Compupro Ram 24a User manual

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8261-0477

Ap

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19

88

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&&!hi

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l

RAM

24A

Technical Manual

High

Speed

Static

Memory

for

the

IEEE

696

Bus

RAM

24A

Technical

Manual

• 82

61

·0477

i

.

'

t

RAM

24A

Technical

Manual

477

Cop}

'

right

1988

Viasyn

Corporation

Hay~

·

ard,

CA

94545

Part

No:

8261-0477

File

name:

RAM24A.MAN

DISCLAIMER

-

Viasyn

Corporation

makes

no

representations

or

warra

·

nties

with

respect

to

the

contents

hereof

9nd

specifically

disclaims

any

implied

warranties

of

merchantability

or

fitness

for

any

particular

purpose.

Further

1 VI.A.SYN

reserves

the

right

to

revise

this

publication

and

to

make

any

changes

from

time

to

time

in

the

content

here

·

of

without

obljgation

of

VIASYN

to

notify

any

person

of

such

revision

or

changes.

AlJ

rights

reserved.

No

part

of

this

publication

may

be

reproduced

or

transmitted

in

any

form~

or

by

any

means,

without

the

written

permission

of

VIASYN.

Printed

and

assembled

in

the

United

States

of

America.

Trademarks:

RAM

24A,

CPU

286,

CPU

68K,

CPU

8085

/

88,

CPU

8086,

DISK

3,

SPI86,

SPUZ,

the

CompuPro

logo;

Vias)

·n

Corporation.

R~M

24A

Te c~

nical

Manual •

8261·0477

i i

1

'

I

r

I

'

I

Contents

Pref

ace

Overall

Description

•

TM

Installing

the

RAM

24A

Jumper

Summary

Jumpers

J

l-J4

-

Memory

Address

Select

Jumper

JS

-

SPIO

™

Window

Select

Positions

A

through

E: Size

Positions

F

through

L:

Location

SPIO

without

SPUZ""

or

SPl86"'

SPIO

with

SPUZ(s)

and

without

SPI

86

SPIO

with

SP186(s)

and

without

SPUZ

SPIO

with

both

SPUZ

and

SP186

Jumper

J5

Summary

Jumper

J6

Jumper

J7

System

Configuration

Jumper

Summary

Locating

RAM

ICs

by

Address

and

Byte

Specifications

Schematics

1

I

2

s

5

6

7

8

9

IJ

12

13

RAM

24A

Technical

Manual • 8261·0477

i i i

..

I

Preface

This

manual

de

s

cribes

the

features

and

functi

ons

of

the

RAM

24A

board

.

This

is a

referen

ce manu31

for

hardware

engineers,

programmers

and

anyone

el

se

who

needs to

understand

how

the

RAM

24A

functions

in

a

CompuPro

computer

system

.

It

is

neither

a

troubleshooting

guide

nor

a

repair

manual

.

This

manual

begins

with

an

overall

de

s

cription

of

the

board

and

a

detailed

account

of

the

jumper

settings.

Specifications

and

schematics

are

also

included

.

Overall Description

CompuPro's

RAM

24A

board

is a

high

speed

CMOS

Static

RAM

board

for

S-JOO

Computers

.

The

RAM

24A

uses 32

high

performance

32K

by

8-bit

CMOS

RAM

chips

to

provide

a total

of

1

Mb

or

5I

2K

words

of

storage.

The

board

works

in

"word wide"

mode

in

16-bit

applications,

as

well as in "byte

wide"

mode

in

8-bit

applications.

Supported

by

CompuPro's

Concurrent

DOS

8-16

™

multi-user,

multi-taskjng

operating systems,

the

RAM

24A

is

designed

to

work

with

our

12

MHz,

two

-

cycle

CPU

286

TM

•

In

addition,

the

RAM

24A has

jumper

selectable

windows

that

can

be

blocked

out

for

use

in

systems

with

SPIO, SP186

and

/

or

SPUZ

boards

that

overlap

the

RAM

24A

memory

space,

thus

eliminating

the

use

of

the

S-100

PHANTOM•

signal.

