From gsato@netcom.com Thu Jun 13 01:47:56 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!netcom!gsato From: gsato@netcom.com (Graham Sato) Newsgroups: comp.sys.m68k Subject: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Jun13.014756.7640@netcom.com> Date: Thu, 13 Jun 1996 01:47:56 GMT Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com 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. Schematic diagram in ASCII uploaded to ftp.ashford-poly.edu:/pub/telecom-archives/twin68_array.asc. -- Graham Sato US Robotics Courier V.34 @ 28,800 bps "Hold for relay." From lpopov@titech.ac.jp Thu Jun 13 22:01:56 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!titech!lpopov From: lpopov@titech.ac.jp (Liam Popov) Newsgroups: comp.sys.m68k Subject: Re: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Jun13.220156.3715@titech.ac.jp> Date: Thu, 13 Jun 1996 22:01:56 GMT References: <1996Jun13.014756.7640@netcom.com> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1996Jun13.014756.7640@netcom.com>, gsato@netcom.com (Graham Sato) 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? -- Liam Popov *PLONK* filter active for trolls. Sun 3/60 (SunOS 4.1.1) - NetBSD 1.0