EPROM BURNER

[brichter]

Just to be clear...SST 27SF512 are ok to use as a replacement for 27c512 and are erasable? New to this and burner has not arrived yet.

They work on my S+...

[coorslight115]

You didn't state WHO makes the 27c512 you're asking about.
They are made by various companies and come in various device forms.

The SST 27SF512 is a very good replacement for many  27c512 eproms.
All of the different 27c512 makes? I'm not sure...

The SST "SF" eprom is re-writable (Unlike the OTP eproms) and
is conveniently electrically erasable.
It does not have the UV window.

Let me re-frase the question.....

What 27c512 chips should I buy off e-bay to work with the GQ-4x programmer to back up S+ chips. I like the idea of not having to buy a UV erasing lamp but may go that way for cheap chips to back stuff up once I know what I am doing. But while learning I think the SST "SF" may be the way to go. Am I correct or wrong. Never burned chips before and the programmer will not be here till next week.

[coorslight115]

Just to be clear...SST 27SF512 are ok to use as a replacement for 27c512 and are erasable? New to this and burner has not arrived yet.

They work on my S+...

That is what I needed to hear, but what do I look for once I know what I am doing and want to grab some of these bulk deals on e-bay that are not "SF". What ones work and which ones will not? I think 100ns or at most 150ns will work on a S+ 10Mhz board and know faster would be better. But what manufactures do not work for S+?

[StatFreak]

Just to be clear...SST 27SF512 are ok to use as a replacement for 27c512 and are erasable? New to this and burner has not arrived yet.

They work on my S+...

That is what I needed to hear, but what do I look for once I know what I am doing and want to grab some of these bulk deals on e-bay that are not "SF". What ones work and which ones will not? I think 100ns or at most 150ns will work on a S+ 10Mhz board and know faster would be better. But what manufactures do not work for S+?

As long as you are buying the equivalent of a 27C512 and/or a 27C64 you should have no issues. I have found that chips as slow as 200ns will work in an S+ 10MHz board, but faster is better. Besides, you might find other uses for the chips as you progress through this hobby, and for other machines and configurations, you will want chips of at least 120ns or faster. In addition, the cheapest chips are those in current demand, so the faster chips will actually be less expensive than the slower chips. At least, that's what I see when I browse buyICnow.com for used chips from China, or mouser.com for new chips from the U.S.

[brichter]

That is what I needed to hear, but what do I look for once I know what I am doing and want to grab some of these bulk deals on e-bay that are not "SF". What ones work and which ones will not? I think 100ns or at most 150ns will work on a S+ 10Mhz board and know faster would be better. But what manufactures do not work for S+?

I bought these: http://cgi.ebay.com/10-x-SST-27SF512-DIP28-FLASH-EPROM-CHIPS-SST27SF512_W0QQitemZ180406514635QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item2a0110f3cb

They are 70ns. I bought 2 for test purposes at $4.99 total, including shipping. Looks like the price drops when you buy bulk...

[coorslight115]

That is what I needed to hear, but what do I look for once I know what I am doing and want to grab some of these bulk deals on e-bay that are not "SF". What ones work and which ones will not? I think 100ns or at most 150ns will work on a S+ 10Mhz board and know faster would be better. But what manufactures do not work for S+?

I bought these: http://cgi.ebay.com/10-x-SST-27SF512-DIP28-FLASH-EPROM-CHIPS-SST27SF512_W0QQitemZ180406514635QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item2a0110f3cb

They are 70ns. I bought 2 for test purposes at $4.99 total, including shipping. Looks like the price drops when you buy bulk...

Yes...I bought 10 for $20 to play with. Hoped I did right...and looks like I did

[brichter]

Yup...

[stayouttadabunker]

Awesome!...another "BURNER" in da fold!

[coorslight115]

Does anyone have the instructions for the GQ-4x they could send me a copy of? I have the item on its way but would like to read up on it before it gets here and I dive in with out taking the time to fully understand it.

[stayouttadabunker]

They have a manual for it on MCUMall.com

[coorslight115]

I saw software updates, but did not see the manual

[stayouttadabunker]

I didn't see one there either...ah, you don't need it...
just ask us LOL when you get your chips and everything...





