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The PS command causes the address pointer to skip over the addresses in the remaining portion of the display
memory page in use, and go to the first address at the beginning of the next display memory page. Display control
work 1056 (DW 1056) can be substituted for the PS command.
If PS is executed when the address pointer is at an address in the fourth and last page (Trace C) of display memory,
the pointer skips to address B in page 1. Because the program does not wait for a new refresh cycle
before executing the next instruction, the skip may cause an increase in trace intensity as new data is written over
the old. Increased trace intensity occurs only when the time span of the program is less than the default refresh
rate. End-of-display control instruction word 1028 in the trace C page normally makes sure a refresh cycle occurs.
A typical use of the PS command is shown in the sample program below.
10 ASSIGN@Sato718
20 OUTPUT @Sa;"IP,S2;TS;DAlOO;PS;"
30
END
In the sample program above, the analyzer is preset (IP), put in the single-sweep mode (Sl), instructed to take a
single sweep (TS), and then, from address 100 (DAlOO) in display memory page 1 (trace A), skip over (PS) the
remainder of the page 1 addresses to the fist address in display memory page 2 (trace B) .
(See Appendix B.)
(Refresh means to update the display from the display memory. Refresh cycles occur at a rate of approximately 50 Hz
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P r o g r a m m i n g
2 9 4
to begin
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