Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!linus!decvax!harpo!seismo!hao!hplabs!sri-unix!ciaraldi@Rochester.ARPA From: ciaraldi@Rochester.ARPA Newsgroups: net.micro.cpm Subject: Re: Need help designing homebrew system Message-ID: <16692@sri-arpa.UUCP> Date: Wed, 15-Feb-84 15:51:01 EST Article-I.D.: sri-arpa.16692 Posted: Wed Feb 15 15:51:01 1984 Date-Received: Mon, 20-Feb-84 02:00:09 EST Lines: 36 From: Mike CiaraldiI would recommend some good books on designing digital and computer hardware. Don Lancaster's "TTL Cookbook" covers the basics, and I think he has one for microprocessors now. Sol Libes and someone whose name I forgot have a book on interfacing to the S-100 bus. I realize you are using the Multibus, but the principles are similar. You might also get the books Godbout publsihes which collect all the technical manuals of their products. Intel makes several Multibus CPU, memory, and peripheral boards. I think they will send you tech manuals, including schematics, for free. In addition, if you want to run CP/M 3.0 you will need bank switching so the CPU can address more than 64K of memory. Just having a latch for hig-order address lines may not be enough. finally, for bringing up the software, look at the sample BIOS's in the SIMTEL archives. It is much easier to produce a working CP/M operating systemif you have access to another CP/M system with assembler, editor, and compatible disk drives. Good luck! Mike Ciaraldi ciaraldi@rochester