| 摘要 |
PURPOSE:To trace a data at the optional part of a program without taking trouble at all to the program of a body, by setting a trace element bit and a trace parameter to a parity use memory. CONSTITUTION:A trace controlling circuit 7 is provided, and a trace element bit and a trace parameter are stored in a parity data use ROM 3, so that a trace use program is stored in a RAM 4. The trace controlling circuit 7 is constituted with an interruption generating circuit 71 and a trace parameter latching circuit 72, etc. Also, in the parity data use ROM 3, trace element bits T0,T1......and trace parameters TP0,TP1......are stored together with parity bits P0,P1....... |