(

co111i11ued)

RAH

24A

Techni

cal

Menual • 8261·0477

1

Note:

The

RAM

24A

was

designed

to

run

with

the

12

MHz.

two-cycle

CPU

286""

and

may

not

work

with

older

processors.

SIOO

pins 3 and

21

are

grounded

on

the

RAM

24A.

3

is

XRDY

and

21

is

an

NDEF

pin.

previously

used

by

CompuPro

as

Q>disable.

Pins

3

and

2I are

inputs

on

the

CPU

8085/88ru ,

CPU

80861M •

3

is

an

input

on

DISK

3tm boards

earlier

than

Rev. J.

On

the

CPU

68K

n..

•

21

is

a

jumperable

input

(J

11)

and

3 is

used

only

on

boards

earlier

t.han

Rev.

H.

To

modify

these

boards

for

use

with

the

RA~1

24A,

disconnect

pins

3

and

21

from

the

IC

inputs

to

which

they

go

(or

remo"e

jumpers)

and

pull

the

disconnected

inputs

on

the

1c·s

on

the

board

up

to

+5V.

(This

is

not

required

if

a

jumper

is

present.)

See

the

specific

board

technical manual

for

location

of

IC's and

jumpers.

Installing

the

RAM

24A

ST

A

TIC

WARNING:

Please

observe

these precautions:

•

Store

only

in

anti-static

materials. Do

not

use

non-conductive

Styrofoam

or

plastic trays

or

bags.

•

Observe

proper

static

discharge

techniques

when

handling

boards.

• K.

eep

fa

bric

and

other

static-generating

materials

away

from

boards

and

circuits.

•

Turn

off

power

when

inserting

or

removing

boards.

Leave

all

power

supplies

off

for

several

minutes

to

be

certain

no

voltage is

present.

(

co11ti11ued)

RAM

Z4A

Technical

Manual • 8261·0477

z

•

Installing

the

RAM

24A

Basic Installation

Step

J.

Unpack the

RA!tf

14A Board.

Along

with

the

board,

you

\\'ill

find

two

card

extractors

in

the

anti-static

plastic bag.

PEG

HOLE

CARD

EXTRACTOR /

Step 2. Install

Card

Extractors.

J. Hold

the

board

with

the

component

side

toward

you.

2. Insert

the

peg

on

the

card

extractor

into

the

hoJe in

the

right

corner

of

the

board.

Fold

the

extractor

over

the

board's

edge

until the

extractor's

hole

snaps

over

the

peg.

NOTE;

Make

sure

the

Jong

edge

of

the

extractor

is aJong

the

top

edge

of

the board.

3.

Repeat

for

the

left

extractor.

Slep 3. Cl1eck Jumper

Setti11gs

For

standard

jumper

settings

for

use

with

a

CompuPro

operating

system.

check

your

Operati11g

SJ•stem

!11s1alla1;011

a11d

Cus1omizaiio11

G1,ide

Co11curre111

DOS 8-16. Jun1pers

are

described jn

detail

under

the

Jumper

Summary

section.

(

co11ti1111ed)

RAM

24A

Technical

Menual

• 8261·0477

3

I

•

.

'

t

Installing

the

RAM

24A

Step

4.

/11serJ

1he

RA.M 24A

i11to

1he

bus.

The

power

to

the

system

must

be

off.

Place

the

board

into

a slot

near

the

CPU.

The

edge

connector

is

offset~

so

the

RAM

24A

will

fit

only

one

way. Push down

GENTLY

until

the

board

is

firmly

installed.

Caution:

The

RAM

24A

without

regulators

is

designed

for

use

in

systems

\\

'

ith

regulated

po"

·

er

supplies

(boards

with

SV

stickers).

Do

not

atte

.

mpt

to

adapt

the

board

for

use

in

systen1s

with

unregulated

power

surf"l1ies.

Do

not

install

.•.

a

5-volt

regulator

(7805) face up

in

l !47. L!

47

requires

an

optional

heat

sink

/

regulator

adJpr~r.

available

from

CompuPro

(part

numt)er

l455-00..S9).

...

"L-t,

,..

i '

'"

-..rr

A '

.

....

To

install this

adapter.

use this

illustration

as

a guide:

STEP t

on•

OUI

l l1ol1• -

l«I

~6&!

