PORTA - Keeps getting weirder

[Pimenta]

Hi again,

Here is a piece of code:

#picaxe 40X1

	sertxd ("BOOTING UP",cr,lf)

main:

	if porta pin0 = 1 then
	
		sertxd("pin0",cr,lf)
	endif
	
	if porta pin1 = 1 then
	
		sertxd("pin1",cr,lf)
	endif
	

	readadc 5, b0

	if b0 > 0 then
	
		sertxd("ADC5 ",#b0,cr,lf)
	endif

	readadc 6, b0

	if b0 > 0 then
	
		sertxd("ADC6 ",#b0,cr,lf)
	endif
	
	readadc 7, b0

	if b0 > 0 then
	
		sertxd("ADC7 ",#b0,cr,lf)
	endif		

	
	goto main

Provided that:

- A0 to A3 are pulled down (10k res.)

Then:

A0 and A1 work well has digital inputs BUT
When I put a0 high (shunt to +5V) I get:

BOOTING UP
ADC6 255
ADC7 255
ADC5 155
ADC6 255
ADC7 255
pin0
ADC5 255
ADC6 255
ADC7 255
pin0
ADC5 255
ADC6 255
ADC7 255
pin0
ADC5 158
ADC6 17
ADC7 22

similar thing to a1, only instead of "pin0" I get pin1 plus the ADC noise

Now when I punt A2 or A3 high I get:

„3íc ä¿£cÿ
C4h€þ255
ADC6€ÿa_G“ø
Ã4°gñÄ¿eˁ
ƒšÐ͐255
ADC6 59
ADC7 54
ADC5 10

Ãt*gñÄ¿™£ø
ƒ4*iñÄ¿eeŒðADC6 255
ADC7 d?iˁ
ƒt°iù2i¥¬ 
ƒ4°lñÄ¿ee¦üADC7 俍ceŒð
ƒ4*iñÄ¿eeŒà
ƒ4°lñÄ¿eeŒð
Ãt°gñÄ¿eˁ
‡t°i€þÄ¿eeŒð
‡4°lñÄ¿eeŒð
ƒ4*gñÄ¿eˁ
‡4°iñÄ¿eeŒð
‡4*lñÄ¿eeŒà
ƒ4*gñÄ¿eˁ
‡4*iñÄ¿eeŒð
ƒ4*lñÄ¿eeŒð
ƒt°gñÄ¿eˁ
ƒ4*iñÄ¿eeŒð
‡´h3ä255
ADC7 211
ADC5 101
ADC7 17

YES, lots of garbage and with NO REBOOT of the PIC (note that the text
"BOOTING UP" doesn't appear )



Any thoughts?

Thanks,

Pimenta