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The MIPS Download Tool

edown Version 5.0 October 2003

MIPS Technologies Inc

Overview:

1. edown

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1. edown

 
edown [ -r ] [ -i ] [ -T] [ -d dev ] [ -s speed ]
      [ -p freq ] [ file ]

The edown command reads file, or its standard input, one "record" at a time, and transmits it down a serial line to a remote evaluation board. After each record it transmits an ETX `0x03' and then waits for an ACK `0x06' before continuing. If the ACK is not forthcoming within a few seconds, or some other character is received, then the transfer is stopped.

For most files a record is defined as everything up to (but not including) a Linefeed (or CR+LF on Windows). The only exception is for files in IDT/sim binary format, whose record format includes a length field.

-i
Specifies that the file is in IDT/sim binary format. This is the default if file name ends with `.idt'.

-r
Use a CR (carriage return) instead of ETX, for monitors which interpret ETX as control-C. This is required for `IDT/sim', and is the default when its binary format is used.

-d dev
Gives the device name of the serial line. On Unix this will be of the form `/dev/ttys1', whilst on MSDOS it will be a name like com1. Alternatively the DLPORT environment variable can be used to specify the device name. There is no default.

-s speed
Gives the baud rate of the transfer. Alternatively the DLBAUD environment variable is used, but if neither is specified the speed defaults to 9600 baud.

-T
On Unix systems this flag tells edown that it is being invoked from the tip(1) `~C' command, and that it should use the standard input and output file descriptors provided to it by tip. This option is incompatible with the `-d' and `-s' options above.

-p freq
The program normally displays a record count approximately every 2 seconds. If this option is given it instead reports every freq records.


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