Sharp MZ1F10 Manual de usuario

-

MZ

-

5600A

3. BASIC OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

4. DRIVE INTERFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

5. ENCODER/DECODER,

DATA

SEPARATOR

............................

~

......

10

6.

MAINTENANCE

.........................................................

12

7.

EXPLANATION OF

LSI

...................................................

15

9.

PARTS GUIDE AND LIST

..._..,

1.

GENERAL

DUNTK

1517

ACZZ

is

constructed

with

four

exclusive

LSis,

CPU

Z-80

and

others.

The description here

is

mainly

on

the LSis.

2.

HOST

INTERFACE

NDC-848

is

an

LSI

device

for

the

NCL

host interface.

NDC-848

can

be

easily conncted

with

the host

and

can

construct a disk

controller

with

NDC-840 (HOC)

and

others.

Commands

and

Data Write from the host

are

set in the

internal register

of

N

DC

-848

and

are

transferred

to

RAM

by

DMA

of

NDC-840.

Status

and

Data

Read

are

set

by

DMA

in the register

of

NDC848

and

are

read

by the host.

2-1. Main Operation Time Chart

(1)

COMMAND

SET

1/

0pon

11

---

-,

,------

\

,------)}--

-

""

, ,

r-

---

(0383JH I.

\...

___

_J

~----'

~-----

IOWC

DATA

CS

ADI\0

ADRI

DRQ

H

IJoVR

UOO-UU7

---

--\

....

'.:'

.....~,------

-,\...

'~

.J~-----

-

n

-----\~

~

.Jr-

---

--

----

--c~------

--c=)------1)--

--

--c=

..

J---

----

note:

-----

host signals

-----internal

signals

- 1 -

-

MZ

-

5600A

(2) STATUS

READ

1/0

port

H-

----

-,

I----

---

-

--

[0380 )

HL

\......

_____

...J

DATA

H

L

H

DD

O

~

DD7

-------,

,-------------

\_

__

_)

------

--z.-J-----

--------

25 ns

-I-~

0.31/J-:-

-1--

25 ns

[ oin ) [ 1" [ o

in

)

0.

111

5 .... -0

[ o

in)

[ o

in

)

r

note:

---

--

host signals

-----

internal signals

(3) RESULT READ

110

pon

ll

- - - - - - - - - -

~,

,,...

- - - -

-1~

- - -

-.

,

[

03

82

] H L

\.

............/

\....

............

J

'-

.......

... J

\

...

Jr

............ ---

....

""'\

....

...J,,...

- - - - -

-{J-

- -

.........

,L

.J,- - - - -

DATA

----

-

()----

--

-{)--

- - - -

-H----

-{}-

-

----

(4)

DATA

READ

(DMA)

~

....

,\....

___

,.~

---

---""'

............

...J

•

.--

...........

-

--,'---

..J

r-

-----t--

"'

.

.._

___

F--

.............

----

'u c

Jto

.........................

\

_____

/,_.

........

-

--·\

...............

_,

•

.------,\...

.

............

_,

r--

Jt-

--

-------.~---

_,

.

.--

............

....

rnl'i:.'

------

--.\..._

..J

r-

-----

--,

'-

-J

,,..------

---\

......

Jr-

-

-~-

-

-----.\...

...

J

',.....

...

--

---

•AT•

----

---

-c

:::>-----

-----c:::>------

----c:::>-

-

-+-------c)------

nnl

-----

------

----

-------

---------------n--

-------

-"'....

___

_

-

MZ-5600A

(5) DATA WRITE (DMA)

OI

UlQO

--

...

\ ........

_,'

.....

-

----...,

,....

---

....

-

-.\

__

...

_/,..

- - - -1f- --.,'-

...

Jr

- - - - - ......

"'i5ACi"a

--

...

...,\_---

../,...-

......

-

'"'',

....

- - - J:

---

--

~

\

...

-

--

j

.....

-

~f-

-

--

'"""

·~

-·-

...

Jr

-

...

-

--

"--

....1

.....

----

- - .......\.... .... J

......

- -

---

-....\

...

-

J,

....

