Atari 800 Manuel de l'opérateur télécharger pdf (Page 45)

DEBUGGING

PURPOSE

OF

DEBUGGER

CALLING

THE

DEBUGGER

DEBUG

COMMANDS

The Debugger

allow6.you

to follow

rhe

operarion ofan

objeci program

in derail

ano ro maKe

mtnor

chandes in it.

A

knowledge

ofmachin€

langxage is

helpfr when you

usethe

debugger.buL

ir

is not

essential. The

Debugger

is able

to convefi machine

mde intoissembtv

language

(disassemble).

so

you

can make code

allerarions

at

parricl

ar

memorv

locarions. All

numbers

used by rhe

Debugger.

borh in inpur

andouipur.

are he;-

The Debugg€r

is

caled from

the Editor

by typing:

BUG

@

ThiB produces

on the screen:

DEBUG

I ]

Th€ command

to return

to the Writer,4ditor

is:

x

Eso

DR

Display Registers

cR

change Registers

D or Dmrrunm

Display

Memory

CorCmmmm

Change Memory

Mmmmm

Move

Memory

Vmmmm

Verify

Memory

L or Lmmmm

List

Memory with

Disassembly

A

Assemble

One tnstruction

Into Memory

Tmmmm

Trac€

Operatior

S or Smmmm

Single-Step

Operation

Gmmmm

co

fExecute

Program)

X

Return

Lo TDITOR

G@

Pressing

th€

@

k€y halts

ceriain

op€rations.

The debug

comrrands

are listed below.

h the list,

,,mmmm,,

indicates

that the

form

ofth€ command

may include

memory

address(es).

The actuat methods

of

specifying

the memory

ad&ess(es)

and the

default addrgssed

ar€ shown

in the

examples given

later

in this section.

If you

use the commands

with

no

address(es),

the

Debugger

assigns a default ;ddress

(es):

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