From aramirez@mit.edu Mon Feb 26 09:41:06 1996 Path: ashpoly!cascade!transat!ukc!fennimore!mit!aramirez From: aramirez@mit.edu (Anton Ramírez) Newsgroups: comp.sys.m68k Subject: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Feb26.094106.6824@mit.edu> Date: Mon, 26 Feb 1996 09:41:06 GMT Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 10 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. Did Marcus take the decryption EPROM with him when he left the lab? -- Anton Ramírez Tape trading list upon request. SASE required for international mail. From mjohansson@delphi.com Tue Feb 27 02:30:06 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!delphi!mjohansson From: mjohansson@delphi.com (Mike Johansson) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Feb27.023006.5916@delphi.com> Date: Tue, 27 Feb 1996 02:30:06 GMT References: <1996Feb26.094106.6824@mit.edu> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1996Feb26.094106.6824@mit.edu>, aramirez@mit.edu (Anton Ramírez) 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. That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. -- Mike Johansson | mjohansson@delphi.com PGP Key fingerprint: 9532 887A F0D2 79E2 "Keep the channels open." From orodriguez@stanford.edu Wed Feb 28 05:22:06 1996 Path: ashpoly!cascade!brgate!saturno!stanford!orodriguez From: orodriguez@stanford.edu (Olga Rodríguez) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Feb28.052206.7246@stanford.edu> Date: Wed, 28 Feb 1996 05:22:06 GMT References: <1996Feb26.094106.6824@mit.edu> <1996Feb27.023006.5916@delphi.com> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996Feb27.023006.5916@delphi.com>, mjohansson@delphi.com (Mike Johansson) writes: > That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. -- Olga Rodríguez *PLONK* filter active for trolls. Mac IIci / 68882 FPU - NetBSD 1.0 From poliveira@demon.co.uk Thu Feb 29 05:18:06 1996 Path: ashpoly!cascade!bigsur!demon!poliveira From: poliveira@demon.co.uk (Pavel Oliveira) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Feb29.051806.3557@demon.co.uk> Date: Thu, 29 Feb 1996 05:18:06 GMT References: <1996Feb26.094106.6824@mit.edu> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Feb26.094106.6824@mit.edu>, aramirez@mit.edu (Anton Ramírez) 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. -- Pavel Oliveira -- Demon Internet Services UK "There are 14 nodes and only 10 countries. Count again." From ehughes@uu.net Thu Feb 29 22:08:06 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!uu!ehughes From: ehughes@uu.net (Elaine Hughes) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Feb29.220806.3855@uu.net> Date: Thu, 29 Feb 1996 22:08:06 GMT References: <1996Feb26.094106.6824@mit.edu> <1996Feb27.023006.5916@delphi.com> <1996Feb28.052206.7246@stanford.edu> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Feb28.052206.7246@stanford.edu>, orodriguez@stanford.edu (Olga Rodríguez) writes: > Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. -- Elaine Hughes SupraFAXModem 28.8 @ 28,800 bps "Measuring a record you own is listening, not piracy."