From: utzoo!decvax!harpo!floyd!cmcl2!philabs!sdcsvax!sdccsu3!ee163fy Newsgroups: net.micro.zx Title: ZX81 Book For Advanced Users Article-I.D.: sdccsu3.581 Posted: Sun Apr 24 15:20:08 1983 Received: Wed Apr 27 04:40:36 1983 I have purchased a book entitled "The Explorer's Guide to the ZX-81 and Timex Sinclair 1000". It is written by Mike Lord and published by Reston Publishing Co. a Prentice-Hall Company. The book contains a description of the ROM routines (including the source code for cassette load and dump), a bunch of games, application notes (including the listing of a linear programming program in BASIC), some useful utilities (like RAM and ROM tests), and a few hardware modifications (like RAM expansion cards and an I/O card). All in all I think the book is well worth the $12.95 I paid for it. Sincerly, Jeff Glasson ...!sdcsvax!sdccsu3!ee163fy