[Freedos-user] command.com (Freecom) main environment location

2013-07-04 Thread Bertho Grandpied
Hi List ! I've seemed to notice Command.com locates its master environment block at the top of conventional memory, just under the video (and under a BIOS defined extended bios data aka EBDA, if any). Is this behaviour user-controllable with some switch while loading FreeCOM ? Or otherwise,

Re: [Freedos-user] command.com (Freecom) main environment location

2013-07-04 Thread Chris Evans
That's funny, because I thought that the master environment was controlled by the kernel.sys? Maybe they can add a switch that forces the environment be loaded in upper ram instead of conventional? -Chris Http://digitalatoll.com/ Http://tawhakisoft.com/nxdos.html On Thursday, July 4, 2013,

Re: [Freedos-user] command.com (Freecom) main environment location

2013-07-04 Thread Tom Ehlert
That's funny, because I thought that the master environment was controlled by the kernel.sys?  obviously not as it's size is controlled by '/E:512' Maybe they can add a switch that forces the environment be loaded in upper ram instead of conventional?  'they' could do nearly everything at

Re: [Freedos-user] command.com (Freecom) main environment location

2013-07-04 Thread Tom Ehlert
Hi Bertho, I've seemed to notice Command.com locates its master environment block at the top of conventional memory, just under the video (and under a BIOS defined extended bios data aka EBDA, if any). Is this behaviour user-controllable with some switch while loading FreeCOM ? what would

Re: [Freedos-user] command.com (Freecom) main environment location

2013-07-04 Thread Bertho Grandpied
On Thu, 4 Jul 2013 21:08:12 +0200 Tom Ehlert t...@drivesnapshot.de wrote : I've seemed to notice Command.com locates its master environment block at the top of conventional memory Is this behaviour user-controllable with some switch while loading FreeCOM ? what would be the purpose to

Re: [Freedos-user] command.com (Freecom) main environment location

2013-07-04 Thread dmccunney
On Thu, Jul 4, 2013 at 4:17 PM, Bertho Grandpied y31415926...@yahoo.fr wrote: On Thu, 4 Jul 2013 21:08:12 +0200 Tom Ehlert t...@drivesnapshot.de wrote : where would you put it and why ? The why has been explained. In addition, under /some but not all/ BIOSes, it seems the presence of a DOS

Re: [Freedos-user] command.com (Freecom) main environment location

2013-07-04 Thread Chris Evans
So command.com controller the allocating of dos env ? I still always thought it was a kernel level thing , as the way I coded it in nxbio.sys That reminds me that I need to make a dosenv.asm -Chris Http://digitalatoll.com Http://tawhakisoft.com/nxdos.html On Thursday, July 4, 2013, Tom Ehlert

Re: [Freedos-user] command.com (Freecom) main environment location

2013-07-04 Thread dmccunney
On Thu, Jul 4, 2013 at 5:55 PM, Chris Evans aaxiomfin...@gmail.com wrote: So command.com controller the allocating of dos env ? I still always thought it was a kernel level thing , as the way I coded it in nxbio.sys I misspoke. It's more correct to say that placing it at the top of

Re: [Freedos-user] command.com (Freecom) main environment location

2013-07-04 Thread Chris Evans
I just wrote a dosenv.asm for nxbio I'll write it up to a int21 call so user app and resize dos environment at will. On Thursday, July 4, 2013, dmccunney wrote: On Thu, Jul 4, 2013 at 5:55 PM, Chris Evans aaxiomfin...@gmail.comjavascript:; wrote: So command.com controller the allocating