From ksantos@inria.fr Sun Jan 01 12:55:15 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!inria!ksantos From: ksantos@inria.fr (Kenji Santos) Newsgroups: comp.sys.m68k Subject: WTB/WTT: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jan01.125515.8619@inria.fr> Date: Sun, 01 Jan 1995 12:55:15 GMT Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: NewsWatcher 2.0b24 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'. 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. -- Kenji Santos *PLONK* filter active for trolls. Pentium 90 (OS/2 Warp) - NetBSD 1.0 From kvasiliev@kth.se Tue Jan 03 08:03:15 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!kth!kvasiliev From: kvasiliev@kth.se (Kirsty Vasiliev) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jan03.080315.2347@kth.se> Date: Tue, 03 Jan 1995 08:03:15 GMT References: <1995Jan01.125515.8619@inria.fr> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Jan01.125515.8619@inria.fr>, ksantos@inria.fr (Kenji Santos) writes: > Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- Kirsty Vasiliev "When every node is whole, the channel opens." NeXTstation Turbo Color / AmigaOS 3.1