--- /dev/null
+#include "io.h"
+
+int main(void)
+{
+ long long rs, rt, dsp;
+ long long res;
+
+ rs = 0x1234567887654321;
+ rt = 0x1234567812345678;
+ dsp = 0x2222;
+ res = 0x1234567812345678;
+ __asm
+ ("wrdsp %1, 0x3\n\t"
+ "wrdsp %1\n\t"
+ "dinsv %0, %2\n\t"
+ : "+r"(rt)
+ : "r"(dsp), "r"(rs)
+ );
+
+ if (rt != res) {
+ printf("dinsv error\n");
+ return -1;
+ }
+
+ return 0;
+}