From sfournier@purdue.edu Sun Apr 02 23:07:52 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!purdue!sfournier From: sfournier@purdue.edu (Sergei Fournier) Newsgroups: comp.sys.m68k Subject: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Apr02.230752.4011@purdue.edu> Date: Sun, 02 Apr 1995 23:07:52 GMT Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: WinVN 0.99.5 Lines: 10 Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. Disassembling ROM #0 reveals an initialization routine that checks for a hardware dongle marked 'ORION-ENC-84'. At ROM offset 0x0909, the string 'M.H. // THE HATCH IS OPEN // ADVANCED ACOUSTICS LAB' is stored in ASCII. Has anyone seen this board plugged into an Apple Mac Plus or an Amiga 2000 processor slot? -- Sergei Fournier Tape trading list upon request. SASE required for international mail. From fgonzalez@uni-hamburg.de Mon Apr 03 21:58:52 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!uni-hamburg!fgonzalez From: fgonzalez@uni-hamburg.de (Freya González) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Apr03.215852.5645@uni-hamburg.de> Date: Mon, 03 Apr 1995 21:58:52 GMT References: <1995Apr02.230752.4011@purdue.edu> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Apr02.230752.4011@purdue.edu>, sfournier@purdue.edu (Sergei Fournier) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. Socket U14 was probably for the decryption key lookup table. Without that EPROM, CPU #1 is running in an idle loop. -- Freya González | fgonzalez@uni-hamburg.de PGP Key fingerprint: 8173 2865 7347 9987 "Keep the channels open." From jkarlsson@unam.mx Wed Apr 05 03:01:52 1995 Path: ashpoly!cascade!mxgate!coyoacan!unam!jkarlsson From: jkarlsson@unam.mx (Julien Karlsson) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Apr05.030152.1034@unam.mx> Date: Wed, 05 Apr 1995 03:01:52 GMT References: <1995Apr02.230752.4011@purdue.edu> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Apr02.230752.4011@purdue.edu>, sfournier@purdue.edu (Sergei Fournier) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. Looks like a prototype telecommunications board for military secure voice, not an audio music product. -- Julien Karlsson *PLONK* filter active for trolls. Sun SparcStation 20 - NetBSD 1.0 From nivanov@rwth-aachen.de Wed Apr 05 07:02:52 1995 Path: ashpoly!cascade!bigsur!rwth-aachen!nivanov From: nivanov@rwth-aachen.de (Natalia Ivanov) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Apr05.070252.8053@rwth-aachen.de> Date: Wed, 05 Apr 1995 07:02:52 GMT References: <1995Apr02.230752.4011@purdue.edu> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Apr02.230752.4011@purdue.edu>, sfournier@purdue.edu (Sergei Fournier) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. > Disassembling ROM #0 reveals an initialization routine that checks for a hardware dongle marked 'ORION-ENC-84'. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- Natalia Ivanov *PLONK* filter active for trolls. Macintosh IIfx - NetBSD 1.0