Read Data Signal Timing; Write Protect (Prt) - NEC FD1165 Maintenance Manual

3.4.6 Read Data
A signal on this line conditions the data that is sent from
the disk drive to the host system.
Read Data or
upon the position of
Figure 3-7 shows typical RDT-conditioned signals.
Figure 3-7
3.4.7

Write Protect (PRT)

The Write Protect signal goes High when the flexible disk
does not have a write protect notch.
has a write protect notch,
Low. A Low Write Protect signal puts the flexible disk in
a write-protected state.
3.4.8 Disk Change (DCG)
When the flexible disk has been changed since the disk drive
was last selected, this signal goes Low.
the Disk Change signal timing.
(RDT)
the Standardized Read Data signal depending
the RD jumper

Read Data Signal Timing

the Write Protect signal goes
3-8
The line transmits the
(see Section
If the flexible disk
Figure 3-8 shows
2.8.8).