junior cookbook

4-28 - elektor april 1981 junior cookbook VVith thanks to H.P. Diehl and H.D. De Mulder j Far be it from us to let anyone starve, so here are a few hints, alternatives and other useful "brain food" to keep you and your computer going until the main course, Book Two, arrives. Menu 1: Decimal arithmetic As you will remember from Book 1, subtractions and additions may be carried out both in binary and in decimal. Whenever instruction SED (F8) for decimal appears in the program, problems will arise if the computer jumps back to the monitor (IC00) via a BRK at the end of the program or when operating in single-step mode. What increment it as often as necessary by depressing the + key function (key C!). . Like going from London to Liverpool via Newcastle. But how can this happen? During the monitor subroutine GETKEY the key value is determined by adding 07 nought times, once or twice to a basic value. Everything works out fine provided this takes place in binary, but when the computer...