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PIC16F1939

 
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georpo



Joined: 18 Nov 2008
Posts: 278
Location: Athens, Greece.

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PIC16F1939
PostPosted: Sat Sep 29, 2018 10:51 am     Reply with quote
Hello,

I am using a PIC16F1939 and command:

Code:

set_tris_a (0b00111001);


gives this in disassembly listing:
Code:

set_tris_a (0b00111001);
  0003    3039     MOVLW 0x39
  0004    0065     TRIS 0x5


Register TRISA is at address 0x08C and not 0x05.

Am I missing sometjing here?

Thanks!
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George.
Ttelmah



Joined: 11 Mar 2010
Posts: 19215

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PostPosted: Sat Sep 29, 2018 12:45 pm     Reply with quote
Look up the TRIS command in the data sheet. It is not the same as a standard move.

Quote:

When ‘f’ = 5, TRISA is loaded.
When ‘f’ = 6, TRISB is loaded.
When ‘f’ = 7, TRISC is loaded.


From the data sheet entry for this command.
georpo



Joined: 18 Nov 2008
Posts: 278
Location: Athens, Greece.

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PostPosted: Sat Sep 29, 2018 12:51 pm     Reply with quote
Thanks for that!

Rolling Eyes
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George.
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