Some of our readers have reported difficulty running Bacterion! (ANALOG issue 20) on their 600 and 800XL computers. Game authors Kyle Peacock and Tom Hudson are working on a fix for this problem, which we will present in a future issue.
Archiver's Note: They never did get around to publishing a fix. But don't worry! A patch now exists, and you can find it here as an extra for ANALOG #20.