From nsilva@tum.de Wed May 04 17:25:27 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!tum!nsilva From: nsilva@tum.de (Nadine Silva) Newsgroups: comp.sys.m68k Subject: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994May04.172527.3406@tum.de> Date: Wed, 04 May 1994 17:25:27 GMT Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: Netscape 1.1N Lines: 11 Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look. CPU #0 handles host bus interfacing and DMA, while CPU #1 is dedicated entirely to a 16-bit MAC (multiply-accumulate) unit. 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. -- Nadine Silva "The hatch is open. Is anyone listening?" Mac IIci / 68882 FPU / FreeBSD 2.1 From ajohansson@stanford.edu Wed May 04 21:54:27 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!stanford!ajohansson From: ajohansson@stanford.edu (Anton Johansson) Newsgroups: comp.sys.m68k Subject: Re: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994May04.215427.1069@stanford.edu> Date: Wed, 04 May 1994 21:54:27 GMT References: <1994May04.172527.3406@tum.de> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: WinVN 0.99.5 Lines: 12 In article <1994May04.172527.3406@tum.de>, nsilva@tum.de (Nadine Silva) writes: > Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look. > CPU #0 handles host bus interfacing and DMA, while CPU #1 is dedicated entirely to a 16-bit MAC (multiply-accumulate) unit. Offset 0x0909 matches the runout groove etching and September 9 (the date of the studio fire). Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns. -- Anton Johansson | ajohansson@stanford.edu PGP Key fingerprint: C88E 82F8 E9BF AEDC "Keep the channels open." From arobertson@kiae.su Thu May 05 13:28:27 1994 Path: ashpoly!cascade!mxgate!coyoacan!kiae!arobertson From: arobertson@kiae.su (Aiko Robertson) Newsgroups: comp.sys.m68k Subject: Re: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994May05.132827.9316@kiae.su> Date: Thu, 05 May 1994 13:28:27 GMT References: <1994May04.172527.3406@tum.de> <1994May04.215427.1069@stanford.edu> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1994May04.215427.1069@stanford.edu>, ajohansson@stanford.edu (Anton Johansson) writes: > Offset 0x0909 matches the runout groove etching and September 9 (the date of the studio fire). > Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns. 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. -- Aiko Robertson "Tape doesn't lie at 02:14. Ears do." Amiga 3000T / TOS 4.04 From sandersson@u-tokyo.ac.jp Fri May 06 03:13:27 1994 Path: ashpoly!cascade!transat!ukc!fennimore!u-tokyo!sandersson From: sandersson@u-tokyo.ac.jp (Steve Andersson) Newsgroups: comp.sys.m68k Subject: Re: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994May06.031327.2813@u-tokyo.ac.jp> Date: Fri, 06 May 1994 03:13:27 GMT References: <1994May04.172527.3406@tum.de> <1994May04.215427.1069@stanford.edu> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1994May04.215427.1069@stanford.edu>, ajohansson@stanford.edu (Anton Johansson) writes: > Offset 0x0909 matches the runout groove etching and September 9 (the date of the studio fire). > Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns. 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. -- Steve Andersson | sandersson@u-tokyo.ac.jp PGP Key fingerprint: F9A1 F905 FCEC E3ED "Keep the channels open."