Pal To Gal Burning?

Exactly.You must burn the .JED into a PAL20L8
Anyway, if you can try to convert the fusemap to GAL20V8 (or GAL22V10 it it does not fit).I can try it for you if you want.
Hi Caius,

Following up on this topic a little more in detail now as Ive started to understand my minipro functionality a bit better now- I was wondering if you could help me understand a few points - Are there programmers that can burn pals directly or must we always convert the pal to a gal (and the reason we do this is why? purely because PAL's are onetime programmable), as opposed programmable gals.

I looked up the device list on the minipro and can select from various gals and also AMTEL device's. I've attached a link to a gal equivalent pal pdf which I am going to use as a reference chart to determine which gal is needed for a said pal- then it's only a matter of converting the jedec file via a utility ie: paltogal is there windows based gui at all?- and I assume all type pals can be converted for use with an equivalent gal ic's?)

With regard to Amtel's are these just CMOS based now but are TTL equivalent PLA's (if i have read the datasheet correctly), and for clarity if I wished to replace for argument sake a pal16l8 with ATF16v8b is this ok?

Im sure this is pretty generic stuff for you but If you please just confirm if I am on the right track with above before I stuck tinkering it would be appreciated.


Thankyou

Y
 
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Are there programmers that can burn pals directly or must we always convert the pal to a gal (and the reason we do this is why? purely because PAL's are onetime programmable), as opposed programmable gals.
Sure, there are programmers able to program PAL natively but they are vintage or high-end ones, your Minipro cannot handle PALs sadly but ony GALs.

paltogal is there windows based gui at all?- and I assume all type pals can be converted for use with an equivalent gal ic's?)

There is no Windows GUI for PALTOGAL, you must run the program in pure DOS or using DOSBox emulator.
Most of PALs devices can be converted to GALs with PALTOGAL but success is not guaranteed, it's not a magic bullet.PALs and GALs have different fusemaps and internal structures.Sometimes you have to disassembe PAL fusemap and manually adapt the equations to GAL.

and for clarity if I wished to replace for argument sake a pal16l8 with ATF16v8b is this ok?
Yes, most of times you can replace a PAL16L8 with a GAL16V8
 
Sure, there are programmers able to program PAL natively but they are vintage or high-end ones, your Minipro cannot handle PALs sadly but ony GALs.



There is no Windows GUI for PALTOGAL, you must run the program in pure DOS or using DOSBox emulator.
Most of PALs devices can be converted to GALs with PALTOGAL but success is not guaranteed, it's not a magic bullet.PALs and GALs have different fusemaps and internal structures.Sometimes you have to disassembe PAL fusemap and manually adapt the equations to GAL.


Yes, most of times you can replace a PAL16L8 with a GAL16V8

Thank you Caius for coming back to me so promptly appreciated mate .

I played about with pal2gal today- came across a link you provided another forum member and I seemed to have successfully converted a file, another version I also played arounded with asked for a signature upon completion A,B,R,E im sure you're across those - do I just exit or need to retain the existing signature if im using this version?

Hoping that I should be ok with pal2gal for now as I've researched a heap today on pal burners and tbh all usb type programmers seem to do palace V series but not
20series which I understand aren't interchangeable.

If you know if a semi reasonable burner that does suit please sing out- I'm also going to do a little more homework using wincupl in case I come across an unsuccessful conversion I'll have another option to pursue.

For now its a case of burning afew of these guys with the mini: I guess with relation to speed its just a matter of replacing the gal with the equivalent speed of the pal on board the majority is are "A or B" having a look a online seems that only replacements I can see are atf stuff from major retailers and looks that 20ns and above for gal16v8 have been D/S- this is hard work!


Cheers and thanks again my man

Y
 
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I played about with pal2gal today- came across a link you provided another forum member and I seemed to have successfully converted a file, another version I also played arounded with asked for a signature upon completion A,B,R,E im sure you're across those - do I just exit or need to retain the existing signature if im using this version?
You have to select 'Retain'

Hoping that I should be ok with pal2gal for now as I've researched a heap today on pal burners and tbh all usb type programmers seem to do palace V series but not
20series which I understand aren't interchangeable.
PALCE devices are different from PAL.
PALCE are often used as direct GAL replacement.


If you know if a semi reasonable burner that does suit please sing out- I'm also going to do a little more homework using wincupl in case I come across an unsuccessful conversion I'll have another option to pursue.

You must look for some vintage programmers like the ones from Hi-Lo Systems or Data I/O but I warn you that they have serial or parallel interface therefore they do require old operating System like Window 98, they don't work under virtual machine so you must set-up an old computer.
As for modern programmers, there are some that support PAL devices but they are expensive like the Beeprog2 :


Anyway, keep in mind that finding blank PAL devices is quite hard nowadays, most of them are pulled part or counterfeit.It would be enough for you to convert the PAL dumps to GAL and then burn them with your MiniPro.
 
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You have to select 'Retain'


PALCE devices are different from PAL.
PALCE are often used as direct GAL replacement.




You must look for some vintage programmers like the ones from Hi-Lo Systems or Data I/O but I warn you that they have serial or parallel interface therefore they do require old operating System like Window 98, they don't work under virtual machine so you must set-up an old computer.
As for modern programmers, there are some that support PAL devices but they are expensive like the Beeprog2 :


Anyway, keep in mind that finding blank PAL devices is quite hard nowadays, most of them are pulled part or counterfeit.It would be enough for you to convert the PAL dumps to GAL and then burn them with your MiniPro.
Thankyou again Caius super appreciative of you going through these points in detail for me mate. I think I have most of it under control now. I had my wires crossed a little and probably was concerning myself with tech stuff I needed worry to much about- speeds and so forth. I'll stay away from repro gear as you've mentioned and did also read that a lot of the gear is counterfiet and basically no good. If I stick with atmel stuff and salvaged gals off old boards -thats the go - I was thinking intially 25 was faster than 10 now knowing 100ns will cover most all stuff im glad that I got my head around it

Grazie again for taking time out to help me understand !

Y
 
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