Denial

Yep, loads and seems to run fine. Played around with it for a bit, making pics on the screen.

Jim

Sadly, (https://dateipfa.de/.Public/denial/tools/ram_check.zip) runs and then locks up. No text printed on screen. Not sure what is going on.

Jim

Unit boots to 28159 bytes free

detect.prg blinks and returns.
max.prg resets with 31103 bytes free
3k.prg resets with 3711 bytes free

Can't go any further until I have working COLOR RAM.

Jim

I noticed (and have dloaded the relevant data) your VFLI stuff, and thanks for providing that and the link. I worry that the VFLI mod (which I can't try yet, as I suspect it needs working color ram, and I don't have it working as yet) will be a bridge too far for initial testing. IN other words, if ...

Yep, grabbed the map from your previous posts. But, it's still unclear how I should make the 16kB relocatable across the 64kB. the default is 8,9,0,1 so should the other configs be a,b,2,3, c,d,4,5 and e,f,6,7 or Should I do something a bit more sane for the other options... :-) New board is held up...

If I can master the arcane memory map of the VIC-I, I will see about a production run. As for RAM, like UltiMEM, it can have access to 512kB+ of RAM, both from the VIC-I and the CPU. But, it depends on how much RAM is of actual use. UltiMEM has seen limited use beyond just being a 35k expander, so t...

OK. I wonder if there's a way with SRAM and some of my uC stuff to read the actual state of RAM without even needing to use the save routines.

Jim

When you say non initialized ram, are you talking about RAM before the RAM test runs? Or, are you asking for the default state of RAM once BASIC has initialized and the cursor appears?

Jim

I think v2 proto has everything I need to continue the research:
Jim

It did. Of course, now this means I need to start working the "next great VIC app", and I am sure I will run into problems when I try to determine how to make this work with UltiMEM, but at least I am off to a running start.

Jim

Sorry for the delay, but finally was able to get some concerted time to play around with my ideas: Initial efforts: https://i.postimg.cc/4YSK5Z0w/IMG-0095.jpg Wire City! https://i.postimg.cc/FYRd31T7/IMG-0116.jpg After a bit of cleanup: https://i.postimg.cc/JyHsYvV8/IMG-0117.jpg Current situation is...

ops wrote: ↑Sat Jan 11, 2020 3:28 pm I just committed to GitHub a cart stub that I made some time ago when playing with CC65. There is probably room for improvement but I hope this gets you going.

https://github.com/ops/vic-cc65-cart

Thanks tons! Playing with it now.

Jim

Groepaz: Poke...

Ah, yes, I didn't know that it did. Still, I think Ultimem will be a better option, as it offers you to fill all the VIC-20 RAM not just 256 bytes...

Jim

Not sure I understand. xvic has a GeoRAM function?

Or, are you referring to Ultimem? xvic has an ultimem setting.

Ultimem would be far more useful than GeoRAM, as UltiMem allows 8kB RAM pages, not just 256 byte ones.

jim