7. MessagesUniSite-xpi User Manual 7-51Partial or No Transfer PerformedProbable Cause SolutionI/O Address Offset =FFFFFFFF and first file addressis not the lowestAbsolute translation: To transfer data from file to corresponding RAMlocations, enter an I/O Address Offset value of 00000000.Offset translation: If file data must begin at the programmer RAMlocation 0000H, find the lowest file address and use that value as theI/O Address Offset.Improper use of Begin RAMAddress and/or User DataSizeYour file must be transferred to proper locations in programmer RAM.Edit Programmer RAM to determine whether data has been transferredproperly. If it hasn’t, make sure your Begin RAM address and User DataSize parameters are appropriate. Refer to the Download Data section ofyour User Manual for definitions and usage.File addressing places dataoutside RAM address rangeView your file with an ASCII editor and look for addresses that exceedyour programmer’s RAM address range. To convert the decimal valueof your programmer RAM size to its hex equivalent, refer to the “DataI/O Memory Chart” Application Note.Additional Information This warning message appears in the download screen (reached viaMore/Transfer/Download from the Main Menu) and indicates that aportion of your file’s data has not been transferred into programmerRAM.Transfer problems of this nature occur more often with files that havebeen generated with addresses in non-sequential order, where thelowest address is embedded somewhere in the middle of the file.More About I/O Address Offset: In general, the following formularepresents where in programmer RAM data will be transferred.Physical RAM address = [(File Address) - (I/O Offset Address)] +(Begin RAM Address)The default I/O Address Offset, FFFFFFFF, does not represent anumerical hex value. It is simply a flag to indicate that the first addressin your file will be used as the I/O Address Offset. By default, theprogrammer interprets the first file address as the I/O Address Offsetand subtracts that value from all of the remaining addresses in the file.Consequently, the data contained in address locations lower than thefirst address will be lost.
