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AX = 2520h DS:EDX -> pointer to buffer at least 100 bytes in size (see #01364) BL = 0 (don't reset VM stats), 1 (reset VM stats)
Return:
Carry flag clearFormat of Phar Lap VM statistics buffer: Offset Size Description (Table 01364) 00h DWORD VM status 0001h VM subsystem is present 0000h VM not present 04h DWORD "nconvpg" number of conventional memory pages available 08h DWORD "nbimpg" number of Compaq built-in memory pages available 0Ch DWORD "nextpg" total number of extended memory pages 10h DWORD "extlim" extender memory pages limit 14h DWORD "aphyspg" number of physical memory pages allocated to appl 18h DWORD "alockpg" number of locked pages owned by application 1Ch DWORD "sysphyspg" number physical memory pages allocated to system 20h DWORD "nfreepg" number of free physical pages; approx if EMS VCPI 24h DWORD linear address of beginning of application address space 28h DWORD linear address of end of application address space 2Ch DWORD number of seconds since last time VM stats were reset 30h DWORD number of page faults since last time 34h DWORD number of pages written to swap file since last time 38h DWORD number of reclaimed pages (page faults on swapped pages) 3Ch DWORD number of virtual pages allocated to the application 40h DWORD size in pages of swap file 44h DWORD number of system pages allocated with EMS calls 48h DWORD minimum number of conventional memory pages 4Ch DWORD maximum size in pages to which swap file can be increased 50h DWORD "vmflags" bit 0 = 1 if page fault in progress ---v4.0+ --- 54h DWORD number of physical pages guaranteed to be free 58h DWORD number of free physical pages currently available 5Ch DWORD size in pages of largest free block of memory (including disk swap space) 60h DWORD reserved
Category: DOS Extenders - Int 21h - P
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