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From: Michael R. <mro...@fu...> - 2004-06-25 16:43:26
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Hey, I just joined the LinuxDC mailing list and wondered if you guys needed any help doing stuff or if you wanted me to work on anything. Michael Robinson mro...@fu... www.fuzzymuzzle.com |
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From: Mike F. <va...@ge...> - 2004-06-25 23:05:51
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On Friday 25 June 2004 12:42 pm, Michael Robinson wrote: > I just joined the LinuxDC mailing list and wondered if you guys needed > any help doing stuff or if you wanted me to work on anything. http://www.fuzzymuzzle.com/Kiyoshi/Images/p0206n002.jpg anyone know if that connector going into the side of the dreamcast just: (1) destroyed modem with connector port intact (2) 1 25x2 pin head soldered onto the otherside of the connector in (1) (3) a 50 pin scsi cable -mike |
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From: Michael R. <mro...@fu...> - 2004-06-25 23:36:33
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It's a proprietary pinout cable and is connected through a destroyed modem. Basically Kiyoshi tore the PCB off of the modem connector and soldered this proprietary cable to all of the Dreamcast Parallel port pins on the connector. He then ran the cable into a PLL that used programmable logic to convert the Dreamcast parallel port to an IDE bus. Michael Robinson mro...@fu... www.fuzzymuzzle.com Mike Frysinger wrote: >On Friday 25 June 2004 12:42 pm, Michael Robinson wrote: > > >>I just joined the LinuxDC mailing list and wondered if you guys needed >>any help doing stuff or if you wanted me to work on anything. >> >> > >http://www.fuzzymuzzle.com/Kiyoshi/Images/p0206n002.jpg > >anyone know if that connector going into the side of the dreamcast just: >(1) destroyed modem with connector port intact >(2) 1 25x2 pin head soldered onto the otherside of the connector in (1) >(3) a 50 pin scsi cable >-mike > > >------------------------------------------------------- >This SF.Net email sponsored by Black Hat Briefings & Training. >Attend Black Hat Briefings & Training, Las Vegas July 24-29 - >digital self defense, top technical experts, no vendor pitches, >unmatched networking opportunities. Visit www.blackhat.com >_______________________________________________ >Linuxdc-dev mailing list >Lin...@li... >https://lists.sourceforge.net/lists/listinfo/linuxdc-dev > > > > > |
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From: Mike F. <va...@ge...> - 2004-06-26 01:31:50
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On Friday 25 June 2004 07:35 pm, Michael Robinson wrote: > It's a proprietary pinout cable and is connected through a destroyed > modem. Basically Kiyoshi tore the PCB off of the modem connector and > soldered this proprietary cable to all of the Dreamcast Parallel port > pins on the connector. right, this is the part i'm interested in ;) it looks like a small ripped apart 50pin scsi cable and i think that will be what i'll utilize ... ive just never found anything out there detailing the modem destruction/rebirth -mike |
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From: Michael R. <mro...@fu...> - 2004-06-26 02:13:14
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Check out Bitmaster's mirror at my site, he has the IDE schematic there that tells you how to connect your IDE circuit to the Dreamcast: http://www.fuzzymuzzle.com/Bitmaster/Images/dc-ide.pdf Unfortunately many of the parts are no longer manufactured, you'll have to find a substitute. Kiyoshi also has a version of the schematic at his site here: http://www.fuzzymuzzle.com/Kiyoshi/Images/Experimental_ISA_board.pdf You can check out the Dreamcast Parallel Port pinout here: http://www.fuzzymuzzle.com/Bitmaster/Parallel_Port.htm IMHO, I think the project should work together on this to come to a common standard that utilizes currently available components and well document it so people don't have to keep running around trying to figure out how to do it. Michael Robinson mro...@fu... www.fuzzymuzzle.com Mike Frysinger wrote: >On Friday 25 June 2004 07:35 pm, Michael Robinson wrote: > > >>It's a proprietary pinout cable and is connected through a destroyed >>modem. Basically Kiyoshi tore the PCB off of the modem connector and >>soldered this proprietary cable to all of the Dreamcast Parallel port >>pins on the connector. >> >> > >right, this is the part i'm interested in ;) >it looks like a small ripped apart 50pin scsi cable and i think that will be >what i'll utilize ... ive just never found anything out there detailing the >modem destruction/rebirth >-mike > > >------------------------------------------------------- >This SF.Net email sponsored by Black Hat Briefings & Training. >Attend Black Hat Briefings & Training, Las Vegas July 24-29 - >digital self defense, top technical experts, no vendor pitches, >unmatched networking opportunities. Visit www.blackhat.com >_______________________________________________ >Linuxdc-dev mailing list >Lin...@li... >https://lists.sourceforge.net/lists/listinfo/linuxdc-dev > > > > > |
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From: Mike F. <va...@ge...> - 2004-06-26 04:26:58
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On Friday 25 June 2004 10:12 pm, Michael Robinson wrote: > Check out Bitmaster's mirror at my site, he has the IDE schematic there > that tells you how to connect your IDE circuit to the Dreamcast: > <snip> > that utilizes currently available components and well document it so > people don't have to keep running around trying to figure out how to do it. yeah, ive been through all those sites, ive got the parts now to build Kiyoshi's dcext ;) http://linuxdc.net/dcext/ the only real part i'm lacking (due to no schematic/etc...) is that dc ext port that the modem turned into -mike |
