Dynabyte 5505 Manuale utente

5505

Computer Unit

Technical Manual

1.

2.

3.

4.

5.

6.

7.

GENERAL

Features.

PHYSICAL

DESCRIPTION

•

Front

Panel

Rear Panel

Card

Cage

--

S-IOO

Bus.

S-IOO

Bus

Cards •

Power Supply

fvt:>dule

•

Diskette

Drive.

Winchester

Drive.

FUNCTIONAL

DESCRIPTION

•

SPECIFICATIONS

•

5505

CCJt1PUTER

MAINTENANCE

TABLE

OF

CONTENTS

OPERATION

AND

INSTALLATION

•

Unpacking

Ac

Line •

Options •

Set

Up and Turn

On.

MAINTENANCE.

Customer Support

Service.

Repacking and Returning

Material.

Diagnostics

•

Fault

Location.

Power Supply

fvt:>dule

Voltages and Adjustment

Removing

Assemblies •

REFERENCES

•

S-100

Bus

•

.,

Schematics and Replaceable

Parts.

OEM

EquiJ;ment •

DYNABYTE

-Page 1

3

6

7

.10

.11

.14

.15

.21

.27

.28

.35

.37

.38

.39

.44

5505

Technical

Manual 404512

ILLUSTRATIONS

. ... • 5

Table 1-1

--

5505 Computer, Models

•••

Figure

2-1

--

5505 Computer,

Front

Panel . . . . . . . . • 5

Table 2-1

--

5505 Computer,

Front

Panel

Controls

and

Indicators.

• • • • 6

Figure

2-2

--

5505 Computer, Rear

Panel.

• • • • • • • • • • • • 8

Table 2-2

--

5505 Computer, Rear Panel

Controls

and

Connectors.

• 8

Table 2-3

--

5505 Computer,

Interior

Major Assemblies

•••

Figure

3-1

--

5505 Computer

Functional

Block Diagram •

Table 4-1

--

5505 Computer

Functional

Specifications

• ..

Figure

5-1

--

Central

Processing

Unit,

Option Switch

Settings.

Figure

5-2

--

641<

Random

Access

Memory,

Option Switch

Settings

•

.13

.17

.22

• .31

•••

32

Figure

5-3

--

Disk

Controller,

Option Switch

Settings

••••••

.. .33

.34

.37

Figure

5-4

--

Auxiliary

Disk

Controller,

Option Switch

Settings

••

Figure

6-1

--

Dynabyte

Identification

Plate.

• • • • • • • • •

Figure

6-2

--

Power Supply

Module

Voltage

Test

Points,

BS1

••••

Table 6-1

--

Troubleshooting

Chart • • • • • • •

Table 7-1

--

Dynabyte 8-100

Bus

Assignments. • •

Figure

7-1

--

5505 Computer

Chassis

Wiring Diagram • •

Table 7-2 --. 5505 Computer Replaceable

Parts

List.

DYNABYTE

-Page 2

..

. . ..

.. •

••

38

•••••

42

•

.45

•

.51

.52

5505

Technical

Manual

404512

1.

GENERAL

1.01

This

manual

provides

a

physical

and

functional

description

and

the

operating

theory

necessary

for

effective

installation

and

field

service

of

the

5505 Computer.

Features

1.02

The

5505 Computer,

illustrated

on

the

title

page,

is

supplied

indivi-

dually

or

as

a system component

to

a

larger

Dynabyte computer system.

Its

features

include

the

following:

• Z-80 microprocessor

operating

at

4

MHz.

•

Two

serial,

software-programmable

110

to

76,800 baud

ports.

Each

of

the

ports'

data

lines

may

be

configured

to

an

RS-232C

level

or

20

rnA

current

loop

data

communication

line

interface.

•

One

parallel

port

wi

th

full

handshaking

logic.

• Double Density

Diskette

Controller.

•

Mini~inchester

Controller.

•

Built-in

Diskette

Drive

in

single-sided

or

double-sided

configuration

(see Table

1-1).

•

Built-in

Mini~inchester

Drive (see Table

1-1).

•

Ten

internal

timers.

•

Sixteen

priortized

vectored

interrupts.

• A

real-time

clock.

•

64K

of

Random

Access

Memory.

Optional

memory

to

400K

bytes

can

also

be provided

with

multiple

memory

cards.

•

The

power

supply

module

features

pre

regulation

to

minimize

operational

problems from

brown

outs

and

line

voltage

surges.

•

Efficient

cooling

of

the

5505

S-IOO

cards

and power

supply

is

assured

by a

4-5/8

inch

axial

fan

furnishing

air

through

the

chassis

and

exhausted

out

through

the

rear

panel.

•

The

backplane

is

shielded

and

fully

socketed

for

12

S-IOO

card

positions.

• Heavy'

duty

metal

construction.

•

The

front

panel

switches

POWER

and

RESET-HALT

are

illuminated.

• A

line

fuse

is

provided

for

ac

line

protection.

DYNABYTE

-Page 3

5505

Technical

Manual

404512

•

Each

internal

subassembly

is

modular and

is

unit-replaceable

for

ease

in

servicing.

