[Coco] Buying EPROMs

[Dave Philipsen]

Here is a good source that is reliable: http://www.bgmicro.com/eproms.aspx
Looks like they have OTPs for a buck apiece.

If you decide to go with windowed EPROMs and want to erase an re-burn 
then you can make your own eraser on the cheap.  Find an desk lamp with 
a fluorescent tube (can't remember the tube size, maybe 18-inch or 
something like that) and then call up a good lighting store and ask for 
a germicidal bulb of the same size.  Put the germicidal bulb in the 
fixture and use as an eraser.  Position the bulb within an inch or so of 
the EPROM window and turn the bulb on for about 10-15 minutes.  Do not 
stare at the bulb up close as it's not good for your eyes.  It will also 
ionize oxygen in the air and you will smell a slight ozone odor.

Dave


On 8/7/2017 8:24 AM, Carlos Camacho wrote:
> Thank you all for the advice on which EPROMs to buy for adding Extended
> BASIC.
>
> Could use recommendations for where to buy. I often buy parts from Jameco,
> sometimes Digikey. And eBay if they are ancient. How about for 27256?
> Someone mentioned they usually go for a buck a piece?
>
> Thanks,
> Carlos Camacho
>