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From: Michael R. <mro...@fu...> - 2004-06-26 04:52:32
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All you have to do is figure out which end of the parallel port connector has the four power pins and then from that you can figure out what every other pins does (assuming Kiyoshi lyed them out in correct order on the schematic). If Kiyoshi didn't lay them out correctly then just cross reference Bitmaster's pinout and use the same process. Once you figure out which pin is which just solder the wires of your "SCSI" cable to the corresponding pin of the parallel connector. There's no logic inside the old modem, it just all of the "SCSI" cable wires soldered on to the parallel port according to the schematic. Tell me how it goes. Michael Robinson mro...@fu... www.fuzzymuzzle.com Mike Frysinger wrote: >On Friday 25 June 2004 10:12 pm, Michael Robinson wrote: > > >>Check out Bitmaster's mirror at my site, he has the IDE schematic there >>that tells you how to connect your IDE circuit to the Dreamcast: >><snip> >>that utilizes currently available components and well document it so >>people don't have to keep running around trying to figure out how to do it. >> >> > >yeah, ive been through all those sites, ive got the parts now to build >Kiyoshi's dcext ;) >http://linuxdc.net/dcext/ >the only real part i'm lacking (due to no schematic/etc...) is that dc ext >port that the modem turned into >-mike > > >------------------------------------------------------- >This SF.Net email sponsored by Black Hat Briefings & Training. >Attend Black Hat Briefings & Training, Las Vegas July 24-29 - >digital self defense, top technical experts, no vendor pitches, >unmatched networking opportunities. Visit www.blackhat.com >_______________________________________________ >Linuxdc-dev mailing list >Lin...@li... >https://lists.sourceforge.net/lists/listinfo/linuxdc-dev > > > > > |
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From: Michael R. <mro...@fu...> - 2004-06-26 21:16:28
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I'm glad you found the correct part number for the 74ALS245 transceivers, I've been looking for them (everyone else labels them as 74245). They were right in front of me on Kiyoshi's site the entire time. Interestingly enough we don't need them, all they are is simple logic to isolate the IDE bus from the parallel port and select which way the data can flow, they can be implemented with logic in the Xilinx. We may be able to improve the operation speed too if we use the 7.5 ns version of the Xilinx versus the 15 ns version Kiyoshi used. That's half of the delay of Kiyoshi's version. I'm going to try integrating all of the logic into the Xilinx that way I can play around with it and add extra logic so you can use multiple devices, etc. I'll put the datasheets for the parts I found up in case anyone needs them. Also, about the programmer, you can build one for about $10.00 from the parallel programmer schematic in Xilinx's JTAG manual, I'll post that too for anyone whois interested. Good luck. Michael Robinson mro...@fu... www.fuzzymuzzle.com Mike Frysinger wrote: >On Friday 25 June 2004 10:12 pm, Michael Robinson wrote: > > >>Check out Bitmaster's mirror at my site, he has the IDE schematic there >>that tells you how to connect your IDE circuit to the Dreamcast: >><snip> >>that utilizes currently available components and well document it so >>people don't have to keep running around trying to figure out how to do it. >> >> > >yeah, ive been through all those sites, ive got the parts now to build >Kiyoshi's dcext ;) >http://linuxdc.net/dcext/ >the only real part i'm lacking (due to no schematic/etc...) is that dc ext >port that the modem turned into >-mike > > >------------------------------------------------------- >This SF.Net email sponsored by Black Hat Briefings & Training. >Attend Black Hat Briefings & Training, Las Vegas July 24-29 - >digital self defense, top technical experts, no vendor pitches, >unmatched networking opportunities. Visit www.blackhat.com >_______________________________________________ >Linuxdc-dev mailing list >Lin...@li... >https://lists.sourceforge.net/lists/listinfo/linuxdc-dev > > > > > |
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From: Mike F. <va...@ge...> - 2004-06-27 22:29:37
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On Saturday 26 June 2004 05:15 pm, Michael Robinson wrote: > Interestingly enough we don't need them, all they are is simple > logic to isolate the IDE bus from the parallel port and select which way > the data can flow, they can be implemented with logic in the Xilinx. yeah, i know they're just simple logic chips, but my strength lies in higher languages, so i didnt think too much of reworking the design ... at least not until i got the thing built ;) > We may be able to improve the operation speed too if we use the 7.5 ns > version of the Xilinx versus the 15 ns version Kiyoshi used. That's > half of the delay of Kiyoshi's version. I'm going to try integrating > all of the logic into the Xilinx that way I can play around with it and > add extra logic so you can use multiple devices, etc. that'd be awesome ... at this point though, i see any hd interface as being a billion times better than trying to develop over a nfs root ;) > I'll put the > datasheets for the parts I found up in case anyone needs them. Also, > about the programmer, you can build one for about $10.00 from the > parallel programmer schematic in Xilinx's JTAG manual, I'll post that > too for anyone whois interested. Good luck. i bought a programmer on ebay (managed to get lucky) but i'd like to get the documents you refer to ... i can post them on the linuxdc site under the dcext page ... -mike |
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