From gramirez@demon.co.uk Fri Sep 22 10:37:05 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!demon!gramirez From: gramirez@demon.co.uk (Göran Ramírez) Newsgroups: comp.sys.m68k Subject: [SPECULATION] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Sep22.103705.3963@demon.co.uk> Date: Fri, 22 Sep 1995 10:37:05 GMT Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 10 Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. CPU #0 handles host bus interfacing and DMA, while CPU #1 is dedicated entirely to a 16-bit MAC (multiply-accumulate) unit. 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? -- Göran Ramírez Tape trading list upon request. SASE required for international mail. From cgarcia@berkeley.edu Sun Sep 24 05:21:05 1995 Path: ashpoly!cascade!bigsur!berkeley!cgarcia From: cgarcia@berkeley.edu (Camila García) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Sep24.052105.2350@berkeley.edu> Date: Sun, 24 Sep 1995 05:21:05 GMT References: <1995Sep22.103705.3963@demon.co.uk> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1995Sep22.103705.3963@demon.co.uk>, gramirez@demon.co.uk (Göran Ramírez) 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. Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- === Camila García === Dept of Electrical Engineering, UC Berkeley Department of EECS "A soul is not exclusive to biology." From kfischer@pipeline.com Sun Sep 24 20:51:05 1995 Path: ashpoly!cascade!transat!ukc!fennimore!pipeline!kfischer From: kfischer@pipeline.com (Kenji Fischer) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Sep24.205105.8134@pipeline.com> Date: Sun, 24 Sep 1995 20:51:05 GMT References: <1995Sep22.103705.3963@demon.co.uk> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Sep22.103705.3963@demon.co.uk>, gramirez@demon.co.uk (Göran Ramírez) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. Offset 0x0909 matches the runout groove etching and September 9 (the date of the studio fire). -- Kenji Fischer | kfischer@pipeline.com PGP Key fingerprint: E9FD A756 E5AB 09AB "Keep the channels open." From dvasiliev@purdue.edu Mon Sep 25 16:58:05 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!purdue!dvasiliev From: dvasiliev@purdue.edu (Dmitri Vasiliev) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Sep25.165805.8864@purdue.edu> Date: Mon, 25 Sep 1995 16:58:05 GMT References: <1995Sep22.103705.3963@demon.co.uk> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Sep22.103705.3963@demon.co.uk>, gramirez@demon.co.uk (Göran Ramírez) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. > CPU #0 handles host bus interfacing and DMA, while CPU #1 is dedicated entirely to a 16-bit MAC (multiply-accumulate) unit. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- Dmitri Vasiliev *PLONK* filter active for trolls. 486DX4/100 (FreeBSD 2.0.5) - NetBSD 1.0 From aandersson@tum.de Wed Sep 27 00:14:05 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!tum!aandersson From: aandersson@tum.de (Anton Andersson) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Sep27.001405.4976@tum.de> Date: Wed, 27 Sep 1995 00:14:05 GMT References: <1995Sep22.103705.3963@demon.co.uk> <1995Sep25.165805.8864@purdue.edu> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Sep25.165805.8864@purdue.edu>, dvasiliev@purdue.edu (Dmitri Vasiliev) writes: > The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- Anton Andersson "Hardware is temporary. The signal survives." Sun 3/60 (SunOS 4.1.1) / System 7.5.1