| 摘要 |
A microcomputer having: a register-set portion provided with a plurality of register sets having a plurality of registers, a first memory means (44) for storing select data for selecting said register-sets, a register-set selection means (41) for selecting said register-sets in accordance with said select data stored in said first memory means, a second memory means (52) for storing select data change data for changing the selection of said register sets, a third memory means (44) for storing, for the purpose of reservation, said select data stored in said first memory means, and an arithmetic means (62) for performing predetermined operations using said select data stored in said first memory means (44) and said select data change data stored in said second memory means (52) and supplying the results of the predetermined operations to said first memory means (44) to change said select data. <IMAGE> |
