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ETX-945 User Manual 1.00 www.diamondsystems.com Page 25
4.3.7 Floppy drive interface
These pins carry data and control information to/from the board’s floppy drive controller, as indicated.
Signal Name
Signal Function
Direction
LPT/FLPY#
Interface configuration input
In
RESERVED
Do not connect
n/a
DENSEL
Diskette data density select
Out
INDEX#
Index hole indicator
In
TRK0#
Track 0 indicator
In
WP#
Write-protect indicator
In
RDATA#
Read data from drive
In
DSKCHG#
Drive door opened indicator
In
HDSEL#
Head select 0/1 control
Out
DIR#
Step head step direction control
Out
STEP#
Step pulse control
Out
DRV
Drive select control
Out
MOT#
Drive motor activation control
Out
WDATA#
Write data to drive
Out
WGATE#
Write enable control
Out
Note: These pins are shared with the board’s bidirectional parallel port function, under control of
the LPT/FLPY# input signal. When that signal is left unconnected or held high, the port is placed
in parallel-port mode.