| 摘要 |
PCT No. PCT/JP79/00265 Sec. 371 Date Aug. 13, 1980 Sec. 102(e) Date Aug. 13, 1980 PCT Filed Oct. 19, 1979 PCT Pub. No. WO80/01323 PCT Pub. Date Jun. 26, 1980.An electronic computer is disclosed which includes microprogram memory in which a microinstruction is stored, a microaddress control unit for supplying an address to said memory and a register for holding a microinstruction read out of said microprogram memory, the contents of the microprogram memory are stored in the first section of the memory of the microprogram-testing apparatus. The second section of said memory is supplied with data for testing the microinstruction. While the microinstruction is executed, the microinstruction and test data are read out of said memory at the same time, and supplied to the error detector and trace control circuit. The microprogram-testing apparatus further comprises a function switching control circuit, which decides whether the error detector or trace control circuit should be enabled. Where the error detector is selected, then an error in the microprogram is detected. Where the trace control circuit is selected, then the execution of the microinstruction or the halt of said execution is controlled.
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