: Ralf Brown memory.lst states: : --------V-MA0000000-------------------------- : MEM A000h:0000h - EGA+ GRAPHICS BUFFER : Size: 65536 BYTEs : : So it was always there.
Well, at least since the EGA. I suppose if DOSEMU emulated an MDA or a CGA, then it would make sense to use the memory up to B000:0 or B800:0 respectively. On an original XT, it was even possible to do this in hardware: <ftp://ftp.simtel.net/pub/simtelnet/msdos/info/896k-mem.txt> : QEMM have a program called "vidram", which allows to use that region as a : base memory by the cost of not being able to diplay graphics, but vidram : will not work under dosemu because qemm itself doesn't work under dosemu. The same thing is true of DRDOS (the equivalent program is called MEMMAX). --------m-2F12FFBX0006----------------------- INT 2F U - DR DOS 6+, Novell DOS 7+ - EMM386.EXE - VIDEO MEMORY SPACE CONTROL AX = 12FFh BX = 0006h DX = 0000h CX = function 0000h get status of video memory space (MEMMAX /V) 0001h map memory into video memory space (MEMMAX +V) 0002h unmap memory from video memory space (MEMMAX -V) : Increasing the base memory above 640Kb is definitely the bad idea, as it : is used very rarely even in a pure DOS and will cost you the inability to : display graphics. Except in the CGA modes :-) -- John Elliott - To unsubscribe from this list: send the line "unsubscribe linux-msdos" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
