PIC18F4550 question VS PIC16F887

[lerameur]

This is the exact program that i use for the PIC16F887. except ansel=0.
using internal osc at 8mhz

K

[mackrackit]

Then change the configs to use the internal...

[lerameur]

I added a 20Mhz crystal and change the line to DEFINE OSC 20
works better, I think I will change the capacitor because the text is off.
Ok now I guess why cant i use the internal oscillator even using this do not work:
OSCCON = %01110000 '8 Mhz
DEFINE OSC 8

[mackrackit]

Does your configs look like this?
This is for the internal

@ __CONFIG    _CONFIG1L, _PLLDIV_5_1L & _CPUDIV_OSC1_PLL2_1L & _USBDIV_2_1L
@ __CONFIG    _CONFIG1H, _FOSC_INTOSCIO_EC_1H
@ __CONFIG    _CONFIG2H, _WDT_ON_2H & _WDTPS_512_2H
@ __CONFIG    _CONFIG3H, _PBADEN_OFF_3H & _MCLRE_OFF_3H
@ __CONFIG    _CONFIG4L, _LVP_OFF_4L & _ICPRT_OFF_4L &_XINST_OFF_4L

[lerameur]

well not really Dave
here is what I get when I compile:
Executing: "C:\PBP2.60\PBPMPLAB.BAT" -ampasmwin -k# -p18F4550 "both.bas"
Executing: "C:\PBP2.60\PBPW.EXE" -ampasmwin -k# -p18F4550 "both.bas"
PICBASIC PRO(TM) Compiler 2.60A, (c) 1998, 2010 microEngineering Labs, Inc.
All Rights Reserved.

ERROR: Unable to execute mpasmwin.Error[118] C:\PBP2.60\BOTH.ASM 184 : Overwriting previous address contents (0000)
Error[118] C:\PBP2.60\BOTH.ASM 184 : Overwriting previous address contents (0001)
Skipping link step. Not all sources built successfully.
BUILD FAILED: Sat Feb 19 14:31:44 2011


this is the code header I used:

@ __CONFIG    _CONFIG1H, _FOSC_INTOSCIO_EC_1H
DEFINE OSC 8

[lerameur]

Dave i tried your code from this thread:
http://www.picbasic.co.uk/forum/showthread.php?t=13981
and it wont even compile, gives me then errors..

ken

[mackrackit]

What are the errors?

[lerameur]

here they are:

Executing: "C:\PBP2.60\PBPMPLAB.BAT" -ampasmwin -k# -p18F4550 "both.bas"
Executing: "C:\PBP2.60\PBPW.EXE" -ampasmwin -k# -p18F4550 "both.bas"
PICBASIC PRO(TM) Compiler 2.60A, (c) 1998, 2010 microEngineering Labs, Inc.
All Rights Reserved.

ERROR: Unable to execute mpasmwin.Error[118] C:\PBP2.60\BOTH.ASM 186 : Overwriting previous address contents (0000)
Error[118] C:\PBP2.60\BOTH.ASM 186 : Overwriting previous address contents (0001)
Error[118] C:\PBP2.60\BOTH.ASM 195 : Overwriting previous address contents (0000)
Error[118] C:\PBP2.60\BOTH.ASM 195 : Overwriting previous address contents (0001)
Error[118] C:\PBP2.60\BOTH.ASM 204 : Overwriting previous address contents (0002)
Error[118] C:\PBP2.60\BOTH.ASM 204 : Overwriting previous address contents (0003)
Error[118] C:\PBP2.60\BOTH.ASM 213 : Overwriting previous address contents (0004)
Error[118] C:\PBP2.60\BOTH.ASM 213 : Overwriting previous address contents (0005)
Error[118] C:\PBP2.60\BOTH.ASM 222 : Overwriting previous address contents (0006)
Error[118] C:\PBP2.60\BOTH.ASM 222 : Overwriting previous address contents (0007)
Skipping link step. Not all sources built successfully.
BUILD FAILED: Sun Feb 20 01:22:40 2011