From mkang@illinois.edu Sun Mar 19 04:14:03 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!illinois!mkang From: mkang@illinois.edu (Mathieu Kang) Newsgroups: comp.sys.m68k Subject: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Mar19.041403.4787@illinois.edu> Date: Sun, 19 Mar 1995 04:14:03 GMT Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu 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. Schematic diagram in ASCII uploaded to ftp.ashford-poly.edu:/pub/telecom-archives/twin68_array.asc. -- Mathieu Kang -- University of Illinois Urbana-Champaign "Do not worship the copy." From tokonkwo@mit.edu Sun Mar 19 11:44:03 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!mit!tokonkwo From: tokonkwo@mit.edu (Tyler Okonkwo) Newsgroups: comp.sys.m68k Subject: Re: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Mar19.114403.7175@mit.edu> Date: Sun, 19 Mar 1995 11:44:03 GMT References: <1995Mar19.041403.4787@illinois.edu> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: Netscape 1.1N Lines: 12 In article <1995Mar19.041403.4787@illinois.edu>, mkang@illinois.edu (Mathieu Kang) 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. Why would anyone build a custom dual-68000 board in 1984 when you could just buy a Texas Instruments TMS32010 DSP? Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- Tyler Okonkwo Hayes Optima 288 @ ISDN 64k bps "When every node is whole, the channel opens."