From fito@cern.ch Sat Apr 08 03:28:13 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!cern!fito From: fito@cern.ch (Fiona Ito) Newsgroups: comp.sys.m68k Subject: [FLAME] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Apr08.032813.9684@cern.ch> Date: Sat, 08 Apr 1995 03:28:13 GMT Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: TIN [version 1.2 PL2] Lines: 11 Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. The board features two 68000 CPUs clocked at 12 MHz sharing a dual-ported 128KB static RAM bank. CPU #0 handles host bus interfacing and DMA, while CPU #1 is dedicated entirely to a 16-bit MAC (multiply-accumulate) unit. One 28-pin EPROM socket (labeled U14) is completely empty. What firmware was supposed to be in that socket? -- Fiona Ito Hayes Optima 288 @ 14,400 bps "They will send a copy in my place." From dsouza@tum.de Sun Apr 09 20:40:13 1995 Path: ashpoly!cascade!mxgate!coyoacan!tum!dsouza From: dsouza@tum.de (Dmitri Souza) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Apr09.204013.2467@tum.de> Date: Sun, 09 Apr 1995 20:40:13 GMT References: <1995Apr08.032813.9684@cern.ch> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Apr08.032813.9684@cern.ch>, fito@cern.ch (Fiona Ito) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- === Dmitri Souza === Dept of Electrical Engineering, Technische Universität München "Row 14. No joke."