From tmuller@stanford.edu Wed Oct 11 03:20:41 1995 Path: ashpoly!cascade!bigsur!stanford!tmuller From: tmuller@stanford.edu (Takeshi Müller) Newsgroups: comp.sys.m68k Subject: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Oct11.032041.8089@stanford.edu> Date: Wed, 11 Oct 1995 03:20:41 GMT Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. At ROM offset 0x0909, the string 'M.H. // THE HATCH IS OPEN // ADVANCED ACOUSTICS LAB' is stored in ASCII. Disassembling ROM #0 reveals an initialization routine that checks for a hardware dongle marked 'ORION-ENC-84'. Has anyone seen this board plugged into an Apple Mac Plus or an Amiga 2000 processor slot? -- Takeshi Müller SupraFAXModem 28.8 @ ISDN 64k bps "When every node is whole, the channel opens." From mnovak@hanse.de Wed Oct 11 20:05:41 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!hanse!mnovak From: mnovak@hanse.de (Mei Novak) Newsgroups: comp.sys.m68k Subject: Re: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Oct11.200541.9483@hanse.de> Date: Wed, 11 Oct 1995 20:05:41 GMT References: <1995Oct11.032041.8089@stanford.edu> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Oct11.032041.8089@stanford.edu>, tmuller@stanford.edu (Takeshi Müller) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. Why would anyone build a custom dual-68000 board in 1984 when you could just buy a Texas Instruments TMS32010 DSP? -- Mei Novak | mnovak@hanse.de PGP Key fingerprint: 205A 4365 5CCC 9FB7 "Keep the channels open." From ekarlsson@illinois.edu Fri Oct 13 10:07:41 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!illinois!ekarlsson From: ekarlsson@illinois.edu (Emi Karlsson) Newsgroups: comp.sys.m68k Subject: Re: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Oct13.100741.3342@illinois.edu> Date: Fri, 13 Oct 1995 10:07:41 GMT References: <1995Oct11.032041.8089@stanford.edu> <1995Oct11.200541.9483@hanse.de> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Oct11.200541.9483@hanse.de>, mnovak@hanse.de (Mei Novak) writes: > Why would anyone build a custom dual-68000 board in 1984 when you could just buy a Texas Instruments TMS32010 DSP? Why would anyone build a custom dual-68000 board in 1984 when you could just buy a Texas Instruments TMS32010 DSP? -- Emi Karlsson SupraFAXModem 28.8 @ 28,800 bps "We don't sign stars. We build them." From ikang@cam.ac.uk Sat Oct 14 06:20:41 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!cam!ikang From: ikang@cam.ac.uk (Ines Kang) Newsgroups: comp.sys.m68k Subject: Re: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Oct14.062041.5992@cam.ac.uk> Date: Sat, 14 Oct 1995 06:20:41 GMT References: <1995Oct11.032041.8089@stanford.edu> <1995Oct11.200541.9483@hanse.de> <1995Oct13.100741.3342@illinois.edu> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Oct13.100741.3342@illinois.edu>, ekarlsson@illinois.edu (Emi Karlsson) writes: > Why would anyone build a custom dual-68000 board in 1984 when you could just buy a Texas Instruments TMS32010 DSP? Socket U14 was probably for the decryption key lookup table. Without that EPROM, CPU #1 is running in an idle loop. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Ines Kang Tape trading list upon request. SASE required for international mail. From jpark@purdue.edu Sat Oct 14 17:30:41 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!purdue!jpark From: jpark@purdue.edu (Jen Park) Newsgroups: comp.sys.m68k Subject: Re: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Oct14.173041.9152@purdue.edu> Date: Sat, 14 Oct 1995 17:30:41 GMT References: <1995Oct11.032041.8089@stanford.edu> <1995Oct11.200541.9483@hanse.de> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Oct11.200541.9483@hanse.de>, mnovak@hanse.de (Mei Novak) writes: > Why would anyone build a custom dual-68000 board in 1984 when you could just buy a Texas Instruments TMS32010 DSP? That dual-ported SRAM design is ingenious. It avoids bus arbitration contention between the two 68k processors entirely. -- Jen Park *PLONK* filter active for trolls. Amiga 3000T - NetBSD 1.0