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AMX 86 Procedures
K
A
DAK
309
ajsmtag ajsmtag
Purpose Find a Semaphore
Used by
n Task o ISP o Timer Procedure n Restart Procedure n Exit Procedure
Setup AMXID semid;
char tag[4];
int status;
.
.
status = ajsmtag(&semid, tag);
AX BX= [DX:CX] see note
Where semid is a pointer to storage for the semaphore id of the semaphore of
interest.
tag is a pointer to a 4-character name identifying the semaphore of
interest.
Results Interrupts are disabled and then restored to their state at the time of the
call.
Status is returned.
AEROK = Call successful
AERNSS = No semaphore with matching tag can be found
If more than one semaphore was created with the same tag, you will get
back the semaphore id of one of them, but which one is not certain.
If a semaphore with the given tag cannot be located, the semaphore id in
semid will be undefined.
Semaphore tags are 4 characters long. All characters must match your
search tag exactly.
Note A tag
'ABCD' is presented in register DX:CX with 'A' in CL and 'D' in
DH.
See Also ajsmcre