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Network Appliance Modifications: Serial Port Expansion
 
 
[schematic thumbnail] [schematic thumbnail]
This modification is as-yet untested, but it should work fine. In the above left schematic, a simple serial port expansion is presented. It provides support for RS232 transmit, receive, CTS and RTS. The other I/O pins are not connected in this implementation. The right schematic is an enhanced serial port implementation which provides support for all of the RS232 control lines. Some applications may require these additional control signals. Both modifications use CN12, which is accessible via the RAM expansion door.
Table of Contents
Network Appliance Mods Home
2.5" IDE Cable
2.5" IDE Disk Mounting
IDE Disk Access LED
CPU Cooling Method
Serial Expansion
USB Ethernet
 
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