HP 64700 series, User Manual

Page: 56 / 312

Then, the absolute file was loaded:
load cprg <RETURN>
The following trace command was entered, and the program was
run.
trace after main <RETURN>
run from transfer_address <RETURN>
Display Positioning
The trace display command displays 256 states, not all of which can
appear on the screen at the same time. However, you can
reposition the display on the screen with the keys described below.
Up/Down
The < uparrow> and < downarrow> (or roll up and roll down)
keys move the display up or down on the screen one line at a time.
unsigned short dest[0x7f];
unsigned short *dest_ptr;
main ()
{
/*****************************************/
/* This is a comment block */
/* to demonstrate the "number */
/* of source lines" trace */
/* display option. */
/*****************************************/
char *message;
for (;;)
{
message = "This message is to be written indefinitely. ";
dest_ptr = dest;
while (*message != ’\0’)
{
*dest_ptr = *message;
d+;
+;
}
}
}
Figure 3-1. Program Used for Example Displays
3-2 Displaying Traces