lr-mame2003 driver improvement and backport

darknior

@gamez-fan is it possible to Outrunners single screen mode
https://github.com/libretro/mame2003-libretro/issues/155
Thanks

arcadez2003

@darknior said in lr-mame2003 driver improvement and backport:

I'm lost, please can you list ROMs to use from MAMEoXtra ?

bbbuster
ghostlop
ironclad
sengoku3
sngoku3n
zupapa
zupapan
kof2001
kof2k1nd
kf2k1pls
kof2002
kof2k2nd
kf2k2pa
mslug4
mslug4nd
rotd
rotdnd
matrim
pnyaa
pnyaan
mslug5
mslug5nd
svcchaos
svcnd
samsho5
samsh5nd
samsh5sp
kof2003d
crswd2bl
zintrckb
lasthope

@darknior said in lr-mame2003 driver improvement and backport:

What do you want i verify ? The game with MAME on PC ??

Just boot Vasara in this Emulator and tell me if the sound is slow in this game or not.

arcadez2003

@darknior said in lr-mame2003 driver improvement and backport:

@gamez-fan is it possible to Outrunners single screen mode
https://github.com/libretro/mame2003-libretro/issues/155
Thanks

Yes but you have to do it via the dip switch options look for monitors and select A Only

PORT_START	// port F
PORT_DIPNAME( 0x03, 0x01, "Monitors" )
PORT_DIPSETTING(    0x01, "A only" )
PORT_DIPSETTING(    0x03, "A and B" )
PORT_DIPSETTING(    0x02, "B only" )

darknior

FIX - Might as well get Title Fight to work (titlef) - https://github.com/libretro/mame2003-libretro/pull/156

arcadez2003

The video above is from newer MAME where they totally broke the background Gfx, in MAME78 with the older video code it'll look more like this.......

![alt text]

Not perfect but better than having none at all :)

darknior

FIX - Make Air Rescue Work (arescue) https://github.com/libretro/mame2003-libretro/pull/157

darknior

FIX : Optional Williams sound with the speedups : https://github.com/libretro/mame2003-libretro/pull/159

Removed in MAME61 these are the speedhacks that will significantly boost performance
in the following Midway games..........

All Midway Y-Unit
All Midway T-Unit barring MK2 which uses DCS sound

This could be of great benefit for users of this MAME core on lesser hardware. Drivers that will be affected by this change...

mcr68.c
midtunit.c
midyunit.c
williams.c
mcr_sndhrdw..c

darknior

Might as well add Puzz Loop 2 which was playable from MAME 93.u2, this is the last of the later CPS dumps which can be added to the MAME78 codebase due to changes with the XOR decryption handling from MAME100 onwards.

https://github.com/libretro/mame2003-libretro/pull/160

darknior

https://github.com/libretro/mame2003-libretro/pull/162

0.91: David Haywood increased interleave in MegaSys1 driver, fixing speed in Avenging Spirit.

PeriodicLogic

Two possibly very simplistic questions...

To take advantage of these improvements and backports, does one simply need to update lr-mame2003 from source?
Does one still use the 0.78 roms, or does one need earlier/later roms to account for the changes being made?

Thanks in advance,
Rob

zerojay

@darknior said in lr-mame2003 driver improvement and backport:

FIX : Optional Williams sound with the speedups : https://github.com/libretro/mame2003-libretro/pull/159

Removed in MAME61 these are the speedhacks that will significantly boost performance
in the following Midway games..........

All Midway Y-Unit
All Midway T-Unit barring MK2 which uses DCS sound

This could be of great benefit for users of this MAME core on lesser hardware. Drivers that will be affected by this change...

mcr68.c

midtunit.c

midyunit.c

williams.c

mcr_sndhrdw..c

I was really hoping that openice would be one of the games that would get these speed boosts. Oh well. Right now, it runs with slowdown on mame2003 and runs perfect speed on anything older but nvram doesn't get written out so it's useless.

arcadez2003

@periodiclogic said in lr-mame2003 driver improvement and backport:

Two possibly very simplistic questions...

To take advantage of these improvements and backports, does one simply need to update lr-mame2003 from source?

Does one still use the 0.78 roms, or does one need earlier/later roms to account for the changes being made?

Thanks in advance,
Rob

Yes simply compile your own build from the latest source, all Roms that were supported previously are still MAME78 the newly supported games
will need Roms from later MAME builds i think someone was gonna create a dat to help in that regard.

arcadez2003

@zerojay said in lr-mame2003 driver improvement and backport:

I was really hoping that openice would be one of the games that would get these speed boosts. Oh well. Right now, it runs with slowdown on mame2003 and runs perfect speed on anything older but nvram doesn't get written out so it's useless.

Totally experimental as i found it can break the sound in some T-Unit games not using the DCS soundcore, which will require a workaround to sort
but just now for testing purposes if you can compile your own build in the MAME-2003 source goto src/vidhrdw/midtunit and do this.......

#define FAST_DMA 1 /* DMAs complete immediately; reduces number of CPU switches */

This should boost up the performance in Open Ice Challenge but enough to playable on the Rpi im not sure..?? you'll need to try it and see.

zerojay

@gamez-fan Thanks, I'll give it a shot and let you know.

markwkidd

@gamez-fan said in lr-mame2003 driver improvement and backport:

i think someone was gonna create a dat to help in that regard.

Once the codebase and ROM checksums stabilize I'll put together a DAT. ( @gamez-fan I enjoy periodically checking the mame2003 commit log to see you at work with backports!)

For now if people want to experiment they might try MAME 0.139 (MAME 2010) and MAME 0.106 (AdvanceMAME) romsets. There is a good chance they will match since they are from a similar period to the one where most of these additions are coming from.

markwkidd

@zerojay said in lr-mame2003 driver improvement and backport:

nvram doesn't get written out

Could you say more about what you mean by this?

arcadez2003

@markwkidd said in lr-mame2003 driver improvement and backport:

Once the codebase and ROM checksums stabilize I'll put together a DAT. ( @gamez-fan I enjoy periodically checking the mame2003 commit log to see you at work with backports!)

Thanks man!! im going to add in support for a couple more games later and im plodding away on adding sound to another few, but im constrained
really by the codebase being 78 if it had been say 79 after all the CPU and Mem changes between those builds then far more could have been backported
as MAME 78 is missing support for alotta good Data East, Kaneko16, NMK16 and Sega games plus the Seibu Raiden Fighters Series.

It would have been interesting to have seen how some of the above games might performed in this older MAME core but alas not to be as the code for
those is either not there not compatable or the workload needed just too great.

darknior

https://github.com/libretro/mame2003-libretro/pull/163

@gamez-fan Hook up the recently dumped sound MCU
Unfortunately i cant do the same for Vimana as the MCU needs some input tag handling
not compatable with the MAME78 input code.