Introduction

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Benny Boogaert modified a 32K EPROM card to a 512K Flash card.

Components used

This is what he did.

Modification to card

		Instructions
Image Modified		Pull off the lid
Image Modified		round off the 4 plastic pins
Image Modified		cut some space around the pins
Image Modified		Connect the wires to the chip and edge connector, Only use a small amount of solder, leaving as much of the gold connector as possible. Make space for the little wires, not too much as the plastic has to push the PCB leading wires around the holes. Edge Wire Chip Signal

31

37 Green 1

32

A18

30

36 Yellow 30 A17

16

22 Blue 31 WE# 2 Black 3 1 White
Image Modified		Flatten the 32 pins and clean up copper. They go through the pcb too far preventing the cover to sit tight in it's place.
Image Modified		2 pieces of sellotape were used to keep the top and bottom of the case tight to start with
Image Modified		one layer up front and one in back

Image RemovedComponentManufacturer Part NoOrder CodePriceMin Qty

AMIC - A29040C-55F - MEMORY, CMOS, 4MBIT, DIP-32

A29040C-55F

Farnell2.76
1

, Tape should be tight and flat

Components used

Conclusion

Benny Boogaert has shown that it is relatively easy to build your own 512K Flash card for very little money. The difficult bit is getting the extra wires to connect to the gold connector without contaminating it with solder. Not an easy task.

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