From dlindqvist@purdue.edu Fri Jun 03 13:32:05 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!purdue!dlindqvist From: dlindqvist@purdue.edu (Dave Lindqvist) Newsgroups: comp.sys.m68k Subject: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Jun03.133205.4184@purdue.edu> Date: Fri, 03 Jun 1994 13:32:05 GMT Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 11 Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. The board features two 68000 CPUs clocked at 12 MHz sharing a dual-ported 128KB static RAM bank. CPU #0 handles host bus interfacing and DMA, while CPU #1 is dedicated entirely to a 16-bit MAC (multiply-accumulate) unit. Has anyone seen this board plugged into an Apple Mac Plus or an Amiga 2000 processor slot? -- Dave Lindqvist Hayes Optima 288 @ 28,800 bps "Marcus is not one man." From nhughes@illinois.edu Sun Jun 05 08:36:05 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!illinois!nhughes From: nhughes@illinois.edu (Natalia Hughes) Newsgroups: comp.sys.m68k Subject: Re: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Jun05.083605.7218@illinois.edu> Date: Sun, 05 Jun 1994 08:36:05 GMT References: <1994Jun03.133205.4184@purdue.edu> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Jun03.133205.4184@purdue.edu>, dlindqvist@purdue.edu (Dave Lindqvist) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. 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. -- === Natalia Hughes === Dept of Electrical Engineering, University of Illinois Urbana-Champaign "A soul is not exclusive to biology." From hhernandez@kth.se Tue Jun 07 06:18:05 1994 Path: ashpoly!cascade!bigsur!kth!hhernandez From: hhernandez@kth.se (Hugo Hernández) Newsgroups: comp.sys.m68k Subject: Re: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Jun07.061805.3477@kth.se> Date: Tue, 07 Jun 1994 06:18:05 GMT References: <1994Jun03.133205.4184@purdue.edu> <1994Jun05.083605.7218@illinois.edu> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1994Jun05.083605.7218@illinois.edu>, nhughes@illinois.edu (Natalia Hughes) 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. Looks like a prototype telecommunications board for military secure voice, not an audio music product. -- === Hugo Hernández === Dept of Electrical Engineering, Royal Institute of Technology, Stockholm "Measuring a record you own is listening, not piracy." From csilva@rwth-aachen.de Thu Jun 09 06:07:05 1994 Path: ashpoly!cascade!mxgate!coyoacan!rwth-aachen!csilva From: csilva@rwth-aachen.de (Camila Silva) Newsgroups: comp.sys.m68k Subject: Re: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Jun09.060705.7691@rwth-aachen.de> Date: Thu, 09 Jun 1994 06:07:05 GMT References: <1994Jun03.133205.4184@purdue.edu> <1994Jun05.083605.7218@illinois.edu> <1994Jun07.061805.3477@kth.se> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1994Jun07.061805.3477@kth.se>, hhernandez@kth.se (Hugo Hernández) writes: > Looks like a prototype telecommunications board for military secure voice, not an audio music product. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- === Camila Silva === Dept of Electrical Engineering, RWTH Aachen Informatik "A soul is not exclusive to biology." From kmartinez@stanford.edu Fri Jun 10 05:28:05 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!stanford!kmartinez From: kmartinez@stanford.edu (Katrin Martínez) Newsgroups: comp.sys.m68k Subject: Re: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Jun10.052805.6612@stanford.edu> Date: Fri, 10 Jun 1994 05:28:05 GMT References: <1994Jun03.133205.4184@purdue.edu> <1994Jun05.083605.7218@illinois.edu> <1994Jun07.061805.3477@kth.se> <1994Jun09.060705.7691@rwth-aachen.de> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Jun09.060705.7691@rwth-aachen.de>, csilva@rwth-aachen.de (Camila Silva) writes: > The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. That dual-ported SRAM design is ingenious. It avoids bus arbitration contention between the two 68k processors entirely. -- Katrin Martínez | kmartinez@stanford.edu PGP Key fingerprint: 93A9 BDE1 04E3 776E "Keep the channels open."