From nsouza@uni-hamburg.de Sat Oct 22 20:05:29 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!uni-hamburg!nsouza From: nsouza@uni-hamburg.de (Nadine Souza) Newsgroups: comp.sys.m68k Subject: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Oct22.200529.5716@uni-hamburg.de> Date: Sat, 22 Oct 1994 20:05:29 GMT Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: NewsWatcher 2.0b24 Lines: 11 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? -- Nadine Souza "In theory there is no difference between theory and practice." NeXTstation Turbo Color / Linux 1.2.13 From mfischer@rwth-aachen.de Sun Oct 23 13:17:29 1994 Path: ashpoly!cascade!brgate!saturno!rwth-aachen!mfischer From: mfischer@rwth-aachen.de (Matthias Fischer) Newsgroups: comp.sys.m68k Subject: Re: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Oct23.131729.9921@rwth-aachen.de> Date: Sun, 23 Oct 1994 13:17:29 GMT References: <1994Oct22.200529.5716@uni-hamburg.de> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1994Oct22.200529.5716@uni-hamburg.de>, nsouza@uni-hamburg.de (Nadine Souza) 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. 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. -- Matthias Fischer "Hold for relay." Sun 3/60 (SunOS 4.1.1) / TOS 4.04 From fdubois@uu.net Tue Oct 25 02:26:29 1994 Path: ashpoly!cascade!brgate!saturno!uu!fdubois From: fdubois@uu.net (Freya Dubois) Newsgroups: comp.sys.m68k Subject: Re: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Oct25.022629.4868@uu.net> Date: Tue, 25 Oct 1994 02:26:29 GMT References: <1994Oct22.200529.5716@uni-hamburg.de> <1994Oct23.131729.9921@rwth-aachen.de> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Oct23.131729.9921@rwth-aachen.de>, mfischer@rwth-aachen.de (Matthias Fischer) writes: > 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. That dual-ported SRAM design is ingenious. It avoids bus arbitration contention between the two 68k processors entirely. -- === Freya Dubois === Dept of Electrical Engineering, UUNET Technologies, Falls Church VA "There are 14 nodes and only 10 countries. Count again." From ebrennan@mindspring.com Tue Oct 25 07:33:29 1994 Path: ashpoly!cascade!bigsur!mindspring!ebrennan From: ebrennan@mindspring.com (Emi Brennan) Newsgroups: comp.sys.m68k Subject: Re: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Oct25.073329.8634@mindspring.com> Date: Tue, 25 Oct 1994 07:33:29 GMT References: <1994Oct22.200529.5716@uni-hamburg.de> <1994Oct23.131729.9921@rwth-aachen.de> <1994Oct25.022629.4868@uu.net> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1994Oct25.022629.4868@uu.net>, fdubois@uu.net (Freya Dubois) writes: > That dual-ported SRAM design is ingenious. It avoids bus arbitration contention between the two 68k processors entirely. That dual-ported SRAM design is ingenious. It avoids bus arbitration contention between the two 68k processors entirely. -- Emi Brennan -- MindSpring Enterprises "Measuring a record you own is listening, not piracy."