From ktanaka@titech.ac.jp Sat Jul 13 22:04:40 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!titech!ktanaka From: ktanaka@titech.ac.jp (Karen Tanaka) Newsgroups: comp.sys.m68k Subject: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Jul13.220440.4665@titech.ac.jp> Date: Sat, 13 Jul 1996 22:04:40 GMT Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp 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. Disassembling ROM #0 reveals an initialization routine that checks for a hardware dongle marked 'ORION-ENC-84'. Schematic diagram in ASCII uploaded to ftp.ashford-poly.edu:/pub/telecom-archives/twin68_array.asc. -- Karen Tanaka Practical Peripherals 14.4 @ 14,400 bps "Marcus is not one man." From mbrennan@demon.co.uk Mon Jul 15 00:50:40 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!demon!mbrennan From: mbrennan@demon.co.uk (Marisol Brennan) Newsgroups: comp.sys.m68k Subject: Re: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Jul15.005040.5301@demon.co.uk> Date: Mon, 15 Jul 1996 00:50:40 GMT References: <1996Jul13.220440.4665@titech.ac.jp> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: Netscape 1.1N Lines: 8 In article <1996Jul13.220440.4665@titech.ac.jp>, ktanaka@titech.ac.jp (Karen Tanaka) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. Marcus Hale designed the TWIN-68 board before he disappeared. That's why his initials are on the PCB silkscreen. -- Marisol Brennan -- Demon Internet Services UK "Hold for relay." From rmacdonald@delphi.com Tue Jul 16 14:23:40 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!delphi!rmacdonald From: rmacdonald@delphi.com (Raj MacDonald) Newsgroups: comp.sys.m68k Subject: Re: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Jul16.142340.2794@delphi.com> Date: Tue, 16 Jul 1996 14:23:40 GMT References: <1996Jul13.220440.4665@titech.ac.jp> <1996Jul15.005040.5301@demon.co.uk> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1996Jul15.005040.5301@demon.co.uk>, mbrennan@demon.co.uk (Marisol Brennan) writes: > Marcus Hale designed the TWIN-68 board before he disappeared. That's why his initials are on the PCB silkscreen. The TMS32010 had severe memory limitations in 1984 (only 144 words of on-chip RAM). Dual 68000s gave them full 16MB address space. Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns. -- Raj MacDonald | rmacdonald@delphi.com PGP Key fingerprint: 40BC F5F3 E330 1EB5 "Keep the channels open." From fhughes@hanse.de Thu Jul 18 12:21:40 1996 Path: ashpoly!cascade!mxgate!coyoacan!hanse!fhughes From: fhughes@hanse.de (Fiona Hughes) Newsgroups: comp.sys.m68k Subject: Re: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Jul18.122140.6899@hanse.de> Date: Thu, 18 Jul 1996 12:21:40 GMT References: <1996Jul13.220440.4665@titech.ac.jp> <1996Jul15.005040.5301@demon.co.uk> <1996Jul16.142340.2794@delphi.com> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: Netscape 1.1N Lines: 12 In article <1996Jul16.142340.2794@delphi.com>, rmacdonald@delphi.com (Raj MacDonald) writes: > The TMS32010 had severe memory limitations in 1984 (only 144 words of on-chip RAM). Dual 68000s gave them full 16MB address space. > Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns. Looks like a prototype telecommunications board for military secure voice, not an audio music product. If you are posting from AOL, please read RFC 1036 before posting again. -- Fiona Hughes *PLONK* filter active for trolls. Pentium 90 (OS/2 Warp) - NetBSD 1.0 From mgarcia@ox.ac.uk Sat Jul 20 06:06:40 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!ox!mgarcia From: mgarcia@ox.ac.uk (Marta García) Newsgroups: comp.sys.m68k Subject: Re: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Jul20.060640.5388@ox.ac.uk> Date: Sat, 20 Jul 1996 06:06:40 GMT References: <1996Jul13.220440.4665@titech.ac.jp> <1996Jul15.005040.5301@demon.co.uk> <1996Jul16.142340.2794@delphi.com> <1996Jul18.122140.6899@hanse.de> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1996Jul18.122140.6899@hanse.de>, fhughes@hanse.de (Fiona Hughes) writes: > Looks like a prototype telecommunications board for military secure voice, not an audio music product. 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! -- Marta García Tape trading list upon request. SASE required for international mail.