picbasic +12c508a+soft_stack error

[skimask]

Oh Yeah! Very nice Bruce.

Now that's going to be hard to beat.
If you don't hear from me for a month.
You'll know what happened.

I just checked on my '628A on my breadboard...about a ba-zillion times...
I set up code/hardware to do nothing but RESET, and put Port B onto a bank of LEDs, Vdd on the other side of the LED.
EACH time, Port B came up ZERO...no LEDs lit up, until I set a TRIS bit for output.
So, my submission...
Coming in at 12 bytes...

  list      p=16F628A
  #include "P16F628A.inc"
  errorlevel  -302
  __CONFIG _CP_OFF & _BODEN_ON & _MCLRE_OFF & _WDT_ON & _PWRTE_ON & _LVP_OFF & _INTOSC_OSC_NOCLKOUT

;   clrf  PORTB        ; clear port - not required on my breadboard, might be different on others
   bsf   STATUS,RP0   ; Bank 1
   bcf   TRISB,0      ; RB0 = output
   bcf   OPTION_REG,0 ; 1:64 prescaler to WDT

Left
   sleep             ; go to sleep for 64 * 18mS ~1 second
   rlf   TRISB,F     ; rotate bit across portb from lsb to msb
   btfsc TRISB,7    
   goto  Left
	
Right
   sleep          ; go to sleep for 64 * 18mS ~1 second
   rrf   TRISB,F  ; rotate bit across Portb from msb to lsb
   btfsc TRISB,0
   goto  Right
   goto  Left     ; now rotate back to the left.
	
   End

Somebody else check this out and see what happens.
As I stated, maybe it's my breadboard, maybe it's my 628A (I've only got 1 left), maybe it's the rise time on my PSU.

EDIT: Datasheet says that the port registers come up in an unknown state. Apparently, in this case, I now know my state...