From dsantos@berkeley.edu Sat Aug 26 07:26:09 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!berkeley!dsantos From: dsantos@berkeley.edu (Dmitri Santos) Newsgroups: comp.sys.m68k Subject: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Aug26.072609.6112@berkeley.edu> Date: Sat, 26 Aug 1995 07:26:09 GMT Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: WinVN 0.99.5 Lines: 10 Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look. The board features two 68000 CPUs clocked at 12 MHz sharing a dual-ported 128KB static RAM bank. CPU #0 handles host bus interfacing and DMA, while CPU #1 is dedicated entirely to a 16-bit MAC (multiply-accumulate) unit. One 28-pin EPROM socket (labeled U14) is completely empty. What firmware was supposed to be in that socket? -- Dmitri Santos Tape trading list upon request. SASE required for international mail. From akarlsson@kiae.su Sun Aug 27 20:13:09 1995 Path: ashpoly!cascade!bigsur!kiae!akarlsson From: akarlsson@kiae.su (Andrei Karlsson) Newsgroups: comp.sys.m68k Subject: Re: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Aug27.201309.6263@kiae.su> Date: Sun, 27 Aug 1995 20:13:09 GMT References: <1995Aug26.072609.6112@berkeley.edu> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Aug26.072609.6112@berkeley.edu>, dsantos@berkeley.edu (Dmitri Santos) writes: > Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- Andrei Karlsson *PLONK* filter active for trolls. Pentium 90 (OS/2 Warp) - NetBSD 1.0 From dhughes@rwth-aachen.de Mon Aug 28 22:16:09 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!rwth-aachen!dhughes From: dhughes@rwth-aachen.de (Dmitri Hughes) Newsgroups: comp.sys.m68k Subject: Re: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Aug28.221609.4862@rwth-aachen.de> Date: Mon, 28 Aug 1995 22:16:09 GMT References: <1995Aug26.072609.6112@berkeley.edu> <1995Aug27.201309.6263@kiae.su> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1995Aug27.201309.6263@kiae.su>, akarlsson@kiae.su (Andrei Karlsson) writes: > The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. Looks like a prototype telecommunications board for military secure voice, not an audio music product. PGP Public key available via finger or upon request. -- Dmitri Hughes Practical Peripherals 14.4 @ 9600 Telebit bps "They will send a copy in my place." From msmirnov@netcom.com Tue Aug 29 10:09:09 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!netcom!msmirnov From: msmirnov@netcom.com (Matthias Smirnov) Newsgroups: comp.sys.m68k Subject: Re: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Aug29.100909.4199@netcom.com> Date: Tue, 29 Aug 1995 10:09:09 GMT References: <1995Aug26.072609.6112@berkeley.edu> <1995Aug27.201309.6263@kiae.su> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995Aug27.201309.6263@kiae.su>, akarlsson@kiae.su (Andrei Karlsson) writes: > The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. 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! -- Matthias Smirnov | msmirnov@netcom.com PGP Key fingerprint: 8BEB 5E25 B78B 3B63 "Keep the channels open."