SCSI to IDE joe lobocki jlobocki <mailto:cctalk%40classiccmp.org?Subject=Re%3A%20SCSI%20to%20IDE&In-Reply-To= %3CAANLkTinO5OZGqmp_tiokWNnqYD_e7AAwKDE7ALoG2_8%2B%40mail.gmail.com%3E> at gmail.com Fri Nov 26 10:48:01 CST 2010 * Previous message: AT <http://classiccmp.org/pipermail/cctalk/2010-November/294377.html> &T 3B1 Unix PC Boot ROMs * Next message: SCSI to IDE <http://classiccmp.org/pipermail/cctalk/2010-November/294385.html> * Messages sorted by: [ date ] <http://classiccmp.org/pipermail/cctalk/2010-November/date.html#294382> [ thread ] <http://classiccmp.org/pipermail/cctalk/2010-November/thread.html#294382> [ <http://classiccmp.org/pipermail/cctalk/2010-November/subject.html#294382> subject ] [ author ] <http://classiccmp.org/pipermail/cctalk/2010-November/author.html#294382> _____ Ok, so I have been doing research, and this affects everyone here who collects SGI, apple, and anything using scsi. in the near future, the supply of smaller SCSI drives will eventually dry up, due to failure from age and lack of supply, as I believe they are no longer manufactured, unless for the industrial/server market. I could be wrong on that part, but I take it as such because my searching for them brings up nothing new. what does that mean for collectors? it means that your neat little apple or SGI or etc will run, until the scsi disk dies, then we will be left cannibalizing machines for disks, paying ridiculous prices for leftover scsi disks, which will skyrocket because of the small supply. So what is our option? I have seen SCSI to IDE adapters around, but they go up into the $100's to $200's, say you have a minimum 10 machines, that leaves you somewhere between $1,000 and $2,000 total, before the disk or devices. If we could design a simple SCSI to IDE interface, we could be set for a good long while on storage for these devices for a decent amount of time. There are all sorts of adapters to IDE, there is CF to IDE, SD to IDE, SD to CF which could be placed in a CF to IDE adapter if need be, i'm sure one could also rig up a USB drive to SCSI if one tried, but I could be wrong. Having said that, I know nothing about programming microcontrollers or simple processors, but I have seen people on the board who do. I'm sure if we can find a chip capable, and lay out a schematic, source code, and possibly a board layout, members could source their own boards and components to build their own devices at home (given they have a chip programmer), so no one person has to take on the responsibility of supplying parts, kits, finished devices unless they so choose to. This is just an idea, if nothing becomes of it, no big deal, just putting it out there.... -Joe _____ * Previous message: AT <http://classiccmp.org/pipermail/cctalk/2010-November/294377.html> &T 3B1 Unix PC Boot ROMs * Next message: SCSI to IDE <http://classiccmp.org/pipermail/cctalk/2010-November/294385.html> * Messages sorted by: [ date ] <http://classiccmp.org/pipermail/cctalk/2010-November/date.html#294382> [ thread ] <http://classiccmp.org/pipermail/cctalk/2010-November/thread.html#294382> [ <http://classiccmp.org/pipermail/cctalk/2010-November/subject.html#294382> subject ] [ author ] <http://classiccmp.org/pipermail/cctalk/2010-November/author.html#294382> _____ More information <http://www.classiccmp.org/mailman/listinfo/cctalk> about the cctalk mailing list _____ -----REPLY----- Hi! I am willing to make a PCB and offer it as part of the N8VEM home brew computer project. If someone would send me a design I will be glad to make a schematic, PCB layout, and get a small number of prototype boards. This could be a simple circuit comprised of a Z80 with three 8255 PPIs, RAM and ROM (one 8255 for IDE, two 8255s for SCSI-2) or a more complex microcontroller scheme. Please contact me if interested. Thanks and have a nice day! Andrew Lynch