• Each

5505

carries

a lBO-day

warranty

on

parts

and

labor

from

the

date

of

shipment from Dynabyte.

• Each

5505

is

burned

in

for

a

minimum

of

72

hours.

DYNABYTE

-Page

4

5505

Technical

Manual 404512

Table

1-1

--

5505

~omputer,

Models

5505 -Al 5505 -

Bl

5505 -

Cl

Floppy Disk

Drive

Surfaces

1 2 2

Unfonnatted

Capacity

500K

1000K

Fonnatted

Capacity

315K

655K

Winchester Hard Disk

Drive

Surfaces

4 4 6

Unfonnatted

Capacity

6.

4MB

10.

67MB

16MB

Formatted

Capacity

5.

32MB

a.9MB

13.4MB

1.03

Dynabyte

maintains

hardware and

software

compatibility

with

Dynabyte

S-100

.cards

used

in

the

Dynabyte

S-IOO

Bus

only.

S-IOO

I/O

cards,

e.g.,

modems,

clocks,

and

parallel

ports

from

other

manufacturers

will

be

compatible

with

the

Dynabyte S-100

Bus

in

most

cases.

Contact

Dynabyte

for

specific

applications.

4

Figure

2-1

--

5505' Computer,

Front

Panel

807129

DYNABYTE

-Page 5

5505

Technical

Manual 404512

Key

1

2

3

4

Table 2-1

--

5505 Computer,

Front

Panel

Controls

and

Indicators

Element

POWER

ON

OFF

SWitch and

Indicator

RESET

Switch and

HALT

Indicator

Diskette

Drive

Diskette

Drive

Select

Indicator

Function

Applies

the

ac

line

to

the

5505 Computer and

the

ac

power

receptacle

on

the

rear

panel.

Refer

to

Figure

2-2,

Key

3.

The

indicator

lights

When

+8

Vdc

is

available

from

the

power

supply.

Momentarily grounds

the

S-IOO

Reset

line

generating

a Power

On

Clear

(POC)

sequence:

(1)

CPU

Program Counter

is

reset,

(2) Disk

Contoller

is

reset.

When

the

indicator

is

lit,

the

CPU

has

stopped

at

a Z-80

HLT

(76H)

instruction

in

the

program.

Provides

for

reading

and

writing

onto

5.25"

double and

single

sided

floppy

Diskettes

for

permanent

storage

of

programs and

data

files.

Lit

when

Disk

Controller

selects

drive

for

a

read

or

write

operation.

2.

PHYSICAL DESCRIPTION

2.01

The

5505 Computer

is

an

integrated

piece

incorporating

all

necessary

component

assemblies.

are:

(1) Power Supply Module

(2)

Central

Processing

Unit

(CPU)

(3)

S-lOO

Bus

Card Cage and Motherboard

(4)

Random

Access

Memory

(RAM)

(5) Floppy Disk

Controller

(6

)

Diskette

Drive

(7) Hard Disk

Controller

(8) Winchester Hard Disk Drive

Some

of

the

optional

assemblies

are:

(9)

Octaport

(an

eight-port

seria~

I/O).

(10)

Additional

Random

Access

Memory

(RAM).

DYNABYTE

-Page 6

of

electronic

equipment

The

principle

assemblies

5505

Technical

Manual 404512

Details

on

these

individual

assemblies,

as

well

as

their

schematic

diagrams

and

,replaceable

parts

lists,

are

funished

under

separate

cover

as

individual

technical

manuals. These

assemblies

have been

enclosed

in

an

exceptionally

compact package measuring 52

em

x

47

em

x 18

em

(20.5

in.

x

18.5

in.

x 7

in.)

weighing

25

kg

(about

55

lbs.).

2.02

The

5505 draws

nominally

400

VA

of

115 Vac,

60

Hz

commercial power.

It

may

be

factory

optioned

for

operation

from a

230

Vac,

50

Hz

line.

2.03

The 5505

is

designed

to

operate

efficiently

in

an environment

with

an

ambient

temperature

range from

10

to

35

degrees

Centrigrade

(50

to

95

degrees

Farenheit)

and

with

a

relative

humidity

from

20

to

80

percent.

2.04

Figures

2-1 and

2-2

provide

number key

callouts

of

all

components

located

on

the

front,

rear

and

interior

of

the

5505.

Associated

Tables

2-1

through

2-3

provide

a

cross

reference

for

each

callout,

identifying

the

respective

part

as

to

function,

description

and/or

designation.

Front

Panel

2.05

Refer

to

Figure

2-1

for

the

description

Which

follows.

The

5505

Computer

Front

Panel

has

only

two

operating

controls

with

which

the

user

should

be

concerned.

(1)

The

POWER

ON

OFF

Switch

turns

the

computer on and

off.

The

switch

also

connects

the

ac

line

power

to

a convenience

receptacle

on

the

rear

panel.

The

switch

also

contains

an

indicator

which

lights

when

there

is

an

output

from

the

internal

+8

Vdc

power

supply.

