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status has been added for polling function.

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This commit is contained in:
matsutsuka 2007-09-19 12:47:19 +00:00
parent 8d7bb2119c
commit c99b7dc827
3 changed files with 20 additions and 13 deletions
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6
cpu/z80/dev/rs232.h
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@ -27,7 +27,7 @@
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $Id: rs232.h,v 1.2 2007/09/11 12:03:20 matsutsuka Exp $
* $Id: rs232.h,v 1.3 2007/09/19 12:47:55 matsutsuka Exp $
*
*/
/*
@ -51,9 +51,9 @@ void rs232_arch_init(unsigned long ubr);
/*
* An architecture-depend implementation of RS-232C polling.
* @return character, zero if no input.
* @return character, stat == zero if no input.
*/
unsigned char rs232_arch_poll(void);
unsigned char rs232_arch_poll(unsigned char* stat);
/*
* An architecture-depend implementation of RS-232C writing a byte.