W83977EF Datasheet, PDF (38/150 Pages) Winbond – WINBOND I/O

W83977EF
(19) Sense Drive Status
PHASE R/W D7 D6 D5 D4 D3 D2 D1 D0
Command W
W
Result
R
00 0 00 10 0
0 0 0 0 0 HDS DS1 DS0
---------------- ST3 -------------------------
REMARKS
Command Code
Status information about
disk drive
(20) Invalid
PHASE R/W D7 D6 D5 D4 D3 D2 D1 D0
REMARKS
Command W
------------- Invalid Codes -----------------
Invalid codes (no
operation- FDC goes to
standby state)
Result
R
-------------------- ST0 ----------------------
ST0 = 80H
Publication Release Date: April 2003
-32 -
Revision 1.1