dt@yenta.alb.nm.us (David B. Thomas) (06/08/91)
I have gotten enough inquiries due to my incidental bragging :^) that I have started seriously making an effort to put together some plans for my "piggyback" on-the-motherboard second hard disk upgrade. What's really cool is, it's 100% ascii, even the schematic! Sorry, I don't do cheap draw :-) Anyway, when it's finished, I'll post it as a shell archive. In it will be an introductory file, detailed procedures, a schematic (I already drew that -- it just fits on one 80x66 sheet!) and a wiring chart. I won't be going to the level of explanation and detail that Gil and Lenny did with their ICUS upgrade. They did a really admirable job of making the upgrade accessible even to fairly uninitiated hardware hackers. My upgrade will be directed toward the more seasoned hardware hacker. The plans show a good deal of detail, but I omit such things as how to open the 3b1, how to solder, where to find parts, etc. That information is generally available from other sources, anyhow. I do go into detail where something unusual is required, like bending pins on an IC a certain way or piggybacking one chip onto another. Well, you'll see! Anyway, I just wanted to let everyone know that I will be doing this, so if you're confident with a soldering iron and you're contemplating a two disk upgrade for your 3b1, another alternative is coming right up. little david ps -- those of you at the Dallas BOF in January saw my presentation on this mod. -- Unix is not your mother.