62 lines
1.9 KiB
Diff
62 lines
1.9 KiB
Diff
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diff -urp bochs-2.2.6/iodev/pit82c54.cc bochs-2.2.6.orig/iodev/pit82c54.cc
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--- bochs-2.2.6.orig/iodev/pit82c54.cc 2006-01-08 12:39:08.000000000 -0800
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+++ bochs-2.2.6/iodev/pit82c54.cc 2006-04-03 14:00:27.000000000 -0700
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@@ -28,6 +28,7 @@
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#include "iodev.h"
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#include "pit82c54.h"
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+#include <stdlib.h>
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#define LOG_THIS this->
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@@ -359,7 +360,13 @@
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case 2:
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if(thisctr.count_written) {
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if(thisctr.triggerGATE || thisctr.first_pass) {
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- set_count(thisctr, thisctr.inlatch);
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+ unsigned n = thisctr.inlatch;
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+ if (jitter && n > 5) {
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+ n *= (double) rand() / RAND_MAX;
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+ if (n < 5)
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+ n = 5;
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+ }
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+ set_count(thisctr, n);
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thisctr.next_change_time=(thisctr.count_binary-1) & 0xFFFF;
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thisctr.null_count=0;
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if(thisctr.inlatch==1) {
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diff -urp bochs-2.2.6/main.cc bochs-2.2.6.orig/main.cc
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--- bochs-2.2.6.orig/main.cc 2006-01-22 04:31:15.000000000 -0800
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+++ bochs-2.2.6/main.cc 2006-04-03 14:00:54.000000000 -0700
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@@ -105,6 +105,7 @@
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#endif
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char *bochsrc_filename = NULL;
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+int jitter = 0;
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void bx_print_header ()
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{
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@@ -459,6 +460,13 @@
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else if (!strcmp ("-q", argv[arg])) {
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SIM->get_param_enum(BXP_BOCHS_START)->set (BX_QUICK_START);
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}
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+ else if (!strcmp ("-j", argv[arg])) {
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+ if (++arg >= argc) BX_PANIC(("-j must be followed by a number"));
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+ else {
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+ jitter = 1;
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+ srand (atoi (argv[arg]));
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+ }
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+ }
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else if (!strcmp ("-f", argv[arg])) {
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if (++arg >= argc) BX_PANIC(("-f must be followed by a filename"));
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else bochsrc_filename = argv[arg];
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diff -up /home/blp/cs140/bochs-2.2.6/bochs.h\~ /home/blp/cs140/bochs-2.2.6/bochs.h
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--- bochs-2.2.6/bochs.h.orig 2006-01-28 08:16:02.000000000 -0800
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+++ bochs-2.2.6/bochs.h 2006-04-03 14:03:54.000000000 -0700
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@@ -698,4 +698,6 @@ int bx_init_hardware ();
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#endif
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+extern int jitter;
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+
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#endif /* BX_BOCHS_H */
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