Sharp Mz-8bi03 User manual

)

SHARP

SERVICE

MANUAL

PDSMX81013-MZ

ft'

In

Ill.

In

RS-232C

Serial Interface Card

MZ-SBI03

, "

•.••

"

......

,

....

~

..

~I

.......

GP-IB Interface Card

MZ-SBI04

FEATURES

MZ·8BI03

• A

serial

interface card

for

MZ·80B. capable

of

converting parallel 8-bits data

to

serial data

to

transmit

and

receive.

• Integrating

two

channeis

of

interface conforming

to

RS·232C (JIS·C·6361)

into

one board.

• Employment

of

Z·80SI0/0.

one

of

Z·80 famiiy, enabling

to

deal

with

various interrupts.

MZ·8BI04

• GP·IB interface card

for

MZ·80B, capable

of

freely controlling measuring instrument groups

conforming

to

I

EC

standards

~

~E-488

and enabling

low

cost, automatic measuring system.

•

Capable

of

programming

by

improved BASIC.

..

~~

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

..

SHARP

CORPORATION

~-------Contents--------

MZ·8BI03

Specifications.................................................

1

General information

.................................•...•.......

2

Description

of

circuit

...............................•............

3

Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . • . .

..

8

Test program

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

10

PWB

and

circuit

diagram

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

15

MZ-BBI04 Specifications

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

18

Description

of

circuit

................................•....•••...•

19

Troubleshooting

..............................•.....•........•..

23

PWB

and

circuit

diagram

........................•..•.•....•.......

27

Packing method

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

'

................•.•....•...••....

30

Replacement parts list

...........................................•.....••..

31

MZ:..8BI03:.SPECIFICATIONS

,~,~,

Item

Communication me'thod

Standard

Control

LSI

Number

of

channels

20mA current loop

Baud

rate

Number

of

baud

rates

Character length

Parity

bit

Stop

bit

Mode

Interrupt

Port

address

Operating temperature

Storage temperature

Specifications

Asynchronous

In compliance

with

EIA

RS·232C

Z·80SIO/0

2 (Channel A and Channel B)

Changeover

is

allowed

for

orie channel (Channel

B)

Can

be

set

independently

for

the

two

channels (Manual setting using switch)

10(75,110,

150,300,600,

1200,

1800,2400,4800,

9600 baud)

5,

6, 7

or

8 bits (Selection

by

software)

Odd, none

or

even

.

1,

1

Y.

or

2

Either terminal mode

or

modem mode

can

be

selected

for

ellch channel

(through the

use

of

jumper chip).

Z·80 vector

interrupt

can

be

used.

,

..

Manual setting

with

switch

O°C-

50°C

-25°C-

80°C

(Note) The above·mentioned specifications may be changed ir, the future

for

improvement

of

the product.

<.

f

" '

r

"

)

• Introduction

Ther~

are

two

methods

of

data communication between

computer

and external equipment: S-bit parallel and

bit serial.

The serial interface card MZ-SBI03 (hereinafter referred

to

as "interface

~ard")

permits data communication by the

bit serial method. This interface card

is

manufactured in accordance with EIA RS-232C (the Electronic Industries

Association RS-232t::), and used for data communication with

other

equipment having interface based

on

RS-232C.

•

Functions

of

this

interface

card

The interface card has

the

following functions.

1.

One card has

two

channels, each

of

which

is

capable

of

transmitting/receiving data independently.

2.

One

of

the

ten baud rates can be selected by operating

the

switch

on

the

card. Baud rates can be set independently

for

the

two

channels.

3.

Output

connector signals

to

external equipment can be

in

either terminal mode

or

modem mode through the

operation

of

the

jumper chip.

4. This interface card can be used as 20mA current loop for one channel.

•

Applications

Equipped with

the

above-mentioned functions,

the

interface card has a variety

of

applications. Some applications

of

this very versatile serial interface card are shown below.

1.

Data communication between computers on telephone line via acoustic couplers

2. Printer

3. Plotter

4. Digitizer

5. Color display

6.

Card reader

7. Magnetic tape equipment

.

\

•

2

)

.~

)

•

n

3::

~

N

n

c

~

;+

I

D

....

