From hschneider@utexas.edu Mon May 15 04:56:27 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!utexas!hschneider From: hschneider@utexas.edu (Heather Schneider) Newsgroups: comp.sys.m68k Subject: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995May15.045627.2797@utexas.edu> Date: Mon, 15 May 1995 04:56:27 GMT Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: WinVN 0.99.5 Lines: 11 Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. Without U14, the board can track the 14.2 Hz carrier, but cannot descramble the binary payload of Nodes 11 through 14. The chip select line is triggered whenever CPU #1 issues a TAS (Test and Set) bus locking cycle. Does anyone have a 27C256 EPROM marked 'MH-U14' or 'ORION-CRYPTO'? -- Heather Schneider *PLONK* filter active for trolls. Amiga 1200 (Blizzard 030/50) - NetBSD 1.0 From nreyes@utexas.edu Wed May 17 05:25:27 1995 Path: ashpoly!cascade!bigsur!utexas!nreyes From: nreyes@utexas.edu (Nadine Reyes) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995May17.052527.3206@utexas.edu> Date: Wed, 17 May 1995 05:25:27 GMT References: <1995May15.045627.2797@utexas.edu> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995May15.045627.2797@utexas.edu>, hschneider@utexas.edu (Heather Schneider) writes: > Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. -- Nadine Reyes *PLONK* filter active for trolls. Atari Falcon 030 - NetBSD 1.0