JMA Compression

kode54 · Post by **kode54** » Mon Nov 15, 2004 7:14 am

Post by **Nach** » Mon Nov 15, 2004 7:21 am

kode54 wrote:While you're at it...

That's nice and all, but what I have is better.

If any of the JMA testers want to embelish on that statement, feel free.

Post by **grinvader** » Mon Nov 15, 2004 2:29 pm

Nach wrote:If any of the JMA testers want to embelish on that statement, feel free.

...Let me dig it.

Code: Select all

-rw-r--r--  1 nach nach  7997201 2004-10-21 00:52 sfx.7z
-rwxrwxrwx  1 grin users 6989773 2004-10-21 00:53 sfx.jma

There. Point made.

kode54 · Post by **kode54** » Mon Nov 15, 2004 3:16 pm

grinvader wrote:
Nach wrote:If any of the JMA testers want to embelish on that statement, feel free.
...Let me dig it.
Code: Select all
-rw-r--r--  1 nach nach  7997201 2004-10-21 00:52 sfx.7z
-rwxrwxrwx  1 grin users 6989773 2004-10-21 00:53 sfx.jma
There. Point made.

Did you use ultra compression for that 7-Zip archive? From the command line:

7z a -t7z -mx=9 blah.7z [...]

Oh, and what did you pack into that archive?

Post by **grinvader** » Mon Nov 15, 2004 3:17 pm

Of course, ultra solid compression.

The archive holds all the superFX snes roms.
Namely:

Code: Select all

-rw-r--r-- nach/nach    524288 2004-10-21 00:07:01 Dirt Racer (E).SFC
-rw-r--r-- nach/nach    524288 2004-10-21 00:09:23 Dirt Trax FX (E).SFC
-rwxr--r-- nach/nach    524288 2004-10-21 00:04:18 Dirt Trax FX (U).SFC
-rwxr--r-- nach/nach   2097152 2004-10-20 23:58:28 Doom (E).SFC
-rwxr--r-- nach/nach   2097152 2004-10-20 23:58:28 Doom (J).SFC
-rwxr--r-- nach/nach   2097152 2004-10-20 23:58:28 Doom (U).SFC
-rwxr--r-- nach/nach   1048576 2004-10-20 23:59:13 Star Fox 2 (Private Build) (J).SFC
-rwxr--r-- nach/nach   1048576 2004-10-20 23:58:28 Star Fox CE (U).SFC
-rwxr--r-- nach/nach   1048576 2004-10-20 23:58:28 Star Fox (J).SFC
-rwxr--r-- nach/nach   1048576 2004-10-20 23:58:28 Star Fox (U).SFC
-rwxr--r-- nach/nach   1048576 2004-10-20 23:58:28 Star Fox (U)(v1.2).SFC
-rwxr--r-- nach/nach   1048576 2004-10-20 23:58:28 Starwing CE (E).SFC
-rwxr--r-- nach/nach   1048576 2004-10-20 23:58:29 Starwing CE (G).SFC
-rwxr--r-- nach/nach   1048576 2004-10-20 23:58:29 Starwing (E).SFC
-rwxr--r-- nach/nach   1048576 2004-10-20 23:58:29 Starwing (E)(v1.1).SFC
-rwxr--r-- nach/nach   1048576 2004-10-20 23:58:29 Starwing (G).SFC
-rwxr--r-- nach/nach   1048576 2004-10-20 23:58:29 Stunt Race FX (E).SFC
-rwxr--r-- nach/nach   1048576 2004-10-20 23:58:29 Stunt Race FX (U)(v1.1).SFC
-rwxr--r-- nach/nach   2097152 2004-10-20 23:58:29 Super Mario World 2 - Yoshi's Island (E).SFC
-rwxr--r-- nach/nach   2097152 2004-10-20 23:58:30 Super Mario World 2 - Yoshi's Island (E)(v1.1).SFC
-rwxr--r-- nach/nach   2097152 2004-10-20 23:58:30 Super Mario World 2 - Yoshi's Island (J).SFC
-rwxr--r-- nach/nach   2097152 2004-10-20 23:58:30 Super Mario World 2 - Yoshi's Island (J)(v1.1).SFC
-rwxr--r-- nach/nach   2097152 2004-10-20 23:58:30 Super Mario World 2 - Yoshi's Island (J)(v1.2).SFC
-rwxr--r-- nach/nach   2097152 2004-10-20 23:58:31 Super Mario World 2 - Yoshi's Island (U).SFC
-rwxr--r-- nach/nach   2097152 2004-10-20 23:58:32 Super Mario World 2 - Yoshi's Island (U)(v1.1).SFC
-rwxr--r-- nach/nach    524288 2004-10-21 00:01:14 Vortex (E).SFC
-rwxr--r-- nach/nach    524288 2004-10-21 00:01:14 Vortex (J).SFC
-rwxr--r-- nach/nach    524288 2004-10-21 00:01:14 Vortex (U).SFC
-rwxr--r-- nach/nach   1048576 2004-10-20 23:58:32 Wild Trax (J)(v1.1).SFC
-rwxr--r-- nach/nach   2097152 2004-10-20 23:58:32 Winter Gold (E).SFC

kode54 · Post by **kode54** » Mon Nov 15, 2004 3:24 pm

Okay, but unpacking will be really fun when people start packing their entire collections in one solid archive. I doubt that will prevent the appearance of a nsrt_fullset.jma on P2P networks.