~

TxDB

./

Current

~

0

ex»

RS-232CI Loop

~

&.

e

ca

RxDB Drive

~

Current Loop Cl)

Select 3 0

DTRB

CA)

Co"",,'

••

' q

-)

Mode Channel B

Select

Connector

C

(J-2) v m

RS-232C

~

en

~

Drive / 0

Rml

I

..

CTSB

:D

..

-

DCDB

I (J-1) "

....

-

H~~'Cb

0

furt

H Z

Add'~~

Address -

Bus Select TxDA .

',"~

.

:-

W 0

Circuit

..

RxDA "

RS-232C Mode Channel A • '.""',.1-,.

RTSA Drive Select

Connector

0

-

CTSA

DTRA I (J-3)

I:D

0

DCDA

c:

-

+5V~

['m

~

Power Chlnnel A

.~;~";

Supply BR2 Baud Rate Setting

(SW-21

Blud

Rate

t',

Circuit

v..;..#

-12V

Oscillltion

f~";

Circuit

Channel B

.:\

BR1

14

Baud Rate Setting

(SW-31

.

'C

r·._

---

• Construction

of

Circuit

The

serial

interface

card

consists

?f

the following six blocks.

• Block 1 Hybrid

IC

circuit

D'

HOOO2PA

01

D.

D'

.

..,.

01

D'

00

IhO'

Cl

It"

•

1111

.1JII1i

rntI

• •

In

1t11'T

CTITI

A'

r

AD

'1'

'10

.10

DTItI

..

rnn

• RT1il

DCDI

••

.,.0

....

N.C

IY"CI

..

N.C

,.DA

H

••

0&

..

It'l.

CITA

DT

••

DCD"

+.v

.,,,oYA

'''''CA

) IND

U. U.

•

••

• Block Diagram

of

Hybrid IC

0,

D.

Data BUI

0,

Driver

<:>

~

..

0 Channel A

Read/Writa

.Reglsters

D.

0,

) O2

D.

Do

lr

Bus

fG:

Intetnal Bus

Interface

Logic U U

D Channel B

Internal Read/Write

Control

Registers

Logic

IORO

RD

Ml

CE

RESET

~

A.

AD

ExlNT

~

I!"terrupt

Control

"-r--

Logic

IEI

IEO

)

I

BRl

BR2

4

• •

.

..,

.

....

"TI'

C'I'I

DT.'

DCOI

'IDA

'hO&

ItTI"

CSTA

0'"''

DCO'

~

Channel A

Data

&

Control

Channel B

Data

&

Control

TxDA

RxDA

RTSA

CTSA

DTRA

DCDA

W/RDYA

SYNCA

TxDB

RxDB

RTSB

CTSB

DTRB

DCDB

W/RDYB

SYNCA

• Block 2 Port

Address

Select Circuit

147

A.

A'

144

145

142

SW-I

LS2&'h2

le4

5.51\"6

RA I

+5V

..

I.

I

e4

I

e4

le4

le5

le

5

CE

.SV

• Block 3

Baud

Rate

Oscillation

and

Setting Circuit

R~OK

10

REiE'f

.SV'-~""'+'"

B

II

I

.••

JI

....

+'V

___

---='.::j4

..

IC

I

MCI4411

ICl

RH·iX0297PAZZ

(MC144ll)

ASSIGNMENT

(Top View)

24

2

23

3 22

4

21

20

6 19

18

8 17

9 16

10 15

11

14

12 13

Rite

Sllect

A

23

RI.I

Select 8

22

Cryltlljn 21

• " Cryltl1o..n:

20

R.Mt

10

sw-z

IBI

5

IC3,4

RH·iX0190PAZZ

(SN74LS266N)

ASSIGNMENT

(Top View)

1A2

BLOCK DIAGRAM

I

.1

Divide...

Rill

Select

LotiC

(

c

Fl

11

f2

2 F3

16 F4

3 F5

15

f6

4 F7

5 F8

7 F9

e

Fl0

8

Fll

14

f12

13

FI3

C

11

F14

18 F16

19 F16

)

• Block 4 ,

Driver, Jumper, Switch and Connector Circuit

./-1

L..

__

~

...

~.sf

1

+IIV"

TIDI

____

-.J

Ic2

, 751

..

"

It.