"'°'

~

-

STEP

1

!la-

1.5

111ic10

-,_8CI c..,_.•ICi<

"'C•

"'

9

..

• •

--

I

!JI

7t

'k;

I h

;t

....

'

-·-

....

'

-·

-..

-

..

.....

_

.-

STEP 3 Attach

11..t

alrd>

IO

llO.,d

aa

I~

·

•I

-

.,,.,

.OkH<

,.,

..

IOI IO<ldl

IO

141ppti.cl h0'911

In

ltfft4

DI

..,._,,

9""'°'

eu

...

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-.e1

RAM

24A

Technical

Manual -

6261·0477

4

•

'

Jumper

Summary

•

JUMPERS

JJ -

J4

-

Memory

Address

Select

Jumpers

J l -

J4

are

used

to

select

the

memory

address

bits

A20-23.

The

address

is

set

in a

binary

fashion

with

each

jumper

position

representing

an

address

bit.

JI

represents

A23.

12

represents

A20.

JJ

represents

A22

and

J4

represents

A2

l.

A

jumper

connected

to

ground

(B-

C)

represents

a

..

zero" and a

jumper

connected

to

+S

Volts

(A-C)

represents

a

..

one."

These

jumpers

are

connected

via

traces

(B-C)

on

the

board

to

ground

selecting

the

lowest allowable 1 l\1b

boundary

for

memory

(the

starting

address

of

the

memory

is

OOOOOOh

and

the

ending

address

is

OFFFFF).

To

address

the

board

at

any

other

boundary.

these traces must

be

cut

and

jumper

wires

connected

between

A

and

C.

For

example,

to

set

the

memory

to

start

at

400000h,

cut

the

trace

on

J3

(B-C)

and

install a

jumper

wire

from

A-C

on

J3.

NOTE:

The

following

jumpers

(J5-J7)

are

used

to

disable

areas

of

the

RAM

24A

memory space.

These

jumper

selectable

"windows"

are

used

in

systems

with

SPIO, SPUZ

and

/

or

SP186

boards

that

overlap

the

RAM

24A

memory

space,

thus

eliminating

the

need

for

the

S-100

PHANTOM*

signal.

In

CompuPro

standard

configurations,

the

SPIO

memory

space

(4

Kbytes

per

SPIO) is

set

at

the

top

of

pages

ODh,

OEh

or

OFh.

The

SP186

memory

space

is all

of

OFh

and

the

SPUZ

memory

space

is all

of

OEh.

The

RAM

24A windows

appear

in these pages

only.

If

the

SPIO, SP186

and

SPUZ

are

used

at

other

memory

locations.

it

is

recommended

that

they

be

used

without

underlying

system memory.

RAM

24A

Technical

Manual · 8261·0477

5

•

Jumper

Summary

JUMPER

JS

-SPIO Window Select

Jumper

JS

is

used

to

block

out

sections

of

the

RAM

24A

memory so it

doesn't

overlap

the

SPIO

memory

space.

This

jumper

has

positions

A

through

L and is located

in

the

lower

center

of

the

board.

Positions

A

through

E are

set

according

to

the

number

of

SPIOs in

the

system

and

positions

F

through

L are set according to

the

system

configuration

in

which

the

R

.

A\~1

24A

will

reside.

A

detailed

discussion

of

positions

A

through

E and F

through

L

follo~·s.

Note:

This

..

position does not have an I jumper.

JUMPER

JS

OL

AO

0 0 0 0 0 0 0 0 0

BC

0

EFG

HJ

K

J5:

PositiOJlS.

A

throu

gh

£:

SPIO

u··

i1rdO\V

Si=e Select

Each

SPIO

employs

a

4K

block

of

memory

space

and

standard

CornpuPro

software

supports

up

to

two

SPIOs.

Positions

A

thru

E

of

this

jumper

allow

a

4

or

SK

window

(or

no

~

·

indow)

to

be

blocked

out

of

the

RAM

24A

memory.

For

a

system

with

a

RAt\-1

24A

and

without

a SPIO (so

no

4

or

8K

window

need

s to

be

blocked

out),

place

a

shunt

from

C

to

D.

