Beta 7.3.0 - compiler and software simulator

[janni]

Compiler does not recognize new ADDFSR and SUBFSR instructions .

Simulator nicely emulates jumps using "$+n" over MOVFFL instruction when n equals 6 by adding execution of a NOP (two last words of MOVFFL are a special form of NOP) . It'd be even better if it worked also for n=4 (two NOPs) - unfortunately, in such case simulator stalls (as well as for MOVFF or other two-word instructions).

BTW, software simulator still doesn't emulate the DC bit in STATUS register (K42 and K83 processors do not even have this bit declared in their definition files!).

[petar.suknjaja]

Hi Janni,
Thank you for reporting this,
I'll check this out and pass it to our developers.
If you have anything to share with this, a code or a snippet, I would greatly appreciate.

Kind regards,
Petar

[janni]

Hi Petar,

About the most important thing - the new assembly instructions not being recognized - there's really nothing to add.

As for the assembly jump or DC bit, I guess the developers well know about it. Still, here's an example

Code: Select all

asm {
         movlw   10
         addlw   6
         btfss   STATUS,DC   // DC is not being set
         nop

         bra     $+6
         movffl  R0,R1       // simulator executes one nop - very good

         bra     $+4         // simulator stalls here
         movffl  R0,R1       // two nops should be executed

         bra     $+4         // simulator stalls here
         call    sub         // one nop should be executed
}

[petar.suknjaja]

Hi,
This is reported to our devs.
Again, thank you.

Kind regards,
Petar