01

1

,....---...,

'<1

It.~

t

_000

~-iI--+-...:cO)(.~c:

I

..

o~

ItTlI

----=.~~..,..I'-----

...

-Y.:,

CTII

I

i

.~~~.;..-.

__

...

I

C1

.

IC'

l··o'

--,

-~

.,.

-

.

..

'.0

••

2.'111

+1

T.

6

+IIV

OTIt~-9-~'

•

'--r-...J

,--

-

OTltl

____

-.I

'

51

on

••

u •

-...,

-IIV

IC2

..

--'

..

'OO

DCDI

------c~1<

..

-'1----

...

~

"I'A

.10

100

+IZV

Cl

./-1

I··""

T

.DA

__

-:..,:

...

-

....

-IIV

r!>

CH"NNEL-I

~

CHANNEL-A

:.

~~II

I

r~-M

'L""1

ICI

,..

-

:...,---------------

....

7511

..

21 , '

~

L._,

__

•

It.OA

----_.....c~;.c:-

...

.10

___

...

•

I

ca.

ItTIA

__

--It!.l~

:I;

••

01'

~C

7

I"

-

'1--

....

'

___________

~~

:

~t::f-j------------------~@

I

~i~IIA

4r~1

:

~'.

L._

,

__

•

I

,.

c

••

DTltA

___

.~.~II::

'"

..

01'

~

'[~

:

~'is~1A

'L_

j==~...,-,---------------r®

8

DCDA

-----....:.·OM~.

-

~

Iml'

CSTA

• IC2, 8 RH·iX0305PAZZ

(SN75189A) CONT·

ROL

•

IC7,8

RH·iX0085PAZZ

(SN75188N)

PIN ASSIGNMENT

(Top View)

4A

4

4V

1

11

5

PiN ASSIGNMENT

(Top View)

Vcc+

48

1

38

1A

1

1V

CONT·

ROL

2A

2

2V

GND

CONT·

Vcc-

1A 1V

2A

28

2V

GND

ROL

6

• Block 5

r .

• Block 6

Power Supply Circuit

+

IV

ce

I~/.

aND

IC13 DUNTK0064PAZZ

(12N10K1)

LI

eH'"

~

LA1---V

Bus

Interface Circuit

.

..

+IIV

aND

cia

-IIV

U~

GND

,

1.

GND

2.

Vi"

3. V out

4.

N.C

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

7

c

(

c

The

serial

interface card consists

of

six blocks and,

if

each

block functions normally, a faulty operation

is

caused

by

an

external factor (Ex: program, the counterpart machine, etc.)•

• Circuit Blocks and Check

of

Behavior

..

.

Block Circuit Behavior

1 Hybrid Z-80SIO

is

built

in

and

te~t

the function by the test program.

2 Port

address

Check

if

an

address

code

set

by

SW-1

(DIP switch)

is

output.

selector·

If

the

output

does

not

agree,

wired-or

output

is

a

low

level.

3 Borate Check

if

MC14411

is

outputting.

oscillation

and

setting

r--

Frequencies

are

as

follows:

F1

.. 153.6 KHz F8 • 9,600 Hz

F3

..

76.8 KHz F9 .. 4,800 Hz

F5

..

38.4 KHz

F11

.. 2,400 Hz

F6

..

28.8 KHz

F13·

1,758.8

Hz

F7

..

19.2 KHz

F14·

1,200

Hz

Be

sure

that

two

or

more switches

of

SW-2

and

SW-3

(DIP switch)

are

not

turned

on. Tolerable deviations

are

±0.1%

for

each

frequency.

In measurement, consider that the waveform

of

MC14411

varies

according

to

the load capacity

because

MC14411

is

CMOS.

4 Drivers, Check the status

of

input

signal.

jumpers, •

Output

of

75188 } High level:

-10V

to

....

12V -

switches and Input

of

75189 Low level: 10V

to

12V

connectors •

Input

of

75188 }

Ci9h:

OV

to

0.8V)

TTL

level

Output

of

75189 Low: 2.5V

to

5V

•

If

reset,

the

output

terminal

of

the hybrid

IC

is

in the high

level

(high

level

of

TTL

level).

5 Power supply

Be

sure

that the voltage

is

+5V ±

5%.

