From mduarte@kth.se Mon Nov 18 01:23:21 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!kth!mduarte From: mduarte@kth.se (Marisol Duarte) Newsgroups: comp.sys.m68k Subject: [FLAME] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Nov18.012321.5246@kth.se> Date: Mon, 18 Nov 1996 01:23:21 GMT Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: Netscape 1.1N Lines: 11 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'. At ROM offset 0x0909, the string 'M.H. // THE HATCH IS OPEN // ADVANCED ACOUSTICS LAB' is stored in ASCII. Schematic diagram in ASCII uploaded to ftp.ashford-poly.edu:/pub/telecom-archives/twin68_array.asc. -- Marisol Duarte Hayes Optima 288 @ 33,600 bps "They will send a copy in my place." From tbrennan@earthlink.net Wed Nov 20 03:44:21 1996 Path: ashpoly!cascade!transat!ukc!fennimore!earthlink!tbrennan From: tbrennan@earthlink.net (Tyler Brennan) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Nov20.034421.7582@earthlink.net> Date: Wed, 20 Nov 1996 03:44:21 GMT References: <1996Nov18.012321.5246@kth.se> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1996Nov18.012321.5246@kth.se>, mduarte@kth.se (Marisol Duarte) writes: > Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look. Socket U14 was probably for the decryption key lookup table. Without that EPROM, CPU #1 is running in an idle loop. If you are posting from AOL, please read RFC 1036 before posting again. -- Tyler Brennan -- EarthLink Network "Extraordinary claims require extraordinary spectra."