W83877TF Datasheet, PDF (118/154 Pages) Winbond – I/O chip disk drive adapter

W83877TF
This register is used to select whether these interrupt request pins are in the IRQ sharing mode. While
in the IRQ sharing mode, the corresponding pin is low active for 200ns for the interrupt request and
keeps tri-stated otherwise.
SHARH (Bit 7):
0
pin IRQ_H in the legacy ISA IRQ mode.
1
pin IRQ_H in the IRQ sharing mode.
SHARG (Bit 6):
0
pin IRQ_G in the legacy ISA IRQ mode.
1
pin IRQ_G in the IRQ sharing mode.
SHARF (Bit 5):
0
pin IRQ_F in the legacy ISA IRQ mode.
1
pin IRQ_F in the IRQ sharing mode.
SHARE (Bit 4):
0
pin IRQ_E in the legacy ISA interrupt mode.
1
pin IRQ_E in the IRQ sharing mode.
SHARD (Bit 3):
0
pin IRQ_D in the legacy ISA IRQ mode.
1
pin IRQ_D in the IRQ sharing mode.
SHARC (Bit 2):
0
pin IRQ_C in the legacy ISA IRQ mode.
1
pin IRQ_C in the IRQ sharing mode.
SHARB(Bit 1):
0
pin IRQ_B in the legacy ISA IRQ mode.
1
pin IRQ_B in the IRQ sharing mode.
SHARA (Bit 0):
0
pin IRQ_A in the legacy ISA IRQ mode.
1
pin IRQ_A in the IRQ sharing mode.
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Publication Release Date: March 1998
Version 0.61