path: ashpoly!cascade!transat!ukc!fennimore!mit!mstewart From: mstewart@mit.edu (Mathieu Stewart) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Oct28.212409.3972@mit.edu> Date: Sat, 28 Oct 1995 21:24:09 GMT References: <1995Oct26.200009.6719@cmu.edu> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Oct26.200009.6719@cmu.edu>, frobertson@cmu.edu (Freya Robertson) 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! -- Mathieu Stewart *PLONK* filter active for trolls. Macintosh IIfx - NetBSD 1.0