Specifications

The first condition detected will be processed. Successive conditions are ignored. If
more than one file has the same number, the first file found will be used.
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Command files are used only in units equipped with the optional internal drive.
To permanently update
the contents of the
internal drive from the
PC-Card slot, use a
Command File.
Command Files are a simple yet powerful way to automatically update the contents
of one or many Digital Audio Machines in the field, without using a laptop or other
external device. Just insert an appropriately prepared PC-Card and the Digital Audio
Machine updates itself. Here’s how it works:
Command files are only
processed if the test
button is depressed on
power up or when the
removable media is
changed.
If the test button is depressed when power is first applied to the Digital Audio
Machine or when the removable media is changed, the Digital Audio Machine
checks for the presence of a command file named COMMAND0.BAT on the
removable media. If found, this file will be processed. Currently the command file
supports only the inclusion of an update all command, of the form:
*U
If these characters appear at the beginning of the file, the Digital Audio Machine will
automatically search for and delete any file numbers on the internal drive that match
those on the external drive. It then compacts the internal drive, and copies all files
(except COMMAND0.BAT) from the removable drive to the internal drive.
The LED blinks during the entire update process. Once the LED is extinguished it is
safe to remove the PC-Card.
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The table below shows the complete Digital Audio Machine serial protocol,
including the Pioneer LDP compatible commands and our extensions. Using these
commands, an external controller or PC can accomplish extremely complex tasks.
Throughout the following table <CR> means carriage return, a byte with the
hexadecimal value of 0D.
Description Command Bytes Response Comments
Play PL<CR> R<CR> upon receipt
<CR> upon completion
Automatically stops
at end of track
Pause PA<CR> R<CR>
Select File nSE<CR>
nnSE<CR>
nnnSE<CR>
R<CR> Only file number
addressing is supported
(not frames or time)
Audio Control nAD<CR> R<CR> 0=Mute
1=Unmute
Play and loop at end of file LP<CR> R<CR>
Select Drive nSL<CR> R<CR> 0=internal, 1=Removable
Drive Directory Request ?D<CR> ASCII dump