Software 4.3 Description of commands All operations are started by commands. They are execu- ted in the accumulator of the CPU. Basic terms: Ш Load commands load a value into the accumulator Ш Logical operations link the operand value with the con- tents of the accumulator Ш Assignments write the contents of the accumulator into the specified operands (in the case of bit operations: the status of bit 7) Ш Set commands set (S) or reset/clear (R) the contents of the operand if the previous operation in the accumulator results in “logical 1”. 47