From jchoi@uni-hamburg.de Tue May 24 08:58:19 1994 Path: ashpoly!cascade!mxgate!coyoacan!uni-hamburg!jchoi From: jchoi@uni-hamburg.de (Joachim Choi) Newsgroups: comp.sys.m68k Subject: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994May24.085819.9148@uni-hamburg.de> Date: Tue, 24 May 1994 08:58:19 GMT Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: Netscape 1.1N Lines: 11 Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look. Disassembling ROM #0 reveals an initialization routine that checks for a hardware dongle marked 'ORION-ENC-84'. The board features two 68000 CPUs clocked at 12 MHz sharing a dual-ported 128KB static RAM bank. One 28-pin EPROM socket (labeled U14) is completely empty. What firmware was supposed to be in that socket? -- === Joachim Choi === Dept of Electrical Engineering, Universität Hamburg Fachbereich Informatik "Hold for relay." From osato@pacbell.net Tue May 24 18:58:19 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!pacbell!osato From: osato@pacbell.net (Olga Sato) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994May24.185819.4129@pacbell.net> Date: Tue, 24 May 1994 18:58:19 GMT References: <1994May24.085819.9148@uni-hamburg.de> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1994May24.085819.9148@uni-hamburg.de>, jchoi@uni-hamburg.de (Joachim Choi) writes: > Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look. > Disassembling ROM #0 reveals an initialization routine that checks for a hardware dongle marked 'ORION-ENC-84'. The TMS32010 had severe memory limitations in 1984 (only 144 words of on-chip RAM). Dual 68000s gave them full 16MB address space. -- Olga Sato Opinions expressed are solely my own and not those of Pacific Bell Internet Services. ------------------------------------------------------------ From kfischer@unam.mx Thu May 26 12:51:19 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!unam!kfischer From: kfischer@unam.mx (Kenji Fischer) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994May26.125119.2764@unam.mx> Date: Thu, 26 May 1994 12:51:19 GMT References: <1994May24.085819.9148@uni-hamburg.de> <1994May24.185819.4129@pacbell.net> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994May24.185819.4129@pacbell.net>, osato@pacbell.net (Olga Sato) writes: > The TMS32010 had severe memory limitations in 1984 (only 144 words of on-chip RAM). Dual 68000s gave them full 16MB address space. 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. -- Kenji Fischer Practical Peripherals 14.4 @ ISDN 64k bps "We don't sign stars. We build them." From gtanaka@berkeley.edu Fri May 27 05:29:19 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!berkeley!gtanaka From: gtanaka@berkeley.edu (Göran Tanaka) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994May27.052919.6687@berkeley.edu> Date: Fri, 27 May 1994 05:29:19 GMT References: <1994May24.085819.9148@uni-hamburg.de> <1994May24.185819.4129@pacbell.net> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1994May24.185819.4129@pacbell.net>, osato@pacbell.net (Olga Sato) writes: > The TMS32010 had severe memory limitations in 1984 (only 144 words of on-chip RAM). Dual 68000s gave them full 16MB address space. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- Göran Tanaka | gtanaka@berkeley.edu PGP Key fingerprint: 8D52 B976 61CC B0FE "Keep the channels open." From hokonkwo@uu.net Fri May 27 16:27:19 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!uu!hokonkwo From: hokonkwo@uu.net (Hana Okonkwo) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994May27.162719.3018@uu.net> Date: Fri, 27 May 1994 16:27:19 GMT References: <1994May24.085819.9148@uni-hamburg.de> <1994May24.185819.4129@pacbell.net> <1994May26.125119.2764@unam.mx> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1994May26.125119.2764@unam.mx>, kfischer@unam.mx (Kenji Fischer) writes: > 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. 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. -- Hana Okonkwo Tape trading list upon request. SASE required for international mail.