I just picked up this card on Ebay for about $9:
http://www.ebay.com/itm/290674393057?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
I haven't tried any conversions on it yet, but it has its Flash chip in a socket and the capacity of the chip is 4Mbits or 512Kilobytes.
Unless there's some gotcha in the boards wiring, this should be ideal for experimenting. The flash is four times as large as some others, and it's in a socket.
http://www.ebay.com/itm/290674393057?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
I haven't tried any conversions on it yet, but it has its Flash chip in a socket and the capacity of the chip is 4Mbits or 512Kilobytes.
Unless there's some gotcha in the boards wiring, this should be ideal for experimenting. The flash is four times as large as some others, and it's in a socket.