AMX 68000, Target Guide cjcfin8 cjcfin8 cjcfin16 cjcfin16 cjcfin32 cjcfin32

B-10

DAK

AMX 68000 Target Guide

cjcfin8 cjcfin8cjcfin16 cjcfin16cjcfin32 cjcfin32

Purpose Read an 8, 16 or 32-Bit Input Port

Used by n Task n ISP n Timer Procedure n Restart Procedure n Exit Procedure

Setup Prototype in file

CJZZZTF.H or macro in file

CJZZZCC.H.

#include "CJZZZ.H"

CJ_T8 CJ_CCPP cjcfin8(void *port);

CJ_T16 CJ_CCPP cjcfin16(void *port);

CJ_T32 CJ_CCPP cjcfin32(void *port);

Description port is the address of an 8, 16 or 32-bit memory-mapped device input

port.

Interrupts o Disabled o Enabled o Restored

Returns Cjcfin8 returns an 8-bit signed value.

Cjcfin16 returns a 16-bit signed value.

Cjcfin32 returns a 32-bit signed value.

Example #include "CJZZZ.H"

/* Console status register */

#define CONSTAT ((CJ_T8 *)0xFFFA002DL)

/* Console data register */

#define CONDATA ((CJ_T8 *)0xFFFA002FL)

void CJ_CCPP conout(char ch) {

/* Wait for ready */

while ( (cjcfin8(CONSTAT) & 0x80) == 0 )

;

/* Write character */

cjcfout8(CONDATA, (CJ_T32)ch);

}