PPC memory limits

xboxown · 18 February 2015, 22:27

Quote:

Originally Posted by Toni Wilen

Missed check, it always complains, even if 24-bit addressing is already disabled..

Thank you so much for implementing PPC into WinUAE I finally get to have a taste of AmigaOS 4.1 without going bankrupt.

However, is it possible please can you implement more than 128 MB RAM for PPC emulation so that AmigaOS 4.1 is more usable. I cannot even browse the net with just 128 MB? Like can we at least have 512 MB RAM for PPC is that something possible?

Thanks in advance.

Snake79 · 18 February 2015, 22:42

I think the limitation (RAM) are the same, like on the real hardware (128MB on Cyberstorm A4000 and 256MB on Blizzard A1200 config) and nothing can be magically changed...
BTW. it's not beta series related post really and may be moved to separate...

xboxown · 18 February 2015, 22:59

Quote:

Originally Posted by Snake79

I think the limitation (RAM) are the same, like on the real hardware (128MB on Cyberstorm A4000 and 256MB on Blizzard A1200 config) and nothing can be magically changed...
BTW. it's not beta series related post really and may be moved to separate...

I know that. That is why I am asking if he can put an option to break that limit since this is an emulator and not the real thing and it can be done on an emulator, thus allowing AmigaOS 4.1 to be usable verses just an OS for IRC client only.

Snake79 · 18 February 2015, 23:53

As far i know, Toni was never interested in emulation of non existing hardware / config... Next, i suppose that OS4.1 for Classics isn't created to do that (os limitation), but i might be wrong...
PS. don't know if Classic Amigas can do more, but there are HW specs for AOS4.1 Classics: http://www.amigaos.net/hardware/40/c...quipped-models,
as i know, AOne500 and X1000 has 2GB RAM onboard, but they are not Classics...
For now you can try to add 128MB or 256MB on Z3 Fast as SWAP (mapping mode: Real) and try if it's working / changes anything...

xboxown · 19 February 2015, 00:01

Quote:

Originally Posted by Snake79

As far i know, Toni was never interested in emulation of non existing hardware / config... Next, i suppose that OS4.1 for Classics isn't created to do that (os limitation), but i might be wrong...

Not true. OS 4.1 classic can see more than 4 GB of RAM.

I mean if it is as easy as changing a value of 128 to 512 in an integer variable for example it would be super sweet if he can do that in next release.

Otherwise AmigaOS 4.1 classic is not useful for anything other than use WookieChat or notepad.

Toni Wilen · 19 February 2015, 08:39

Wrong thread (moved from beta thread) and it has already been discussed and answered in other threads.

There is nothing that emulator can do (except directly patch the OS but I don't touch PPC code).

OS4 _PHYSICAL_ RAM limit is 128M (CSPPC) and 256M (BPPC). The end.

vulture · 19 February 2015, 09:10

What Toni said are the limits for classic systems, plus the limit is 2gb of RAM on NG machines. There's no 4gb RAM support (yet). Allocating some swap space will let you do some web surfing though. You can , for example , setup a CSPPC config and create a 384MB swap partition. That'll effectively give you 512MB of total RAM (real+virtual) which is a bit slower than true RAM, but it's not a crawler either. That's enough for most jobs.

fitzsteve · 19 February 2015, 09:22

Indeed Swap under CSPPC SCSI is the way to go if you need some paging memory

Locutus · 19 February 2015, 09:38

Didn't Zorro3 memory work as Swap?

vulture · 19 February 2015, 10:07

@Locutus

indeed, but afaik, it's limited to 256mb which is less to what the partition can be. I don't know if they can be combined though.

fitzsteve · 19 February 2015, 11:08

In the real world at least I think CSPPC SCSI is faster then ZorRam for Swap on OS4.1? Emulation is a different kettle of fish though...

wawa · 19 February 2015, 13:41

The solution is to use aros68k (or aros vision for that matter) instead of os4. There is no this kind of limitation to screen size or memory or whatever. For web browsing use aros owb. Dunno if there is any software that may run on os4 "classic" that would justify to bother with os4, sorry for those caught with false expectations.

Toni Wilen · 19 February 2015, 14:02

Perhaps but this topic is about OS4 only. (EDIT: and is PPC-only too)

xboxown · 19 February 2015, 18:54

Quote:

Originally Posted by vulture

What Toni said are the limits for classic systems, plus the limit is 2gb of RAM on NG machines. There's no 4gb RAM support (yet). Allocating some swap space will let you do some web surfing though. You can , for example , setup a CSPPC config and create a 384MB swap partition. That'll effectively give you 512MB of total RAM (real+virtual) which is a bit slower than true RAM, but it's not a crawler either. That's enough for most jobs.

