Commodore Plus 4 - Page 244

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232

Machine

Language

the

Commodore

Plus/4

Example:

2000

The

monitor

asked

begin

executing

with

the

instruction

location

$2000.

Searching

Memory

for Specified

Bytes—The

Command

The

(Hunt)

command

used

section

memory

for

occurrences

specified

data

byte(s).

The

syntax

follows:

start

address

end

address

data

The

start

address

the

hexadecimal

address

which

the

section

memory

begins.

The

end

address

the

last

hexadecimal

address

the

section

memory.

The

data

are

the

one

hexadecimal

bytes

(one

two

digits)

separated

spaces,

character

string

preceded

single

quote.

Every

location

from

the

starting

address

through

the

ending

address

exam

ined

and

compared

with

the

first

byte

the

data.

When

match

found,

the

location

compared

with

the

second

byte,

and

until

difference

found.

difference

found,

the

starting

location

the

data

memory

displayed.

the

data

are

specified

the

use

character

string,

the

bytes

that

match

are

the

corresponding

CHR$

codes

(see

Appendix

the

characters.

Example:

8000

FPFP

8007

PC56

The

monitor

asked

every

memory

location

from

$8000

$FFFF

inclusive

for

the

start

the

sequence

$43,

$42,

$4D.

The

monitor

finds

this

exact

sequence

twice,

starting

$8007

and

starting

$FC56.

Example:

8000

PFPP

'COMMODORE

80CP

E3A7

The

monitor

asked

every

memory

location

from

$8000

through

$FFFF

for

the

start

the

sequence

bytes

given

the

CHR$

codes

each

letter

the

word

"COMMODORE."

finds

this

sequence

twice,

starting

$80CF

and

$E3A7.

from

Cassette

Disk—The

Command

The

(Load)

command

used

load

machine-language

program

previously

saved

(see

the

section

the

command)

cassette

disk.

The

syntax

follows:

Commodore Plus 4 - Page 244

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