|
Title: eprom question Post by: jbshocks on October 13, 2011, 09:12:33 PM So now that everything is good with my CEI machine I would kind of like to back up the eproms in case of future trouble. My first trouble is that I know very little about eproms. There are 3 of them eprom 1 = 27c256-150jl eprom 2 = TS27c64a and eprom 3 =M27128af1
Are these familiar to anyone? Are they supported with any of the recommended burners? To create a back up do I need the exact model eprom? Can they interchange with other model eproms and if so what is the determining factor? I see one with a reference to 5 V and another with 12.5v. Title: Re: eprom question Post by: coorslight115 on October 13, 2011, 11:56:55 PM So now that everything is good with my CEI machine I would kind of like to back up the eproms in case of future trouble. My first trouble is that I know very little about eproms. There are 3 of them eprom 1 = 27c256-150jl eprom 2 = TS27c64a and eprom 3 =M27128af1 Are these familiar to anyone? Are they supported with any of the recommended burners? To create a back up do I need the exact model eprom? Can they interchange with other model eproms and if so what is the determining factor? I see one with a reference to 5 V and another with 12.5v. They are very popular eproms. 27c64 27c128 27c256 The 150 is the speed, you will want to stay with 150 or lower IE: 120, 100, 90 ect. All modern burners support these as they have been around since the early 80's or older. You can get good deals on them on e-bay. Don't spend more than $1.50 at the highest each Title: Re: eprom question Post by: jbshocks on October 14, 2011, 12:07:27 AM Thanks, That clears up a bunch.
Title: Re: eprom question Post by: knagl on October 14, 2011, 01:45:04 AM Also, you don't have to actually copy your existing chip on to a new chip to back it up -- you can just copy the data on to your computer for backup purposes, and then burn a replacement chip in the future should you ever need to. :89-
Title: Re: eprom question Post by: jasongd on October 24, 2011, 08:53:08 PM I use a Wellon VP280 programmer for my back up's.
This programmer will do your chips also, I got mine on Ebay. Very easy to use. Cheers. :88- Title: Re: eprom question Post by: dhellis on March 17, 2012, 02:01:42 AM So now that everything is good with my CEI machine I would kind of like to back up the eproms in case of future trouble. My first trouble is that I know very little about eproms. There are 3 of them eprom 1 = 27c256-150jl eprom 2 = TS27c64a and eprom 3 =M27128af1 Are these familiar to anyone? Are they supported with any of the recommended burners? To create a back up do I need the exact model eprom? Can they interchange with other model eproms and if so what is the determining factor? I see one with a reference to 5 V and another with 12.5v. Coorslight115 did tell you what the chips were but neglected to mention that the 5 volt and 12.5 volt readings are the programming voltages used. Any cheap eprom programmer would program these. |