| 摘要 |
PROBLEM TO BE SOLVED: To provide the access form conversion method and device capable of simplifying connecting in a hardware and also handling access to a PC card equally to an external memory or the like in a software. SOLUTION: An REG preparation circuit 7 prepares REG for selecting a space to be accessed from !MEM/IO and CIS(card information structure) signal input on the side of a microcomputer 4. The REG turns the space to be accessed to a memory space when !MEM/IO is L and CIS signal is L. Also, when the !MEM/IO is L and the CIS signal is H, the space to be accessed is turned to a CIS space. Then, when the !MEM/IO is H and the CIS signal is 'Don't care', the space to be accessed is turned to an I/O space. |
