Unitech ESC G/ROM Get MR350MKIIs Flash ROM size, ESC H Hard Reset and initiate power on test

ESC G/ROM - Get MR350MKII's Flash ROM size

=> STX ESC G/ROM CS1 CS2 ADDR

<= STX ESC G/ROM <xxx> <zzz> CS1 CS2 ETX where <xxx>= number of Kbytes of total memory

<zzz>= number of Kbytes of Free memory => ACK or NAK

ESC H - Hard Reset and initiate power on test

This command resets the MR350MKII terminal, and running applications are halted. Power-on test routines are run and, if completion is normal, the MR350MKII is ready for the next command.

=>	STX ESC H CS1 CS2 ADDR
<=	ACK or NAK

ESC I - Get filename of current executing program

=>	STX ESC I CS1 CS2 ADDR
<=	STX ESC I <filename> CS1 CS2 ETX
	if a program with filename is running in
	terminal
	STX ESC I <01> CS1 CS2 ETX
	if no program is running
=>	ACK or NAK

ESC J - Check if file existed or not

=> STX ESC J <filename> CS1 CS2 ADDR <= STX ESC J <Retcode> CS1 CS2 ETX

where Retcode = 00 means file exist

= 01 means file not exist

=> ACK or NAK

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