•

5V

line

Be

sure

that the

oulput

of

DC-DC converter

is:

• +12V line +12V ±lO%,

-12V

±10% 0

•

-12V

line

6

Bus

interface Since there

is

no circuit part, examine

if

the

signal

is

input

to

the board

normally.

The hybrid IC

is

not

actuated

unless

the clock signal

is

applied

to

the

q,

terminal

of

the hybrid I

C.

8

• Faulty

symptoms

and

connected

circuit

blocks

Circuit blocks Faulty symptoms Circuit blocks Faulty 'symptoms

1 2 3 4 5 6

and

probable

causes

1 2 3 4 5 6

and

probable

causes

c

0 0 0 0 o Transmission buffer 0 0 o +12V or

-12V

line deviates

is

not

empty. over ±10%.

o Control

does

not

(Causes)

return from the o Faulty TL497AC.

transmission routine o Faulty 12N10K1.

in test program run. o Short circuited load.

(Causes)

o Short circuited electrolytic

o Hybrid

IC

doesn't capacitor.

function normally. •Other.

o!p

clock

is

inoperative.

o Wrong port

address

selection.

•Abnormal

5V

power

supply.

o

Othe~.

(

0 0 0 o Error

message

is

gener-

0

,0

Borate oscillator

does

not

ated

from

Z·80SIO • output.

(parity error, overrun

(Causes)

error, framing error, o Faulty MC14411.

etc.) o Faultycrystal.

(Causes)

o Two or more

dip

switches

o Wrong borate setting.

(SW-2,

SW-3)

turned

on.

o Abnormal borate o Faulty borate clock input

. oscillator. circuit

of

hybrid

IC.

o Wrong jumper

set-

o Other. (

ting (J-1,J-2

and

J-3)

o Abnormal +12V

or

-12V

line.

o Faulty connector.

o Faulty counterpart

machine.

o Other.

0 0 0 0 • •Signal

is

not input. c

-.

o Control

does

not return

from input routine in

test program run.

(Causes)

o Wrong borate setting.

o Abnormal borate

oscillator.

o Abnormal +12V

or

-12V

line.

o Wrong jumper setting

(J-1,

J-2

and

J-3) ,

o Faulty connector.

o Faulty opel'1ltion

of

hybrid

IC.

o FaUlty counterpart ,

machine. (

• Faulty driver

IC.

o Other.

-

..

0"

shows

a related circuit.

..

0"

shows

a related circuit.

9

MZ-SBI03 TEST

PROGRAM

• Self-diagnosis program

Let

~s

consider a program

for

self-diagnosis

of

this interface card and assume

that

data

are transmitted

from Channel A are reCeived by Channel

A.

For

channel

B,

similar communication system shall

be

adopted. Self·

diagnosis

of

the

interface card can be made

by

examining whether

the

reoei.e

data

and transmit

data

are

the

same

at

the time

of

transmission/receiving.

• Setting jumper blocks

on

the

card

For'the

self-diagnosis as mentioned above,

set

the

jumper blocks

on

the

card as follows.

J-l J-2 J-3

M T C R C M T

0 0 0 0

I,

0 0 0 0 0 0

0 0 0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 0 0

,I

0

0 0 0 0 0 0 0 0 0 0

0 0 0 0 0 0···1 0

0 0 0 0 0

0-

0

III

Since

port

addresses

BOH,

B'

H, B2H and B3H are used

in

the

program, set

the

switch SW-'

in

the

following (factory

setting).

•

Switch segment 6 5 , 4 3 2 1

Switch position

OFF

ON

OFF

ON

Set the switch for baud rate setting as desired. After setting each mode, install the card

in

MZ-aOB. On this occa-

sion, signal cable needs

not

to

be connected.

L_'

______

,

10

•

Flow

Chart

of

Self-diagnosis

Program

Start testing Channel

A.

Stop

the

program when an error occurs. If Channel A

is

found normal, test Channel Bthen.

Set Z80-SIO

mode

Start checking

Channel A Start checking

Channel B

"

Output test data

Output

tast data

from Channel A from Channel B

Contantl of arror Contents

or

error

displayed displayed

No

....

.---<

11

Channel B

is

normal

------

_

...

_---

-------

..

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

...

-----

•

Program

by BASIC

language

.,

Now, let

us

draw up

th~

program described

in

the above·mentioned flow chart, using tBASIC languages. The

program list

is

shown later.

