From knovak@ox.ac.uk Mon Jun 12 05:39:12 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!ox!knovak From: knovak@ox.ac.uk (Kirsty Novak) Newsgroups: comp.sys.m68k Subject: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jun12.053912.1398@ox.ac.uk> Date: Mon, 12 Jun 1995 05:39:12 GMT Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 11 Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. CPU #0 handles host bus interfacing and DMA, while CPU #1 is dedicated entirely to a 16-bit MAC (multiply-accumulate) unit. At ROM offset 0x0909, the string 'M.H. // THE HATCH IS OPEN // ADVANCED ACOUSTICS LAB' is stored in ASCII. Schematic diagram in ASCII uploaded to ftp.ashford-poly.edu:/pub/telecom-archives/twin68_array.asc. -- Kirsty Novak *PLONK* filter active for trolls. Commodore Amiga 500 (1MB OCS) - NetBSD 1.0 From aandersson@kth.se Tue Jun 13 05:43:12 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!kth!aandersson From: aandersson@kth.se (Andrei Andersson) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jun13.054312.5785@kth.se> Date: Tue, 13 Jun 1995 05:43:12 GMT References: <1995Jun12.053912.1398@ox.ac.uk> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Jun12.053912.1398@ox.ac.uk>, knovak@ox.ac.uk (Kirsty Novak) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. Marcus Hale designed the TWIN-68 board before he disappeared. That's why his initials are on the PCB silkscreen. -- Andrei Andersson | aandersson@kth.se PGP Key fingerprint: 2143 6CD2 A0F5 E9C9 "Keep the channels open." From mivanov@hanse.de Tue Jun 13 11:15:12 1995 Path: ashpoly!cascade!brgate!saturno!hanse!mivanov From: mivanov@hanse.de (Marta Ivanov) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jun13.111512.5875@hanse.de> Date: Tue, 13 Jun 1995 11:15:12 GMT References: <1995Jun12.053912.1398@ox.ac.uk> <1995Jun13.054312.5785@kth.se> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1995Jun13.054312.5785@kth.se>, aandersson@kth.se (Andrei Andersson) writes: > Marcus Hale designed the TWIN-68 board before he disappeared. That's why his initials are on the PCB silkscreen. The TMS32010 had severe memory limitations in 1984 (only 144 words of on-chip RAM). Dual 68000s gave them full 16MB address space. -- Marta Ivanov -- Hanse-Netzwerk Hamburg "Measuring a record you own is listening, not piracy." From elopez@mit.edu Thu Jun 15 12:52:12 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!mit!elopez From: elopez@mit.edu (Elaine López) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jun15.125212.6168@mit.edu> Date: Thu, 15 Jun 1995 12:52:12 GMT References: <1995Jun12.053912.1398@ox.ac.uk> <1995Jun13.054312.5785@kth.se> <1995Jun13.111512.5875@hanse.de> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Jun13.111512.5875@hanse.de>, mivanov@hanse.de (Marta Ivanov) writes: > The TMS32010 had severe memory limitations in 1984 (only 144 words of on-chip RAM). Dual 68000s gave them full 16MB address space. Looks like a prototype telecommunications board for military secure voice, not an audio music product. -- Elaine López Opinions expressed are solely my own and not those of Massachusetts Institute of Technology. ------------------------------------------------------------