Either way, JMA support will need to include indexing archives as directories, so a ROM image can be selected from their contents. Hmm, not to mention, if IPS patches are to be packed inside with their respective games, they will need to be conveniently ordered to follow the ROM image, so they may be loaded sequentially. Otherwise, more suffering from the solid archive extraction.

Post by **Nach** » Mon Nov 15, 2004 3:28 pm

I highly doubt anyone has enough RAM to get an entire NSRT set into one solid archive.

I designed the container in such a way that has extra uncompressed fields which allows for unlimited expansion with only a single byte overhead.

Which basically means any ideas we come up with can be done immediatly, without affecting tools extraction will the standard unjma in any way what so ever.

Post by **Nach** » Sun Nov 21, 2004 1:44 am

Thanks to the following people, ZSNES SDL port now has JMA support:

Igor Pavlov
Andrea Mazzoleni
grinvader
theoddone33
zones
malcster
Lord Nightmare
CL
Nach

ipher and I are currently trying to get the other ports up to speed.

Post by **Nach** » Sun Nov 21, 2004 4:03 am

Thanks to a very patient ipher, ZSNESW now has JMA support

ZSNES DOS port has the JMA code compiled in, but for some reason won't load them, I'll be looking into it.

Tallgeese · Post by **Tallgeese** » Sun Nov 21, 2004 5:13 am

Drool.

So, I assme to actually compress to JMA I need to DL the newest NSRT RC?

Post by **grinvader** » Sun Nov 21, 2004 6:07 am

X Prime wrote:Drool.

So, I assme to actually compress to JMA I need to DL the newest NSRT RC?

You assume correctly.

Post by **Nach** » Sun Nov 21, 2004 10:45 am

Note the newest one isn't released to the general public yet.

Post by **Nach** » Sun Nov 21, 2004 2:30 pm

ZSNES DOS port is now 100% JMA compatible.

anewuser · Post by **anewuser** » Sun Nov 21, 2004 4:51 pm

Will JMA support be added to Snes9x?
I am not a programmer, but are you going to release the JMA file format specification?

Post by **Nach** » Sun Nov 21, 2004 5:54 pm

anewuser wrote:Will JMA support be added to Snes9x?

Already been working on it.

anewuser wrote: I am not a programmer, but are you going to release the JMA file format specification?

Yes. Will be a while till I get a chance to write up some good docs though.

kieran_ · Post by **kieran_** » Sun Nov 21, 2004 6:16 pm

Nach wrote:
anewuser wrote:Will JMA support be added to Snes9x?
Already been working on it.

Sweet.

Post by **Agozer** » Sun Nov 21, 2004 6:25 pm

very nice work Nach and all those that contributed in some way.

Oblivion · Post by **Oblivion** » Sun Nov 21, 2004 8:18 pm

To all involved: Awesomeness to the 104%

Post by **grinvader** » Mon Nov 22, 2004 2:00 pm

This really fits the whole jma thing imo:

kieran_ · Post by **kieran_** » Mon Nov 22, 2004 2:08 pm

grinvader wrote:This really fits the whole jma thing imo:

That is pretty fucking cool!

daft · Post by **daft** » Mon Nov 22, 2004 10:03 pm

grinvader wrote:This really fits the whole jma thing imo:

Looks cool. Btw, is there a way for the load game window to not cut off rom names and directories? Perhaps a narrower font or wider window?

Post by **Agozer** » Mon Nov 22, 2004 10:43 pm

daft wrote: Looks cool. Btw, is there a way for the load game window to not cut off rom names and directories? Perhaps a narrower font or wider window?

The GUI is still mainly coded in ASM which means that modifying it is a pain in the ass. So no I guess

ipher · Post by **ipher** » Mon Nov 22, 2004 11:09 pm

narrow font works, but unfortunately, ZSNES uses the same font for the entire GUI... so you would have to change the entire GUI font which has been done before, but doesn't look too good.

TheDanish · Post by **TheDanish** » Tue Nov 23, 2004 7:18 pm

ipher wrote:narrow font works, but unfortunately, ZSNES uses the same font for the entire GUI... so you would have to change the entire GUI font which has been done before, but doesn't look too good.

Maybe have the text scroll automatically while it's highlighted?

Post by **grinvader** » Tue Nov 23, 2004 7:50 pm

TheDanish wrote:
ipher wrote:narrow font works, but unfortunately, ZSNES uses the same font for the entire GUI... so you would have to change the entire GUI font which has been done before, but doesn't look too good.
Maybe have the text scroll automatically while it's highlighted?

Can you spell ASM HELL ?