Abstract: A method of scaling data between memories of different horizontal sizes by calculating an increment expressed as an integer and a fraction relating the horizontal memory sizes, multiplying the fraction by the dynamic range of a fraction portion counter, and successively adding the integer portion in an integer portion counter and the fraction portion in the fraction portion counter, with a carry to the integer portion counter when the fraction portion counter overflows. The corresponding points in the memories are selected based upon the total count in the integer portion counter.

Abstract: A technique for determining and resetting one or more flags in a digital word in memory in which the flags comprise added bits in known locations different from any of the magnitude bits in the word. A sign bit is included and a flag is set by making its bit value differ from that of the sign bit. A digital word from the memory is AND'd with a bit mask to check the flag bit location. A parity routine is run to determine whether the flag bit is set, and if so, the memory location of the word and the type of flag is recorded. The word with the flag bit set is XOR'd with another bit mask to reset the flag bit so that the word may be returned to its memory location with the flag reset.