Just wondering about other language for PIC

[tinhnho]

Hi folks,

I have taken fews courses about C, Pascal( long time ago) and FORTRAN. I know that there is a method for parameter passing used by many FORTRAN
compilers is that of an In-Line Argument List. In this method the parameter values or address pointers are stored in a list following a 'call' instruction.
And I'm just wondering how come this method will now work for an embedded system using a PIC device ?.

Sorry if my question is silly question , but just curiosity. Thanks

 

[kchriste]

You can do this with C on a 18F series PIC but most of the smaller PICs cannot pass variables on the stack so I would guess that the pseudo code generated by the compiler passes them via global variables.

 

[Oznog]

PIC16 series does not work well with C, but it will work. Microchip has no C compiler product for this series but others do make compilers, with varying effectiveness.
PIC18 series was designed to be more C-friendly. Code can compile to quite a reasonable size and speed. Microchip offers a quality C compiler for free.

24F/dsPIC30F/dsPIC33F are much better still, with a stack with greater capabilities not to mention lots of other spiffy capabilities- 16 bit datapath, 16/32 bit math/data manipulations, hardware divide.

 

[Sceadwian]

There's a language called forth that might be what you're looking for. I believe there have been several micro controller versions of both forth assemblers and real time forth interpreted languages than run serially. It's basically assembly language with macros to interprete stack based user input into machine langauge for the given processor. It's almost 'logo' with extensions.

 

[Sceadwian]

forth however is another one of those teaching languages. There's still a huge following of forth users out there now, enough so that PIC and micro controller versions of it pop up obviously... But still, it's not overly practical except for the users that learn it well over time..

 

[Nigel Goodwin]

forth however is another one of those teaching languages. There's still a huge following of forth users out there now, enough so that PIC and micro controller versions of it pop up obviously... But still, it's not overly practical except for the users that learn it well over time..

I thing 'huge' following is a bit hopeful?, but there are PIC versions available - but it's NOT a good language for a PIC as it's probably the most stack heavy language there is?. I've still got a version of Forth that runs on a MicroTan 65!.

 

[tinhnho]

thanks for the output, i understand now.

 

[3v0]

While forth is useful in teaching RPN it not a teaching language in the sense of Pascal. Forth is a "grass-roots effort unsupported by any major corporate or academic sponsors".
https://www.forth.com

3v0