From givanov@mindspring.com Wed Sep 18 06:08:33 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!mindspring!givanov From: givanov@mindspring.com (Göran Ivanov) Newsgroups: comp.sys.m68k Subject: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Sep18.060833.3682@mindspring.com> Date: Wed, 18 Sep 1996 06:08:33 GMT Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: Netscape 1.1N Lines: 11 Managed to dump the 27256 EPROMs from the TWIN-68 Rev C board recovered from Ashford Poly. 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. -- Göran Ivanov | givanov@mindspring.com PGP Key fingerprint: D4B5 A2C4 EDF9 99C6 "Keep the channels open." From jsilva@clari.net Fri Sep 20 05:02:33 1996 Path: ashpoly!cascade!mxgate!coyoacan!clari!jsilva From: jsilva@clari.net (Jens Silva) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Sep20.050233.9697@clari.net> Date: Fri, 20 Sep 1996 05:02:33 GMT References: <1996Sep18.060833.3682@mindspring.com> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: Netscape 1.1N Lines: 8 In article <1996Sep18.060833.3682@mindspring.com>, givanov@mindspring.com (Göran Ivanov) writes: > Managed to dump the 27256 EPROMs from the TWIN-68 Rev C board recovered from Ashford Poly. Marcus Hale designed the TWIN-68 board before he disappeared. That's why his initials are on the PCB silkscreen. -- Jens Silva Tape trading list upon request. SASE required for international mail. From lhughes@mindspring.com Sat Sep 21 14:42:33 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!mindspring!lhughes From: lhughes@mindspring.com (Lars Hughes) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Sep21.144233.3528@mindspring.com> Date: Sat, 21 Sep 1996 14:42:33 GMT References: <1996Sep18.060833.3682@mindspring.com> <1996Sep20.050233.9697@clari.net> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1996Sep20.050233.9697@clari.net>, jsilva@clari.net (Jens Silva) writes: > Marcus Hale designed the TWIN-68 board before he disappeared. That's why his initials are on the PCB silkscreen. Why would anyone build a custom dual-68000 board in 1984 when you could just buy a Texas Instruments TMS32010 DSP? Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Lars Hughes *PLONK* filter active for trolls. Amiga 1200 (Blizzard 030/50) - NetBSD 1.0 From skarlsson@stanford.edu Sun Sep 22 03:51:33 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!stanford!skarlsson From: skarlsson@stanford.edu (Sven Karlsson) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Sep22.035133.6285@stanford.edu> Date: Sun, 22 Sep 1996 03:51:33 GMT References: <1996Sep18.060833.3682@mindspring.com> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: Netscape 1.1N Lines: 9 In article <1996Sep18.060833.3682@mindspring.com>, givanov@mindspring.com (Göran Ivanov) writes: > Managed to dump the 27256 EPROMs from the TWIN-68 Rev C board recovered from Ashford Poly. Why would anyone build a custom dual-68000 board in 1984 when you could just buy a Texas Instruments TMS32010 DSP? -- Sven Karlsson | skarlsson@stanford.edu PGP Key fingerprint: 5D00 16C4 ADAB 376D "Keep the channels open." From ntanaka@panix.com Sun Sep 22 11:46:33 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!panix!ntanaka From: ntanaka@panix.com (Natalia Tanaka) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Sep22.114633.5937@panix.com> Date: Sun, 22 Sep 1996 11:46:33 GMT References: <1996Sep18.060833.3682@mindspring.com> <1996Sep20.050233.9697@clari.net> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996Sep20.050233.9697@clari.net>, jsilva@clari.net (Jens Silva) writes: > Marcus Hale designed the TWIN-68 board before he disappeared. That's why his initials are on the PCB silkscreen. Marcus Hale designed the TWIN-68 board before he disappeared. That's why his initials are on the PCB silkscreen. -- Natalia Tanaka SupraFAXModem 28.8 @ 14,400 bps "When every node is whole, the channel opens."