leno@NUSC-NPT.NAVY.MIL ("LENO S.J.") (05/27/89)
Hi, I am working on a small machine language programand I want to allocate a chunk of memory for scratch work. I will need a 64k block. I have 768k so this should be no problem at all. I'm using Int 21h, function 48h. I am asking for 01000h 16 byte paragraphs. I'm told, by DOS, that the most it can give me is 3 paragraph or 48 bytes. Something sounds fishy. Any ideas would be welcome. BTW, I am using MS-DOS 2.21 for the Z100. I do get the same problem when I run this part of the code on an IBM. If anyone wants to hazard a guess I can send a code fragment. Thanx, Scott
ahd@CLUTX.CLARKSON.EDU (Drew Derbyshire) (05/27/89)
Scott, If you wrote a com file, you alreafy own all of memory. Address of last address you can address wil be in the PSP, I can look it up if you need it. Drew