| 摘要 |
A method for reading various registers of a computer system without changing the emulator software. Address register 22, data memory I/O 30 and control register 26 surrounding D-MEM (data memory) 14 are configured as registers of a master/slave latching circuit in which serial scanning is possible, and are sequentially scanned during one scanning pass (1). Data memory I/O register 30 is connected to D-BUS (data bus) 10. External I/O registers RG1, RG2, . . . RGn are respectively connected to D-BUS (data bus) 10 and mapped in the I/O space. An IN'/OUT' instruction which can transfer data between data memory I/O register 30 and each external I/O register RG1 (i=1, 2, . . . , n) is generated.
|
