From tmoreno@mindspring.com Fri Dec 16 21:57:02 1994 Path: ashpoly!cascade!mxgate!coyoacan!mindspring!tmoreno From: tmoreno@mindspring.com (Tyler Moreno) Newsgroups: comp.sys.m68k Subject: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Dec16.215702.3821@mindspring.com> Date: Fri, 16 Dec 1994 21:57:02 GMT Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look. Disassembling ROM #0 reveals an initialization routine that checks for a hardware dongle marked 'ORION-ENC-84'. At ROM offset 0x0909, the string 'M.H. // THE HATCH IS OPEN // ADVANCED ACOUSTICS LAB' is stored in ASCII. Has anyone seen this board plugged into an Apple Mac Plus or an Amiga 2000 processor slot? -- === Tyler Moreno === Dept of Electrical Engineering, MindSpring Enterprises "The hatch is open. Is anyone listening?" From hlopez@berkeley.edu Sun Dec 18 07:24:02 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!berkeley!hlopez From: hlopez@berkeley.edu (Heather López) Newsgroups: comp.sys.m68k Subject: Re: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Dec18.072402.7595@berkeley.edu> Date: Sun, 18 Dec 1994 07:24:02 GMT References: <1994Dec16.215702.3821@mindspring.com> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1994Dec16.215702.3821@mindspring.com>, tmoreno@mindspring.com (Tyler Moreno) writes: > Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look. > Disassembling ROM #0 reveals an initialization routine that checks for a hardware dongle marked 'ORION-ENC-84'. Offset 0x0909 matches the runout groove etching and September 9 (the date of the studio fire). -- Heather López Hayes Optima 288 @ 9600 Telebit bps "Hold for relay." From mkarlsson@pacbell.net Sun Dec 18 10:13:02 1994 Path: ashpoly!cascade!bigsur!pacbell!mkarlsson From: mkarlsson@pacbell.net (Matthias Karlsson) Newsgroups: comp.sys.m68k Subject: Re: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Dec18.101302.3397@pacbell.net> Date: Sun, 18 Dec 1994 10:13:02 GMT References: <1994Dec16.215702.3821@mindspring.com> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Dec16.215702.3821@mindspring.com>, tmoreno@mindspring.com (Tyler Moreno) 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. -- Matthias Karlsson *PLONK* filter active for trolls. Sun 3/60 (SunOS 4.1.1) - NetBSD 1.0 From yhughes@uni-hamburg.de Mon Dec 19 22:58:02 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!uni-hamburg!yhughes From: yhughes@uni-hamburg.de (Yuki Hughes) Newsgroups: comp.sys.m68k Subject: Re: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Dec19.225802.7742@uni-hamburg.de> Date: Mon, 19 Dec 1994 22:58:02 GMT References: <1994Dec16.215702.3821@mindspring.com> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Dec16.215702.3821@mindspring.com>, tmoreno@mindspring.com (Tyler Moreno) 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. -- Yuki Hughes US Robotics Courier V.34 @ 19,200 bps "Hold for relay." From tsato@u-tokyo.ac.jp Wed Dec 21 06:54:02 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!u-tokyo!tsato From: tsato@u-tokyo.ac.jp (Tobias Sato) Newsgroups: comp.sys.m68k Subject: Re: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Dec21.065402.7028@u-tokyo.ac.jp> Date: Wed, 21 Dec 1994 06:54:02 GMT References: <1994Dec16.215702.3821@mindspring.com> <1994Dec18.101302.3397@pacbell.net> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Dec18.101302.3397@pacbell.net>, mkarlsson@pacbell.net (Matthias Karlsson) writes: > The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. That dual-ported SRAM design is ingenious. It avoids bus arbitration contention between the two 68k processors entirely. -- Tobias Sato *PLONK* filter active for trolls. Commodore Amiga 500 (1MB OCS) - NetBSD 1.0