-

-jf--

- -

-

~

..........

_/.-

-

--

- -

...

DATA

-------CJ--------CJ----

-

---c:J---jf-------c:)------

~

----

---

- - -

---

--------

---

--

- - !

r-

--

- - -

---

;_ -

~

~~

~-

--.

~

~~--~

}~~

2-2. Transfer Method

DUAL-BUF

transfer

B

liF

I

( RA

ll

)

(1) RAM

• HDC

program

area

• BUF 0, BUF 1 area

Eac~

BUF

is

a 1

sector

BUF.

--L

wr

ite exec

ut

ion

-!--J.

-

ti

me

At

2KB/Chip

RAM,

the

maximum

sector

length =

5128

.

Each BUF

transfers

data

in

the

time

division

system.

(2) HOST, BUF

transfer

rate

When

data

are

transferred

between

5"

FXD

and

the

host

,

the

data

are

temporarily

housed

in

the

memory

buffer

register,

which

makes

the

transfer

at

an

optional

rate.

In

multisector

operations,

the

transfer

rate

between

the

host

and

buffer

decides

the

sector

interval (interleave).

(3) DUAL-BUF

When

DUAL

-BUF

is

used

as

HDC, if

the

DMA

transfer

rate

at

the

host

side

is

slower

than

that

of

the

disk,

it

can

be

transferred.

With

multisector

mode

transfers,

a 1

sector

interval-

transfer

can

be

executed

at

different

transfer

rates

from

the

host.

•

lt

can

be

transferred

if

the

DMA

transfer

rate

is

slower

than

that

of

the

disk.

•

The

host's

burden

is

reduced.

•

The

host's

cycle

steal

and

high-priority process

can

interrupt.

• With

multisector

mode,

process dificiency does

not

decline.

(e

.g.) Read Data

(disk~

host)

disk

transfer

rate

5Mbit/s

(1.6Ms/byte)

host

transfer

rate

3.2Ms/byte

SEC

TO

R!

DATA

BUF 0 I

DI

SK

- au

ro

BUF I

S ECTO

R!

DATA

B

UF

O

~

H

OS

T

J

S ECTOR2 DATA

DI S K

_,.

BU

rt

DMA

transfer

time

chart

SEC

TO

RS

DATA

IDI SK

~

BUFO

S ECTOR 2 DATA

BUF I - HOS T

a)

SINGLE

MODE, DISK -

HOST

b)

SINGLE

MEMORY (BUF) -· HOST

C

L<

H

RQ

HLDA

P

W..

S£0

SEC

TOR 4

S ECTO

RB

OATA

BUFO

-~>

HO

S

T

S

EC

TO

R4

D

ATA

DI

SK

-BUFI

ADR

-

STI=~~~~

ADI\0-1

ADA£

IlEA()

WR

ITE

ii="ifilj

c)

SINGLE

MEMORY

(BUF)-

DISK

C

LK

HRQ

HLOA

~m'

