Radio Shack TRS-80 Model 16 Bedienungsanleitung

•

ervlce

CUSTOM MANUFACTURED

U.S.A. BY RADIO SHACK. ADIVISION OF TANDY CORPORATION

•

----------TRS-SO

TRS-S'-

Model

Service

Manuai

1982

Tandy

Corporation

AlI

Rigbts

Reserved

Reproduction

use,

without

express

written

permission

from

Tandy

Corporation,

any

portion

this

manual

prohibited.

Whi~e

reasonable

efforts

have

been

ken

the

preparation

this

manual

assure

its

accuracy,

Tandy

Corporation

assumes

liability

resulting

from

any

errors

omissions

this

manuaI,

from

the

use

the

information

obtained

herein.

--------Itadlelllaell--------

•

Model

----------TRS-SO

Service

llanual

COntents

Introduction

3/Troubleshooting

.....

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

Operation.

.11

.37

•••••

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

2/Theory

l/Specifications

4/Prin

ted

Circui

Boards

5/parts

List.

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

6/Schematics.

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

...

•

1tadle1Mell--------

•

Model 16

_____________

TR5-BO

s_e_r

v..:i..:c::e~

...

=Dual::::~_

•

ltadlellllleli------

•

- 4 -

----------TRS-ao.,

----------

•

Model

Service

MaIlual

•

Introduction

The

TRS-Sg

Model

cantains

two

microprocessors

the

MC68~~~

and

the

Z-8~A.

This

allows

both

8-bit

and

16-bit

selectable

operation.

This

manuai

will

provide

information

primarily

the

6a",

aide

the

Model

16.

For

Z-ag

information

that

has

not

been

included,

refer

the

Model

Technical

Reference

Manual

the

Model

Service

ManuaI.

---.......:'-----ItadIeIllaell--------

- 5 -

----------TR5-S0.,

---------

•

Mode1

Service

Manual •

---------ItlIdIeIllaeli---------

- 6 - •

----------TR5-BO

---------

•Model

Service

Manual

•

Technical

Specifications

Proce8S0r

Module.

The

TRS-8~.

Model

dual

processor

system.

One

proce~sor

dedicated

Input/Output

tasks,

while

the

other

dedicated

high-level

language

tasks.

MC68",

CPO

Board

The

MC68

•••

CPU

Board:

Provides

16-bit

operation

for

high-level

language

tasks

Supports

direct

access

for

megabytes

memory •

Supports

levels

vectored

interrupts.

Supports

levels

fixed

priority

bus

arbitration.

Supports

Zsg

MC68ggg memory

interface

controller.

The

major

components

the

MC68ggg

CPU

Board

include

the:

MC68

•••

CPU.

AM9519A

Interrupt

Controller.

128K/256K-Byte

Meaory

Board

The

128K-byte

Memory

Board

provides:

Space

where

optional

128K-bytes

memory

cao

installed.

Optional

byte

parity

checking

and

detection

logic

•

option

selecting

map memory

AnY

256K

boundary

within

7-Meg memory

space

•

--------ItadIe.n.aeIÏ--------

- 7 -

----------TRs.ao

<Il

za,

CPU

Board

•

Model

Service

Manual •

The

za~

CPU

Board:

•

Provides

primary

DMA

channel

memory

memory,

1/0'

memory,

memory

1/0.

Supports

Z8~

Mode 2

vectored

interrupts.

Supports

dual

RS-232

Interfaces.

Supports

bath

asynchronous

and

synchronous

communication

schemes.

Provides

boot-strap

firmware

which

resides

the

lower

the

64K

address

space.

(Boot-strap

firmware

switched

out

the

address

space

after

bootup

complete.

)

The

major

components

the

CPU

Board

include:

•

za~-A

CPU.

Z8~-A

eTC.

za~-A

DMA.

za~-A

SIO.

•

Ploppy

Diak

Controller/printer

Interface

Board

The

Floppy

Disk

Controller

(FOC)

Board

provides:

Software-selectable

double-

single-density

operation.

TwO

independent

drive

interfaces,

one

for

the

interna!

drives

and

one

for

the

external

drives.

Adjustable

write

pre-compensation

from

35~

ns.

Fast

parallel

printer

interface,

capable

generating

interrupt

when

the

prioter

can

another

character.

The

major

compone~ts

the

FOC

Board

include:

•

za~-A

PlO.

WD1791.

WD1691.

WD2143.

•

--------ItadIeIllllell--------

- a -

64K-byte

Memory

Board

----------

TRS-Sa"

---------

•

Model

Service

MaDu.l

•

The

64K-byte

Memory

Board

provides

jumper

option

selection

for

one

memory

pages.

Its

major

components

are

4116

16K x 1

dynamic

RAMs.

Video/Key

board

Interface

Board

The

Video/Key

board

Interface

Board

provides:

lines

either

characters.

Programmable

timing

parameters.

seriaI

bit

stream,

processor

interrupt.

Its

major

components

are

MC6845

CRT

controller

and

2114

static

RAMs.

Motherboard

18-s1ot)

The

8-slot

Motherhoard

provides

conductor

paths

which

distribute

regulated

power

and

provide

signal

inter-

connection

for

the

system

boards.

Option.l

Boards

Optional

boards

include

the

following:

Hard

Disk

Interface

Board

16K

RAM,

bank-selectable.

Interfaces

intelligent

high-speed

eontroller.

hard

disk

drives

supported.

Major

eomponents

inelude

4116

16K-by-l

dynamic

RAMa,

Z8~-A

CTC.

High-Re~olution

Graphies

Board

64g

24g-pixel

resolution.

Direct

overlay

alphanumeries

and

auto

reverse.

Options:

user-programmable

for

blanking

graphies,

seleeting

wait

states,

and

contro11ing

the

and

address

pointers.

Option:

Control

and

Data

Registers

are

port

mapped.

Address

pointers

increment

decrement

automatica11y

after

read

write

memory.

Major

eomponents

inelude

4116

16K-by-1

dynamic

RAMs.

--------IIlIdIeIllaeli---------

••

Arenet

Interface

Board

--"Local

Area

Network

supports

255

users

the

same

network

with

transmission

capability

2~~9

feet

and

data

rate

2.5

- 9 -

K-bits.

Butter

Memory

segmented

ioto

four

pages

256

bytes

each.

Its

major

components

include

eus

tom

151

device

and

2114

static

RAMa.

•

Model

----------TRs-ao

Service

llaDual •

128K/256K

Memory

Board

128R

256K-bytes

dynamic.

RAM,

depending

upon

whether

one

two

RAM

banka

have

been

installed.

Byte

parity

checking

and

detection

logic

also

provided

option.

The 128X/256K

Memory

soard's

major

components

include

MCM6665

64X-by-l

dynamic

RAMa.

CRT

Display

Module

The

CRT

display

module

has

basically

the

same

specifications

the

Model

video

monitor:

however,

increased

bandwidth

(22

MHz)

provided

for

sharper

display.

Resolution

typically

9gg

lines

center

sereen

and

75g

lines

the

corners.

green

phosphor

CRT

provided.

Ploppy

Disk

Drives

The Model

can

have

one

two

Tandon

Thin-Line

drives,

double-

single-sided

media,

single-

double-density,

built

into

the

Computer.

Power

Supply

The

power

suppl

requirements

are:

•

+5v

13.36

A•

+l2v

2.5

-12v

2f1f1

•

+24v

7 A• •

---------ltadlelllaeli---------

lf1

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