forum.system-cfg.com

hi everyone!

i’m seeing that vg5k emulation on mame/mess emulator still lacks several features, like different ram sizes (expansion), .mrx dumps/snapshots, etc.

since mamedev is hosted at github by default - https://github.com/mamedev - i guess that would be great seeing these improvements soon

(btw, i’m not misregretting emulators like dcvg5k - the fact is that mame/mess is really needed of such improvements/features - and besides mame/mess is available in Debian/Ubuntu default repositories since years ago, the same we can’t say about dcvg5k )

thanks!

You're tempting me. I've wrote some MAME code for a driver almost 20 years ago... time goes fast.

My todo list is already so long already...

From what I see from the MAME code on GitHub, there seem to be a 16kB and 32kB extention option.

The emulation seems pretty complete. And as Daniel is credited as helper, it's a sort of seal of quality

At least this seems to work. You can choose 16k, 32k or 48k.

i didn’t know that "-ramsize 48k" argument, thanks! (and i thought that it was available at the "tab" options)
but anyway, .mrx snapshot/dump support is still missing, isn’t it?

i think that there is a bug found on multicolor display - it shows quite differently among mame/mess and dcvg5k - i’m afraid that what dcvg5k shows is closer to the real machine

This is surprising, because MESS code for EF9345 emulation was copied from the dcvg5k sources.

results looks really different, it is really worth trying... - i guess we might need to do some kind of “bridge loading tests” for that...

perhaps that code copying happened before some probably recent bugfixes on dcvg5k - i have no idea about this because i didn’t follow the development evolution of both that closely, but it seems quite likely that happened this way...

Did you tried on a real VG5000 ?

i don’t have one - this is also why i shared the example here

i think i’m seeing what is happening - the mame/mess version i’m using is from ubuntu 16.10 repository, and it might be quite outdated - actually, http://i.xomf.com/cpvvj.png and http://i.xomf.com/zsjvj.png are from the same example i shared above

i created another example (source also included in the attachment as usual, i guess it explains clearly what i did)

on mess/mame: http://i.xomf.com/hsdbh.png
on dcvg5k: http://i.xomf.com/hqdcm.png

please let me know which one is closer to the real machine, and if any of the emulators i used are not that outdated

I'll try to launch this on a real computer this week-end if no-one does it before.

thanks!