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AH = 0Ah CL = 00h ES:DI -> buffer for system flags (see #03949)
Return:
ES:DI buffer filled
Notes: On a slave, only the NX_Busy flag is returned. All three flags are at fixed positions, so this function only needs to be called once. An interrupt handler should only perform DOS or device accesses when all three flags are 00h
Format of Alloy system flags: Offset Size Description (Table 03949) 00h DWORD pointer to NX_Busy flag (nonzero when communicating with users) 04h DWORD pointer to device driver busy flag 08h DWORD pointer to InTimer flag
Category: Network - Int 7Fh - A
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