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Just use a 25 to 9 pin standard serialport adapter. I use a jdm programer that has a 9 pin connector that plugs straite in to a 9 pin serial port ( on a 1 to 1 9 pin exstention lead). At home my PC has a 25 pin serial port and i purchased a 9-25 pin adapter from Maplin.
Do not get confused with the type of adapter you would use for a serial port modem as these have a diferant pin assinment.
Yes, ProPIC II is a parallel interface, not serial. A serial 9-25 adapter probably won't work!
If you have the schematic from the ProPIC website (**broken link removed**) the pin numbers for both plug sizes are marked on it. That's what I followed.
These are the connections you need to make between the 9 and 25:
To explain, pin 1 on the ProPIC connector should be wired to pin 2 on the 25-way plug, etc. Pin 9 on the ProPIC connector (Ground) should be wired to any or all of pins 18 to 25.
Make sure you are wiring to the right pins - the pin numbers are usually marked on good quality D-connectors, they are numbered on male/female so that pin 1 always mates with pin 1, etc.
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