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Am 22.09.2013 16:46, schrieb Rich B:

> Hello,
> 
> stdio.h assumes you have a computer with a screen, a keyboard, and
> a file system.  A bare metal microprocessor has input and output
> pins and usually a USART serial port.  You need to write your own
> input and output routines accessing the hardware of the uP.
> stdio.h simply doesn't apply to a uP.  comment out the #include
> line and see what happens.
> 
> Rich.

Uh, sdcc does have an stdio.h and provides printf(), etc. The user
only has to provide putchar() and getchar() for I/O.

Philipp

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