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STFM with 6 chip TOS. what are the jumpers for 2 chips?


Chandler

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i have an STFM with a 6 chip TOS 1.02 and i want to update to a 2 chip 1.04 version (still the same 28 pin version)

 

i thought it was the 2 or 3 solder pads marked 256K that needed to be moved to 1M

 

is that all i need to do?

 

tried it today and no joy

 

is there something else needed?

 

thanks :0)

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Here is a picture of a 2 chip STF. If you look along side of the ROM area, there are 2 sets of solder pads for 256K and 1M. The 1M pads should have a drop of solder connecting the pads. The 256K pads need to be cleared. If you look at the row of resistors right below the power supply, there is a pad there. Make sure 1M has solder and 256K does not. Also, make sure the HI and LO chips are in the right sockets.

 

post-6701-0-81365200-1349909345_thumb.jpg

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