I have seen pic architecture. It says 8 level stack deep & that it. Some lower end MCU have 2 level stack deep.

Only one interrupt vector table for all inerrupts in pic16F/12F or other series.


Then why should someone prefer pic over pic.

 

It highly depends on the application. Don't try to start an argument for one over the other, it will always end badly. As Dave Jones of the EEVblog says,

IT DOESN'T BLOODY WELL MATTER!

https://www.youtube.com/watch?v=DBftApUQ8QI

 

Features, price, support.

Usually any two out of three is good enough. Most people in hobby community find all three because of their smaller and/or more limited needs.

 

I have seen pic architecture. It says 8 level stack deep & that it. Some lower end MCU have 2 level stack deep.

Only one interrupt vector table for all inerrupts in pic16F/12F or other series.


Then why should someone prefer pic over pic.

The lower end MCUs are only interesting for some mass produced circuits. When you do electronics decently you'll spend 100s to 1000s, so if you buy some $2 or $3 controllers, you'll be doing well with them.

I have changed to PIC32 recently, only use some advanced 8bit PICs, and baseline PICs too- the number of stacks is often unimportant as well you often dont really need interrupts.

 

I'm not sure why you would need a stack more than 8 levels deep, the program is getting pretty convoluted if you get that far. From what I've seen there isn't much difference in the range of chips produced by major manufacturers.

 

I prefer chocolate ice cream -- unlike those evil vanilla ice cream eating weirdos.

 

I prefer chocolate ice cream -- unlike those evil vanilla ice cream eating weirdos.

I will match your chocolate ice cream and raise you chocolate chunks.

 

I'm not sure why you would need a stack more than 8 levels deep, the program is getting pretty convoluted if you get that far. From what I've seen there isn't much difference in the range of chips produced by major manufacturers.

Maybe you never wrote more complex programs? Some PICs have a memory stack, so you can also pass parameters on the stack.

8 stacks is not that much actually. and then there's software stack too.

 

I will match your chocolate ice cream and raise you chocolate chunks.

Ever try the trinity chocolate from Publix? Mmmmmm....heaven!

 

Ever try the trinity chocolate from Publix? Mmmmmm....heaven!

HAI
CAN HAS STDIO?
I HAS A VAR
IM IN YR LOOP
   UP VAR!!1
   VISIBLE "I can haz choclat"
   IZ VAR BIGGER THAN 10? KTHX
IM OUTTA YR LOOP
KTHXBYE

 

Ever try the trinity chocolate from Publix? Mmmmmm....heaven!

You're kidding. It makes you fat, destroys your thees, and creates unjust profit for the dentists!!!

 

...unjust profit for the dentists!!!

I don't believe in "unjust profit".

 

HAI
CAN HAS STDIO?
I HAS A VAR
IM IN YR LOOP
   UP VAR!!1
   VISIBLE "I can haz choclat"
   IZ VAR BIGGER THAN 10? KTHX
IM OUTTA YR LOOP
KTHXBYE

That's C, right?

 

that's c, right?

i can has a uchar

 

I don't believe in "unjust profit".

Why not? Their prices are fixed by insurance companies, which provide 90% of the clients. They cannot neither decrease them to attract more customers, nor increase them if the quality of service they provide is better than for the others. Insurance companies fix their prices through re-insurers. Thr re-insurers, in turn, are regulated by the government, which is influenced by the lobbyists hired by dentists, which promote unreasonably high prices. How's that just?

 

You can get away with small stacks quite easily.
Instead of :
CALL A
CALL B
RETURN
You can use:
CALL A
GOTO B

 

You can get away with small stacks quite easily.
Instead of :
CALL A
CALL B
RETURN
You can use:
CALL A
GOTO B

On a baseline PIC this will take about 62 extra cycles each time since reloading the paging bits and the PC is quite complicated.

Indeed you dont need any real hardware stack it is just much faster if you have it.

 

People who run out of stack on little 8-bit microcontrollers should learn more about little 8-bit microcontrollers.

Reminds me of the way bad drivers "run out of road".