WinUAE RAM configuration issues

Minuous · 27 February 2014, 02:25

No matter how I configure the RAM options, I can't get it to have more than 8Mb chip + 128Mb fast RAM (as reported by eg. "Avail" command) on WinUAE 2.6.0. The host has 1Gb RAM.

Toni Wilen · 07 March 2014, 20:06

Use newer version or buy a better PC

Minuous · 09 March 2014, 15:43

With WinUAE 2.7.0 I got 8Mb chip + 384Mb fast, which is an improvement, I couldn't see anything in the changelog to explain why that would be though. Shouldn't 1Gb be plenty for emulating a 512Mb system? Does it need to be contiguous? Shouldn't it give an error/warning message and/or use virtual memory to fulfil the request if there is insufficient free contiguous RAM?

Toni Wilen · 11 March 2014, 08:34

For 512M of Fast you need 768M of real memory (Z3 Fast lowest possible start address is 0x10000000) and it needs to be contiguous chunk for JIT compatibility.

You can get more RAM by also enabling mainboard RAM options because they are located inside of first 256M block.

It is practically impossible to get more than about ~1G of contiguous memory under 32-bit Windows, even if you have 4G of RAM. 32-bit exe under 64-bit Windows allows at least twice the amount of memory. (=Buy a better PC still works)

There won't be any warnings or errors because they are only annoying. (You move your config file to another PC or get config from your friend and you get 5+ confusing dialogs. I am sure you don't want that and you would complain that it is the most stupid feature ever!)

Check the error log button for warnings and errors.

27 February 2014, 02:25	#1
Minuous Coder/webmaster/gamer Join Date: Oct 2001 Location: Canberra/Australia Posts: 2,631	WinUAE RAM configuration issues No matter how I configure the RAM options, I can't get it to have more than 8Mb chip + 128Mb fast RAM (as reported by eg. "Avail" command) on WinUAE 2.6.0. The host has 1Gb RAM.

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07 March 2014, 20:06	#2
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,505	Use newer version or buy a better PC

09 March 2014, 15:43	#3
Minuous Coder/webmaster/gamer Join Date: Oct 2001 Location: Canberra/Australia Posts: 2,631	With WinUAE 2.7.0 I got 8Mb chip + 384Mb fast, which is an improvement, I couldn't see anything in the changelog to explain why that would be though. Shouldn't 1Gb be plenty for emulating a 512Mb system? Does it need to be contiguous? Shouldn't it give an error/warning message and/or use virtual memory to fulfil the request if there is insufficient free contiguous RAM?

11 March 2014, 08:34	#4
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,505	For 512M of Fast you need 768M of real memory (Z3 Fast lowest possible start address is 0x10000000) and it needs to be contiguous chunk for JIT compatibility. You can get more RAM by also enabling mainboard RAM options because they are located inside of first 256M block. It is practically impossible to get more than about ~1G of contiguous memory under 32-bit Windows, even if you have 4G of RAM. 32-bit exe under 64-bit Windows allows at least twice the amount of memory. (=Buy a better PC still works) There won't be any warnings or errors because they are only annoying. (You move your config file to another PC or get config from your friend and you get 5+ confusing dialogs. I am sure you don't want that and you would complain that it is the most stupid feature ever!) Check the error log button for warnings and errors.

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