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slow loading GenPLUS the megadrive games #418

Closed GoogleCodeExporter closed 8 years ago

GoogleCodeExporter commented 8 years ago 
What steps will reproduce the problem?
1. Load Megadrive games, fast loading MegaCD.

What is the expected output? What do you see instead?

What version of the emulator are you using (official, SVN revision,...)?
r965 and r960

Please provide any additional information below (Emulator settings, Console
setting,...)
Wii 4.3U NTSC, Cios de Hermes 5.1: 202[60], 222[38], 223[37], 224[57]. Cios 
d2x-v8: 245[37], 246[56], 247[53], 248[55], 249[38], 250[57], 251[58]
all updated ios

Original issue reported on code.google.com by alex.san...@gmail.com on 27 Jul 2015 at 7:59

GoogleCodeExporter commented 8 years ago 
You are getting slow loading speed because you are loading from an USB drive 
stuck to USB1 speed, which is quite slow on Wii.

As explained in the FAQ and in the User Manual, to get maximal (USB2) speed 
when loading from USB, you need to have official IOS58 installed and running 
when the emulator is launched, nothing more and nothing less. 

You can check the IOS version loaded by goingto the exit menu in the emulator.

The IOS version being loaded depends on what you used to launch the emulator 
(homebrew channel, forwarder, etc), the emulator has no control on this and has 
no use of all these cIOS either (which are only useful for backup loaders, not 
homebrew emulators).

To

Original comment by ekeeke31@gmail.com on 27 Jul 2015 at 10:19

GoogleCodeExporter commented 8 years ago 
So commented that MegaCD fast charge (not delay more than 1 second). Just give 
me slow loading megadrive games (takes more than 10 seconds before starting the 
game).
Thank you for responding promptly.

Original comment by alex.san...@gmail.com on 28 Jul 2015 at 12:12

GoogleCodeExporter commented 8 years ago 
[deleted comment]
GoogleCodeExporter commented 8 years ago 
[deleted comment]
GoogleCodeExporter commented 8 years ago 
[deleted comment]
GoogleCodeExporter commented 8 years ago 

Contrary to cartridge games, Mega CD games are not loaded entirely into memory, 
only a few bytes are loaded for identifying the game region, so the loading is 
pretty much instantly. However, slow device access speed will result in slow 
MegaCD emulation and audio playback issues during game as the CD image file is 
read constantly.

If you are loading your games from USB (which I presumed although you never 
clearly confirmed it), you NEED to have IOS58 running when the emulator is 
started. Is it the case ?

10s seems quite a lot for a Mega Drive game though, there might also be a 
problem with your storage device, defragmenting and eventually reformating it 
might help.

You should also try to load games from SD card as it is much faster.

Original comment by ekeeke31@gmail.com on 28 Jul 2015 at 5:26

GoogleCodeExporter commented 8 years ago 
Forget mentioning. USB charge and I have updated the ios 58. WiiMednafen also 
use the emulator which took over instantly roms.

Original comment by alex.san...@gmail.com on 28 Jul 2015 at 10:59

GoogleCodeExporter commented 8 years ago 
How do you launch the emulator ?

What ROM file are you trying to load (exact filename) ?

What IOS version is reported in emulator "exit" menu ?

I don't know why you have no problems in WiiMednafen but this is a completely 
different emulator and there could be various reasons (compiled with older 
version of libraries that are more compatible with your USB drive, different 
IOS being used, etc), all I know is that USB loading has been tested and works 
fine in Genesis Plus GX.

Original comment by ekeeke31@gmail.com on 28 Jul 2015 at 11:20

GoogleCodeExporter commented 8 years ago 
I've tried many and all load slowly. I think it may be configuration problem. I 
did not realize that version started to happen. but I tried with the latest 
patches and all is the same.
The circle starts spinning load and after about 10 seconds then display the 
information in the ROM and load instantly.
I hope that this data will be used.

Note: Excuse my English, because I am from Chile (I speak Spanish) and I'm 
using google translator.

Original comment by alex.san...@gmail.com on 28 Jul 2015 at 11:30

GoogleCodeExporter commented 8 years ago 
[deleted comment]
GoogleCodeExporter commented 8 years ago 
I don't speak spanish but I somehow understand your englih.

Please answer these questions correctly:

1) What do you mean by "information in the ROM" ? Do you mean it shows "Loading 
game..." with spinning circle during 10s then "Loading xxx bytes" very shortly 
and starts ? Or it stays on "Loading xxx bytes" during 10s then starts ?

2) Are the ROM files zipped or not zipped ?

3) When you browse through directories in the game selection menu, does it 
takes a lot of time to list the files ?

and again...

4) How do you start the emulator ? Homebrew Channel ? Forwarder Channel ? Other 
?

5) What IOS version is indicated in the window title when you select "exit" in 
emulator Main Menu ?

Original comment by ekeeke31@gmail.com on 28 Jul 2015 at 11:48

GoogleCodeExporter commented 8 years ago 
The problem already solved. Enter the system configuration. System switch to 
boot in "Bios & cart" and then probe random games. And they began to load in 
less than 2 seconds.
The GenPLUS the charge from a forwarder, and the menu appears IOS58 me out.
many thanks for your time.

Original comment by alex.san...@gmail.com on 29 Jul 2015 at 12:41