NCR 7197 II SERIES - Page 220

7197 Series II Owner’s Guide Chapter 6: Commands
August 2011
195
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, from 1 to n
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 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 communications failed or that the
write to Flash failed. The alternatives seem to be to retry the block or halt loading and
assume a hardware failure.
Value of n (for number of data bytes) Range of Address (al ah) Range of Count (cl ch)
((ch * 256) + cl) 2000-FFFF (hexadecimal) 0001-0400 (hexadecimal)
Range: Addresses run from 0 to 64K.
Related Information:
Available only in Download Mode.