No need to change the include file, use the modified blink sample below,
which should work


--
include 16f505                     -- target PICmicro
--
-- This program assumes that a 4 MHz int osc.

pragma target clock 4_000_000      -- oscillator frequency
--
pragma target OSC      INTOSC_NOCLKOUT           -- Int osc, no clockout
pragma target WDT      DISABLED                  -- watchdog
pragma target MCLR     INTERNAL                  -- internal reset
--
-- The configuration bit settings above are only a selection, sufficient
-- for this program. Other programs may need more or different settings.
--
--
enable_digital_io()                 -- make all pins digital I/O
--
-- A low current (2 mA) led with 2.2K series resistor is recommended
-- since the chosen pin may not be able to drive an ordinary 20mA led.
--
alias  led       is pin_B0          -- alias for pin with LED
--
pin_B0_direction = OUTPUT
--
forever loop
   led = ON
   _usec_delay(100_000)
   led = OFF
   _usec_delay(400_000)
end loop
--

Sunish

On Mon, May 11, 2020 at 4:04 AM Zet Weeh <[email protected]> wrote:

> Hi
> I never worked with small PIC's.
> I want to use the internal oscillator of the 16F505.
> Is it correct I need to change in the library 16F505 in the oscillator
> part:
>
> pragma fuse_def OSC 0x7
>
> in
>
> pragma fuse_def OSC 0x4
>
> Best regards,
> Peter
>
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