Quake 3 on OS4 Classic

[delshay]

High speed memory access is needed but most importantly the PCI slot needs to be fairly fast if using Bvision/Cybervision this makes a massive difference not just in playing games but also workbench itself but unfortunately this is not available to most users.

Drivers may possibly need to improve as one user posted a difference in benchmark between morphOS & OS4.x but I am no programmer so maybe someone can explain the difference in benchmark figures.

Please do not start a red vs blue.

[delshay]

+1 SCSI driver.

This will become a important factor in years to come for classic users. The choice between FastATA & SCSI,I would pick SCSI.

I would be nice also if someone could look at the Blizzard flashrom,what can be added,what can be changed,can SCSI be improved via the flashrom,improved to support OS4.x directly,but its a matter of who has the knowledge to alter it if possible.


Blizzard PCI slot @ AGP speed still in progress and show benchmarks figures I have never seen before.

[delshay]

Perhaps it's time to hack 53c710 scsi driver to work on BlizzardPPC? Radoslaw Kujawa already added support for both scsi and g-rex and perhaps he could give you some hints, you can even check out BSD sources  :-)

https://github.com/jsonn/src/tree/trunk/sys/arch/amiga

I was forced to upgrade to 53c710-1 "faster version" as SCSI needs to cope with faster bus. There's no doubt this game can be played on classic amiga,but I think its going to need the minimum 41.5Mhz PCI bus.

This game works fine on a PC with Permedia 2 and AGP slot,so a fast PCI slot should allow this game to work on classic.

[delshay]

It's not all about PCI speed. If the gfx card has enough memory to hold all the textures for a level then the game is not going to use the PCI bus nearly as much. A Voodoo 3 (16MB) or Voodoo4/5 (32MB) even with a slow PCI bus Mediator may outperform the Permedia 2 if it has to recopy textures across the PCI bus very often.

Not so sure of this.

What was talked about was "DMA driver" for Permedia 2 on classic amiga. Bvision has already shown it can operate at AGP speed but I think its missing a few AGP features.

Upload texture across 66Mhz+ PCI bus with DMA may show same performance as on PC.

[delshay]

There is a video on youtube showing this game with permedia 2,whatever the limitation permedia 2 has it does not seem to affect performance.

Do a search Permedia 2 Quake 3 on youtube (on a PC).

From my point of view Bvision should be able to do this given it has a fast enough bus.

[delshay]

Which revision Blizzard card did you attempt DMA?

Revision 2 is probably the best card to attempt DMA,but both revisions have their Pros and Cons.

Permedia 2 documentation has increase to over 400 pages believed to contain hints & tips.

[delshay]

I don't think L2 cache would make much of a difference. Fast ram access is the highest it has ever been on classic and is not far off sdram performance.

Bvision(s) here do have one advantage over PC card(s) that use Permedia 2, Sgram is clocking higher than "any" PC version.

[delshay]

I for one did not say anything about overclocking in this thread.

Blizzard cards have 83Mhz logic same for Bvision.

Where higher clock is required components are changed to leave it in a non overclock state ie CPU,SCSI & Sgram. All use faster versions.

This is pretty much the standard components that are changed here.

SCSI is the latest additional change and moves to last revision.

[delshay]

I wouldn't underestimate the improvements a functioning L2 cache would make. Memory speeds haven't increased as sharply in real terms as CPU speeds. My now 7-year old PC has then state-of-the-art DDR3 memory running right up to it's cycle timing limits (which are still better than a lot of RAM on sale today). The CPU still has 12MiB of L2 cache. Assuming memtest86 is telling the truth, the performance gap is still as big as it was back when the 603e was still in widespread use.

The 603e processor will not benefit much of a performance here with L2 cache. It may benefit other computers that don't run CPU with 75Mhz bus and slower ram access.

Here its running with 75Mhz bus with fastest access to ram. This makes a massive difference as to how OS4.x perform.

It not the bus speed that giving me performance even thou it plays a part its "ram access". L2 cache will have very little impact here. The difference will be so small it makes it not worth the effort.

[delshay]

It is a pity that there is no version of WarpOS, because under the OS4.1 already Wipeout 2097 running slower.

Under extreme testing this game runs at full speed as does Freespace 1024x768 screemode (PCI bus speed 38.5Mhz) preliminary.

[delshay]

I wouldn't underestimate the improvements a functioning L2 cache would make. Memory speeds haven't increased as sharply in real terms as CPU speeds. My now 7-year old PC has then state-of-the-art DDR3 memory running right up to it's cycle timing limits (which are still better than a lot of RAM on sale today). The CPU still has 12MiB of L2 cache. Assuming memtest86 is telling the truth, the performance gap is still as big as it was back when the 603e was still in widespread use.

And I thought Red Bull F1 2014 packaging was tight,but this is just one insane threaded. See page two & three for a laugh.

Can your state-of-art DDR3 do those timing in link below? Do not take this seriously its a joke.

 http://www.xtremesystems.org/forums/showthread.php?113551-Ddr2-1-1-1-1-by-kyosen&

[delshay]

There are different opinions on which is the most important timing parameters.

Ignore one posting on page 2 & 3

 http://www.xtremesystems.org/forums/showthread.php?113551-Ddr2-1-1-1-1-by-kyosen&

[delshay]

It will interesting to know how 366Mhz+ Cyberstorm perform. These high performance cards already have very good memory access & video card(s),but looking at other threads some users say performance is not there.

I did a test some time ago with OS4.x with Freespace & Wipeout with 1024x768 screenmode with Permedia 2 both games ran ultra smooth but this is the extreme (overclocked). The video bus was clocked @38.5Mhz.

The Video bus is without doubt the problem,this is what was detected here. I feel very confident to say this game will work in at least 640x480 with Permedia 2,but the video bus speed modification is not available and "new" speed is still being worked on.

I have said this before in other threads,when the video bus is clocked anywhere near 38.5Mhz+ this is where visually there is a dramatic change.