Stage 1 Interfaces

The following functions must be made available by the mini-FSD. These 
functions will be called only during stage 1. 

oMFS_CHGFILEPTR 
oMFS_CLOSE 
oMFS_INIT 
oMFS_OPEN 
oMFS_READ 
oMFS_TERM 
  

The following helper functions are available to the mini-FSD. These 
functions may be called only during stage 1. 

oMFSH_DOVOLIO 
oMFSH_INTERR 
oMFSH_SEGALLOC 
oMFSH_SEGFREE 
oMFSH_SEGREALLOC