From mbrennan@utexas.edu Sat May 20 09:44:48 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!utexas!mbrennan From: mbrennan@utexas.edu (Marisol Brennan) Newsgroups: comp.sys.m68k Subject: [FLAME] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995May20.094448.3075@utexas.edu> Date: Sat, 20 May 1995 09:44:48 GMT Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 11 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. One 28-pin EPROM socket (labeled U14) is completely empty. What firmware was supposed to be in that socket? -- Marisol Brennan *PLONK* filter active for trolls. Atari TT030 - NetBSD 1.0 From hpark@pipeline.com Mon May 22 11:18:48 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!pipeline!hpark From: hpark@pipeline.com (Hugo Park) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995May22.111848.1621@pipeline.com> Date: Mon, 22 May 1995 11:18:48 GMT References: <1995May20.094448.3075@utexas.edu> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995May20.094448.3075@utexas.edu>, mbrennan@utexas.edu (Marisol Brennan) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- === Hugo Park === Dept of Electrical Engineering, The Pipeline Internet Network "We don't sign stars. We build them." From evasiliev@utexas.edu Mon May 22 23:31:48 1995 Path: ashpoly!cascade!transat!ukc!fennimore!utexas!evasiliev From: evasiliev@utexas.edu (Emi Vasiliev) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995May22.233148.1303@utexas.edu> Date: Mon, 22 May 1995 23:31:48 GMT References: <1995May20.094448.3075@utexas.edu> <1995May22.111848.1621@pipeline.com> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: Netscape 1.1N Lines: 10 In article <1995May22.111848.1621@pipeline.com>, hpark@pipeline.com (Hugo Park) writes: > The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. Socket U14 was probably for the decryption key lookup table. Without that EPROM, CPU #1 is running in an idle loop. Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin! -- Emi Vasiliev Tape trading list upon request. SASE required for international mail. From vlindqvist@delphi.com Wed May 24 02:04:48 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!delphi!vlindqvist From: vlindqvist@delphi.com (Valeria Lindqvist) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995May24.020448.6325@delphi.com> Date: Wed, 24 May 1995 02:04:48 GMT References: <1995May20.094448.3075@utexas.edu> <1995May22.111848.1621@pipeline.com> <1995May22.233148.1303@utexas.edu> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995May22.233148.1303@utexas.edu>, evasiliev@utexas.edu (Emi Vasiliev) writes: > Socket U14 was probably for the decryption key lookup table. Without that EPROM, CPU #1 is running in an idle loop. Socket U14 was probably for the decryption key lookup table. Without that EPROM, CPU #1 is running in an idle loop. -- Valeria Lindqvist US Robotics Courier V.34 @ ISDN 64k bps "The carrier frequency does not drift by accident." From pandersson@unam.mx Wed May 24 03:59:48 1995 Path: ashpoly!cascade!mxgate!coyoacan!unam!pandersson From: pandersson@unam.mx (Pavel Andersson) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995May24.035948.1590@unam.mx> Date: Wed, 24 May 1995 03:59:48 GMT References: <1995May20.094448.3075@utexas.edu> <1995May22.111848.1621@pipeline.com> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1995May22.111848.1621@pipeline.com>, hpark@pipeline.com (Hugo Park) writes: > The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. Looks like a prototype telecommunications board for military secure voice, not an audio music product. Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin! -- Pavel Andersson Opinions expressed are solely my own and not those of Universidad Nacional Autónoma de México (DGSCA). ------------------------------------------------------------