diff -urp bochs-2.2.6/iodev/pit82c54.cc bochs-2.2.6.orig/iodev/pit82c54.cc
bochs-2.2.6.orig/iodev/pit82c54.cc2006-01-08 12:39:08.000000000 -0800
+++ bochs-2.2.6/iodev/pit82c54.cc2006-04-03 14:00:27.000000000 -0700
@@ -28,6 +28,7 @@
#include iodev.h
#include pit82c54.h
+#include
#define LOG_THIS this->
@@ -359,7 +360,13 @@
case 2:
if(thisctr.count_written) {
if(thisctr.triggerGATE || thisctr.first_pass) {
set_count(thisctr, thisctr.inlatch);
+unsigned n = thisctr.inlatch;
+if (jitter && n > 5) {
+n *= (double) rand() / RAND_MAX;
+if (n < 5)+n = 5;+}+set_count(thisctr, n); thisctr.next_change_time=(thisctr.count_binary-1) & 0xFFFF; thisctr.null_count=0; if(thisctr.inlatch==1) {diff -urp bochs-2.2.6/main.cc bochs-2.2.6.orig/main.cc— bochs-2.2.6.orig/main.cc2006-01-22 04:31:15.000000000 -0800+++ bochs-2.2.6/main.cc2006-04-03 14:00:54.000000000 -0700@@ -105,6 +105,7 @@ #endifchar *bochsrc_filename = NULL;+int jitter = 0;void bx_print_header () {@@ -459,6 +460,13 @@ else if (!strcmp (“-q”, argv[arg])) { SIM->get_param_enum(BXP_BOCHS_START)->set (BX_QUICK_START);
}
+else if (!strcmp (-j, argv[arg])) {
+if (++arg >= argc) BX_PANIC((-j must be followed by a number));
+else {
+jitter = 1;
+srand (atoi (argv[arg]));
+}
+}
else if (!strcmp (-f, argv[arg])) {
if (++arg >= argc) BX_PANIC((-f must be followed by a filename));
else bochsrc_filename = argv[arg];
diff -up /home/blp/cs140/bochs-2.2.6/bochs.h~ /home/blp/cs140/bochs-2.2.6/bochs.h
bochs-2.2.6/bochs.h.orig2006-01-28 08:16:02.000000000 -0800
+++ bochs-2.2.6/bochs.h2006-04-03 14:03:54.000000000 -0700
@@ -698,4 +698,6 @@ int bx_init_hardware ();
#endif
+extern int jitter;
+
#endif/* BX_BOCHS_H */
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