In

the

BASIC

program,

the

routine

to

control the interface card

is

composed

of

machine language. The machine

language data are w.ritten into the memory by

POKE

statement and the routine

is

called by

USR

statement. The

routine

is

made by programming statement Nos. 1000 through 1990.

..

.

Statement

Nos.

1080

--

1160

...........

Parameters

Clock rate

Stop bit

Parity

Odd/even

of

parity

Transmit/receive character

Auto enable

:·X

16

2 bits

Present

Even

8 bits

Set

Statement Nos.

1180""

1370

.•.........

Mode setting routine.

Statement Nos. 1550

--

1610

...........

Channel A input routine.

Input data are stored

in

Address CHAR.

Error flags are stored

in

Address

INER@.

Statement Nos. 1630

--

1740

...........

Channel B input routine.

Input data are stored

in

Address CAHR.

Error flags are stored

in

Address

INER@.

Statement Nos. 1780

--

1840

...........

Channel A

output

routine.

Transmit data are stored

in

Address CHAR.

Statement

Nos.

1860

--

1930

...........

Channel B

output

routine.

Transmit data are stored

in

Address CHAR.

Statement Nos. 1950

--

1990

...........

Writes machine language data

in

the memory.

tBASIC Version: SB-6510, SB-5510

•

,

17

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

13

)

1630

1640

1650

1660

1670

1680

1690

1700

1710

1720

1730

1740

1750

1760

1770

1780

1790

1800

1810

1820

1830

1840

18S0

1860

1870

1880

1890

1900

1910

1920

1930

1940

1950

1960

1965

1970

1980

1990

3000

3010

3020

3030

3040

30S0

3060

3070

3080

3090

3100

3110

3120

3130

3140

3150

3160

3170

3180

3190

3200

3210

3220

3230

3240

3250

3260

REM

CH9IN

REM

ENT

IN

A,

(CH9CT>

R'RCA

.JR

LD

OUT

IN

AND

LD

IN

LD

RET

NC,CH9IN

A,I

(CHBCT>

, A

A,(CHBCT)

70H

(INER@),A

A'(

CHBDT>

(C.HAR)

, A

REM

***

OUTPUT

ROUTINE

***

REM

CHAOUT

ENT

REM

IN

REM

9IT

REM

JR

REM

LD

REM

OUT

REM

RET

REM

CH90UT

ENT

REM

IN

REM

BIT

REM

JR

REM

LD

REM

OUT

REM

RET

REM

END

REM

A,

(CHACT>

2,A

Z,CHAOUT

A,(CHAR)

(CHADT>

, A

A,

(CHBCT>

2,A

Z,CHBOUT

A,(CHAR)

(CHBDT>

, A

; [

adr.='F04A

]

:DATA

DB,93

:DATA

OF

:DATA

30,FB

IDATA

3E,01

:DATA

D3,B3

:DATA

D9,B3

:DATA

E6,70

••

:DATA

32,32',FO

IDATA

D9,B2 '

:DATA

32,33,FO

:DATA

C9

[

adr.=SF060

]

IDATA

DB,91

:DATA

CB,S7

IDATA

28,FA

IDATA

3A,33,FO

:DATA

D3,BO

IDATA

C9

I [

adr

....

F06C ]

:DATA

DB,B3

:DATA

CB,S7

:DATA

28,FA

:DATA

3A,33,FO

:DATA

D3,B2

IDATA

C9

:DATA

END

DIM

X(30)ILIMIT

.FOOO

IP-15*4096

FOR

JaO

TO

9:X(J)-JINEXTIFOR

J-O

TO

SIX(17+J)-J+I0INEXT

PRINT"SIF

SUBROUTIN

LOADING"

READ

X'IIF

X'-"END"

THEN

3000

J-16*X(ASC(MIO.(X.,I,I))-48)+X(ASC(MID.(I',2,1))-48)

POKE

P,JIP=P+IIGOTO 1970

REM

**************************

REM

* *

REM

*

MAIN

PROGRAM

*

REM

* *

REM

**************************

REM

USR(.F009)IREM mod.

s.t

~,

PRINTIPRINT:PRINT

"*****

TEST

PROGRAM

(S.ri~l

I/F

M2-8BI03)