If

there

is

one

SPIO

in

the

S}!Stem

(and,

therefore

, ·a

4K

window

mu

st be

blocked

out),

shunt

A-B

and

D-E.

If

there

are

two

SPIOs

in

the

system

(8K

block

needed).

shunt

B-C

and

D-E.

The

following

table

summarizes

the

se

options.

Number

of

.

SPIOs

in

System

0

1

2

RAM

~4A

Technical

Manual • 8261-0477

6

Shunt

C-0

A-Band

D-E

B-C

and 0 -E

Jumper

Summary

J5

Posi1io11s

F tlirc1ugh

l:

SPIO

it

'

i11dow

Location

SeleC'I

Positions

F

through

L

of

Jumper

S

select

in

which

page

of

memory

(ODh,

OEh

or

Ofh)

the

4

or

8K

window

will

appear.

The

location

of

the

window

depends

on

the system

configuration.

For

instance,

if

there

are

SP

l86 boards in

the

system,

they

occupy

page

OFh

(the

full

64K)

of

the

memory

space.

When

an

SPl86

is

present,

(and

without

a

SPUZ

present)

the

SPJO

resides

in

the

upper

4K

(upper

8K

if

two

SPlOs)

of

page O'Eh.

(See

also

J6.)

In

tJ1is

configuration,

the

SPIO

window

must

appear

in

page

OEh. A

description

of

the

possible

configurations

and

the

appropriate

jumper

setting

follows

.

SPIO

wit/Joui a

SPUZ

or

an

SP

186

Jn

systems

with

a

SPIO

and

without

an

SPI

86

or

a

SPUZ,

the

SPJO

resides

in

the

upper

4K

(or

8K)

of

OFh.

Therefore,

the

SPIO

window

must

be

set

in

page

Ofh.

To

do

this,

shunt

G-H

and

J-K.

SPIO

with

J-15

SPUZs

mid

withouJ

a11

SPJ86

In

systems

with

SPIO

and

SPUZ(s)

but

without

an

SP186,

the

SPIO

resides

in

page

OFh

and

the

SPUZ

in

OEh.

Therefore,

the

SPIO

window

must

be

set

in

page OFh. To

do

this, shunt

G-H

and

J-K.

SPIO

with

1-15

SPJ86s

bul •vithoui a

SPUZ

In

systems

with

SPIO

and

SP186(s)

and

without

a

SPUZ,

the

SPIO

window

must

appear

in

page

OEh

since

the

SP

l

86s

reside

in

page

OFh. To do

this,

shunt

G-H

and

K-L.

SPIO

)Vitlr both

SPUZ

a1td

SP

186

In

systems

with

SPIO

and

both

SP

186

and

SPUZ

boards.

the

SPIO

window

must

appear

in

page

ODh.

To

do

this

shunt

F-G

and

J-K.

RAM

24A

Technical

Manuel • 8261·0477

1

t

-

•

t;

•

"

•

"

Jumper

Summary

To s11mmarize:

System

Configuration:

SPl0

/SP186/

SPUZ

SPIO/SP186

SPIO

alone

or

SPIO/

SPUZ

JUMPER

J6:

SPl86

Window Select

SPIO Page:

ODh

OEh

OFh

Jumper:

F-G,

J-K

G-H,

K -L

G-H,

J-K

•

Jumper

J6

must

have

a

shunt

to

window

out

the

RAf\1

space

for

the

SPl

86(s).

The

SPl

86"s

mt>n1

ory

space

is in

page

OFh

(the

~

'

hole

6-tK). In

s\

·

stems

\\'ith

•

I

to

J5 SPl86s,

place

a

shunt

in

this

jumper

so

the

RAM24A

and

the

SP186(s) \\till

not

ha\'e

overlapping memory.

JUMPER

J7:

SPUZ

Window

Select

Jumper

17 must

have

a

shunt

in

it

to

\\·indow

out

the

RAM

space for the SPUZs.

The

SPUZ's

memory

space

is

in

page

OEh (

the

\\·hole

64K).

In

S)

'S

tems

with

I

to

IS

SPUZs,

pla

ce a shunt in

this

jumper

so

the

RAM

2

4A

and

the

SPUZ

(s) will

not

ha

ve

overlapping

memory.

