Dspx Commands and Prompts

When started with the –nochat option, dspx displays a prompt such as:

[110] :

For parallel interfaces, the prompt shows (in binary form) the three status lines coming from the DSP. The least significant prompt bit, when 1, indicates that data is available in the DSP output FIFOs. The other bits are unused.

Dspx Commands

Command	Description
*	Perform a complete power-up restart of the DSP.
*f	Clear the DSP output FIFO.
*n	Clear the measured noise levels.
chat	Access DSP setup terminal information. The terminal behaves as if it were a TTY plugged into the DSP through the serial edge connector.
d [n [m] ]	Display n words starting at location m. The data are shown in both Hex and Signed Decimal format. Variations on the d command are: du which displays entirely in Unsigned Decimal dx which displays entirely in Hex
q or e	Exit
f n m [#]	Fill, write n, m times, using DMA size #
gparm	Read the current GPARM values, and print them in a format that is easy to read.
? or h	Help, print command summary
r [n [#]]	Read up to n words, DMA size #
rays	Display history for the last 40 rays that were processed. The table shows the starting and ending Azimuth and Elevation, the number of samples, and the processing time for each ray.
repeat [n]	Repeat line n times
w n [n n ...]	Write word
~ [t]	Sleep t milliseconds (default 1000)
! [n]	Re-execute last line n times
;	Command separator