Download procedures:

(A) prepare the programmer first

1. Select the correct device name.
2. Insert the device into the slave sockets.
3. Execute the transfer command(key1+key3) on the programmer.
4. depress key1 to enter download mode.
The programmer will check all the slave device's blank status. It will also
check the receive buffer to see if it's empty. If it's not, a "Clear buffer?" message
will be shown on the display, waiting for user to decide what to do on this byte. Usually the "yes"(key1) was chose, unless you are sure this very first byte should go into the slave IC.
5. Wait until the LCD panel shows the "Download Rdy." message.

(B) get the PC ready

1. Executing the "PROMUTIL.EXE" on the PC side to start.

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