-

------~

-+

~~--------+---------~--------~

-----

Al>ft-S

TB=====~st======t=

==>

~~~====

t===

TCAR

ADRO

-1

- 2 -

·-

2-3. Basic Operations General Flow Chart

No

Power~n

or

reset

Command

control

program

format

,

read, write, seek,

etc

.

2-3-1.

Timing

(1) Command Transfer

NDC8

48

-

17

CS

NDC848 - 18

DRD

NDC848 -

19

JJWR

NDC

848-

16

HADR1

NDC84

8-

15

HADRO

___

__

(hardware,

memory,

etc.}

2000

(2)

Magnification

of

the

A Part -

MZ-5600A

.____

_

______.nL...__

_ ___,/L_

I I I I I I I I I

(3) Data

Read

NDC848 -

17

CS

NDC

848-

18

DRD

NDC848 - 19

DWI\

NDC848 - 16

HADR1

I I I I I I I I

1000

2000

I•

'''I

rl:l·· , ,

,,I,,

I'

•I

,,

''I'

I

''

I •

I'

I I I I ••

••••

'

I'

••

' I

NDC848 - 15

HADRO

DRQ

NDC848 - 14

INTR

(4)

Magnification

of

the B Part

0

--

-+--____J

3

0246

I 0271

0296

I•

I I I

,,

I I

[TI,

I I I I ' I I I I I I

••

I I I I I I I I I I I I I I I I I I I I I I I ' I I I I I I I I I I I I I I

5

6

------+-----------------------

----------------------

7

__

_,

____________

_______

___

- 3 -

-

MZ

-

5600A

(5) Data Write

NDC84

8-

17

CS

NDC84

8-

18

DRD

NDC848 -

19

OWR

NDC848 -

16

HADRI

NDC848 -

15

HADRO

DRQ

NDC848 -

14

I

NT

R

(6) Magnification

of

the C Part

2-4. A Prepresentative Command General Flow

Chart

Illegal

command

check

(desi

gnated

interleave, designated

unit address,

etc

.)

- 4 -

2-4-1. Timing

(1) Format

INDEX

AM-

ENABLEO I

AM

-FOUND

READ-G

ATE

3

READ-

DATA

4

WRITE-G

ATES

WRITE-D

ATA

6

(2) Magnificaiton

of

the A Part

2

a 0169

[!Q]

04

19 0669

I I I I I I I I

•[T}

I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I

5

6

7

(3) Magnification

of

the 8 Part

o

--

-+~nL_

__

__________

____

,L_

_

Ill

2

--+-

--------------~

"

~

3--

~--------

----

----------nll

0480

[!Q]

0700

0980

I'

I I I I ' I I I I I I I I

I•

I I I I I I I I I I I I I I I I I I J I I I I

I'

I I I I

11

I

(4) Magnification

of

the

C Part

1

157

!.@]

1407

1

657

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 IN

-S

T

EP

1-80

mS

L

A

cco

rd

i ng l o

ll

ep

rat

e

- 5 -

Seek

1

step

output

3-2.

Read

Operation

-

MZ

-

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

.

b

-

MZ

-

5600A

Check

: illegal

command

, desig-

nated

unit

address, etc.

Sector

address + 1

No

1

step

seek

head =

0,

cylinder =

+1

Yes

- 6 -

READ

INDEX

AM-

ENABLEO I

AM-

FOlJND

READ-GA

TE 3

~

I

~

0000

:

rn

..I··,. ,.... ,...,,

,,,

,,

,,,

,,

,.,

..

,.,,,,,,

D

ATAO

DATA

l

L__A

___j

3

Magnification

of

the

A Part

I I

0

140

[Q]

'

0390

0

64

0

,,.,.,... ,,m,,,,.,,,,,,,,,,,.,,,,,,

..

,,,,,..,,,,

3-3. Write Operation

In

the

data

write

operation,

the

ID

read

is

first

executed

to

search

the

designated

sector

. On finding

the

desired

ID

field,

the

write

gate is

opened

and

writing

is

executed

.

Write

data

are

transferred

from

the

host

to

RAM,

then

from

RAM

to

NDC-840,

where

they

are

transformed

to

serial

data

. As

the

ECC

is

generated

by

the

ECC

Generator,

the

data

are

transformed

into

the

MFM

pattern

and

transferred

.._.,

to

the

disk.

After

completing

the

data

,

the