PRINT

"Chann.l

A

TEST"

FOR

1-0

TO

2SS

POKE

.F033,I

:USR(.F060)IPOKE

.F033,O

:

REM

chann.l-A

output

USR(.F034)IA=PEEK(SF033):ER-PEEK(SF032) I

REM

chann.l-A

input

IF

ER<>O

THEN

PRINT"COMMUNICATION

ER

-";ERISTOP

IF

I<>A

THEN

PRINT"COMPARA

ER":STOP

PRINT"."I:NEXT

PRINT"***

OK

***"

PRINT

PRINT"Chann.1 B

TEST"

FOR

1-0

TO

255

POKE

$F033,I:USR(.F06C):POKE

.F033,O

USR(.F04A):A=PEEK(.F033):ER=PEEK(SF032)

IF

ER<>O

THEN

PRINT

"COMMUNICATION

ER

'"'

IF

I<>A

THEN

PRINT

"COMPARA

ER"ISTOP

PRINT"'";

:NEXT

PRINT"***

OK

***"

END

14

:

REM

chann.I-9

output

:

REM

chann.l-B

input

";ERISTOP

***** "

'"

1

. ~

2

•

3

10

11

•

A B c o E F G

•

Z-SBI03

BAND

IT

DIA

Notes:

The

printed

wiring

board

circuit

diagram are

subject

to

change

without

prior notice.

• Printed Wiring Board

SERIAL

TERFA

•

••

•

15

•

• •

I

Perspective'View

--"

Parts-fitted face

-,

'

Opposite

side

H

• \

+ .

CD

-

o

•

A B c D

1 • Circuit

Diagram

.,

..

2

AS

••

3

AS

..

4

5 •

W-,

"'

.

..

.

ID

6

..

7 ''',

.."

B

9

••

NO

."UORAn

.!9.

• •

00

•

..

lOO

,

24

00

,

1.0

0

,

1200

• ,

..

,0 • ,

••

•

".

•

".

!L

"

16

E F G

.,

,"

," .,

'"

.,

••

•

'"

FlnlH

13Kx;S

...

hiNT

+ ,

I

to.

H

JORQ

•

..

,

I

'C

5

HOOQ2PA

,~.

,,~

011

RTS 8

CTSTI

OT

RII

DeDI

W/ROT8

SYNC

B

T

.OA

I

hOA

IIlT,A

eSTA

OTA

...

DC

OA

W/ROYA

SYNCA

G

••

...

8.

- 3

,AI

J K L M N o p

H -, "

,-,

t~

...

-r-J

+12'"

~

"

I , -

Z.

-

--

I

" , ' 0

~-

I

".

•

I

7"88

• "

I

~-

-

, •

..

~

I

u.

I

-

.,

--

r

.,

c

__

--

•

,

OTI'I • .

,--

-

I 0

~

-~

"

~-

.,.

- 1

2V

"

'"

",

."

(ID

'" • ®

CHANN~L-'

H CHANNEL-A

,,

"

~

r

"

I

~

I

•

-::r-:--------::::

~

"

~-

•

MZ-BBI03

17

.

Item Specifications

Interface standard

In

accordance with IEC Standard/TC66.

Interface funcion Functions executable

in

MZ-,801rv"ersion-up BASIC language.

, Function

Subset

Description

SH

SHl

All

functions

AH

AH1

All

functions

T

T6

Basic talker

Serial poll

Cancellation of talker by

MLA

L

L.

Basic listener

Cancellation

of

listener by MTA

C Cl System controller

C2 IFC transmit. controller

in

charge

C3 REN transmit

C.

Response

to

SRQ

C6 Interface message transmit

Controller receive

Controller pass

Controll pass

to

itself

Parallel poll

SR

SRO

No function

RL

RLO

No function

PP

PPO

No function

OT

OTO

No function

DC

OCO

No function

Output

connector

(Male type)

connector

in

compliance with IEC Standard

•

,

Operating temperature 6°C"'"

35°C

Storage temperature

OOC"'"

50°C

Power source

DC

5V (supplied from MZ-80B)

Reference

The following specifications are

"reference"

specifications. since difference

is

caused by cable quality. connector

connection. noise and

other

environmental conditions.

1.

