Download Print this page

Basic Operation - Sharp MZ1F10 Service Manual

Hard disk interface
Hide thumbs

Advertisement

(4) Magnification of the C Part
1157
!.@]
1407
1657
3. BASIC OPERATION
3-1. Seek Operation
The step for seeking is generated by FPU (NDC 840). The
step rate is designated by a command from the host.
-
DIRECTION I
N
-S TEP
1-80
mS
L
A
cco
rd
i ng
l
o
ll
e
p rat
e
-
5
-
Seek
1
step output
3-2. Read Operation
-
M Z
-
5600A
In the read operation
,
the ID read is first executed to find
the designated
sector.
On finding the desired ID field
,
data
are read.
The data read by the disk are separated.
NRZ Data and Clock from MFM Data are transferred to
NDC-840.
The data are converted from serial to 8 -bit parallel and are
transferred by DMA to RAM
.
Error detection is executed in
NDC-840,
and if the error is
less than 11 bits, error correction is executed in association
with
CPU-Z-80.

Advertisement

loading

  Also See for Sharp MZ1F10

  Related Manuals for Sharp MZ1F10

This manual is also suitable for:

Mz5600a