Hi ala_xfire

Be careful with those cheap ebay units. A lot of programmers won't read the 5PO8C eprom, you should confirm this before you buy one. Some sellers say that their programmer works but I've found some only read half of the memory contents. If you only read half the contents and save it as your safe file or try and transfer it to another unit, you'll be in all sorts of trouble. The other thing that's very useful is to be able to vary the reading and programming voltages. When your trying to read and program with a device still in circuit it's important to keep the voltage as low as possible, otherwise other components on the board might start up and interfere with what your doing (eg. the microprocessor might start up). I use a programmer that's made in the USA (from Andromeda Research Labs), it's more versatile and costs a little bit more, but it does the job well.