CPU OPERATION
SERIAL FILE DOWNLOAD
SEND runs on a host machine. This host machine must be a PC with a standard COMX RS-232
serial port available.
SEND is invoked this way:
SEND PPP [BR]
PPP is the hexadecimal port address of the serial port on the host machine (3F8 = COM1, 2F8 =
COM2, 3E8 = COM3, and 2E8 = COM4). BR is an optional baud rate parameter. If BR is not
supplied, send uses 9600 baud. For example SEND 2F8 38400 would send files through COM2 at
38400 baud.
Once SEND is running on the host machine, RECV is run on the client CPU card to download
files.
RECV is invoked this way:
RECV RFN LFN [BR] [Q]
RFN is the remote file name (the source file) which is relative to the path where send was
launched. LFN is the local file name (the target file). The Q parameter causes SEND to be aborted
when the file transfer is complete. BR is an optional baud rate parameter. If BR is not supplied, RECV
uses 9600 baud. For example RECV FOO GOO 38400 Q would get the remote file FOO, write it to
the local file GOO, and abort SEND when done. All data transfers would be done at 38400 baud.
The remote file name can include a drive and path, allowing access to different directories,
network drives etc.
If you set the baud rates on the command line, the SEND baud rate must match the RECV baud
rate. Maximum practical baud rate is 115200 baud. You may not be able to use the maximum baud
rate, depending on your host CPU speed, serial port characteristics, interconnect cable etc. (Your
mileage may vary).
CONSOLE SWITCHING
To simplfy system initialization, the 4C24 will use the COM1 serial port as the console if no video
adaptor is found at system startup. The default baud rate is 9600. This console re-direction can be
disabled in the EEPROM setup if desired.
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4C24 CPU USER'S MANUAL
