From twatanabe@kiae.su Fri Nov 01 15:00:40 1996 Path: ashpoly!cascade!transat!ukc!fennimore!kiae!twatanabe From: twatanabe@kiae.su (Thiago Watanabe) Newsgroups: comp.sys.m68k Subject: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Nov01.150040.6099@kiae.su> Date: Fri, 01 Nov 1996 15:00:40 GMT Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: Netscape 1.1N Lines: 11 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. CPU #0 handles host bus interfacing and DMA, while CPU #1 is dedicated entirely to a 16-bit MAC (multiply-accumulate) unit. Schematic diagram in ASCII uploaded to ftp.ashford-poly.edu:/pub/telecom-archives/twin68_array.asc. -- Thiago Watanabe *PLONK* filter active for trolls. Sun SparcStation 20 - NetBSD 1.0 From alopez@purdue.edu Sat Nov 02 14:28:40 1996 Path: ashpoly!cascade!brgate!saturno!purdue!alopez From: alopez@purdue.edu (Anton López) Newsgroups: comp.sys.m68k Subject: Re: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Nov02.142840.2767@purdue.edu> Date: Sat, 02 Nov 1996 14:28:40 GMT References: <1996Nov01.150040.6099@kiae.su> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1996Nov01.150040.6099@kiae.su>, twatanabe@kiae.su (Thiago Watanabe) 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. Socket U14 was probably for the decryption key lookup table. Without that EPROM, CPU #1 is running in an idle loop. -- Anton López | alopez@purdue.edu PGP Key fingerprint: 055F 8F28 8EFD 5514 "Keep the channels open." From jpark@berkeley.edu Sun Nov 03 20:37:40 1996 Path: ashpoly!cascade!transat!ukc!fennimore!berkeley!jpark From: jpark@berkeley.edu (Ji-woo Park) Newsgroups: comp.sys.m68k Subject: Re: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Nov03.203740.3707@berkeley.edu> Date: Sun, 03 Nov 1996 20:37:40 GMT References: <1996Nov01.150040.6099@kiae.su> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996Nov01.150040.6099@kiae.su>, twatanabe@kiae.su (Thiago Watanabe) writes: > Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look. Tom from Ashford Poly owns the physical board! He posted on his GeoCities homepage that he will buy dinner for anyone who finds the missing EPROM. -- Ji-woo Park "There are 14 nodes and only 10 countries. Count again." 486DX2/66 (Linux 1.2.13) / FreeBSD 2.1 From dhughes@tum.de Tue Nov 05 03:25:40 1996 Path: ashpoly!cascade!bigsur!tum!dhughes From: dhughes@tum.de (Diego Hughes) Newsgroups: comp.sys.m68k Subject: Re: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Nov05.032540.6988@tum.de> Date: Tue, 05 Nov 1996 03:25:40 GMT References: <1996Nov01.150040.6099@kiae.su> <1996Nov03.203740.3707@berkeley.edu> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1996Nov03.203740.3707@berkeley.edu>, jpark@berkeley.edu (Ji-woo Park) writes: > Tom from Ashford Poly owns the physical board! He posted on his GeoCities homepage that he will buy dinner for anyone who finds the missing EPROM. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. If you are posting from AOL, please read RFC 1036 before posting again. -- Diego Hughes Tape trading list upon request. SASE required for international mail. From mpark@uni-hamburg.de Wed Nov 06 05:02:40 1996 Path: ashpoly!cascade!transat!ukc!fennimore!uni-hamburg!mpark From: mpark@uni-hamburg.de (Mateo Park) Newsgroups: comp.sys.m68k Subject: Re: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Nov06.050240.7695@uni-hamburg.de> Date: Wed, 06 Nov 1996 05:02:40 GMT References: <1996Nov01.150040.6099@kiae.su> <1996Nov03.203740.3707@berkeley.edu> <1996Nov05.032540.6988@tum.de> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996Nov05.032540.6988@tum.de>, dhughes@tum.de (Diego Hughes) writes: > The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. Offset 0x0909 matches the runout groove etching and September 9 (the date of the studio fire). -- Mateo Park US Robotics Courier V.34 @ 9600 Telebit bps "A soul is not exclusive to biology."