generated

ECC

(error

correcting

code)

is

transferred

to

the

disk.

No

-

Check: illegal

command,

des-

ignated unit

address, etc.

WR

ITE

I N

DEX

AM

-ENABLEO

AM

-FOUND

RE

AD-GATE

RE

AD-

DATA

WRITE-DATA

6

-

MZ-5600A

0000

~

I

000

2000

,,,

, , r

LrJ

,,,,,,,

r,,

,,

,,,,,,,

' '

,,,,,,,,

'''

I•

•'

,

,,, ,,,

'

l__

A

__j

Magnification

of

the A Part

0

--t----''

I

2

--~---~'----------

3 I

0

11

7

0367 0617

,.,.. ,,,,,,.,m,,.,,,.... ,.,,.,

..

,,,.,

..

,.. ,.,,

..

,,

- 7 -

-

MZ-5600A

4.

DRIVE INTERFACE

4-1. Drive Interface Signals

(1) Control Signal Interface Connector (CN1)

No.

signals Pin

No.

Signals

2 · ··

REDUCED

WRITE

CURRENT

I

HEAD

SELECT

23 1 GND

GND

4

HEAD

SELECT2

2 3

6

8

10

..

12

.

..

...

14 .

..

.

..

16

..

.

..

.

18

.

...

. .

20

..

. .

22

....

..

24 ..

..

. .

26

····

··

28

......

30 ...

...

32 ..

..

84

...

WRITE

GATE

SEEK

COMPLETE

TRACKO

WRITE

FAULT

HEAD

SELECT

2°

RESERVED

HEAD

SELECT

2 1

INDEX

READY

STEP

DRIVE

SELECT

1

DRIVE

SELECT

2

DRIVE

SELECT

3

DRIVE

SELECT

4

DIRECT

ION

IN

5

7

9 GND

11

·

··

···

GND

13

··

·

··

· GND

15 ·

··

· GND

17

··

···

· GND

19

·····

· GND

21

··

···· GND

23

·

····

· GND

25 ··

·· ··

GND

?:l ···

···

GND

29

···

GND

81

·

··

· GND

33

······ GND

1

33

31

2}

'Zl

- - - - - - - • - - - - - -8

~

CN1

connector

designated

No. o o o o

--------------0

o I

0 0 0

0--------------0

0.

84

32

30

28

4 2

(2) Data Signal Interface Connector (CN2)

Pin No. Signals Pin No. Signals

2 GND 1 .

..

DRIVE

SELECTED

4 GND 3

RESERVED

6 GND 5

SPARE

8 GND 7

RESERVED

10

......

SPARE

9

SPARE

12

..

....

GND

11

......

GND

14

...

-MFM

WRITE

DATA

13

..

. +MFM

WRITE

DATA

16

..

GND

15

..

·

..

· GND

18

..

.

-MFM

READ DATA

17

.

..

+MFM

READ

DATA

20

..

GND

CN2 connector

designated

No .

t

19

...

.

..

GND

19

17

15

- - - - - - - 3

ODD

--------o

ODD

--------0

20 1816 - - - - - - - 4 2

4-2. Drive Interface Driver/Receiver

(1) Control Signals

All

the signals

of

the

CN1

connector and drive selected

signals

of

the CN2 connector

are

like the

following

.

I

(driver)

NS7438

or

compatibles

I +SV

I (receiver)

I

t---

6m

max--,

I I

(2) Data Signals

(driver)

AM26LS31

or

:

compatibles

I

flat

cable

or

twisted pair cable

impedance:

100±10.n

-

I

6m

max---'

I

flat

cable

or

twisted pair cable

impedance: 100±10.n

4-3. Drive Interface Timing

(1) Seek Operation (Normal Mode Seek)

(receiver)

AM26L32

or

compatibles

DR

I

VE

SELECT

DIRE

CTION IN

S'fEP

~

I--

IOOu trp

--~X

~

--1

-

eo

..

'"

--1

1-aoo.

,,

~----~

:-;S

E

""

EJ[

;;;-

OCAI=P=-:L-=:ET=E

~

IC,.

1

n>

--i

-O•JoiiN

--:REA_D_G-AT-E

~In>

(2)

Seek

Operation

(Buffer

Mode Seek)

DRIVE SELECT

--l

1--IOOu

trp

DIRECTION IN

=:J~;----------,-'X'----

_

--~;.;__

......

Ouo

!n.

-l

~

lOO•

In>

UlJ-

~

.....,

~--ta-t,.poo~

t--

14u.

'"

S

EU

C<»>PLETE

____

....J

-~·~·~Joi~IN~~L------

-l

t-O•MINI--

-1

l-IDO•

In>

I

READ

GATE.__

___

_

- 8 -

-

----

-

MZ-5600A

4-4. Description

of

the Drive Interface

Signals

4-4-1. Control Signals

(1)

REDUCED

WRITE

CURRENT

(2) HEAD

SELECT

