I deleted the code for two reasons, no on seems to understand it or cares and it was part of code that I most likely should not have posted in the first place. Using Intrinsic functions that obviously I see now only little here understand would help the bloat lag.Īnyways. The line is also at logic 1 when nothing is being transmitted (idle). One common scheme is to use one start bit (0), 8 data bits, and 1 stop bit (1). Therefore, the coefficients of the CNN can be embedded into the bit-serial multipliers and distributed arithmetic can be used significantly reducing the FPGA resources used by the implementation.

fpc makes a ping out of using common pascal code for doing this where Delphi seems to understand what it is you are doing and generates ASM code that for most part is hard to beat. In many (older) serial communications protocols, each data byte is sent along with a start bit and a stop bit, to help the receiver delimit bytes from the stream of bits. The code I posted, which I deleted is used currently now in an application (industrial application) where that code actually compiles down very nicely (efficiently ) in Delphi but will not in fpc. The advantage of on-line arithmetic over classical bit-serial arithmetic is 1) the ability to compute quotients, square roots, trancendental functions in serial mode, and 2) the fact that the most interesting digits are generated first. When shifting a group of objects that in bit format with each other this is need, you need to record the bit that got lost with one shift so that it can be inserted into the next object in line that belongs to the group.Ĭode like this is used in shifting 1 bit images, bit stuffing, Serial link compression etc. most significant digit first arithmetic that requires the use of a redundant number system. The idea is to shift in a Carry over from the last operation and thus produce a Carry (expended bit) flag in case one got shot out the back when shifting the bits left or right. I guess this subject must be over the general population's heads or I am just taking it for granted that others should know better. It has nothing to do with what CPU has a carry flag etc.

Bit serial arithmetic