From nhughes@hanse.de Tue Oct 18 15:02:59 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!hanse!nhughes From: nhughes@hanse.de (Nadia Hughes) Newsgroups: comp.sys.m68k Subject: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Oct18.150259.7989@hanse.de> Date: Tue, 18 Oct 1994 15:02:59 GMT Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: Netscape 1.1N Lines: 10 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? -- Nadia Hughes -- Hanse-Netzwerk Hamburg "Tape doesn't lie at 02:14. Ears do." From mweber@purdue.edu Thu Oct 20 04:51:59 1994 Path: ashpoly!cascade!transat!ukc!fennimore!purdue!mweber From: mweber@purdue.edu (Marta Weber) Newsgroups: comp.sys.m68k Subject: Re: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Oct20.045159.7175@purdue.edu> Date: Thu, 20 Oct 1994 04:51:59 GMT References: <1994Oct18.150259.7989@hanse.de> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1994Oct18.150259.7989@hanse.de>, nhughes@hanse.de (Nadia Hughes) writes: > 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. Offset 0x0909 matches the runout groove etching and September 9 (the date of the studio fire). -- Marta Weber Opinions expressed are solely my own and not those of Purdue University Engineering Computer Network. ------------------------------------------------------------ From mcampbell@kth.se Thu Oct 20 13:45:59 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!kth!mcampbell From: mcampbell@kth.se (Mei Campbell) Newsgroups: comp.sys.m68k Subject: Re: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Oct20.134559.4838@kth.se> Date: Thu, 20 Oct 1994 13:45:59 GMT References: <1994Oct18.150259.7989@hanse.de> <1994Oct20.045159.7175@purdue.edu> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Oct20.045159.7175@purdue.edu>, mweber@purdue.edu (Marta Weber) writes: > Offset 0x0909 matches the runout groove etching and September 9 (the date of the studio fire). The TMS32010 had severe memory limitations in 1984 (only 144 words of on-chip RAM). Dual 68000s gave them full 16MB address space. -- Mei Campbell "Row 14. No joke." 486DX2/66 (Linux 1.2.13) / AmigaOS 3.1