QUBIDE GALS
Posted: Tue Apr 14, 2020 10:56 am
Hi all,
I have been building up one of those DIY QUBIDE boards that are found on eBay - I think these are based on the one that appeared on the spanish forum, but I think Tetroid did a kit of parts for one, which I had previously built and is working fine.
However - on searching around for GAL1 and GAL2 logic - for the upgraded version - I have found several versions out there.
So the list so far:
1) Original version
2) Updated version - seems to be available in a zip file - contains decodes for Alternate Status Register
3) Version that I had saved a while back from yahoo groups - this has the same update as in 2) but also additionally decodes RWL signal for IA0
I want to run either QUBATA 310 or version 2.01 of the QUBIDE ROM - apparently 2) version of the GAL works for this - as that appears to be the version in the Tetroid GAL's - but GAL signature doesn't match the ones in 3), and doesn't have that additional RWL decode for IA0
Just seeking clarification on what the differences were if anyone knows ?
I have been building up one of those DIY QUBIDE boards that are found on eBay - I think these are based on the one that appeared on the spanish forum, but I think Tetroid did a kit of parts for one, which I had previously built and is working fine.
However - on searching around for GAL1 and GAL2 logic - for the upgraded version - I have found several versions out there.
So the list so far:
1) Original version
2) Updated version - seems to be available in a zip file - contains decodes for Alternate Status Register
3) Version that I had saved a while back from yahoo groups - this has the same update as in 2) but also additionally decodes RWL signal for IA0
I want to run either QUBATA 310 or version 2.01 of the QUBIDE ROM - apparently 2) version of the GAL works for this - as that appears to be the version in the Tetroid GAL's - but GAL signature doesn't match the ones in 3), and doesn't have that additional RWL decode for IA0
Just seeking clarification on what the differences were if anyone knows ?