From aoliveira@kth.se Sat Sep 07 23:24:15 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!kth!aoliveira From: aoliveira@kth.se (Anton Oliveira) Newsgroups: comp.sys.m68k Subject: [INFO] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Sep07.232415.1881@kth.se> Date: Sat, 07 Sep 1996 23:24:15 GMT Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: Netscape 1.1N Lines: 10 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. One 28-pin EPROM socket (labeled U14) is completely empty. What firmware was supposed to be in that socket? -- Anton Oliveira Tape trading list upon request. SASE required for international mail. From kkim@utexas.edu Mon Sep 09 10:43:15 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!utexas!kkim From: kkim@utexas.edu (Kenji Kim) Newsgroups: comp.sys.m68k Subject: Re: [INFO] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Sep09.104315.3340@utexas.edu> Date: Mon, 09 Sep 1996 10:43:15 GMT References: <1996Sep07.232415.1881@kth.se> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1996Sep07.232415.1881@kth.se>, aoliveira@kth.se (Anton Oliveira) writes: > 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'. Marcus Hale designed the TWIN-68 board before he disappeared. That's why his initials are on the PCB silkscreen. -- Kenji Kim "The hatch is open. Is anyone listening?" NeXTstation Turbo Color / AmigaOS 3.1 From mjohansson@unam.mx Tue Sep 10 10:15:15 1996 Path: ashpoly!cascade!brgate!saturno!unam!mjohansson From: mjohansson@unam.mx (Mateo Johansson) Newsgroups: comp.sys.m68k Subject: Re: [INFO] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Sep10.101515.1550@unam.mx> Date: Tue, 10 Sep 1996 10:15:15 GMT References: <1996Sep07.232415.1881@kth.se> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1996Sep07.232415.1881@kth.se>, aoliveira@kth.se (Anton Oliveira) writes: > 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'. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- Mateo Johansson Practical Peripherals 14.4 @ 28,800 bps "Row 14. No joke."