Instruction manual

A758 Owner’s Guide Chapter 7: Programming Guide
September 1999 204
Return Microprocessor CRC
ASCII
: GS BEL
Hexadecimal
:1D 07
Decimal:
29 7
Returns the CRC calculated over the boot sector code space.
Formulas:
ACK <low byte> <high byte>
Erase the Flash Memory
ASCII
:GS SO
Hexadecimal
:1D 0E
Decimal:
29 14
Causes the entire Flash Memory (except the boot) to be erased.
The printer returns ACK if the command is successful; NAK if it is unsuccessful.
Exceptions:
Available only in Download Mode.
Return Main Program Flash CRC
ASCII
:GS SI
Hexadecimal
:1D 0F
Decimal:
29 15
Returns the CRC calculated over the Flash firmware code space. The format of
the response is ACK <low byte> <high byte>.
Erase Selected Flash Sector
ASCII
: GS DLE
n
Hexadecimal
: 1D 10
n
Decimal:
29 16
n
Value and Range of
n
:
0 – 7 = 512K bytes Flash
0 – 15 = 1M bytes Flash
0 – 31 = 2M bytes Flash
Erases the previously selected sector. The printer transmits ACK when the sector
has been erased. If the previous sector is not successfully erased, or if no sector
was selected, the printer transmits NAK.
Exceptions:
Available only in Download Mode.