From jgarcia@pacbell.net Sat Apr 06 23:52:05 1996 Path: ashpoly!cascade!mxgate!coyoacan!pacbell!jgarcia From: jgarcia@pacbell.net (Jen García) Newsgroups: comp.sys.m68k Subject: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Apr06.235205.9947@pacbell.net> Date: Sat, 06 Apr 1996 23:52:05 GMT Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Managed to dump the 27256 EPROMs from the TWIN-68 Rev C board recovered from Ashford Poly. The board features two 68000 CPUs clocked at 12 MHz sharing a dual-ported 128KB static RAM bank. Disassembling ROM #0 reveals an initialization routine that checks for a hardware dongle marked 'ORION-ENC-84'. Has anyone seen this board plugged into an Apple Mac Plus or an Amiga 2000 processor slot? -- Jen García "Do not worship the copy." Amiga 1200 (Blizzard 030/50) / Linux 1.2.13 From ookonkwo@pacbell.net Mon Apr 08 15:04:05 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!pacbell!ookonkwo From: ookonkwo@pacbell.net (Olga Okonkwo) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Apr08.150405.4536@pacbell.net> Date: Mon, 08 Apr 1996 15:04:05 GMT References: <1996Apr06.235205.9947@pacbell.net> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1996Apr06.235205.9947@pacbell.net>, jgarcia@pacbell.net (Jen García) 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? -- Olga Okonkwo -- Pacific Bell Internet Services "Hold for relay."