Vector Graphic Extended Systems Monitor Instrukcja Użytkownika Pobierz pdf (Strona 11)

Extended

Systems

Monitor

User'

s Manual

*K -

SET

BREAKPOINTS

This

command

expects

a 4

digit

address,

and

will

place

a

RESTART

7

(FF)

at

that

location

in

RAM.

When

that

instruction

is

executed,

which

is

a

call

to

location

8,

the

CPU

will

jump

to

the

monitor

routine

that

dumps

the

register

contents.

The

instruction

replaced

wi

th

FF

will

also

be

restored.

Entry

of

the

monitor

at

E000

will

clear

the

breakpoint,

as

will

pressing

the

RESET

swi

tch.

*M

<ADRl>

<:AJ:E2>

<AIR3> -

KJVE

MFJvI)RY

Bu:x::K

The

data

contained

in

memory

starting,at

ADR1

and ending

at

ADR2

is

moved

to

memory

locations

starting

at

ADR3.

This

command

is

useful

for

moving a

program

from a temporary

storage

location

to

its

correct

address.

If

there

is

an

overlap

of

the

two

memory

areas,

interesting

results

are

obtained.

For example, M 6000

7BFF

6400

will

cause

the

block

of

data

from 6000

through

63FF

to

be

repeated

8

times

from 6000

through

7FFF,

since

by

the

time

location

6400

is

read,

it

has

been

overwritten

with

data

from 6000.

This

is

useful

for

bank programming

of

proms,

or

for

creating

repeating

instruciton

sequences

for

test

purposes.

*N

- NCN-DESTRUCTIVE

MFMRl

TEST

Memory

locations

starting

at

0000

are

read and

the

data

temporarily

stored.

The

memory

location

is

then

tested

to

see

if

00

and

FF

can

be

written

and

read

correctly.

This

continues

after

rewriting

the

original

data

until

the

first

error

is

detected,

whereupon

the

address

is

displayed

followed

by

the

data

wri

tten

into

memory and what

was

read from

it.

This

command

is

most

useful

for

checking

how

much

memory

a system

contains.

For example,

if

the

system

contains

16K

of

memory, 4000

00

FF

should

be

printed,

indicating

that

there

is

no

memory

at

address

4000.

Since

the

test

is

non-destructive

to

data

in

memory,

it

can be used

at

any

time.

*0

<:Pan'>

<DATA>

- 0l1l'PUT

TO

PORT

The

two

hex

digits

"DATA"

are

loaded

into

the

accumulator

and

the

instrucion

"our

FORT"

is

executed.

This

command

is

useful

for

checking our

peripheral

equipment.

For

example,

if

a

printer

is

connected

to

I/O

port

6,

0

06

41

will

cause

an

"A"

to

be

printed

since

41

is

the

hex

ASCII

code

for

"A".

Rev.

4.3-A

13/15/79

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