This simple template based set of calculations provides an alternate to Script Basic programming for very simply operations such as logically ANDing or ORing a couple registers to produce a result to be sent out to another register. Select the operation to be performed from the drop list. All but logical NOT operations require two operands. Enter register numbers as applicable.

Some operations are valid for ranges of registers. Select "and" or "thru" to select two registers or multiple registers in a range. Average, sum, and logic operations are valid for ranges of multiple registers.

Delete will remove the rule number shown in the "Showing" box. Insert will insert a new rule before the rule number shown, and is used for placing rules between existing rules. It is not necessary to use Insert to add rules to the bottom of the list or to define any rule presently having "none" for an operation (unused rule).

Error checking will prevent entry of an invalid register number in the rule. However, if a previously valid rule is invalidated by that register being later deleted, the now invalid rule will prevent other updates. Because error trapping happens sooner than the insert/delete process, the delete will not remove the invalid rule. To get around this problem, enter zero for register number, update, then delete (or enter a new valid register number if you intend to keep the rule).

Selecting "none" as the operation effectively deletes the rule even though it will still appear in the list until deleted. Unused rules at the end of the list will always show "none" as the operation. If you wish to prevent these from being displayed, reduce the number of rules enabled.

The number of rules enabled simply limits the scope of rule review so that you do not have to review a lot of unused rules.