How do you do that in AmigaOS 4.1? I already installed it.

vulture · 19 February 2015, 22:48

It's fairly automatic, you just cut a partition and set it as SWAP in the filesystem selection and that's pretty much it. At next (cold - I think) reboot the OS recognizes it and uses it when the amount of physical RAM has been spent.

Cylon · 20 February 2015, 23:32

Can one use a "RAMDisk" on the PC-side, mount it as an UAE partition and use it therefore as a SWAP drive? Wouldn't that be faster?

18 February 2015, 22:42	#2
Snake79 Registered User Join Date: Feb 2014 Location: Poland Posts: 190	I think the limitation (RAM) are the same, like on the real hardware (128MB on Cyberstorm A4000 and 256MB on Blizzard A1200 config) and nothing can be magically changed... BTW. it's not beta series related post really and may be moved to separate... Last edited by Snake79; 18 February 2015 at 22:49.

18 February 2015, 23:53	#4
Snake79 Registered User Join Date: Feb 2014 Location: Poland Posts: 190	As far i know, Toni was never interested in emulation of non existing hardware / config... Next, i suppose that OS4.1 for Classics isn't created to do that (os limitation), but i might be wrong... PS. don't know if Classic Amigas can do more, but there are HW specs for AOS4.1 Classics: http://www.amigaos.net/hardware/40/c...quipped-models, as i know, AOne500 and X1000 has 2GB RAM onboard, but they are not Classics... For now you can try to add 128MB or 256MB on Z3 Fast as SWAP (mapping mode: Real) and try if it's working / changes anything... Last edited by Snake79; 19 February 2015 at 00:41.

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19 February 2015, 08:39	#6
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,505	Wrong thread (moved from beta thread) and it has already been discussed and answered in other threads. There is nothing that emulator can do (except directly patch the OS but I don't touch PPC code). OS4 _PHYSICAL_ RAM limit is 128M (CSPPC) and 256M (BPPC). The end.

19 February 2015, 09:10	#7
vulture Registered User Join Date: Oct 2007 Location: Athens , Greece Posts: 1,840	What Toni said are the limits for classic systems, plus the limit is 2gb of RAM on NG machines. There's no 4gb RAM support (yet). Allocating some swap space will let you do some web surfing though. You can , for example , setup a CSPPC config and create a 384MB swap partition. That'll effectively give you 512MB of total RAM (real+virtual) which is a bit slower than true RAM, but it's not a crawler either. That's enough for most jobs.

19 February 2015, 09:22	#8
fitzsteve Professional slacker! Join Date: Jul 2009 Location: Kent, UK Age: 44 Posts: 6,683	Indeed Swap under CSPPC SCSI is the way to go if you need some paging memory

19 February 2015, 09:38	#9
Locutus Registered User Join Date: Jul 2014 Location: Finland Posts: 1,176	Didn't Zorro3 memory work as Swap?

19 February 2015, 10:07	#10
vulture Registered User Join Date: Oct 2007 Location: Athens , Greece Posts: 1,840	@Locutus indeed, but afaik, it's limited to 256mb which is less to what the partition can be. I don't know if they can be combined though.

19 February 2015, 11:08	#11
fitzsteve Professional slacker! Join Date: Jul 2009 Location: Kent, UK Age: 44 Posts: 6,683	In the real world at least I think CSPPC SCSI is faster then ZorRam for Swap on OS4.1? Emulation is a different kettle of fish though...

19 February 2015, 13:41	#12
wawa Registered User Join Date: Aug 2007 Location: berlin/germany Posts: 1,054	The solution is to use aros68k (or aros vision for that matter) instead of os4. There is no this kind of limitation to screen size or memory or whatever. For web browsing use aros owb. Dunno if there is any software that may run on os4 "classic" that would justify to bother with os4, sorry for those caught with false expectations.

19 February 2015, 14:02	#13
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,505	Perhaps but this topic is about OS4 only. (EDIT: and is PPC-only too)

19 February 2015, 22:48	#15
vulture Registered User Join Date: Oct 2007 Location: Athens , Greece Posts: 1,840	It's fairly automatic, you just cut a partition and set it as SWAP in the filesystem selection and that's pretty much it. At next (cold - I think) reboot the OS recognizes it and uses it when the amount of physical RAM has been spent.

20 February 2015, 23:32	#16
Cylon Registered User Join Date: Oct 2014 Location: Europe Posts: 470	Can one use a "RAMDisk" on the PC-side, mount it as an UAE partition and use it therefore as a SWAP drive? Wouldn't that be faster?

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