Number

of

Instruments per

system

2. Full length

of

cable

per

system

15

max. including MZ-80B

20m

or

less

However. length per instrument shall be

about

2m. If the number

of

instru-

ments exceed

11

in

one system. cables

of

2m

or

less shall be used between

instruments so

that

the

full length will be 20m

or

less.

(Note) The above-mentioned specifications may be changed in

the

future for improvement

of

the product.

18

IMZ-SBI04 DESCRIPTION OF CIRCUIT :

..

J

r--

• Block Diagram

MZ·80B

bus line

This interface circuit consists

of

a hybrid

le

(H0001 PAl

for

GP·IB, Z·80AP10

and

various logics

to

connect them

to

the extension I/O

of

MZ·80B.

Some

of

included logics

are

a waiting logic

and

a data buffer control logic

so

that the mode 2 interrupt

of

Z·80A

can

be

utilized by Z·80API0.

Data bus

1-

lE

M

A

0-

1----

0-

A7 8

0

I

0-

A

W

R_

.

1--

M

BUS4>

IORa

EXWAIT

T

lE0

I

T

M

RESE

-

8

Buffer

control

logic

Address

decod·

ing logic

Waiting logic

•

Reset circuit

r---

....

DB7

tU

...

I

...

8

~

DBO

Dltl

b

ID

us

8

R1

W1

I--

W2 3

I-

HIC

Hind

07

Mlnlgemlnt

L...,.

I line line

GP·IB

sheke

DO

--

CE

5

TACS 5

Z·80A

Mlnage

PlO LACS line

-

ment

MI

8 CMAC NBA

Command

ACCS NBAW

-INT reed

IEO

l -IEI

iEi-

Timing circuit

MZ-8BI04 Block Diagram

.

..

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

19

I

• Description

of

Hybrid

le

RMPTHOO01PAZZ

for

GP·IB,

The hybrid

IC

mounted, on the GP·IB interface MZ·8BI04

of

MZ·80B integrates the hand

shake

logic,

bus

driver/

receiver, etc. which

are

the proper circuits

of

GP·IB circuit,

into

one

package.

By connecting this HIC (hybrid IC)

to

the I/O ports

of

an

ordinary microcomputer, the functions

of

T6,

4,

SH

1

and

AHI

and

the inputting

and

CJutputting

of

the

l1'Ianagement

line

and

data line

are

enabled.

Data

line (

Internal register (

read/write

pulse

DB,

I

DB.

Wl

R1

W2

I

nput

to

hand

shaka

line

and

management

line

OAV(R)

NRFO(R)

NOAC(R)

EOUR)

ATN(R)

SRO(R)

IFC(R)

REN(R)

Management ATN(O)

line

output

SRO(O)

[

EOHO)

IFC(O)

Enabling

manage.

REN(O)

ment

lines

other

ENABLE

than

EOI

Reporting

of

[T

ACS

Internal logic LACS

status

SPAS

Reset

.ignal CLR

Waiting

time

~

NBA

setting

NBAW

Waiting

time

~

ACCS

setting CMAC

• Block Diagram

of

Hybrid

le'

27

-~-

?g

19

16

2

3

4

lIE

5

-~-

7

-~

9

11

2

13

4

15

10

49

50

51

47

55

52

53

54

D7

De

D5

D4

D3

D2

D1

DO

DATA

LINE

DAV

R

NRFOR

NDACR

EOI

R

ATN

R

SRQ

R

IFC

R

REN

R

~§~

W2

GND(E)

..

.

30

HOOO1PA

31

32

33

34

35

36

37

3B

39

40

41

43

44

45

46

42

11

1171561~2~48

Vcc GNO

DATA

PORT

t--.-J

ClR

~~~~~~i~~~~~~~J

CMAC

Aces

NB':

LACS

TACS

SPAS

EOI

D

ATND

SROD

IFC

D

RENO

20

Driver

/Receiver

0108

0107

0106

0105

0104

0103

0102

0101

SRO

IFC

REN

ATN

OAV

NRFO

NOAC

EOI

SG

GP·IB line

Signal groun"d

0108

0107

0106

0105

0104

0103

0102

0101

rr-

.......

==-=-

......

slgnal

GND

DAV

NRFD

NDAC

EOI

ATN

SRQ

IFC

REN

Sharp MZ-8BI03 User manual

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