=> R0 = 10
R1 = pointer to directory name
R2 = pointer to buffer
R3 = number of objects to read
R4 = where to start, 0 first time
R5 = length of buffer
R6 = wildcarded name to match (if 0 "*" is used)
<= R3 = number of objects read
R4 = where to continue, or -1 for no more
C flag is clear if R3 = 0, else it is set
This SWI reads entries from the specified directory. The correct code structure to call this SWI is:
repeat
{
call OS_GBPB 10
if (R3 <> 0)
{
process buffer
}
} until (R4 = -1)
as it is legal to return R3 = 0 before the end of the directory. Also, do not assume anything about the value in R4 - Filer_Action assumes that it increases by one for each entry read and comes horribly unstuck.
[sh-index] Back to list of manuals
|
| |
