unsigned long jtagtransn(unsigned long word,
unsigned int bitcount){
unsigned int bit;
- unsigned int high=(word>>16);
- SAVETCLK;
+ //0x8000
+ unsigned long high;
+ if(bitcount==20)
+ high=0x80000;
+ if(bitcount==16)
+ high= 0x8000;
+ SAVETCLK;
for (bit = 0; bit < bitcount; bit++) {
/* write MOSI on trailing edge of previous clock */
- if (word & 0x8000)
+ if (word & high)
{SETMOSI;}
else
{CLRMOSI;}
unsigned int drwidth=20;
//! Shift all bits of the DR.
-unsigned long jtag_dr_shift(unsigned long in){
+unsigned long jtag_dr_shift20(unsigned long in){
// idle
SETTMS;
CLRTCK;
SETTCK;
// shift DR, then idle
- return(jtagtransn(in,drwidth));
+ return(jtagtransn(in,20));
}
//! Shift 16 bits of the DR.
unsigned int jtag_dr_shift16(unsigned int in){
- //This name is deprecated, kept around to find 16-bit dependent code.
- return jtag_dr_shift(in);
+ // idle
+ SETTMS;
+ CLRTCK;
+ SETTCK;
+ // select DR
+ CLRTMS;
+ CLRTCK;
+ SETTCK;
+ // capture IR
+ CLRTCK;
+ SETTCK;
+
+ // shift DR, then idle
+ return(jtagtransn(in,16));
}