Emulator and blitter

[KanedaFr]

Hi,

 

Is there any emulator I could use to test blitter ?

From what I see, I already see differences between bigP and VJ.

 

I already paid a lot the fact that I can't test en real HW so if no emulator could be trusted about blitter, I'll stop there

[Zerosquare]

You can upload your blitter test code, let one of us run it on a real Jaguar, and post a picture of the result. That way you'll know which emulator (if any) emulates it correctly.

[KanedaFr]

Available on my repo for anyone curious

https://bitbucket.org/SpritesMind/blitter_test/downloads/

 

Updated everytime i add a test (or get feedback on real HW)

[dilinger]

9 hours ago, KanedaFr said:

Is there any emulator I could use to test blitter ?

From what I see, I already see differences between bigP and VJ.

BigPEmu is better than VJ/VJ-Rx for sure.

[jguff]

Believe BigPEmu-developer-build, in conjunction with Noesis, will allow you to step-through/visualize-results of individual blits.  Believe Whitehouse demonstrates that ability, within one of his youtube videos.

 

BigPEmu runs all commercial games, so blitter is likely more accurate with BigPEmu.

Edited November 7 by jguff

[Ericde45]

i won't be very kind with your project, but building a whole game without a real jaguar seems impossible, and i did a whole game

there is a lot of things that are not the same between bigpemu and a real hardware. some chipsets bugs are not present in bigpemu, timings are not right at all, for all components, and you don't have the global bus load

it's even difficult to do a whole game if you are not able to test on at least the 2 jaguar models , + 50 and 60 Hz

if you want to do all in emulator, you should use jagstudio, and strictly stays in jagstudio functions. might be possible this way.

[+CyranoJ]

45 minutes ago, Ericde45 said:

if you want to do all in emulator, you should use jagstudio, and strictly stays in jagstudio functions. might be possible this way.

 

That won't help much, bigp will just let you completely overload the bus with objects. Being able to run everything and being accurate are two completely different things, and bigp focuses on the first.

Edited November 8 by CyranoJ

[KanedaFr]

Unfortunately, it's exactly what I did  (use JS only) and it's exactly what happened (overload)

 

And yes, I'll probably stop Jaguar dev at this rate because I can"t share ROM and ask for feedback everytime I add a feature.

+ there is still a lot of things I'm missing yet and if I can't rely on emulator to test and learn, it's a no go

A Jaguar is on my to-buy list but it's way out my budget so I doubt I ever own one

 

Edited November 8 by KanedaFr

[Ericde45]

and you need Jaguar + GameDrive, ont only Jaguar.

but once you have that, you have a rolls to code on . you can compile+upload+run on GD/Jaguar in one batch, at full speed through usb.

there is not a lot of old consoles that have a so good setup to code on them.

 

[KanedaFr]

I have an Everdrive with USB for Genny dev 

SMS/GG dev is relatively easy because Emulicious is acurate (I debugged raster related bug with it!!), you could keep real harware test for final produc

I never tried NES but Mesen is famous for being acurate too 

 

but yes, on Wonderswan and Lynx, the setup isn't that good (build, flash, plug, switch on) 

 

Every system is different and clearly the Jaguar is the most complex one I saw for now, so i'm not really surprised
If only bigPEmu was more accurate...but I can't complain, it's way easier that it should be years ago

 

[Stephen Moss]

@KanedaFr it is not clear if you want to emulate because you do not have an actual Jaguar or no physical cart to load you code in to test, if the latter then a SkunkBoard may be cheaper then a GameDrive as many people who may have purchased them to play demo's on could have switched to a GameDrive and so have SkunkBoards they are no longer using available. 

[42bs]

On 11/10/2024 at 2:16 AM, KanedaFr said:

Lynx, the setup isn't that good (build, flash, plug, switch on) 

Felix is 99.99% correct Lynx emulation. And with a flash card plus uBLL loader you can easily test code up to 48k.

I do most development on Felix and only test corner cases on the real HW.

[Fadest]

5 hours ago, Stephen Moss said:

@KanedaFr it is not clear if you want to emulate because you do not have an actual Jaguar or no physical cart to load you code in to test, if the latter then a SkunkBoard may be cheaper then a GameDrive as many people who may have purchased them to play demo's on could have switched to a GameDrive and so have SkunkBoards they are no longer using available. 

Kaneda do not have a Jaguar. If he had one, the skunkboard would not be a problem.

[Zerosquare]

Sounds like a business opportunity.

 

Introducing Jaguar As A Service™. All you need is a web browser. Just upload your ROM file and watch it run on a real Jaguar, with real-time video streaming. Don't miss our welcome offer for only $9.99 per month!

 

I'm gonna get rich fast.

[42bs]

14 minutes ago, Zerosquare said:

Sounds like a business opportunity.

 

Introducing Jaguar As A Service™. All you need is a web browser. Just upload your ROM file and watch it run on a real Jaguar, with real-time video streaming. Don't miss our welcome offer for only $9.99 per month!

 

I'm gonna get rich fast.

The "Cloud-Emulator"

 

[+CyranoJ]

5 hours ago, Zerosquare said:

Sounds like a business opportunity.

 

Introducing Jaguar As A Service™. All you need is a web browser. Just upload your ROM file and watch it run on a real Jaguar, with real-time video streaming. Don't miss our welcome offer for only $9.99 per month!

 

I'm gonna get rich fast.

 

Could do live sessions where the subscriber shouts LEFT, LEFT, UP, B, B, STAR+HASH! and you press the buttons, so they can play games....