Sharp JW-21MN [5] Reading system memory, [6] Writing system memory

[5] Reading system memory

Read the specified number of bytes of data from the specified address in system memory. [Write mode assignment]: None

[Communication format]

Command

"+"

"C"

"L"

"A"

CMD

SUB

ATTR

SEG

SADR

－－－

Response

"+"

ACK

"C"

"L"

"A"

CMD

SUB

ATTR

SEG

SADR

－－－

Symbol

Data

Details

CMD

43(H)

Function code

SUB

44(H)

Sub code

SEG

08(H)

Read out segment

SADR

0000 to 00FF(H)

Read out address #000 to #377(8) (2 byte data, in order of L and

0001 to 0100(H)

Number of read out bytes (2 byte data, in order of L and H)

D1 to DN

See the example

Reading data of system memory (1 byte data x number of

reading data bytes)

[Ex.] To read data from system memory addresses #201 and #202

(201(8) = 81(H), Data in cells: Hexadecimal notation)

Command

Response

"+"

"C"

"L"

"A" CMD

SUB

ATTR

SEG

SADR

ACK

CMD

SUB

ATTR SEG

SADR

#201 #202

[6] Writing system memory

Read data

Write the specified number of bytes of data from the specified address in system memory.

[Write mode assignment]: 2 (When the PC has been stopped with a "halt PC operation F8(H)"

[Communication format]

command)

Command

"+"

"C"

"L"

"A"

CMD

SUB

ATTR

SEG

Response

"+"

ACK

"C"

"L"

"A"

CMD

SUB

ATTR

SEG

Symbol

Data

Details

CMD

43(H)

Function code

SUB

54(H)

Sub code

SEG

08(H)

Write segment

SADR

0000 to 00FF(H)

Write address #000 to #377(8) (2 byte data, in order of L and H)

0001 to 0100F(H)

Number of writing bytes (2 byte data, in order of L and H)

D1 to DN

See the example

Write data of system memory (1 byte data x number of write

data bytes)

[Ex.] To write data 01(H), 01(H) to data from system memory addresses #201 and #202

(201(8) = 81(H), Data in cells: Hexadecimal notation)

Command

"+"

"C"

"L"

"A"

CMD

SUB

ATTR

SEG

SADR

#201

#202

Response

Write data

ACK

CMD

SUB ATTR

SEG

SADR

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