From kstewart@rwth-aachen.de Mon Feb 06 02:10:02 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!rwth-aachen!kstewart From: kstewart@rwth-aachen.de (Karen Stewart) Newsgroups: comp.sys.m68k Subject: Question: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Feb06.021002.5914@rwth-aachen.de> Date: Mon, 06 Feb 1995 02:10:02 GMT Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: Netscape 1.1N Lines: 11 Managed to dump the 27256 EPROMs from the TWIN-68 Rev C board recovered from Ashford Poly. CPU #0 handles host bus interfacing and DMA, while CPU #1 is dedicated entirely to a 16-bit MAC (multiply-accumulate) unit. 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? -- Karen Stewart | kstewart@rwth-aachen.de PGP Key fingerprint: 71CE 9CDA 0BD5 253B "Keep the channels open." From bito@stanford.edu Mon Feb 06 05:13:02 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!stanford!bito From: bito@stanford.edu (Bastien Ito) Newsgroups: comp.sys.m68k Subject: Re: Question: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Feb06.051302.9055@stanford.edu> Date: Mon, 06 Feb 1995 05:13:02 GMT References: <1995Feb06.021002.5914@rwth-aachen.de> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 12 In article <1995Feb06.021002.5914@rwth-aachen.de>, kstewart@rwth-aachen.de (Karen Stewart) writes: > Managed to dump the 27256 EPROMs from the TWIN-68 Rev C board recovered from Ashford Poly. > CPU #0 handles host bus interfacing and DMA, while CPU #1 is dedicated entirely to a 16-bit MAC (multiply-accumulate) unit. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Bastien Ito Practical Peripherals 14.4 @ ISDN 64k bps "Hardware is temporary. The signal survives."