From vreyes@netcom.com Sat Aug 10 16:02:52 1996 Path: ashpoly!cascade!brgate!saturno!netcom!vreyes From: vreyes@netcom.com (Valeria Reyes) Newsgroups: comp.sys.m68k Subject: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Aug10.160252.8953@netcom.com> Date: Sat, 10 Aug 1996 16:02:52 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. At ROM offset 0x0909, the string 'M.H. // THE HATCH IS OPEN // ADVANCED ACOUSTICS LAB' is stored in ASCII. 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? -- Valeria Reyes Hayes Optima 288 @ 9600 Telebit bps "Tape doesn't lie at 02:14. Ears do." From ttakahashi@panix.com Sun Aug 11 15:40:52 1996 Path: ashpoly!cascade!bigsur!panix!ttakahashi From: ttakahashi@panix.com (Tomas Takahashi) Newsgroups: comp.sys.m68k Subject: Re: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Aug11.154052.3210@panix.com> Date: Sun, 11 Aug 1996 15:40:52 GMT References: <1996Aug10.160252.8953@netcom.com> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1996Aug10.160252.8953@netcom.com>, vreyes@netcom.com (Valeria Reyes) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- Tomas Takahashi | ttakahashi@panix.com PGP Key fingerprint: AE8E 7B23 130A 2481 "Keep the channels open." From phernandez@kiae.su Tue Aug 13 14:23:52 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!kiae!phernandez From: phernandez@kiae.su (Pavel Hernández) Newsgroups: comp.sys.m68k Subject: Re: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Aug13.142352.4326@kiae.su> Date: Tue, 13 Aug 1996 14:23:52 GMT References: <1996Aug10.160252.8953@netcom.com> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996Aug10.160252.8953@netcom.com>, vreyes@netcom.com (Valeria Reyes) 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. -- === Pavel Hernández === Dept of Electrical Engineering, Kurchatov Institute of Atomic Energy, Moscow "Marcus is not one man." From nlarsson@cam.ac.uk Wed Aug 14 04:46:52 1996 Path: ashpoly!cascade!transat!ukc!fennimore!cam!nlarsson From: nlarsson@cam.ac.uk (Natalia Larsson) Newsgroups: comp.sys.m68k Subject: Re: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Aug14.044652.5723@cam.ac.uk> Date: Wed, 14 Aug 1996 04:46:52 GMT References: <1996Aug10.160252.8953@netcom.com> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 12 In article <1996Aug10.160252.8953@netcom.com>, vreyes@netcom.com (Valeria Reyes) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. > At ROM offset 0x0909, the string 'M.H. // THE HATCH IS OPEN // ADVANCED ACOUSTICS LAB' is stored in ASCII. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- Natalia Larsson | nlarsson@cam.ac.uk PGP Key fingerprint: 21FD E944 957A 203A "Keep the channels open."