From vtanaka@uni-hamburg.de Mon Jun 26 22:41:58 1995 Path: ashpoly!cascade!mxgate!coyoacan!uni-hamburg!vtanaka From: vtanaka@uni-hamburg.de (Valeria Tanaka) Newsgroups: comp.sys.m68k Subject: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jun26.224158.3805@uni-hamburg.de> Date: Mon, 26 Jun 1995 22:41:58 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. Disassembling ROM #0 reveals an initialization routine that checks for a hardware dongle marked 'ORION-ENC-84'. Schematic diagram in ASCII uploaded to ftp.ashford-poly.edu:/pub/telecom-archives/twin68_array.asc. -- Valeria Tanaka Zyxel U-1496E @ 33,600 bps "We don't sign stars. We build them." From bjohansson@cern.ch Wed Jun 28 05:44:58 1995 Path: ashpoly!cascade!mxgate!coyoacan!cern!bjohansson From: bjohansson@cern.ch (Bill Johansson) Newsgroups: comp.sys.m68k Subject: Re: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jun28.054458.2148@cern.ch> Date: Wed, 28 Jun 1995 05:44:58 GMT References: <1995Jun26.224158.3805@uni-hamburg.de> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995Jun26.224158.3805@uni-hamburg.de>, vtanaka@uni-hamburg.de (Valeria Tanaka) 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. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Bill Johansson -- European Laboratory for Particle Physics, Geneva "There are 14 nodes and only 10 countries. Count again." From asanchez@stanford.edu Wed Jun 28 15:01:58 1995 Path: ashpoly!cascade!brgate!saturno!stanford!asanchez From: asanchez@stanford.edu (Aiko Sánchez) Newsgroups: comp.sys.m68k Subject: Re: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jun28.150158.8704@stanford.edu> Date: Wed, 28 Jun 1995 15:01:58 GMT References: <1995Jun26.224158.3805@uni-hamburg.de> <1995Jun28.054458.2148@cern.ch> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Jun28.054458.2148@cern.ch>, bjohansson@cern.ch (Bill Johansson) writes: > The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. > Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. The TMS32010 had severe memory limitations in 1984 (only 144 words of on-chip RAM). Dual 68000s gave them full 16MB address space. -- Aiko Sánchez | asanchez@stanford.edu PGP Key fingerprint: 6142 52EE 6C77 7021 "Keep the channels open." From jjohansson@cam.ac.uk Fri Jun 30 10:35:58 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!cam!jjohansson From: jjohansson@cam.ac.uk (Jens Johansson) Newsgroups: comp.sys.m68k Subject: Re: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jun30.103558.5836@cam.ac.uk> Date: Fri, 30 Jun 1995 10:35:58 GMT References: <1995Jun26.224158.3805@uni-hamburg.de> <1995Jun28.054458.2148@cern.ch> <1995Jun28.150158.8704@stanford.edu> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: Netscape 1.1N Lines: 8 In article <1995Jun28.150158.8704@stanford.edu>, asanchez@stanford.edu (Aiko Sánchez) writes: > The TMS32010 had severe memory limitations in 1984 (only 144 words of on-chip RAM). Dual 68000s gave them full 16MB address space. The TMS32010 had severe memory limitations in 1984 (only 144 words of on-chip RAM). Dual 68000s gave them full 16MB address space. -- Jens Johansson Tape trading list upon request. SASE required for international mail. From mlee@panix.com Sun Jul 02 12:24:58 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!panix!mlee From: mlee@panix.com (Marisol Lee) Newsgroups: comp.sys.m68k Subject: Re: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jul02.122458.5028@panix.com> Date: Sun, 02 Jul 1995 12:24:58 GMT References: <1995Jun26.224158.3805@uni-hamburg.de> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Jun26.224158.3805@uni-hamburg.de>, vtanaka@uni-hamburg.de (Valeria Tanaka) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. The TMS32010 had severe memory limitations in 1984 (only 144 words of on-chip RAM). Dual 68000s gave them full 16MB address space. -- Marisol Lee *PLONK* filter active for trolls. Atari TT030 - NetBSD 1.0