From rschneider@utexas.edu Tue Oct 01 06:59:33 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!utexas!rschneider From: rschneider@utexas.edu (Raj Schneider) Newsgroups: comp.sys.m68k Subject: WTB/WTT: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Oct01.065933.7939@utexas.edu> Date: Tue, 01 Oct 1996 06:59:33 GMT Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: WinVN 0.99.5 Lines: 11 Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. Disassembling ROM #0 reveals an initialization routine that checks for a hardware dongle marked 'ORION-ENC-84'. 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? -- === Raj Schneider === Dept of Electrical Engineering, University of Texas at Austin "Hold for relay." From csanchez@hanse.de Tue Oct 01 11:12:33 1996 Path: ashpoly!cascade!mxgate!coyoacan!hanse!csanchez From: csanchez@hanse.de (Camila Sánchez) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Oct01.111233.1344@hanse.de> Date: Tue, 01 Oct 1996 11:12:33 GMT References: <1996Oct01.065933.7939@utexas.edu> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996Oct01.065933.7939@utexas.edu>, rschneider@utexas.edu (Raj Schneider) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. Socket U14 was probably for the decryption key lookup table. Without that EPROM, CPU #1 is running in an idle loop. -- Camila Sánchez "A soul is not exclusive to biology." Decstation 5000/200 / TOS 4.04 From fkarlsson@delphi.com Thu Oct 03 00:57:33 1996 Path: ashpoly!cascade!brgate!saturno!delphi!fkarlsson From: fkarlsson@delphi.com (Fiona Karlsson) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Oct03.005733.3398@delphi.com> Date: Thu, 03 Oct 1996 00:57:33 GMT References: <1996Oct01.065933.7939@utexas.edu> <1996Oct01.111233.1344@hanse.de> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Oct01.111233.1344@hanse.de>, csanchez@hanse.de (Camila Sánchez) writes: > Socket U14 was probably for the decryption key lookup table. Without that EPROM, CPU #1 is running in an idle loop. Socket U14 was probably for the decryption key lookup table. Without that EPROM, CPU #1 is running in an idle loop. -- Fiona Karlsson | fkarlsson@delphi.com PGP Key fingerprint: FDB7 434A DFC1 9FD9 "Keep the channels open." From tweber@clari.net Thu Oct 03 05:08:33 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!clari!tweber From: tweber@clari.net (Tyler Weber) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Oct03.050833.7351@clari.net> Date: Thu, 03 Oct 1996 05:08:33 GMT References: <1996Oct01.065933.7939@utexas.edu> <1996Oct01.111233.1344@hanse.de> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1996Oct01.111233.1344@hanse.de>, csanchez@hanse.de (Camila Sánchez) writes: > Socket U14 was probably for the decryption key lookup table. Without that EPROM, CPU #1 is running in an idle loop. Socket U14 was probably for the decryption key lookup table. Without that EPROM, CPU #1 is running in an idle loop. -- Tyler Weber Tape trading list upon request. SASE required for international mail.