| 摘要 |
PURPOSE:To make it possible that the user generates a large-scale program and process a large quantity of data, by extending commands, which can be executed in a computer, up to commands of a command table written in an ROM pack. CONSTITUTION:A command table XTB for extension and a processing routine XPR corresponding to command names are written in an ROM pack 20. The pack 20 is mapped in an I/O address of a computer 10. The command table XTB and the processing routine XPR written in the pack 20 are transferred to an RAM3 on memory addresses of the computer 10, and commands which can be executed by the computer 10 are extended to commands of the command table XTB written in the pack 20. |
