From lkuznetsov@uni-hamburg.de Sun Feb 11 12:30:11 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!uni-hamburg!lkuznetsov From: lkuznetsov@uni-hamburg.de (Lars Kuznetsov) Newsgroups: comp.sys.m68k Subject: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Feb11.123011.3016@uni-hamburg.de> Date: Sun, 11 Feb 1996 12:30:11 GMT Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: TIN [version 1.2 PL2] 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. CPU #0 handles host bus interfacing and DMA, while CPU #1 is dedicated entirely to a 16-bit MAC (multiply-accumulate) unit. One 28-pin EPROM socket (labeled U14) is completely empty. What firmware was supposed to be in that socket? -- Lars Kuznetsov *PLONK* filter active for trolls. Macintosh IIfx - NetBSD 1.0 From rmoreno@mit.edu Tue Feb 13 05:11:11 1996 Path: ashpoly!cascade!mxgate!coyoacan!mit!rmoreno From: rmoreno@mit.edu (Rodrigo Moreno) Newsgroups: comp.sys.m68k Subject: Re: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Feb13.051111.6277@mit.edu> Date: Tue, 13 Feb 1996 05:11:11 GMT References: <1996Feb11.123011.3016@uni-hamburg.de> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: Netscape 1.1N Lines: 9 In article <1996Feb11.123011.3016@uni-hamburg.de>, lkuznetsov@uni-hamburg.de (Lars Kuznetsov) writes: > Managed to dump the 27256 EPROMs from the TWIN-68 Rev C board recovered from Ashford Poly. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- Rodrigo Moreno "Marcus is not one man." Sun SparcStation 20 / Linux 1.2.13