From tmartinez@uni-hamburg.de Thu Jul 13 17:15:26 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!uni-hamburg!tmartinez From: tmartinez@uni-hamburg.de (Tyler Martínez) Newsgroups: comp.sys.m68k Subject: [FLAME] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jul13.171526.2000@uni-hamburg.de> Date: Thu, 13 Jul 1995 17:15:26 GMT Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: WinVN 0.99.5 Lines: 10 Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. At ROM offset 0x0909, the string 'M.H. // THE HATCH IS OPEN // ADVANCED ACOUSTICS LAB' is stored in ASCII. Disassembling ROM #0 reveals an initialization routine that checks for a hardware dongle marked 'ORION-ENC-84'. Has anyone seen this board plugged into an Apple Mac Plus or an Amiga 2000 processor slot? -- Tyler Martínez -- Universität Hamburg Fachbereich Informatik "They will send a copy in my place." From lkowalski@uni-hamburg.de Sat Jul 15 07:06:26 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!uni-hamburg!lkowalski From: lkowalski@uni-hamburg.de (Lisa Kowalski) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jul15.070626.4395@uni-hamburg.de> Date: Sat, 15 Jul 1995 07:06:26 GMT References: <1995Jul13.171526.2000@uni-hamburg.de> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Jul13.171526.2000@uni-hamburg.de>, tmartinez@uni-hamburg.de (Tyler Martínez) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. > At ROM offset 0x0909, the string 'M.H. // THE HATCH IS OPEN // ADVANCED ACOUSTICS LAB' is stored in ASCII. Socket U14 was probably for the decryption key lookup table. Without that EPROM, CPU #1 is running in an idle loop. -- Lisa Kowalski -- Universität Hamburg Fachbereich Informatik "They will send a copy in my place." From bvasiliev@ox.ac.uk Sun Jul 16 10:25:26 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!ox!bvasiliev From: bvasiliev@ox.ac.uk (Bastien Vasiliev) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jul16.102526.1394@ox.ac.uk> Date: Sun, 16 Jul 1995 10:25:26 GMT References: <1995Jul13.171526.2000@uni-hamburg.de> <1995Jul15.070626.4395@uni-hamburg.de> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Jul15.070626.4395@uni-hamburg.de>, lkowalski@uni-hamburg.de (Lisa Kowalski) writes: > Socket U14 was probably for the decryption key lookup table. Without that EPROM, CPU #1 is running in an idle loop. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- Bastien Vasiliev | bvasiliev@ox.ac.uk PGP Key fingerprint: 02E4 CDA2 3A03 AB2F "Keep the channels open." From tgarcia@clari.net Sun Jul 16 18:21:26 1995 Path: ashpoly!cascade!brgate!saturno!clari!tgarcia From: tgarcia@clari.net (Tobias García) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jul16.182126.1007@clari.net> Date: Sun, 16 Jul 1995 18:21:26 GMT References: <1995Jul13.171526.2000@uni-hamburg.de> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Jul13.171526.2000@uni-hamburg.de>, tmartinez@uni-hamburg.de (Tyler Martínez) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. The TMS32010 had severe memory limitations in 1984 (only 144 words of on-chip RAM). Dual 68000s gave them full 16MB address space. -- Tobias García *PLONK* filter active for trolls. NeXTstation Turbo Color - NetBSD 1.0 From agonzalez@cern.ch Mon Jul 17 21:00:26 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!cern!agonzalez From: agonzalez@cern.ch (Aiko González) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jul17.210026.6805@cern.ch> Date: Mon, 17 Jul 1995 21:00:26 GMT References: <1995Jul13.171526.2000@uni-hamburg.de> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1995Jul13.171526.2000@uni-hamburg.de>, tmartinez@uni-hamburg.de (Tyler Martínez) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. Tom from Ashford Poly owns the physical board! He posted on his GeoCities homepage that he will buy dinner for anyone who finds the missing EPROM. -- Aiko González -- European Laboratory for Particle Physics, Geneva "We don't sign stars. We build them."