Q: Im getting a "Device is NOT Empty ($000000)" error?Ī: Eprom appears not to be empty and it is likely to happen if you buy used chips. Make sure the "power" jumper is set correctly (Step 8 ). Q: Im getting a "Hardware Error: Check Power & connection"?Ī: Make sure both parallel & power cable is connected and plugged in. If you are worried about the whole erasing thing, then maybe it better to just stick to just buying already empty eproms as they are cheap enough. 27C128/27128/27C256/27256 eproms usually need a doze of UV light for 20 minutes to be completely empty. Maybe putting the eraser into a black garbage bag or similar to make sure its sheltered properly (cant hurt to be extra carefull). One of those cheap chinese ones will do the job nicely, but you may wanna be a little more carefull when handling it. A quick search for "eprom eraser" will get you a long list with prices as low as $10. Buying a cheap eprom eraser is easy on ebay too. Thats why eprom erasers are always a closed box with a special drawer so you cant accidentally look at the UV bulb.
#Eprom programmer ez ep original price skin#
The doze of UV light is so strong that should you get some in your eyes you would go BLIND and should you get some on your skin you will get burned. To erase a eprom you need a stong doze of UV light to shine down the little window in the top of the eprom. Looks like the same jack as used by Amstrad monitors. The "Jack in" on the board seems to be a normal round jack stick like used with most common adapters. Again, if you really intend to use the Willem "for real" you will need a real adapter as even tho the usb cable feels like a nice plug and play-ish, its good to have the ability to write too.
Hook up power source (adapter or usb cable). Always doublecheck the chip is correctly in place. Warning: inserting the chip wrongly may damage both the chip and board. Then press down the handle to secure the chip in place. Ensure that the chip is inserted at the BOTTOM and that all the chip legs fit correctly. Make sure that the Notch points UP towards the handle (see green circle). Insert your 27128 or 27C128 chip like shown. make sure to keep this at 5V normal position. Probably the only jumper you actually have to set manually yourself When your are READING your eproms. to write/burn eproms you will need a power adapter at 9V, 12V or 15V to supply the 6V needed for writing. Note: if USB cable (5V) is used you can only READ eproms. If your Willem was sold as a "usb"-kit it will most likely be in usb position and if your got a "poweradapter"-kit it will be in that position.
#Eprom programmer ez ep original price software#
Select software version to fit board (default). This is the default posistions, so with a little luck you wont have to touch them at all. So far all the chips ive used worked with 12,5V.Įnsure that all these pins are in normal chip usage position (normal usage for this chip of cause). If you get a chip without visible Vpp try the lower 12,5V first. Note that you MAY get some chips that require the higher 21V. 27C128 usually use 12,5V and this is usually the default of the board. Note how it usually says on the chip what the Vpp is (see RED circle). With a little luck the rest of the setting on the board wont need to be change as the "factory settings" works quite well most 27128/27C128.īut just in case here is a step by step check:Ĭhange the correct chip pattern to tell the board that we are using a 27C128 chip.Ĭheck correct Vpp (programming voltage).
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