2500_Users_Manual- - 第351页

!M0000 , FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF, FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF, FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF, FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF, FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF Start Record !M or ?M = Start Characters 0…

Translation

Formats

Although

each

data

byte

has

address,

most

are

implied.

Data

bytes

are

addressed

sequentially

unless

explicit

address

included

the

data

stream.

This

address

preceded

and

must

contain

hex

octal

characters,

and

must

followed

comma,

except

for

the

ASCII-Hex

(Comma)

format,

which

uses

period.

The

programmer

skips

the

new

address

store

the

data

byte;

succeeding

bytes

are

again

stored

sequentially.

Each

format

has

end

code,

which

terminates

input

operations.

However,

new

start

code

follows

within

characters

end

code,

input

will

continue

uninterrupted.

characters

come

within

seconds,

input

operation

terminated.

After

receiving

the

final

end

code

following

input

operation,

the

programmer

calculates

sumcheck

all

incoming

data.

Optionally,

sumcheck

can

also

entered

the

input

data

stream.

The

programmer

compares

this

sumcheck

with

its

own

calculated

sumcheck.

they

match,

the

programmer

will

display

the

sumcheck;

not,

sumcheck

error

will

displayed.

Note:

The

sumcheck

field

consists

either

2-4

hex

3-6

octal

characters,

sandwiched

between

the

and

comma

characters.

The

sumcheck

immediately

follows

end

code.

The

sumcheck

optional

the

input

mode

but

always

included

the

output

mode.

The

most

significant

digit

the

sumcheck

may

when

expressing

bits

octal

characters.

The

programmer

divides

the

output

data

into

8-line

blocks.

Data

transmission

begun

with

the

start

code,

nonprintable

STX

character,

optionally,

SOH.*

Data

blocks

follow,

each

one

prefaced

address

for

the

first

data

byte

the

block.

The

end

transmission

signaled

the

end

code,

nonprintable

ETX

character.

Directly

following

the

end

code

sumcheck

the

transferred

data.

ASCII-Octal

SMS

and

ASCII-Hex

SMS

use

SOM

(CTRL-R)

start

code

and

EOM

(CTRL-T)

end

code.

D-20

ProMaster

2500

User

Manual

!M0000 ,

FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF,

FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF

Start Record

!M or ?M = Start Characters

0000 = Address

End-of-File Record

Data Records

FF =

, =

; =

2 Hex Characters = (1 Byte)

Bytes per record is variable

End of Record Character

if followed by expressed

address

LEGEND

Nonprinting line feed, carriage return, and nulls

Nonprinting carriage return

0079-2

Translation

Formats

RCA

Cosmac

Format,

Code

Data

this

format

begin

with

start

record

consisting

the

start

character

(!M

?M),

address

field,

and

space.

See

Figure

D-7.

Figure

D-7

Example

RCA

Cosmac

厂

Format

The

start

character

sent

the

programmer

development

system,

followed

the

starting

address

and

data

stream

which

conforms

the

data

input

format

described

the

ASCII-Hex

and

Octal

figure.

Transmission

stops

when

the

specified

number

bytes

has

been

transmitted.

Address

specification

required

for

only

the

first

data

byte

the

transfer.

address

must

have

hex

characters

and

must

followed

space.

The

programmer

records

the

hexadecimal

character

after

the

space

the

start

the

first

data

byte.

carriage

return

must

the

space

the

start

code

used.)

Succeeding

bytes

are

recorded

sequentially.

Each

data

record

followed

comma

the

record

not

preceded

address,

semicolon

starts

with

address.

Records

consist

data

bytes

expressed

hexadecimal

characters

and

followed

either

comma

semicolon,

and

carriage

return.

The

programmer

ignores

any

characters

received

between

comma

semicolon

and

carriage

return.

The

carriage

return

character

significant

this

format

because

can

signal

either

the

continuation

the

end

data

flow;

the

carriage

return

preceded

comma

semicolon,

data

must

follow;

the

absence

comma

semicolon

before

the

carriage

return

indicates

the

end

transmission.

Output

data

records

are

followed

either

comma

semicolon

and

carriage

return.

The

start-of-file

records

are

expressed

exactly

for

input.

ProMaster

2500

User

Manual

D-21

S0000

XFFFFFFFFFFFFFFFFC

Start Record

S = Start Character

0000 = Address Field

End-of-File Record

Data Records

X =

FF =

C =

Data Record Start Character

2 Hex Characters (1 Byte)

Checksum. 1-digit summation

of data in record

0080-2

Translation

Formats

Fairchild

Fairbug,

Code

the

Fairbug

format,

input

and

output

requirements

are

identical;

both

have

8-byte

records

and

identical

control

characters.

Figure

D-8

shows

Fairbug

data

file.

file

begins

with

-character

prefix

and

ends

with

-character

suffix.

The

start-of-file

character

followed

the

address

the

first

data

byte.

Each

data

byte

represented

hexadecimal

characters.

The

programmer

will

ignore

all

characters

received

prior

the

first

Note:

Address

specification

optional

加

this

format;

record

with

address

directly

follows

the

record.

Each

data

record

begins

with

and

always

contains

data

bytes.

-digit

hexadecimal

checksum

follows

the

data

each

data

record.

The

checksum

represents,

hexadecimal

notation,

the

sum

the

binary

equivalents

the

digits

the

record;

the

half

carry

from

the

fourth

bit

ignored.

The

programmer

ignores

any

character

(except

for

address

characters

and

the

asterisk

character,

which

terminates

the

data

transfer)

between

checksum

and

the

start

character

the

data

record.

This

space

can

used

for

comments.

Figure

D-8

—

Example

Fairchild

Fairbug

The

last

record

consists

asterisk

only,

which

indicates

the

end

file.

D-22

ProMaster

2500

User

Manual