Kontron KTAM3874-pITX - Manual (Page 23)

KTD-S0057-I Page 19 VESA® DisplayIDTM
KTAM3874/pITX Software Guide
Serial Download
The following example demonstrates a serial download via the ymodem protocol:
The KTAM3874/pITX board is connected to a desktop computer with a suitable terminal program (e.g.
Hyper-Terminal or TeraTerm). The file size of
wvga.kdb amounts 81 bytes.
For downloading the file into memory type the following standard U-Boot command line
loady
Now U-Boot waits for reply. User input to the desktop terminal program starts the download session. After
the download of
wvga.kdb ends you can control the result with the md command
md.b 80009000 80
Now you can load the memory content into the EEPROM. Type the new KONTRON U-Boot command
writedid 80009000 51
The 'count' respectively the size argument is a very important parameter. Do not use another value as the
file size of your DisplayID
TM file.
Note: The memory parameter of
md.b and writedid depends on the environment entry loadaddr because
loady uses this definition as base address, for example if loadaddr equals 0x81000000 the new KONTRON U-
Boot command changes to
writedid 81000000 51