Have you considered upgrading the 6510 adapter PCB so you can just plug the wires from the RAM upgrade into it? It'd be a lot cleaner and not a great deal of work to add two additional traces and thruholes. Plus you could avoid soldering on the original PCB, and it would be 100 percent reversible. That being said, it's a very slick and clean upgrade!
You only need the "Diag Cartridge" if your Commodore 16 starts acting strange after performing the 64k RAM upgrade. I upgraded my C16 a few months ago and added 16k to 64k "Flick Switch" as some C16 games will not run in 64k mode ( Rockman being one of these games ), added heatsinks to the TED and CPU chips and my computer is still running perfect.
I purchased mine from AliExpress a while ago; eBay is a good source too. I also read on the Facebook C16 and Plus/4 group that Jameco Electronics in the US is a good place to look too.
Your mod is quite interesting, but honestly I don't think it worths the effort. The "destructive" mod isn't so destructive: only need 1 cut in the board OR one pin lifting (U8, pin #14).... but you don't need to remove the two multiplexers, so it's really easier and less risky. Then you solder the same two wires behind the board, in order to have a cleaner aspect of the component side, and you've done (of course you need to replace the ram chip). Faster and cleaner IMO.
You only need the "Diag Cartridge" if your Commodore 16 starts acting strange after performing the 64k RAM upgrade. I upgraded my C16 a few months ago and added 16k to 64k "Flick Switch" as some C16 games will not run in 64k mode ( Rockman being one of these games ), added heatsinks to the TED and CPU chips and my computer is still running perfect.
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Have you considered upgrading the 6510 adapter PCB so you can just plug the wires from the RAM upgrade into it? It'd be a lot cleaner and not a great deal of work to add two additional traces and thruholes. Plus you could avoid soldering on the original PCB, and it would be 100 percent reversible. That being said, it's a very slick and clean upgrade!
That's a really good idea! Thank you for the suggestion!
Glad this showed up in my Timeline, Steve! I have a C16 coming in from overseas right now - maybe I can buy one of those mods from you?
You only need the "Diag Cartridge" if your Commodore 16 starts acting strange after performing the 64k RAM upgrade. I upgraded my C16 a few months ago and added 16k to 64k "Flick Switch" as some C16 games will not run in 64k mode ( Rockman being one of these games ), added heatsinks to the TED and CPU chips and my computer is still running perfect.
That is nuts!
Wouldn't it be nice to add an extra 64kB of RAM to a Commodore 64, so it could keep up with the Commodore 128? Yes, that would be nice!
Where can I find the 32K ram modules you got? I'm ready to purchase everything to do this mod.
I purchased mine from AliExpress a while ago; eBay is a good source too. I also read on the Facebook C16 and Plus/4 group that Jameco Electronics in the US is a good place to look too.
Good. Not a fan of destructive upgrades. Why are people not using the expansion port at the back?
The best use of a c16 is as keyboard donor for a c64
for a VIC-20 too LOL
Your mod is quite interesting, but honestly I don't think it worths the effort. The "destructive" mod isn't so destructive: only need 1 cut in the board OR one pin lifting (U8, pin #14).... but you don't need to remove the two multiplexers, so it's really easier and less risky.
Then you solder the same two wires behind the board, in order to have a cleaner aspect of the component side, and you've done (of course you need to replace the ram chip).
Faster and cleaner IMO.
Having seen several of the old way of doing things close up, I'll have to disagree - this makes it a much neater and reversible install.
Cutting the original board is terrible.
I've never heard N-E-C pronounced as "neck" before
A habit I acquired after I worked with some DEC Alpha servers a long time ago. I would call them D-E-C servers and would often be corrected.
You only need the "Diag Cartridge" if your Commodore 16 starts acting strange after performing the 64k RAM upgrade. I upgraded my C16 a few months ago and added 16k to 64k "Flick Switch" as some C16 games will not run in 64k mode ( Rockman being one of these games ), added heatsinks to the TED and CPU chips and my computer is still running perfect.
Have you used the extra ram? Beyond testing once?
@@blackterminal I have indeed used the extra RAM and it works flawless.