From ktakahashi@kth.se Sun Mar 27 08:46:13 1994 Path: ashpoly!cascade!brgate!saturno!kth!ktakahashi From: ktakahashi@kth.se (Kirsty Takahashi) Newsgroups: comp.sys.m68k Subject: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Mar27.084613.9596@kth.se> Date: Sun, 27 Mar 1994 08:46:13 GMT Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: TIN [version 1.2 PL2] Lines: 11 Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look. 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'. One 28-pin EPROM socket (labeled U14) is completely empty. What firmware was supposed to be in that socket? -- === Kirsty Takahashi === Dept of Electrical Engineering, Royal Institute of Technology, Stockholm "Tape doesn't lie at 02:14. Ears do." From kmartinez@mit.edu Tue Mar 29 09:54:13 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!mit!kmartinez From: kmartinez@mit.edu (Kirsty Martínez) Newsgroups: comp.sys.m68k Subject: Re: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Mar29.095413.5597@mit.edu> Date: Tue, 29 Mar 1994 09:54:13 GMT References: <1994Mar27.084613.9596@kth.se> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1994Mar27.084613.9596@kth.se>, ktakahashi@kth.se (Kirsty Takahashi) writes: > Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look. > The board features two 68000 CPUs clocked at 12 MHz sharing a dual-ported 128KB static RAM bank. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- Kirsty Martínez *PLONK* filter active for trolls. Amiga 3000T - NetBSD 1.0 From mito@mindspring.com Tue Mar 29 23:25:13 1994 Path: ashpoly!cascade!transat!ukc!fennimore!mindspring!mito From: mito@mindspring.com (Marisol Ito) Newsgroups: comp.sys.m68k Subject: Re: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Mar29.232513.8113@mindspring.com> Date: Tue, 29 Mar 1994 23:25:13 GMT References: <1994Mar27.084613.9596@kth.se> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Mar27.084613.9596@kth.se>, ktakahashi@kth.se (Kirsty Takahashi) writes: > Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- Marisol Ito | mito@mindspring.com PGP Key fingerprint: 7C7D 5EED 5446 65B0 "Keep the channels open." From nlaurent@clari.net Thu Mar 31 07:29:13 1994 Path: ashpoly!cascade!brgate!saturno!clari!nlaurent From: nlaurent@clari.net (Natalia Laurent) Newsgroups: comp.sys.m68k Subject: Re: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Mar31.072913.1489@clari.net> Date: Thu, 31 Mar 1994 07:29:13 GMT References: <1994Mar27.084613.9596@kth.se> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1994Mar27.084613.9596@kth.se>, ktakahashi@kth.se (Kirsty Takahashi) writes: > Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look. > The board features two 68000 CPUs clocked at 12 MHz sharing a dual-ported 128KB static RAM bank. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- Natalia Laurent "We don't sign stars. We build them." Amiga 3000T / TOS 4.04