(2) The

RESET

Switch

is

used

to

restart

the

computer

if

it

should

become

locked

up

due

to

a

software

or

hardware

malfunction.

Operating

the

RESET

Switch

causes

the

S-IOO

Reset

Line,

75,

to

be

active

low.

The

Reset

Line

is

an

input

to

the

Power

On

Clear

(POC)

circuits

and

resets

the

CPU

Program

Counter,

Disk

Controller,

etc.

Then

the

CPU

initiates

a

reboot

by

jumping

to

a

starting

address

appropriate

for

the

user's

system.

The

switch

also

contains

an

indicator,

which,

when

lit,

indicates

the

CPU

has

read

a

Halt

(HLT)

instruction

and

has

stopped.

The

right

half

of

the

front

panel

contains

the

5.25

inch

diskette

storage

unit.

Rear

Panel

2.06

Figure

2-2

illustrates

the

Rear

Panel

of

the

5505 Computer.

Table

2-2

tabulates

and

describes

each

of

the

rear

panel

elements.

Ac

line

and computer

Input

Output (I/O)

connections

are

through

the

rear

panel.

At

the

right,

the

ac

line

is

connected

through

an

IEC

connector.

This

permits

the

5505

to

be

connected

domestically

to

115 Vac,

60

Hz

with

a

National

Electrical

Manufacturers

Association

(NEMA)

cord

set

or

internationally

with

a

cord

set

appropriate

for

that

country.

A

line

fuse

provides

protection

for

the

5505 and

equipment powered from

the

ac

convenience

receptacle

above.

.

DYNABYTE

-Page 7

5505

Technical

Manual 404512

Key

1

2

3

Figure

2-2

--

5505 Computer, Rear

Panel

-802470

Table

2-2

--

5505 Computer

Rear Panel

Controls

and Connectors

Element

Function

Ac

Line

Receptacle

(J6)

lEe

standard

three-wire

male

receptacle.

Provides

for

ac

line,

neutral

and a

third

wire

bonded

to

the

chassis

frame. Mates

with

Belden P-2392

ac

cord

set

for

U.S. domestic

use

or

the

appropriate

cord

set

for

the

export

country.

Ac

Line Fuse (Fl)

Provides

ac

line

overcurrent

protection:

(1

) 115

Vac

--

6

A.

(2)

230

Vac

--

3

A.

Early

serial

number

units

are

provided

with

a

circuit

breaker

in

this

position.

SWITCHED

AC

OUTLET

N~

three-wire

female

receptacle

provides

for

Receptacle

(J7) .

the

ac

line,

neutral

and

third

wire

bonded

to

the

chassis

frame.

'!his

receptacle

is

switched

DYNABYTE

-Page 8

5505

Technical

Manual 404Sl2

4

5

6

7

8

9

10

11

Axial

Fan

Dynabyte

Identification

Plate

SERIAL

1

PRINTER

Port

Receptacle

SERIAL

2

TERMINAL

Port

Receptacle

PARALLEL

I/O

Port

Receptacle

FLOPPY

DISK

I/O

Receptacle

Hard Disk I/O Access

Hole and

Clamp

I/O

Port

Connector Area

by

the

POWER

ON

Switch on

the

front

panel

-

refer

to

Figure

2-1,

Key

1 - and

is

protected

by

fuse,

Key

2, above.

Provides

for

drawing

heat

from

the

power

supply

module and

internal

heat

dissipating

pc

assemblies.

Furnishes

the

model and

serial

number

neces-

sary

for

warranty

service.

Refer

to

Figure

6-1.

O8-2S-S

connector.

Optionally

EIA

RS-232C

or

20

rnA

current

interface.

Connection

point

for

the

EIA

cable

to

the

Serial

Printer.

D8-2S-S

connector.

Optionally

EIA

RS-232C

or

20

rnA

current

interface.

Connection

point

for

the

EIA

cable

to

the

Video

Tenninal.

DB-2S-S

connector.

Eight-bit

parallel

I/O

connection

point

to

2S-conductor

cable

to

a

parallel

printer.

SO-conductor

ribbon

connector.

Provides

a

connection

point

for

the

cable

to

the

Dynabyte 5010 Dual

Diskette

Storage.

Furnishes

a

hole

and clamp

for

the

cable

to

the

Dynabyte S012

Cartridge

Module

Drive

or

SOlI

or

5013 Winchester

Drive.

Provides

positions

for

O8-2S-S

connectors.

Figure

2-2

illustrates

connectors

for:

(1) Three

ports

from

the

CPU

(2)

Up

to

16

ports

from;~p

to

two

Octaport

cards.

'<

CAUTION

Power consumption from

the

ac

convenience"

receptacle

is

limited

to

200 V

A.

2.07

A

four-inch

fan

draws

heat

dissipated

internally

out

of

the

rear

panel.

Air

is

drawn

into

the

5S05

cabinet

through

louvers

provided

in

the

bottom

of

the

cabinet.

DYNABYTE

-Page 9

Dynabyte 5505 Manuale utente

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