Hi

I am using fasm17117.

'fasm.exe pong.asm' (which I found on this forum) assembles fine in dosbox but when I try to

use it in dosemu the window closes with no output.

fasmd.exe pong.asm runs in dosemu and disassembles ok

I have tried 'a86' in dosemu and that works fine.

Any idea's

percy

fasmd always uses DPMI, while regular fasm tries to use the 32-bit real mode and switches to DPMI when that fails. Probably dosemu has a problem with emulating this mode and crashes when fasm checks whether it works?

Tomasz

Thanks for that I will have to look to see If I can setup DPMI in dosemu.conf

You probably already have DPMI support, since you are able to run fasmd (which can run only with DPMI). But the problem is that fasm first checks whether the processor supports the 32-bit real mode, and only when this fails, it uses DPMI instead. Since the emulator probably crashes on that check, the only way to get around it would be to make fasm skip this check entirely - for example by running it in V86 mode (when processor is not in real mode, fasm goes straight to DPMI variant). You can usually force DOS to run in V86 mode by installing some EMS driver.

I am running dosemu in a linux gentoo 64bit system.



So it appears that vm86 needs to be enabled in the kernel. After further research and According to 'http://forums.gentoo.org/viewtopic-t-705463-view-previous.html?sid=b0dc20f9f1b52235c46ef46bce449c24'

it is only available in a 32bit or 16 bit system

So it looks as though I cannot get fasm to run in a 64bit system.

Unless anyone knows differently that is!

percy

There are also 32-bit versions for Win32 (in WINE?) and Linux32. I would be surprised if neither of those an be run in 64-bit Linux.