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/*
* This file contains a typical set of register access routines which may be
* used with the z85c30 chip if accesses to the chip are as follows:
*
* + registers are accessed as bytes
*
* COPYRIGHT (c) 1989-1997.
* On-Line Applications Research Corporation (OAR).
* Copyright assigned to U.S. Government, 1994.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* $Id$
*/
#include <rtems.h>
#ifndef _Z85C30_MULTIPLIER
#define _Z85C30_MULTIPLIER 1
#define _Z85C30_NAME(_X) _X
#define _Z85C30_TYPE unsigned8
#endif
/*
* Z85C30 Get Register Routine
*/
unsigned8 _Z85C30_NAME(z85c30_get_register)(
unsigned32 ulCtrlPort,
unsigned8 ucRegNum
)
{
_Z85C30_TYPE *port;
unsigned8 data;
rtems_interrupt_level level;
port = (_Z85C30_TYPE *)ulCtrlPort;
rtems_interrupt_disable(level);
if(ucRegNum) {
*port = ucRegNum;
}
data = *port;
rtems_interrupt_enable(level);
return data;
}
/*
* Z85C30 Set Register Routine
*/
void _Z85C30_NAME(z85c30_set_register)(
unsigned32 ulCtrlPort,
unsigned8 ucRegNum,
unsigned8 ucData
)
{
_Z85C30_TYPE *port;
rtems_interrupt_level level;
port = (_Z85C30_TYPE *)ulCtrlPort;
rtems_interrupt_disable(level);
if(ucRegNum) {
*port = ucRegNum;
}
*port = ucData;
rtems_interrupt_enable(level);
}
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