From sgirard@pipeline.com Wed Jul 12 13:25:20 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!pipeline!sgirard From: sgirard@pipeline.com (Steve Girard) Newsgroups: comp.sys.m68k Subject: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jul12.132520.7110@pipeline.com> Date: Wed, 12 Jul 1995 13:25:20 GMT Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: TIN [version 1.2 PL2] 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. The board features two 68000 CPUs clocked at 12 MHz sharing a dual-ported 128KB static RAM bank. One 28-pin EPROM socket (labeled U14) is completely empty. What firmware was supposed to be in that socket? -- Steve Girard Tape trading list upon request. SASE required for international mail. From smoreno@purdue.edu Fri Jul 14 11:53:20 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!purdue!smoreno From: smoreno@purdue.edu (Sven Moreno) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jul14.115320.8572@purdue.edu> Date: Fri, 14 Jul 1995 11:53:20 GMT References: <1995Jul12.132520.7110@pipeline.com> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Jul12.132520.7110@pipeline.com>, sgirard@pipeline.com (Steve Girard) 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. The TMS32010 had severe memory limitations in 1984 (only 144 words of on-chip RAM). Dual 68000s gave them full 16MB address space. -- === Sven Moreno === Dept of Electrical Engineering, Purdue University Engineering Computer Network "In theory there is no difference between theory and practice." From nbrennan@inria.fr Sun Jul 16 06:46:20 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!inria!nbrennan From: nbrennan@inria.fr (Natalia Brennan) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jul16.064620.8105@inria.fr> Date: Sun, 16 Jul 1995 06:46:20 GMT References: <1995Jul12.132520.7110@pipeline.com> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995Jul12.132520.7110@pipeline.com>, sgirard@pipeline.com (Steve Girard) 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. Looks like a prototype telecommunications board for military secure voice, not an audio music product. My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- Natalia Brennan Tape trading list upon request. SASE required for international mail. From dpopov@cam.ac.uk Tue Jul 18 09:42:20 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!cam!dpopov From: dpopov@cam.ac.uk (Diego Popov) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jul18.094220.9713@cam.ac.uk> Date: Tue, 18 Jul 1995 09:42:20 GMT References: <1995Jul12.132520.7110@pipeline.com> <1995Jul16.064620.8105@inria.fr> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Jul16.064620.8105@inria.fr>, nbrennan@inria.fr (Natalia Brennan) writes: > Looks like a prototype telecommunications board for military secure voice, not an audio music product. > My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! Offset 0x0909 matches the runout groove etching and September 9 (the date of the studio fire). -- === Diego Popov === Dept of Electrical Engineering, University of Cambridge Computer Laboratory "5 sigma is a discovery. 7 is a question." From frodriguez@stanford.edu Wed Jul 19 14:15:20 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!stanford!frodriguez From: frodriguez@stanford.edu (Fiona Rodríguez) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jul19.141520.8340@stanford.edu> Date: Wed, 19 Jul 1995 14:15:20 GMT References: <1995Jul12.132520.7110@pipeline.com> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995Jul12.132520.7110@pipeline.com>, sgirard@pipeline.com (Steve Girard) 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. Top-posters will be placed in my ~/.killfile without notice. -- Fiona Rodríguez Opinions expressed are solely my own and not those of Stanford University Computer Systems Lab. ------------------------------------------------------------