Problem: Variable PORTB was not explicitly declared

[Lewis Whitacre]

I am a Noobie feeling my way around. New GC Studio installation/latest version.

Used: first-start-sample.gcb

Added #option Explicit

No errors were reported using #CHIP 16f886
Changed to an old PIC part in hand. #CHIP 12f675

[{
   Line 42 PulseOut PortB.5, 100 ms

    "resource": "/c:/GCstudio/gcbasic/demos/first-lew-test.gcb",
    "owner": "gcb",
    "severity": 8,
    "message": "Variable PORTB was not explicitly declared",
    "source": "gcb",
    "startLineNumber": 42,
    "startColumn": 1,
    "endLineNumber": 42,
    "endColumn": 2147483647
}]

Best regards,
Lew

[Angel Mier]

hi Lewis and welcome.
in deed the compiler is telling you that this part (pic 12f675) didn't have a port B (it's a tinny pic with only 6 IO pins) when you read the datasheet of that part you can see that those pins are called GP0, GP1, GP2, GP3, GP4 and GP5. you can use this designations in GC basic, so for example you can use:

dir GP1 out

do forever
   GP1 = 1
   wait 1 s
   GP1 = 0
   wait 1 s
loop

to blink a led on pin 6

happy coding!

Angel

[Lewis Whitacre]

Dang! Embarrassed. I knew that...ahem, more than 10 years ago!

Thank you Angel.