asm-> option keyword

[gio42]

trying to compile this chunk of code under CCS PCH + MPLAB 7.51

#include <18f252.h>
....
...
void main()
{
......
#asm
movlw 0b00110111
option
#endasm
.....

getting error :
Executing: "D:\Prog\PCH\Ccsc.exe" "FREQ.C" +FH +LN -T -A -M -Z +Y=9 +EA
*** Error 95 "D:\work\FREQ\FREQ.C" Line 298(2,8): Expecting an opcode mnemonic option


INSTEAD same code with 16F628 + PCM : no error
What's am doing wrong ?
Thanks folks.
Giorgio

[Ttelmah]

Look at the list of supported mnemonics in the help file. Look in particular at the differences in the list for the PIC18, versus the 12, and 14bit chips. Note the _lack_ of the 'option' keyword. Look at the data sheet for the 18 chip. Look at the memory organisation. Note the _lack_ of an 'option' register...
Everything that was done with the option register on the older chips, is done with different controls on the 18 chips. Even on the 16 chips, directly accessing 'option' is not needed (the compiler allows you to change all these 'options', with it's own keywords).

Best Wishes

[gio42]

... Hi Ttelmah , message received loud and clear.
Thanks
Giorgio