DOS ain't dead

Clker 30.06.2009, 06:37	How to access memory beyond 4GB (DOSX) Post reply
	Hi friends, I want to access memory beyond 4GB(The real memory size is 36GB). I found the PAE patch here http://dos32a.narechk.net/content/beta.html but I don't know how to use it. Do you anyone know about it? Also I know memtest86+ can test the memory beyond 4GB. Do you anyone know how can it do? Thanks,

Zyzzle 30.06.2009, 23:24 (edited by Zyzzle, 01.07.2009, 07:59) @ Clker	How to access memory beyond 4GB Post reply
	Actually, I have the exact same question. I have seen the PAE code also, but I can't make use of it either. Does anyone have a precompiled binary of this code? And yes, I've used memtest86+ to test memory beyond 4 GB. I've used it fine and it saw all 16 GB of my memory perfectly. I do not know its real limit (maybe 2048 GB of RAM?)

Rugxulo

Usono,
01.07.2009, 22:24

@ Zyzzle

How to access memory beyond 4GB

Post reply

> Actually, I have the exact same question. I have seen the PAE code also,
> but I can't make use of it either. Does anyone have a precompiled binary
> of this code?

DOS/32A uses TASM, which you can get free from Turbo C++ Explorer 2006 (although big download). Or ask Narech K. himself for a binary via e-mail.

> And yes, I've used memtest86+ to test memory beyond 4 GB. I've used it
> fine and it saw all 16 GB of my memory perfectly. I do not know its real
> limit (maybe 2048 GB of RAM?)

I think PAE is limited to 64 GB.

Khusraw

Bucharest, Romania,
02.07.2009, 20:34
(edited by Khusraw, 02.07.2009, 20:57)

@ Clker

How to access memory beyond 4GB

Post reply

> I want to access memory beyond 4GB(The real memory size is 36GB). I found
> the PAE patch here http://dos32a.narechk.net/content/beta.html but I don't
> know how to use it.

Copy the patch files over the dos32a 9.12 sources from the src\dos32a\ folder. You will need TASM 4.0+ to assemble kernel.asm and dos32a.asm. Then you will need Watcom linker in order to link the two object files. Good luck!

---
Glory to God for all things

Khusraw

Bucharest, Romania,
05.07.2009, 15:17

@ Khusraw

How to access memory beyond 4GB

Post reply

> Then you will need Watcom linker in order to link the two object files.

Actually you could use any OMF linker with 32-bit and MZ format output support.

---
Glory to God for all things

Rugxulo

Usono,
05.07.2009, 21:16

@ Khusraw

How to access memory beyond 4GB

Post reply

> > Then you will need Watcom linker in order to link the two object files.
>
> Actually you could use any OMF linker with 32-bit and MZ format output
> support.

WarpLink? Valx? Alink? Tlink? Qlink?

Anyways, I actually tried building with TASM32 5.3, and annoyingly enough it bombs out with a bunch of errors. So much for compatibility. (Maybe there's a switch, but I dunno what.)

---
Know your limits.h

Khusraw

Bucharest, Romania,
05.07.2009, 22:32
(edited by Khusraw, 05.07.2009, 22:45)

@ Rugxulo

How to access memory beyond 4GB

Post reply

> Anyways, I actually tried building with TASM32 5.3, and annoyingly enough
> it bombs out with a bunch of errors. So much for compatibility. (Maybe
> there's a switch, but I dunno what.)

Use it with "-ml -m3" switches, and don't forget to define EXEC_TYPE (-dEXEC_TYPE=?).

EDIT: Peronally I used to build it the followings:
tasm -ml -m2 -dEXEC_TYPE=2 kernel
tasm -ml -m3 -dEXEC_TYPE=2 dos32a
tlink /3 dos32a kernel, dos32a
You can use instead Tlink any other linker supporting OMFs with 32-bit fixups and MZ output.

---
Glory to God for all things

Rugxulo Usono, 08.07.2009, 07:37 @ Khusraw	How to access memory beyond 4GB Post reply
	Okay, I built it, but I don't have > 1 GB of RAM (even), so I can't really test. Here's binary and sources: 1. Download Link: Click here to download file http://rapidshare.com/files/253281239/dos32a.zip.html MD5: 4B8CE29C127CEF1352FB9DC23BD9A0DC

How to access memory beyond 4GB (DOSX)

How to access memory beyond 4GB

How to access memory beyond 4GB

How to access memory beyond 4GB

How to access memory beyond 4GB

How to access memory beyond 4GB

How to access memory beyond 4GB

How to access memory beyond 4GB