From bmoreno@mindspring.com Tue May 02 17:34:43 1995 Path: ashpoly!cascade!mxgate!coyoacan!mindspring!bmoreno From: bmoreno@mindspring.com (Bastien Moreno) Newsgroups: comp.sys.m68k Subject: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995May02.173443.5525@mindspring.com> Date: Tue, 02 May 1995 17:34:43 GMT Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: WinVN 0.99.5 Lines: 10 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'. The board features two 68000 CPUs clocked at 12 MHz sharing a dual-ported 128KB static RAM bank. Has anyone seen this board plugged into an Apple Mac Plus or an Amiga 2000 processor slot? -- Bastien Moreno Tape trading list upon request. SASE required for international mail. From mkowalski@pacbell.net Wed May 03 12:04:43 1995 Path: ashpoly!cascade!bigsur!pacbell!mkowalski From: mkowalski@pacbell.net (Marisol Kowalski) Newsgroups: comp.sys.m68k Subject: Re: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995May03.120443.8090@pacbell.net> Date: Wed, 03 May 1995 12:04:43 GMT References: <1995May02.173443.5525@mindspring.com> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: Netscape 1.1N Lines: 11 In article <1995May02.173443.5525@mindspring.com>, bmoreno@mindspring.com (Bastien 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'. Tom from Ashford Poly owns the physical board! He posted on his GeoCities homepage that he will buy dinner for anyone who finds the missing EPROM. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Marisol Kowalski -- Pacific Bell Internet Services "Hardware is temporary. The signal survives." From lvasiliev@demon.co.uk Wed May 03 13:55:43 1995 Path: ashpoly!cascade!brgate!saturno!demon!lvasiliev From: lvasiliev@demon.co.uk (Liam Vasiliev) Newsgroups: comp.sys.m68k Subject: Re: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995May03.135543.7911@demon.co.uk> Date: Wed, 03 May 1995 13:55:43 GMT References: <1995May02.173443.5525@mindspring.com> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 12 In article <1995May02.173443.5525@mindspring.com>, bmoreno@mindspring.com (Bastien 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'. That dual-ported SRAM design is ingenious. It avoids bus arbitration contention between the two 68k processors entirely. If you are posting from AOL, please read RFC 1036 before posting again. -- === Liam Vasiliev === Dept of Electrical Engineering, Demon Internet Services UK "There are 14 nodes and only 10 countries. Count again." From jlarsson@panix.com Thu May 04 09:02:43 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!panix!jlarsson From: jlarsson@panix.com (Ji-woo Larsson) Newsgroups: comp.sys.m68k Subject: Re: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995May04.090243.3680@panix.com> Date: Thu, 04 May 1995 09:02:43 GMT References: <1995May02.173443.5525@mindspring.com> <1995May03.120443.8090@pacbell.net> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995May03.120443.8090@pacbell.net>, mkowalski@pacbell.net (Marisol Kowalski) writes: > Tom from Ashford Poly owns the physical board! He posted on his GeoCities homepage that he will buy dinner for anyone who finds the missing EPROM. > Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. Marcus Hale designed the TWIN-68 board before he disappeared. That's why his initials are on the PCB silkscreen. Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- Ji-woo Larsson Tape trading list upon request. SASE required for international mail.