2?-

22

(3)

WRITE GATE

(4)

SEEK

COMPLETE

(5)

TRACKO

(6) WRITE

FALUT

(7) INDEX

(8)

READY

(9)

STEP

(10) DRIVE

SELECT1

- 4

(11)

DIRECTIONIN

(12) DRIVE

4-4-2. Data Signals

(1)

±MFMWRITE

DATA

(2)

±MFM

READ

DATA

CONT

When

this

signal is Low,

the

Write

current

is

reduced.

Low

occursat

inner

cylinder

than

1

28

.

Head address

is

designated

by

a

combination

of

three

binary

bits.

When

this

signal

is

Low,

the

Write

data

are

written

in

the

drive.

When

this

si

gn

al

is Low,

it

indicates

the

Seek

operation

has

been

completed

.

Read/Write

ope

rati

ons

are

executed

only

on

READY

and

this signal

is

Low.

When this sign

al

is

Low, it indicates

the

drive head

is

in

the

outermost

cylinder.

With

the

REZERO

command

,

REV

Seek

is

executed

until

this

signals

is

detected

.

When

the

powe

r

is

on

,

the

controller

does

not

issue

DRDY

until

this

signal

is

detected.

This

indicate

s t

he

re was an

abnormal

condition

in

the

drive.

When

this

signal

is

Low,

the

Read/Write

operations

are

not

executed.

A pulse

output

on

ce

per

rotation,

indicating

the

beginning

of

the

data

track.

This

indicate

s

the

drive has reached

the

normal

rotation

speed.

Seek/Read/W

ri

te

operations

are

executed

only

when

this

signal

is

Low.

This

is

a pulse signal

to

seek

the

head.

Seeking

is

made

one

cylinder

per

one

pulse.

By

selecting

th

e j

umper

plug on

the

board

,

the

following

two

ways

of

seeking

are

made

avai

la

ble.

1. Normal

mode

Seek

: Seeking

is

made

per

every pulse.

2. Buffer

mode

Seek: High-

speed

seeking

is

done

by

the

high-speed pulse.

With

this

signa

l,

several drives

connected

to

the

controller

are

selected

.

For

this

con

tr

o

ll

er, a

maximum

of

two

drives are

connectable

.

This signal

is

k

ep

t High

and

in

the

De

-

Select

condition

except

in

Seek/Read/

Write

operat

ions.

---

This signal,

wh

ich designates

the

head seeking

direction

has:,

forward

(inward)

direction

at

Low;

reverse

(outward)

direction

at

High;

A signal

to

indicate

the

drive

designated

by

the

Drive

Select

1 - 4

is

selected

.

This

is

a

data

signal

to

write

in

the

drive.

lt

is

sent

as a differential signal.

This

is

a

data

signal

to

read

from

the

drive.

lt

is

sent

as

a

differential

signal.

IN

DEX

----!

'-------....,.,...-

---

----,----------.1

Sector

00

Sector

01

l

•t

aector

,-,-~--~=;~==~==

~~

~~~;===~~----'~~~

~~

___l____..l._~

__L____._l__l(

IGm I (

Track

format

{Fo

i1'N

t opereti

on

)

1

0p

t

ione

l~

:

DR

IT E S E L

HEAD

SEL

WR

I T E O A

TE

{W

rite

o~t

io

n

)

DRIVE

SEL

BEAD

SEL

'

--f

.._O

..

(l

UN

)

!i

--t

1-&0

u

•(lO

N)

--t

t-

50

u•

OH

N)

READ GA

TE

~~+

:

____

__J

WR

I

TE

OA

TE

__

-4-'--Tt---

----,

I

Reed

operat

io

n)

D

RI

VE S

EL

---,

:

-t

t-

Oua

,

(M

J

N)

IIE

AD

SEL

~

-+1

,._

5

0u

•(

W:IN

)

8

0-..

(MIN)

READ GATE

~

L..;..:

____

__.J

n

L.

__

_

..JnL

_ _ _

-t

;..._

Optional

---t

1-

80

Ul

(

)f]N

)

- 9 -

Sharp MZ1F10 Manual de usuario

Manuales populares de Hardware de computadora de otras marcas