From rsilva@hanse.de Mon Feb 20 20:23:12 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!hanse!rsilva From: rsilva@hanse.de (Rodrigo Silva) Newsgroups: comp.sys.m68k Subject: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Feb20.202312.2591@hanse.de> Date: Mon, 20 Feb 1995 20:23:12 GMT Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: WinVN 0.99.5 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. 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. -- Rodrigo Silva *PLONK* filter active for trolls. Acorn RiscPC 600 - NetBSD 1.0 From yschneider@cam.ac.uk Wed Feb 22 20:09:12 1995 Path: ashpoly!cascade!brgate!saturno!cam!yschneider From: yschneider@cam.ac.uk (Yuki Schneider) Newsgroups: comp.sys.m68k Subject: Re: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Feb22.200912.7872@cam.ac.uk> Date: Wed, 22 Feb 1995 20:09:12 GMT References: <1995Feb20.202312.2591@hanse.de> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Feb20.202312.2591@hanse.de>, rsilva@hanse.de (Rodrigo Silva) writes: > 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. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- Yuki Schneider Tape trading list upon request. SASE required for international mail. From alopez@titech.ac.jp Thu Feb 23 05:16:12 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!titech!alopez From: alopez@titech.ac.jp (Anton López) Newsgroups: comp.sys.m68k Subject: Re: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Feb23.051612.3530@titech.ac.jp> Date: Thu, 23 Feb 1995 05:16:12 GMT References: <1995Feb20.202312.2591@hanse.de> <1995Feb22.200912.7872@cam.ac.uk> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Feb22.200912.7872@cam.ac.uk>, yschneider@cam.ac.uk (Yuki Schneider) writes: > The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. Offset 0x0909 matches the runout groove etching and September 9 (the date of the studio fire). -- Anton López | alopez@titech.ac.jp PGP Key fingerprint: 353D 3C70 661D 6FDD "Keep the channels open."