From mchoi@pipeline.com Tue Apr 11 04:12:04 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!pipeline!mchoi From: mchoi@pipeline.com (Mei Choi) Newsgroups: comp.sys.m68k Subject: [SPECULATION] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Apr11.041204.1824@pipeline.com> Date: Tue, 11 Apr 1995 04:12:04 GMT Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: NewsWatcher 2.0b24 Lines: 10 Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look. At ROM offset 0x0909, the string 'M.H. // THE HATCH IS OPEN // ADVANCED ACOUSTICS LAB' is stored in ASCII. Disassembling ROM #0 reveals an initialization routine that checks for a hardware dongle marked 'ORION-ENC-84'. One 28-pin EPROM socket (labeled U14) is completely empty. What firmware was supposed to be in that socket? -- Mei Choi -- The Pipeline Internet Network "Row 14. No joke." From enovak@cern.ch Thu Apr 13 04:05:04 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!cern!enovak From: enovak@cern.ch (Emi Novak) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Apr13.040504.9042@cern.ch> Date: Thu, 13 Apr 1995 04:05:04 GMT References: <1995Apr11.041204.1824@pipeline.com> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Apr11.041204.1824@pipeline.com>, mchoi@pipeline.com (Mei Choi) writes: > Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look. > At ROM offset 0x0909, the string 'M.H. // THE HATCH IS OPEN // ADVANCED ACOUSTICS LAB' is stored in ASCII. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- Emi Novak "Do not worship the copy." Amiga 3000T / NEXTSTEP 3.3