Mmc_Fat16_Init take as parameter CS line (chip select)

You have that const value in help, but for some reason it is missing in library. We will post you a values.

Try with F1 Help, it will help you alot.

Rename that interrupt, to be procedure, and that just ORG with that address. I think that this will help.

Try next code before asm: This line tells compiler that PIR1 is used and to link that register.

I tested on EasyPIC4 with 18F452 @8Mhz, 2400bps, it's working. Check config word.

We are planning to make totally new bootloader and it will save settings as you wish.

My bad, put in main program next: If you do not use SREG in you main program, linker does not link SREG, and when you make interrupt rutine, compiler is saving SREG - but it's not linked than.

You have to use SREG in main program to enable interrupt, so it will work than.

This code is working with me, please post all code, not just segment and use "code" - you have a button in menu upper. Or you can email to me all project at: vanja@mikroe.com ps. code : asm SEI end; asm CLI end; You do not need, because in ver 4.00, compiler is taking care of it, all registers that ...

Please post you code your code that is not working, so we can see what a problem is, and tell us what chip are you using and clock.

I remember that we had a problem communicating with MMC/SD card on lower frequency than 2 MHz (SPI). Try with 16MHz crystal.

For debugging protocol you can use WireShark or Ethersnoop.

What chip are you using?

Please be patient, we have very small delay, but we are doing our best. Like
Naftie said:

it's all worth the wait

You will have to find out “why”, what line is causing a problem, because we don't have a source.

We will fix that problem ASAP.