Return main program flash CRC

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Erase all flash contents except boot sector

ASCII	GS SO
Hexadecimal	1D 0E
Decimal	29 14

Causes the entire flash memory to be erased.

The printer returns ACK if the command is successful; NAK if it is unsuccessful.

Exceptions

Available only in download mode.

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.

Download to active flash sector

ASCII	GS DC1 aL aH cL cH d1… dn
Hexadecimal	1D 11 aL aH cL cH d1… dn
Decimal	29 17 aL aH cL cH d1… dn
Value of aL:	low byte of the address
Value of aH:	high byte of the address
Value of cL:	low byte of the count
Value of cH:	high byte of the count
Value of d:	data bytes, 0–255

Value of n (for number of data bytes)		Range of address (aL aH)	Range of count (cL cH)

((cH * 256) + cL)		0000–FFFF (hexadecimal)	0001–FFFF (hexadecimal)
Range:	Addresses run from 0 to 64K.

Contains a start address (aH × 256 + aL) and count (cH × 256 + cL) of binary bytes to load into the selected sector, followed by that many bytes. The start address is relative to the start of the sector. Addresses run from

0 to 64K. The count must always be 256.

The printer may return one of several responses. ACK means that the data was written correctly and the host should transmit the next block. NAK means that, for some reason, the data was not written correctly. This could mean that

Continued . . .

A776 (B780) Programming Guide

A776-PG00001 C 12/09

B780, A776 specifications

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Security is a major focus of the Cognitive Solutions A776. The platform is equipped with advanced encryption protocols and compliance measures to ensure that sensitive data is protected against breaches and unauthorized access. This commitment to security helps businesses maintain customer trust and safeguard their competitive advantage.

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Cognitive Solutions B780 Erase all flash contents except boot sector, Erase selected flash sector

Models: B780 A776

128 Chapter 5: Programming commands

Erase all flash contents except boot sector

ASCII