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- TABLE OF CONTENTS
-
- misc.resource/AllocMiscResource
- misc.resource/FreeMiscResource
- misc.resource/AllocMiscResource misc.resource/AllocMiscResource
-
- NAME
- AllocMiscResource - allocate one of the miscelaneous resources
-
- SYNOPSIS
- CurrentUser = AllocMiscResource( unitNum, name )
- D0 D0 A1
-
- char * AllocMiscResource(ULONG,char *);
-
- FUNCTION
- This routine attempts to allocate one of the miscellaneous resources
- If the resource had already been allocated, an error is returned. If
- you do get it, your name is associated with the resource (so a user
- can see who has it allocated).
-
- This function may not be called from interrupt code
-
- DESCRIPTION
- There are certain parts of the hardware that a multitasking- friendly
- program may need to take over. The serial port is a good example. By
- grabbing the misc.resource for the serial port, the caller would
- "own" the hardware registers associated with that function. Nobody
- else, including the system serial driver, is allowed to interfere.
-
- Resources are called in exactly the same manner as libraries.
- From assembly language, A6 must equal the resource base. The
- offsets for the function are listed in the resources/misc.i
- include file (MR_ALLOCMISCRESOURCE for this function).
-
- INPUTS
- unitNum - the number of the resource you want to allocate
- (eg. MR_SERIALBITS).
- name - a mnenonic name that will help the user figure out
- what piece of software is hogging a resource.
- (havoc breaks out if a name of null is passed in...)
-
- RESULTS
- CurrentUser - if the resource is busy, then the name of
- the current user is returned. If the resource is
- free, then null is returned.
-
- BUGS
-
- SEE ALSO
- resources/misc.i, FreeMiscResource()
- misc.resource/FreeMiscResource misc.resource/FreeMiscResource
-
- NAME
- FreeMiscResource - make a resource available for reallocation
-
- SYNOPSIS
- FreeMiscResource( unitNum )
- D0
-
- void FreeMiscResource(ULONG);
-
- FUNCTION
- This routine frees one of the resources allocated
- by AllocMiscResource. The resource is made available
- for reuse.
-
- FreeMiscResource must be called from the same task that
- called AllocMiscResource. This function may not be called from
- interrupt code.
-
- INPUTS
- unitNum - the number of the miscellaneous resource to be freed.
-
- RESULTS
- Frees the appropriate resource.
-
- BUGS
-
- SEE ALSO
- resources/misc.i, AllocMiscResource()
-
-