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PeteAU · 13 January 2017, 07:40

Hi,

Anybody receive the boards I sent yet? Might be too soon, they should start arriving next week.

So, I've taken it a step further and made a prototype gary-adapter.
Now I've put 3 memory chips on the original board, and the adapter should allow them to be mapped into the appropriate place in memory.

And... tadaaa.. it works. Look at all that extra slow RAM, party like it's 1987!

Unfortunately I can't get the 3rd chip working, I suspect it's because kickstart 1.2 doesn't allow it and I need to get a 1.3 kick rom.

This prototype is no good for 1MB chip RAM, but I see what I did wrong and could make it work for 1MB chip in the future.

If somebody wants to replicate this, it's pretty easy and no expensive parts needed.

Cheers,

13 January 2017, 07:40	#26
PeteAU Registered User Join Date: Dec 2016 Location: Australia Posts: 113	More than 512K on a normal A500 Hi, Anybody receive the boards I sent yet? Might be too soon, they should start arriving next week. So, I've taken it a step further and made a prototype gary-adapter. Now I've put 3 memory chips on the original board, and the adapter should allow them to be mapped into the appropriate place in memory. And... tadaaa.. it works. Look at all that extra slow RAM, party like it's 1987! Unfortunately I can't get the 3rd chip working, I suspect it's because kickstart 1.2 doesn't allow it and I need to get a 1.3 kick rom. This prototype is no good for 1MB chip RAM, but I see what I did wrong and could make it work for 1MB chip in the future. If somebody wants to replicate this, it's pretty easy and no expensive parts needed. Cheers, Attached Thumbnails