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Just updated from 5020 to 5023.

 
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hmmpic



Joined: 09 Mar 2010
Posts: 314
Location: Denmark

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Just updated from 5020 to 5023.
PostPosted: Sun Mar 30, 2014 8:40 am     Reply with quote

Hi

Just updated from 5020 to 5023.

I always make a *.lst compare after an update, and some tests.

I found this, in the old 5020 the GIE was disabled before the table read, and now it is not. Is that ok. If an int came in in the middle can it make problem?

5020:
Code:
................... #device PIC18F26K22
000AE:  MOVFF  INTCON,0D
000B2:  BCF    INTCON.GIEH
000B4:  CLRF   TBLPTRH
000B6:  ADDLW  C8
000B8:  MOVWF  TBLPTRL
000BA:  MOVLW  00
000BC:  ADDWFC TBLPTRH,F
000BE:  TBLRD*+
000C0:  MOVF   TABLAT,W
000C2:  BTFSC  0D.7
000C4:  BSF    INTCON.GIEH
000C6:  RETURN 0


5023:
Code:
.................... #device PIC18F26K22
000AE:  CLRF   TBLPTRH
000B0:  ADDLW  BE
000B2:  MOVWF  TBLPTRL
000B4:  MOVLW  00
000B6:  ADDWFC TBLPTRH,F
000B8:  TBLRD*+
000BA:  MOVF   TABLAT,W
000BC:  RETURN 0


Advise?
Ttelmah



Joined: 11 Mar 2010
Posts: 19539

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PostPosted: Sun Mar 30, 2014 9:22 am     Reply with quote

It's a good thing....
It was the core cause of an earlier complaint, where the GIE bit remained accidentally cleared. Since the table pointers are saved when interrupts are called, it was pointless...
hmmpic



Joined: 09 Mar 2010
Posts: 314
Location: Denmark

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PostPosted: Sun Mar 30, 2014 10:06 am     Reply with quote

Understood, thanks.
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