MEL PICBASIC Forum - PICBASIC Compiler

• ### Recent Forum Posts

#### Re: Doing something at predefined amount of steps?

No, 200-300=65436.
65435 is -101 in two's complement because 65435+101 = 65536 which, when being truncated to 16 bits is 0.

If what you want is the difference between the two numbers while not...

HenrikOlsson Yesterday, 23:01

#### Re: Doing something at predefined amount of steps?

Thanks Henrik, so Say A=200 B=300, C in this case will be 65535-100=65435, right? So if I take 65535 and minus it result, I should receive correct difference between A and B, right?

CuriousOne Yesterday, 18:46

#### Re: Doing something at predefined amount of steps?

towlerg Yesterday, 18:13

#### Re: Doing something at predefined amount of steps?

It will wrap around, 0-1=65535 provided the variable where the result is stored is a WORD.

HenrikOlsson Yesterday, 17:23

#### Re: Doing something at predefined amount of steps?

Oh and by the way, currently I don't have access to machine with PBP, what will happen if C=A-B and B is > A ? all variables are word length. I need to determine difference between A and B, but...

CuriousOne Yesterday, 16:56

#### Re: Doing something at predefined amount of steps?

Yes, I meant exactly that one.

In my case, there will be 16F886 running at 8mhz and maximum frequency will be around 2khz, so I guess, modulo variant will also work. Will assemble test circuit...

CuriousOne Yesterday, 16:54

#### Re: Doing something at predefined amount of steps?

Wasn’t it just something like this?
not even timing of course because every fifth iteration takes slightly longer to execute, but could be balanced up if it mattered.

variable var word...

Art Yesterday, 15:30

#### Re: Doing something at predefined amount of steps?

I don't know for sure but since it involves division my guess is that this is slower. Speed isn't always everything though.

Tell you what, why don't you try both ways and measure the difference,...

HenrikOlsson Yesterday, 15:01

#### Re: Doing something at predefined amount of steps?

Thanks! this is way better and simpler. Speaking speed-wise, will this be faster in execution than my code with additional variable?

CuriousOne Yesterday, 14:42

#### Re: Newbie Manchester Coding question

Duh, yup, that was it [slapping forehead].

Cheers,

Troy

rocket_troy Yesterday, 14:22
• # PICBASIC Compiler

### PICBASIC PRO™ Compiler 3.0

PICBASIC PRO™ Compiler 3.0

PBP is the industry standard BASIC programming language for Microchip's PIC microcontrollers. No other BASIC compiler for PIC MCUs boasts the 15-year success in both commercial and non-commercial environments.

Version 3 is a major evolution of this popular product, making it even more capable, stable, and reliable. All the years of development culminate here, with many new capabilities and improvements. Come see why thousands of engineers, educators and hobbyists have depended on PBP for more than a decade.

* Supports more than 500 microcontrollers.
* Newly revised 300-page manual.
* MPLABX compatible
* Available in different editions from £31.82 to £171.94