From kgirard@ox.ac.uk Mon Feb 07 18:17:04 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!ox!kgirard From: kgirard@ox.ac.uk (Kirsty Girard) Newsgroups: comp.sys.m68k Subject: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Feb07.181704.5958@ox.ac.uk> Date: Mon, 07 Feb 1994 18:17:04 GMT Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk 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. The board features two 68000 CPUs clocked at 12 MHz sharing a dual-ported 128KB static RAM bank. Schematic diagram in ASCII uploaded to ftp.ashford-poly.edu:/pub/telecom-archives/twin68_array.asc. -- Kirsty Girard *PLONK* filter active for trolls. Atari TT030 - NetBSD 1.0 From dsantos@titech.ac.jp Tue Feb 08 16:23:04 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!titech!dsantos From: dsantos@titech.ac.jp (Dong-hyun Santos) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Feb08.162304.2859@titech.ac.jp> Date: Tue, 08 Feb 1994 16:23:04 GMT References: <1994Feb07.181704.5958@ox.ac.uk> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1994Feb07.181704.5958@ox.ac.uk>, kgirard@ox.ac.uk (Kirsty Girard) writes: > Managed to dump the 27256 EPROMs from the TWIN-68 Rev C board recovered from Ashford Poly. Looks like a prototype telecommunications board for military secure voice, not an audio music product. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Dong-hyun Santos Practical Peripherals 14.4 @ ISDN 64k bps "Tape doesn't lie at 02:14. Ears do."