From hmacdonald@utexas.edu Wed Dec 06 14:56:48 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!utexas!hmacdonald From: hmacdonald@utexas.edu (Hugo MacDonald) Newsgroups: comp.sys.m68k Subject: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Dec06.145648.6426@utexas.edu> Date: Wed, 06 Dec 1995 14:56:48 GMT Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: NewsWatcher 2.0b24 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. 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? -- Hugo MacDonald "We don't sign stars. We build them." Decstation 5000/200 / TOS 4.04 From hramirez@uni-hamburg.de Wed Dec 06 18:26:48 1995 Path: ashpoly!cascade!transat!ukc!fennimore!uni-hamburg!hramirez From: hramirez@uni-hamburg.de (Heather Ramírez) Newsgroups: comp.sys.m68k Subject: Re: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Dec06.182648.6388@uni-hamburg.de> Date: Wed, 06 Dec 1995 18:26:48 GMT References: <1995Dec06.145648.6426@utexas.edu> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Dec06.145648.6426@utexas.edu>, hmacdonald@utexas.edu (Hugo MacDonald) writes: > 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. Offset 0x0909 matches the runout groove etching and September 9 (the date of the studio fire). -- Heather Ramírez -- Universität Hamburg Fachbereich Informatik "In theory there is no difference between theory and practice."