Configuration Handbook - Kamami.pl

Altera Enhanced Configuration Devices.map file contains memory map information. The .hexout can be used byan external processor or PLD to program the flash memory via theexternal flash interface. The .map file contains starting and endingaddresses for boot code, configuration page data, and application code.You can use the .hexout to program blank enhanced configurationdevices and/or update portions of the flash memory (for example, a newconfiguration page). This file uses the Intel hexadecimal file format andcontains 16 Mbits or 2 Mbytes of data. The format of the .map file isshown in Table 3–2.Table 3–2. File Format (.map) Note (1)Block Start Address End AddressBOTTOM BOOT 0x00000000 0x0000001FOPTION BITS 0x00010000 0x0001003FPAGE 0 0x00010040 0x0001AD7FMAIN 0x001FFFE0 0x001FFFFFNote to Table 3–2:(1) All the addresses in this file are byte addresses.To perform partial flash memory updates, select the relevant portions ofthe .hexout using memory map information provided in the .map file.1 Configuration data and processor space data could exist withinthe same physical data block. In such cases, erasing the physicaldata block would affect both configuration and processor data,requiring you to update both. You can avoid this situation bystoring application data starting from the next available wholedata block.DataCompressionEnhanced configuration devices support an efficient compressionalgorithm that compresses configuration data by 1.9× for typical designs,effectively doubling the size of the device. To select the right density forenhanced configuration devices, you should pre-calculate the total size ofuncompressed configuration space.By clicking Options (Convert Programming Files window), you can turnon the Compression mode option in the Programming Object FileOptions window with pof selected as the programming file type, asshown in Figure 3–12.Altera Corporation 3–17April 2007 Configuration Handbook, Volume 2