#include <def21161.h>

#define JINX  0x1FF000	
#define PAUSE 0xfffFFF 	
#define size 1

.section/dm dm_data;

.section/pm pm_code;

start:
bit set MODE1 IRPTEN | CBUFEN; 	// set circular buffer enable 
								// and allow global interrupts

r0=0x00000000; 					// initially clear SPI control register
dm(SPICTL)=r0;
nop;							// wait one instruction
							
//get ready bits in ustat1 for start SPI
bit set ustat1 SPIEN | DF  | WL32 | BAUDR5 | SGN | GM ;
nop;							// wait one instruction
dm(SPICTL) = ustat1;			// enable SPI
nop;							// wait one instruction
// test receive buffer status to determine when it is ok to read from SPIRX
test:
ustat1=dm(SPISTAT);				// get status SPI
bit tst USTAT1 RXS0;			// test bit RXS0
if Not TF jump test; 			// if SPIRX not full jump to test
								// if full go to receive
receive:
r0=dm(SPIRX); 					// read from RX buffer
nop;							// wait one instruction
dm(IOFLAG)=r0;					// send data from buffer to IOFLAG
nop;							// wait thre instruction
nop;
nop;
r0=r0+1;						// increase r0	
nop;							// wait thre instruction
nop;
nop;
dm(SPITX)=r0;					// set data from ro to TX buffer
nop;							// wait thre instruction
nop;
nop;
jump test;						// go to test

start.end:						// end program