ISO Loader 0.8.x Beta + preview of DreamShell v4.0 RC 5

[SWAT]

(15.04.2023 16:23)fafadou писал(а):   Else An other idea from a noob as me in order to win spaces, is to remove the low level module from ext and full version because those loaders don't manage cdda.
I guess is already done or else you already think about that and you didn't do it for a good reason

Low-level mode present only in the full loader. And the full loader support CDDA as well (not in low-level mode of course). It's support all features, but uses much more memory, that the problem for it. You can use VMU emu and screenshots with CDDA, but not all games will work with big loader.

(15.04.2023 16:23)fafadou писал(а):  The loaders are smaller than more 120 bytes except for full version, well done @Swat

Actually much more, but I immediately took this place with new code
This is all that's left.

(15.04.2023 19:37)fafadou писал(а):  Exhibition of speed : the cdda plays well but the game is low and finally the console reboot.

Change TMU.

(15.04.2023 19:37)fafadou писал(а):  All wince games with cdda used the same config, lower memory, DMA TMU2, IRQ, true dma. I know you don't like the idea to build a loader especially for wince games. Just in order to understand, what the difference when we choosed wince, auto or katana in the OS preset ?
The only thing I understand is when we choosed homebrew OS, there is a descrambling action if it needs.

The loaders have a number of logical conditions for different types of OS. For example, IRQ hooking works differently, a binary file is loaded differently, and memory is used differently because all 64 kilobytes are available in the lower memory, unlike katana, and no access at high memory. Also for CDDA track switching doesn't do in IRQ as in other OS can be.
Most of the time I'm good at detecting this automatically, but sometimes it needs to be manually selected for some homebrew.

(16.04.2023 04:35)sundance2 писал(а):  I'm following the development of this new version of Dreamshell with great admiration,
and I'm especially curious about the improved ISO Loader v0.8.x
(note, for reference, my Dreamcast is currently running v0.6.11).

Specifically, for a Dreamcast with a SD Card reader connected via the Serial Port,
what are the main benefits expected from this new version ?

I've been looking at the logs for guidance, and so far,
I've mostly noticed some potential improvements to CDDA support
(which would still be great, since CDDA seems broken on my local version of ISO Loader).
What else could be expected?

CDDA should be improved and for SD, but need use ADPCM format of tracks for this device (otherwise gameplay will slower) and can be different compatibility in some cases.
VMU emulation and screenshots are supported for SD too. It also have little speed improvements for SPI interface.
I'm not test SD properly, but I think you can use it right now instead of 0.6.11.