PIC18f2455 blink

[iugmoh]

Hi all,
I need your help in begining with PIC18F2455 using PICbasic , I have alot of errors , I need a simple programm to beging with this IC.

[skimask]

Hi all,
I need your help in begining with PIC18F2455 using PICbasic , I have alot of errors , I need a simple programm to beging with this IC.

The simple program would be the same simple program that is probably used for every other PIC you've programmed so far...

But...we don't know what you're errors are...so.............................

[iugmoh]

When I compile the programm I have this error
MPASM Required

so i read and find that I must install MPLAB with MPASM , so it's woking now

[skimask]

When I compile the programm I have this error
MPASM Required

so i read and find that I must install MPLAB with MPASM , so it's woking now

Believe it or not...the answer you seek is in the PBP manual near the beginning...
I know...not what you want to hear...but...well...there you go.

[iugmoh]

Another question , I made a project on PIC16f877a but there isn't sufficient memory space to add additional code, so I change to PIC18F452 and make compile and it's compiled without any errors , IF I programm my chip and try practically Is't working ?

[skimask]

Another question , I made a project on PIC16f877a but there isn't sufficient memory space to add additional code, so I change to PIC18F452 and make compile and it's compiled without any errors , IF I programm my chip and try practically Is't working ?

The 16F877A and 18F452 have different registers, different options, different modules, different things that need to be configured before use.
Something made for one probably isn't going to port DIRECTLY over to another PIC without a few register changes, configuration changes, from here to there.
Check the datasheets for the differences.
And if it works on the '877, go thru the code. There are ways of optimizing memory use on the '877 (both the program and ram space) to get things to fit.
Are you out of program space or ram space?