W83697HFFDC Information Storage Devices, Inc, W83697HFFDC Datasheet - Page 43
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W83697HFFDC
Manufacturer Part Number
W83697HFFDC
Description
LPC Interface I/o Plus Game/midi Port, Fan Control, Flash ROM I/f
Manufacturer
Information Storage Devices, Inc
Datasheet
1.W83697HFFDC.pdf
(167 pages)
- Current page: 43 of 167
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3.2
There are several status, data, and control registers in W83697HF. These registers are defined below:
3.2.1
This register is used to monitor several disk interface pins in PS/2 and Model 30 modes. In PS/2 mode,
the bit definitions for this register are as follows:
INIT PENDING (Bit 7):
This bit indicates the value of the floppy disk interrupt output.
DRV2# (Bit 6):
0
1
STEP (Bit 5):
This bit indicates the complement of STEP# output.
TRAK0# (Bit 4):
This bit indicates the value of TRAK0# input.
A second drive has been installed
A second drive has not been installed
base address + 0
base address + 1
base address + 2
base address + 3
base address + 4
base address + 5
base address + 7
Status Register A (SA Register) (Read base address + 0)
Register Descriptions
ADDRESS
OFFSET
7
6
5
DT (FIFO) REGISTER
4
SB REGISTER
MS REGISTER
SA REGISTER
TD REGISTER
DI REGISTER
3
READ
- 34 -
2
1
0
REGISTER
DIR
WP
INDEX
HEAD
TRAK0
STEP
DRV2
INIT PENDING
Publication Release Date: Feb. 2002
DT (FIFO) REGISTER
DO REGISTER
DR REGISTER
CC REGISTER
TD REGISTER
W83697HF/F
WRITE
Revision 0.70
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