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Trans lati on Form ats B-30 AutoSite User Manual Problem: Find the address for the first data byte for the followi ng file. : 02 000 0 02 1230 BA : 10 004 5 00 55AA FF.....BC Solution: Step 1. Find the record address for…

Translation Formats

AutoSite User Manual B-29

Intel MCS-86 Hexadecimal Object, Code 88

The Intel 16-bit Hexadecimal Object file record format has a 9-character

(4-field) prefix that defines the start of record, byte count, load address,

and record type and a 2-character checksum suffix. Figure B-15 shows a

sample record of this format.

The four record types are described below.

Figure B-15

An Example of Intel MCS-86 Hex Object

00-Data Record

This begins with the colon start character, which is followed by the byte

count (in hex notation), the address of the first data byte, and the record

type (equal to 00). Following these are the data bytes. The checksum

follows the data bytes and is the two’s complement (in binary) of the

preceding bytes in the record, including the byte count, address, record

type, and data bytes.

01-End Record

This end-of-file record also begins with the colon start character. This is

followed by the byte count (equal to 00), the address (equal to 0000), the

record type (equal to 01), and the checksum, FF.

02-Extended Segment

Address Record

This is added to the offset to determine the absolute destination address.

The address field for this record must contain ASCII zeros (Hex 30s).

This record type defines bits 4 to 19 of the segment base address. It can

appear randomly anywhere within the object file and affects the

absolute memory address of subsequent data records in the file. The

following example illustrates how the extended segment address is used

to determine a byte address.

:10000000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00

:10001000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0

:10002000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE0

:10003000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFD0

:10004000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFC0

:00000001FF

Data

Records

Byte Count

Checksum

Record Type

End-of-File Record

Address

Start Character

0087-4

LEGEND

Nonprinting Carriage Return, line feed, and nulls determined by null count

:020000020000FC

Extended Record

Offset Address

Checksum

Translation Formats

B-30 AutoSite User Manual

Problem:

Find the address for the first data byte for the following file.

: 02 0000 02 1230 BA

: 10 0045 00 55AA FF.....BC

Solution:

Step 1. Find the record address for the byte. The first data byte is 55.

Its record address is 0045 from above.

Step 2. Find the offset address. The offset address is 1230 from

above.

Step 3. Shift the offset address one place left, then add it to the

record address, as shown below:

1234

Offset address (upper 16 bits)

+ 0045

Record address (lower 16 bits)

12345

20-bit address

The address for the first data byte is

12345

Note: Always specify the address offset when using this format, even when the

offset is zero.

During output translation, the firmware will force the record size to 16

(decimal) if the record size is specified greater than 16. There is no such

limitation for record sizes specified less than 16.

03-Start Record

This record type is not sent during output by Data I/O translator

firmware.

Translation Formats

AutoSite User Manual B-31

Hewlett-Packard 64000 Absolute Format, Code 89

Hewlett-Packard Absolute is a binary format with control and

data-checking characters. See Figure B-16.

Data files begin with a Start-of-file record, which includes the Data Bus

Width, Data Width Base, Transfer Address, and a checksum of the bytes

in the record.

Figure B-16

An Example of HP 64000 Absolute Format

End-of-File record consists only of a word count of 0.

Checksum

Data bytes

Address where following data byte is to be stored.

BYTE COUNT — number of 8-bit data bytes.

WORD COUNT — number of 16-bit words in record except checksum and itself.

CHECKSUM — modulo 256 sum of all bytes in the record except the first byte.

TRANSFER ADDRESS — for microprocessor program counter.

DATA WIDTH BASE — see text.

DATA BUS WIDTH — see text.

WORD COUNT — number of 16-bit words in the record; always 04 in

Start-of-File record.

Note:

START-OF-FILE

RECORD

ONE DATA

RECORD

END-OF-FILE

RECORD

0088-2

HIGH

ORDER

LOW

ORDER

Third Byte

MSB

LSB

Second Byte

32-bit address

is sent in this

manner, in 4

groups of 8-bit

bytes.

This format is binary. Therefore, no ASCII control characters

or carriage returns and line feeds are allowed.