Usage of mmio* function set of MMOS/2
by Prokushev
I/O Procedures
I/O Procedures (IOProc in short) are set of DLLs which provides MMOS/2 access to format/file data. IOProc handles all I/O tasks:
- Storage access (Storage IOProc)
- Format handling (Format IOProc)
Storage IOProc is lowest level of IOProc hierarhy.
Format IOProc actually transforms corrseponding file format to common MMOS/2 format and vice versa.
Usage
From user (application level) point of view no difference which file you loading. Is it GIF, PNG, JPEG, BMP or something other. Its work of IOProc subsystem of MMOS/2 to handle corresponding format. So, user has two tasks
- Read image
- Store image