RAH

24A

Techni

cal

Manual -8261·0477

8

System

Configuration

Jumper

Summary:

#of

SP

I

Os

0

I

J

2

0

1

#

of

SPJ86s

0

1-15

0

1-

15

0

1-15

•

0

1-15

0

(

co11r

i11ued)

#of

SPUZs

0

1-

15

1-15

15

C-D

A-B

D-E

G-H

J-K

A-8

D-E

G-H

K-L

B-C

D-E

G-H

J-K

B-C

D-E

G-H

K-L

C-D

A-8

D-E

G-H

J-K

J6

no

s

hunt

shunt

no

shunt

no

shunt

no

shunt

no shunt

J7

no shunt

no

shunt

no shunt

no

shunt

no

shunt

no shunt

shunt

RAH

24A

Technical

Manual · 8261

·04

77

9

I

i

I

•

(

.

I

[

~

-

' •

.

-

~

System

Configuration

Jumper

Summary

-continued

#of

#

of

#of

15

SPJOs

SPJ86s SPUZs

1 1-15

1-15

A-8

D-E

F-G

J-K

2 0

1-15

B-C

D- E

G-H

J-K

2 1-15 1-15 B-C

D- E

F-G

J-K

RAM

24A

Technical

Manual •

8261-0477

10

J6

J7

shunt shunt

no shunt shun:

shunt shunt

•

l

• !

•

••

Locating

RAM ICs

by

Address

and

Byte

The

Component

Layout

below may

be

used as a map

to locate

specific

RAM

lCs

by

address

and

byte

array.

The

following table lists

the

address

within

the

board

and

what

RAM

chip

corresponds

to

that

address.

ADDRESS

OOOOOh-OFFFFh

lOOOOh-1

FFFFh

20000h-2FFFFh

30000h-3

FFFFh

40000h-4FFFFh

50000h-5FFFFh

60000h-6FFFFh

70000h-7FFFFh

80000h-8FFFFh

90000h-9FFFFh

AOOOOh-AFFFFh

BOOOOh-BFFFFh

COOOOh-CFFFFh

DOOOOh-DFFFFh

EOOO-Oh-EFFFFh

FOOOOh-FFFFFh

••

•• ••

••

EVEN

BYTE

••

OA

IA

2A

3A

4A

SA

6A

7A

8A

9A

JOA

I

IA

12A

13A

14A

ISA

••

,

••

ODD

BYTE

OB

IB

28

38

48

SB

68

78

88

98

108

I

18

128

138

148

158

::

, : e

•• •

••

•

••

•

••

• •

•

1,

:,

•

::

11~

::

#,

/

..

::

I

f'

••

-'

:1'1

••

lil' I

e. e.

. .

',.

••

•

..

~

...

•• •.

l'

•• •• ..

I·

••• • •

••

·1

~

••

.(

I<

•• •• ' ·1·

••

l1< •

•• •

•

C:

...

• •

•

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•

•••

••

•••

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• • •

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•

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.,,\

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RAM

24A

Technical

Manual ·

8261·0477

11

•

I

'

•

'

l

I

'

Specifications

Size:

Weight:

Length

Depth

Height

Timing:

Memory:

S-100

Address

Space:

Power

Consumption:

RAM

24A

Technical

Manual •

8261·0477

12

253

mm

(10

in)

13

mm

(0.S in)

127 mm (S in)

308

g (10.8 oz.)

Meets

IEEE

696

timing

including

systems

beyond

6

~1Hz.

Meets

requirements

for two-

cycle

oper3tion

up

to

12

MHz

"·ith

CompuPro

CPU

286.

I

t-tb

(32,

3:'.!K

by

8 Static

RA~!)

.

Factor~·

set

at

lo\\·est I

~1b

boundary.

~-fay

be

set

in

the

field

to

any

other

I

~tb

boundary

o,

·

er

the

16

~1b

range

.

758

mA

t~

·

pical

at

SV

875

mA

maximum.

-

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RAM

24A

Technical

Manual -

8261

·0477

13

•

I

Schematics

~

41

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CompuPro RAM 24A User manual

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