Write Data Signal Timing; Index Signal Timing; File Unsafe Reset (Fur) - NEC FD1165 Maintenance Manual

Figure 3-5
3.3.9

File Unsafe Reset (FUR)

A low FUR signal resets the File Unsafe status (see Section
3.4.5).
3.3.10 In Use (USE)
The USE line goes Low to instruct the disk drive to lock the
door (see Section 2.8.6 and 218.7) .
3.4 OUTPUT SIGNALS
This section
FD1165.
3.4.! Index (IPX)
This signal occurs on the Index Line once for every rotation
of the flexible disk.

Write Data Signal Timing

describes the
Figure 3-6 shows the IDX pulse.
Figure 3-6

Index Signal Timing

output signals
3-6
of the Model