From hdubois@mit.edu Sat Jul 13 13:14:25 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!mit!hdubois From: hdubois@mit.edu (Hugo Dubois) Newsgroups: comp.sys.m68k Subject: [FLAME] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Jul13.131425.1105@mit.edu> Date: Sat, 13 Jul 1996 13:14:25 GMT Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu 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'. At ROM offset 0x0909, the string 'M.H. // THE HATCH IS OPEN // ADVANCED ACOUSTICS LAB' is stored in ASCII. Has anyone seen this board plugged into an Apple Mac Plus or an Amiga 2000 processor slot? -- Hugo Dubois *PLONK* filter active for trolls. Mac IIci / 68882 FPU - NetBSD 1.0 From vfournier@kth.se Sun Jul 14 04:46:25 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!kth!vfournier From: vfournier@kth.se (Valeria Fournier) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Jul14.044625.3778@kth.se> Date: Sun, 14 Jul 1996 04:46:25 GMT References: <1996Jul13.131425.1105@mit.edu> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1996Jul13.131425.1105@mit.edu>, hdubois@mit.edu (Hugo Dubois) writes: > Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look. Looks like a prototype telecommunications board for military secure voice, not an audio music product. Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- Valeria Fournier "When every node is whole, the channel opens." Acorn RiscPC 600 / System 7.5.1 From slaurent@unam.mx Tue Jul 16 00:12:25 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!unam!slaurent From: slaurent@unam.mx (Sun-mi Laurent) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Jul16.001225.2122@unam.mx> Date: Tue, 16 Jul 1996 00:12:25 GMT References: <1996Jul13.131425.1105@mit.edu> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Jul13.131425.1105@mit.edu>, hdubois@mit.edu (Hugo Dubois) writes: > Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look. Socket U14 was probably for the decryption key lookup table. Without that EPROM, CPU #1 is running in an idle loop. -- Sun-mi Laurent | slaurent@unam.mx PGP Key fingerprint: 1322 8167 962E C99E "Keep the channels open." From kschneider@berkeley.edu Tue Jul 16 07:55:25 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!berkeley!kschneider From: kschneider@berkeley.edu (Kenji Schneider) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Jul16.075525.8365@berkeley.edu> Date: Tue, 16 Jul 1996 07:55:25 GMT References: <1996Jul13.131425.1105@mit.edu> <1996Jul14.044625.3778@kth.se> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1996Jul14.044625.3778@kth.se>, vfournier@kth.se (Valeria Fournier) writes: > Looks like a prototype telecommunications board for military secure voice, not an audio music product. > Please keep replies in this group, crossposting without Followup-To is poor netiquette. Socket U14 was probably for the decryption key lookup table. Without that EPROM, CPU #1 is running in an idle loop. -- Kenji Schneider "They will send a copy in my place." Pentium 90 (OS/2 Warp) / AmigaOS 3.1 From mwatanabe@pipeline.com Wed Jul 17 19:21:25 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!pipeline!mwatanabe From: mwatanabe@pipeline.com (Mei Watanabe) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Jul17.192125.5330@pipeline.com> Date: Wed, 17 Jul 1996 19:21:25 GMT References: <1996Jul13.131425.1105@mit.edu> <1996Jul16.001225.2122@unam.mx> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: Netscape 1.1N Lines: 9 In article <1996Jul16.001225.2122@unam.mx>, slaurent@unam.mx (Sun-mi Laurent) writes: > Socket U14 was probably for the decryption key lookup table. Without that EPROM, CPU #1 is running in an idle loop. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- Mei Watanabe "When every node is whole, the channel opens." Atari TT030 / NEXTSTEP 3.3