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PCML Q+ Disk Interface RAM
Posted: Tue May 16, 2023 8:56 am
by RWAP
Does anyone know what RAM chips were used in the PCML Q+ Disk Interface?
Re: PCML Q+ Disk Interface RAM
Posted: Tue May 16, 2023 9:33 am
by ones' complement
IIRC the PAL needs to be updated for RAM chips if they were not already fitted.
(not my interface, just happened to have picture)
Re: PCML Q+ Disk Interface RAM
Posted: Sat Jul 08, 2023 9:31 am
by TheCorfiot
Good Morning Everyone
I have fitted 256K RAM to one of these cards and it does indeed need a different PAL to register the RAM too.
I proved this by fitting the PAL from my DISK+RAM card temporarily and it worked perfectly.
Is there a way of reading the PAL and duplicating it using an equivalent GAL chip or does a suitable JED file already exist.
Maybe someone can read the contents of their PAL and upload it for PAL to GAL Conversion.
Any help on this would be really appreciated.
Thank you
Re: PCML Q+ Disk Interface RAM
Posted: Sat Jul 08, 2023 1:25 pm
by klausfrank
Hi folks,
I have a PCML disk if. The chips used - see pic.
Regards Klaus
Re: PCML Q+ Disk Interface RAM
Posted: Sat Jul 08, 2023 4:43 pm
by Derek_Stewart
klausfrank wrote: Sat Jul 08, 2023 1:25 pm
Hi folks,
I have a PCML disk if. The chips used - see pic.
Regards Klaus
Hi Klaus,
Can you make a copy of the PAL chip for the on board ram mapping.
Re: PCML Q+ Disk Interface RAM
Posted: Sun Jul 09, 2023 8:09 am
by klausfrank
Hi Derek,
Sorry, I am not able to read the gal. I don’t have an adapter to my Willem programmer. I am looking for one. If I can find a schematic, I will try to build one.
Regards
Klaus