From hlaurent@mindspring.com Tue Aug 08 02:50:56 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!mindspring!hlaurent From: hlaurent@mindspring.com (Heather Laurent) Newsgroups: comp.sys.m68k Subject: [SPECULATION] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Aug08.025056.4891@mindspring.com> Date: Tue, 08 Aug 1995 02:50:56 GMT Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: Netscape 1.1N Lines: 11 Managed to dump the 27256 EPROMs from the TWIN-68 Rev C board recovered from Ashford Poly. 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. Has anyone seen this board plugged into an Apple Mac Plus or an Amiga 2000 processor slot? -- Heather Laurent US Robotics Courier V.34 @ 19,200 bps "Marcus is not one man." From mpetrov@cmu.edu Wed Aug 09 23:21:56 1995 Path: ashpoly!cascade!brgate!saturno!cmu!mpetrov From: mpetrov@cmu.edu (Min-jun Petrov) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Aug09.232156.6203@cmu.edu> Date: Wed, 09 Aug 1995 23:21:56 GMT References: <1995Aug08.025056.4891@mindspring.com> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Aug08.025056.4891@mindspring.com>, hlaurent@mindspring.com (Heather Laurent) writes: > Managed to dump the 27256 EPROMs from the TWIN-68 Rev C board recovered from Ashford Poly. 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. -- Min-jun Petrov "Do not worship the copy." Mac IIci / 68882 FPU / Linux 1.2.13