knudsen@ihnss.UUCP (10/26/83)
Anyone interested in using the Coco's interrupts (or turning them off) should get a copy of "Assembly Language Graphics for the TRS80 Coco" by Don & Kurt Inman (or is it just Don?). It's a bit expensive just for that, but then you get a lot else besides. If you use assembler at all, this book is worth it. If you're serious about assembler, get the Leventhal book as well; it covers overall techniques, details of each instruction (did you know that ABX is NOT equivalent to LEAX B,X?), but has no Coco specific stuff.