User Manual

2.2 How to Debug User’s Programs
The download_ports of the 7521 series are given as follows:
• 7521/7522/7523/7522A/7524/7527  Use COM1
When the 7521 series is powered-up, it will initialize the download_port
to the following configuration:
• Start-bit=1, data-bit=8, stop-bit=1, no parity
• Baud rate = 115200 BPS
Then, the 7521 series will send all power-up information to the
download_port. The user will see all power-up messages as follows:
• Power-off PC & 7521 series
• Install the download cable between download_port of 7521 series & COM1
of PC (refer to Sec. 1.5.1)
• Power-up PC & Run 7188X.EXE
• Power-up 7521 series
• All power-up message will be shown on the monitor of the PC
After the power-up stage, the 7521 series will use the download_port as
its standard input/output. So the standard output of 7521 series will be shown
on the PC’s monitor. If the user presses any key on the PC’s keyboard, this key
will be sent to the 7521 series as standard input. Therefore the keyboard &
monitor of PC can be used as standard input & output of the 752N series as
follows:
• Use 7188X.EXE as a bridge between the 7521 series & PC
• Run 7188X.EXE in PC to set up this bridge
• Keyboard of PC  standard input of 7521 series
• Monitor of PC  standard output of 7521 series
In this way, the 7521 seies can read data from the keyboard & display it
on the monitor. So program debugging will be more convenient & effective.
Note: 7188X.EXE is included on the companion floppy disk/CD.
7521/2/2A/3/4/7 Series Hardware User’s Manual, Ver. 1.5 Sep/2002, 7Mh-001-15 -----48