diff -r ee662c2e14f9 -r 12065fad228b me8100_test_dio/rtest.c
--- a/me8100_test_dio/rtest.c	Thu Jan 17 20:25:34 2002 +0100
+++ b/me8100_test_dio/rtest.c	Fri Jan 18 20:22:52 2002 +0100
@@ -23,6 +23,8 @@
 
 #include "me8100.h"
 
+#define USE_READ
+
 int main(void){
   int err = 0;
   static int file_handle = -1;
@@ -30,6 +32,9 @@
   unsigned short value_a;
 
   printf("Read test, PID: %d\n", getpid());
+#ifdef USE_READ
+  printf("Using read()\n");
+#endif
   file_handle = open("/dev/me8100_0a", O_RDONLY, 0);
 
   if(file_handle < 0){
@@ -38,7 +43,11 @@
   }
 
   for (;;) {
+#ifdef USE_READ
+    read(file_handle, &value_a, sizeof(value_a));
+#else
     ioctl(file_handle, ME8100_READ_DI_A, &value_a);
+#endif
     printf("Read  %04x\n", value_a);
     sleep(1);
   }