ADLINK PCI-9810 - Manual (Page 36)

24 Registers
FIFO Status Register
Monitors some of the PCI-9812/9810 status.
Address: BASE + 18h
Attribute: Read
Data Format:
Bit 7 6 5 4 3 2 1 0
BASE+18h — — ACQ TD PTCO FIFOOR FIFOHF FIFOIR
BASE+19h — — — — — — — —
BASE+1Ah — — — — — — — —
BASE+1Bh — — — — — — — —
Bit 0 FIFOIR, FIFO input ready flag.
0: FIFO is not ready for input; FIFO is full.
1: FIFO is ready for input (not full).
Bit 1 FIFOHF, FIFO half full flag.
0: FIFO is not half-full yet.
1: FIFO is at least half-full.
Bit 2 FIFOOR, FIFO output ready flag
0: FIFO is not ready for output; FIFO is empty.
1: FIFO is ready for output (not empty).
Bit 3 PTC0, post trigger counter is 0
0: Post trigger counter is not 0.
1: Post trigger counter reached 0.
Bit 4 TD, trigger detection flag
0: No trigger condition has been met; no trigger is detected.
1: Trigger is detected.
Bit 5 ACQ, acquisition flag
0: Card is not acquiring data. Card maybe disabled or is waiting
for a trigger.
1: Card is acquiring data.
Bit 6..31 Any value