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113 lines
4.5 KiB
113 lines
4.5 KiB
Copyright (c) 2005 Juan Pablo D. Borgna <jpborgna en inti gov ar>
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Copyright (c) 2006-2007 Salvador E. Tropea <salvador en inti gov ar>
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Copyright (c) 2005-2007 Instituto Nacional de Tecnología Industrial
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Commands and blocks:
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The template files have block commands and operation
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commands. The block commands start with two substract
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signs "--" and the operation are betwin dollar signs "$".
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The block commands mark the excecution of a block and the
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end of the block must be identifyed with the instruction
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"--END".
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Internal variables:
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The next internal variables are provided wich can be used
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indicating their name betwin dollars signs "$" or modified
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if a value is assigned using parentesis signs.
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Ex.: $ADDRESS(0x00)$ asigns this variable the value 0x0000.
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$ADDRESS$ :
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Accumulator useful at the time of incrementing a memory address.
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$STEP$ :
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Value on wich $ADDRESS$ variable will be incremented.
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$BSIZEB$ :
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Amount of bytes of the bitstream file.
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$BSIZEB2$ :
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2 * amount of bytes of the bitstream file.
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$BSIZE$ :
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Amount of bits of the bitstream file.
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Note: BSIZE an STEP are related. BSIZE is the size of the cache
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used to store the data before flashing the device. Each memory
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address contains some bits that's a word, the STEP is the size of
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the cache in words. So BSIZE=STEP*word_size.
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For the XC18V: 32*64=2048 o 32*128=4096.
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$MSIZE$ :
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Taken from the msize field from the device definition in the
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DEVICES file.
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It contains the last memory position of a device with memory.
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$ID$ :
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Taken from the id field from the device definition in the DEVICES
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file.
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It contains the IDCODE of the selected device.
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$IDMASK$ :
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Taken from the idmask field from the device definition in the
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DEVICE file.
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It contains the mask wich be used in the comprobation of the IDCODE
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Block commands:
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--LITERAL START :
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It indicate that in the output file must be copied the content
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of this block until the end is found "as is".
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If an operational command is found inside it is excecuted.
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--REPEAT START :
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It indicate that this block will be repeated until the end of
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the bitfile is reached.
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This block must have inside some operational command wich
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reads information from the input bitfile, if not, the end of
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this will never be reached and the progran will keep
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repeating this block until there is no more disk space.
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With each block iteration the variable $ADDRESS$ is
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incremented by $STEP$.
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--REPEAT UNTIL value :
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It indicates that this block will be repeated until the
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variable $ADDRESS$ reach the value passed as parameter.
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With each block iteration the variable $ADDRESS$ is
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incremented by $STEP$.
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The value passwd as parameter must be $STEP$ multiplo,
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or the exit condition will never be reached and the
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program will keep repeating this block until there is
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no more disk space.
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Instead of value you can use a variable:
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Ej.: --REPEAT UNTIL MSIZE
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--END :
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It indicates the end of a LITERAL, REPEAT or REPEAT UNTIL block.
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Opeation commands:
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The operation commands may recive as an argment the name of
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a variable instead of a constant:
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Ej.: $FILL(0xFF,BSIZE)$
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$DATA(ndatabytes)$ :
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Writes in the output file a ndatabytes amount of bytes
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from the input bitfile expressed in hex.
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$DATA_INV(ndatabytes)$ :
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Writes in the output fila a ndatabytes amount of bytes
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from the input bitfile inverting the order, expressed
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in hex.
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$FILL(VAL,TIMES)$ :
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Writes TIMES times the value VAL expressed in hex in the
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output file.
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$REWIND$ :
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Rewinds the bitfile to the first stream byte so it can be used in a
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new block.
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