I found this neat cross_reference sheet for SST chips at MCUMall.com>>>

[KirkLasVegas]

Always good to have one.
I do a lot of stuff with radios and controllers..so having EPROM equipment is a regular part of
test equipment, Hence the STAG-2000 pictured here And the Willem PCB3

[KirkLasVegas]

This is where I work on "Embedded" ITX controllers (using Asterik PBX) for radio controllers.A "Windows" and Linux workstations. The laptop is for dealing with CF Flash cards since it has 2 PCMCIA slots in it and it's worthless as a laptop (Its a Toshitta)
Now I KNOW the place is a complete mess (my wife reminds me of this)but I can find what I need.
Wife is happy, this hobby keeps me home.....

[FOXSSLOTS1]

I have used this programmer using 2716 with no problems - the programmer just does not identify the manuf and doesn't seem to care.  the GQ-4X works flawlessly. (also 27c64 27c256 and 27c512).
 

[KirkLasVegas]

The "Stag-2000" is older than your Oldsmobile....but it's still working
Check out the monochrome green screen.....

[brichter]

The "Stag-2000" is older than your Oldsmobile....but it's still working
Check out the monochrome green screen.....

Hmm, when's the last time they came out with a software update for that burner?


 

[KirkLasVegas]

The "Stag-2000" is older than your Oldsmobile....but it's still working
Check out the monochrome green screen.....

Hmm, when's the last time they came out with a software update for that burner?


 

Not sure, but i think the updates were available at the local Muntz TV store....

Kirk

[StatFreak]

I have used this programmer using 2716 with no problems - the programmer just does not identify the manuf and doesn't seem to care.  the GQ-4X works flawlessly. (also 27c64 27c256 and 27c512).

Are you referring to the GQ-4X not identifying the manufacturer? If so, you are mostly correct.

It can't automatically read a chip and determine its size and manufacturer. One has to manually set the size and type of chip first (generic options are available in the list). Once this is done, however, the burner will then correctly read the manufacturer and the specific chip number. One can then go back and select the specific chip from the list in place of the generic number.

This seems silly to me though, since once the user has gone to the effort of identifying the chip manually, there's not much use for the burner's "confirmation". It is the only aspect of this burner that I do not care for. Otherwise I agree that the GQ-4X works flawlessly. The interface is simple and straight forward, and the burner is a pleasure to use.

I could see this lack of automatic identifying of chips becoming a problem if one had to read Flash EPROMS or PROMS with stickers on them that covered up the size and type of the chips. It would require peeling off the sticker just to get the size info for the burner.

You are also right that the burner doesn't seem to care about the specific manufacturer chip settings, although there is a message somewhere that recommends using these settings whenever possible. I have never noticed any difference -- at least with EPROMS (haven't tried other types) -- between using the generic chip option and the specific manufacturer option. I wonder if the software uses the manufacturer-specific options to make small changes to the voltages to match the slightly different specs? It certainly doesn't seem necessary.

[coorslight115]

I saw software updates, but did not see the manual

Found the manual

http://www.mcumall.com/download/TrueUSBWillem/GQUSBPrgrmrUserGuide4.0.zip

[stayouttadabunker]

I saw software updates, but did not see the manual

Found the manual

http://www.mcumall.com/download/TrueUSBWillem/GQUSBPrgrmrUserGuide4.0.zip

Great job there coorslight!!!

[FOXSSLOTS1]

only the 2716 - will not id no matter what you do - all others id works fine.

 

[coorslight115]

Ok its getting late for me and I am tired, but need to ask this question that has me wondering.. Once i get past the learning/mistake stage of being a new chip burner, should I just buy the correct size chip from epromman.com ie: 27c64 , 26c128, 27c256 ect and not hassle with the offset? I know the SF chips are the way to go for a newby and if you want to reuse the chip. but I can buy 50 chips for $25 for backing-up IGT S+ mix and match.   

[KirkLasVegas]

Ok its getting late for me and I am tired, but need to ask this question that has me wondering.. Once i get past the learning/mistake stage of being a new chip burner, should I just buy the correct size chip from epromman.com ie: 27c64 , 26c128, 27c256 ect and not hassle with the offset? I know the SF chips are the way to go for a newby and if you want to reuse the chip. but I can buy 50 chips for $25 for backing-up IGT S+ mix and match.   

The MAJOR differance is having to wait an hour for the UV light to erase the 27C series of EPROMS. i would stay with the 27C64/27C256/27C512 as well as the 27C4002/27C801 or 27C080.
When you save a file for use later you can name them "SS4713-64" so you know its on a 27C64 or "SB000655-4002" so you know its going on a 27C4002.
Some add a note in the file area such as... * all SSxxxx are 27C64* or *All S2000 base are 27C4002 and leave it off the indivdual file names.


Kirk

[brichter]

An hour? Boy, that really goes beyond a tan and straight into cancer!