[ongoing] DosBox AGA (v0.74)

[NovaCoder]

Interesting, looks like 3000 is too much for your CPU at the moment. This port really needs a faster core implementation to see the improvements I've made to the rendering code.

[xboxown]

Originally Posted by NovaCoder

Interesting, looks like 3000 is too much for your CPU at the moment. This port really needs a faster core implementation to see the improvements I've made to the rendering code.

Do you own a Vampire?

[jurassicman]

I've checked the latest version and I have the same graphic problems.
Attached you can see PC Calcio 3 with the old version and with these new versions during the boot and at the copy protection menu:

[NovaCoder]

Originally Posted by jurassicman

I've checked the latest version and I have the same graphic problems.
Attached you can see PC Calcio 3 with the old version and with these new versions during the boot and at the copy protection menu:

OK thanks, that helps. I think I know what the bug is.

No, don't have a Vampire or even an Amiga

[NovaCoder]

Another attempt in the Zone for testing, this version has an auto scaling CPU which seems to work well for WinUAE but no idea how it will work on real hardware.

The idea is that it just adjusts cycles in real-time to match what your CPU can handle.

[jurassicman]

Originally Posted by NovaCoder

Another attempt in the Zone for testing, this version has an auto scaling CPU which seems to work well for WinUAE but no idea how it will work on real hardware.

The idea is that it just adjusts cycles in real-time to match what your CPU can handle.

Great, I'll test it later this evening on real A1200 with 1260/66

[kikems]

A warper tool using this DOSbox AGA will be an interesting thing.

[jurassicman]

I tested the new version on my real A1200 with 1260... it is probably a bit faster but I can't be sure since the graphic problem persists.

[NovaCoder]

Originally Posted by jurassicman

I tested the new version on my real A1200 with 1260... it is probably a bit faster but I can't be sure since the graphic problem persists.

Thanks, I'll look at fixing the corruption next

[Reido]

[ Show youtube player ]

V0.74_19

Sorry to report that it was slow on real hardware

[xboxown]

Originally Posted by Reido

[ Show youtube player ]

V0.74_19

Sorry to report that it was slow on real hardware

This look slow on real hardware

[NovaCoder]

Originally Posted by Reido

[ Show youtube player ]

V0.74_19

Sorry to report that it was slow on real hardware

It's very tricky to develop for hardware you don't own but I'll make one more attempt on this sucker to try and get it working a bit better

Thanks for testing

[Reido]

Absolutely it must be a pain in the ass putting in all that work and not being able to test out fully. Great work though

[AMike]

Am I blind? I can't find the dosbox betas in TheZone?

[NovaCoder]

Originally Posted by AMike

Am I blind? I can't find the dosbox betas in TheZone?

Yes it's in the Zone, been there for ages

I've also included ECS LOOM for someone to test on a real Amiga.

Thanks

[Reido]

I'll have a go this eve

Unfortunately my HD is giving me the old Workbench not validated crap again! I'll sort it out and try again....

[AMike]

Will asap test the new version.

[NeoHippie2016]

No WarpOS Port for my Blizzard PPC 166 MHz in sight?

[NovaCoder]

Originally Posted by NeoHippie2016

No WarpOS Port for my Blizzard PPC 166 MHz in sight?

Not from me but someone else might do one

Update: I've now swapped to v0.70 which from my testing looks like the best one (still don't expect any miracles though!)

[JimDrew]

Originally Posted by amigoun

I do not want to argue with you, because you always write the opposite and never prove anything, but only a few facts: PCX does not support protected mode, and PC-Task does, PC-Task have dynamic mode that results in much faster emu than the interpretive.
RTG modes are not supported on PCX, but on PC-Task are. Only lo-res mode is claimed to be retargetable on PCX to CGX/P96, but that freezes for me.

Saw this old post and had to chuckle...

The real facts are:

* PCX most certainly supports protected mode. Otherwise DOS4GW and other extenders required for protected mode games (like DOOM), as well as Windows would not work - and they do.

* PC-Task is slower in every single benchmark program. The CPU transcription (which converts x86 code blocks to 68K code blocks) yields a substantially faster emulator providing the code is frequently called. Of course you can have huge transcription buffers.

* MODE13 (320x200 8 bit mode) is one where the screen mode can be deliberately selected, however, you can mode promote any of the screens to a Picasso96 compatible board.

There is a video floating around comparing FUSION to Shapeshifter and PCX to PC-Task. It's pretty clear my emulations are faster.

I spent some time with Gunnar a couple of years ago, working on specific Vampire core instructions that could possibly speed up PCX.. things like byte swapping as data is loaded or stored (the x86 and 68K CPUs access words/longwords backwards from each other). It turns out that the Vampire's caching is so good that specific instructions do not help at all. The byte swap instruction(s) are amortized into the CPU thread resulting in no difference in speed.