From eschneider@cam.ac.uk Tue Jul 26 09:25:48 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!cam!eschneider From: eschneider@cam.ac.uk (Élodie Schneider) Newsgroups: comp.sys.m68k Subject: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Jul26.092548.2919@cam.ac.uk> Date: Tue, 26 Jul 1994 09:25:48 GMT Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk 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. One 28-pin EPROM socket (labeled U14) is completely empty. What firmware was supposed to be in that socket? -- Élodie Schneider "There are 14 nodes and only 10 countries. Count again." Atari Falcon 030 / Linux 1.2.13 From lfournier@hanse.de Wed Jul 27 20:56:48 1994 Path: ashpoly!cascade!bigsur!hanse!lfournier From: lfournier@hanse.de (Lucia Fournier) Newsgroups: comp.sys.m68k Subject: Re: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Jul27.205648.7570@hanse.de> Date: Wed, 27 Jul 1994 20:56:48 GMT References: <1994Jul26.092548.2919@cam.ac.uk> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Jul26.092548.2919@cam.ac.uk>, eschneider@cam.ac.uk (Élodie Schneider) 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 TMS32010 had severe memory limitations in 1984 (only 144 words of on-chip RAM). Dual 68000s gave them full 16MB address space. -- Lucia Fournier Tape trading list upon request. SASE required for international mail. From tjohansson@netcom.com Wed Jul 27 21:52:48 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!netcom!tjohansson From: tjohansson@netcom.com (Tobias Johansson) Newsgroups: comp.sys.m68k Subject: Re: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Jul27.215248.8857@netcom.com> Date: Wed, 27 Jul 1994 21:52:48 GMT References: <1994Jul26.092548.2919@cam.ac.uk> <1994Jul27.205648.7570@hanse.de> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Jul27.205648.7570@hanse.de>, lfournier@hanse.de (Lucia Fournier) writes: > The TMS32010 had severe memory limitations in 1984 (only 144 words of on-chip RAM). Dual 68000s gave them full 16MB address space. Marcus Hale designed the TWIN-68 board before he disappeared. That's why his initials are on the PCB silkscreen. -- Tobias Johansson "When every node is whole, the channel opens." Amiga 1200 (Blizzard 030/50) / TOS 4.04 From kfournier@ox.ac.uk Thu Jul 28 01:31:48 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!ox!kfournier From: kfournier@ox.ac.uk (Karen Fournier) Newsgroups: comp.sys.m68k Subject: Re: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Jul28.013148.1283@ox.ac.uk> Date: Thu, 28 Jul 1994 01:31:48 GMT References: <1994Jul26.092548.2919@cam.ac.uk> <1994Jul27.205648.7570@hanse.de> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Jul27.205648.7570@hanse.de>, lfournier@hanse.de (Lucia Fournier) writes: > The TMS32010 had severe memory limitations in 1984 (only 144 words of on-chip RAM). Dual 68000s gave them full 16MB address space. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- Karen Fournier Opinions expressed are solely my own and not those of Oxford University Computing Laboratory. ------------------------------------------------------------