Int 2F Fn 2780  U - Novell Dos 7 - Emm386.exe - Multitasking Api - Memory  [m]

   AX = 2780h
   CL = 03h (module: Memory)
   CH = subfunction
       00h ???
       01h "F_PdirGet" ???
       02h "F_PdirSet" ???
       03h "Z_PageAlloc" allocate a given page of memory
       04h "F_PageAllocG" allocate global page???
       05h "F_PageAllocI" allocate instance page???
       06h "F_PtblRead" get page table???
       07h "F_PtrlWrite" select page table???
       08h "Z_PtblGet" read page table
       09h "Z_PtblSet" change page table
       0Ah "Z_PagesAlloc" allocate pages of memory
       0Bh "Z_PageFree" free a given page of memory
       0Ch "Z_MemAlloc" allocate a memory block
       0Dh "Z_MemFree" release memory block
       0Eh "Z_MemSizeGet" get size of memory block
       0Fh "Z_MemResize" resize a memory block
       10h "Z_DescAlloc" allocate a memory descriptor
       11h "Z_DescFree" release a memory descriptor
       12h "Z_DescGet" get details on memory descriptor
       13h "Z_DescSet" set a memory descriptor
       14h "Z_MemDescAlloc" allocate a memory block and its descriptor
       15h "Z_MemDescFree" release a memory block and its descriptor
       16h "Z_MemDescSizeGet" get size of memory block
       17h "Z_MemDescResize" resize a memory block
       18h "Z_PageLock" lock a page, with existing contents
       19h "Z_PageUnlock" unlock a page
       1Ah "Z_PageLockAny" lock a page, contents undefined
       1Bh "Z_PageUnlockReuse" unlock page, reuse phsyical memory
       1Ch "Z_PageLockNone" lock a page, no physical memory assigned
       1Dh "Z_PageUnlockNone" unlock a page, don't reuse physical memory
       1Eh "F_CallRealRaw" call real mode (SS:ESP supplied)
       1Fh "F_IntRealRaw" perform real-mode interrupt (SS:ESP supplied)
       20h "F_CallReal" call real mode with RETF frame
       21h "F_IntReal" perform real-mode interrupt
       22h "F_PagedCallReal" paged real-mode call
       23h "F_PagedIntReal" paged real-mode interrupt
       24h "F_CallIretReal" call real mode with IRET frame
       25h "F_CallIretRealRaw" call real mode with IRET (SS:ESP supplied)
       26h "F_CallProt16" call 16-bit protected-mode code
       27h "F_CallProt32" call 32-bit protected-mode code
       28h "F_IAddPage" add kernel instance data
       29h "Z_PageDomLock" lock page in specific domain, preserve contents
       2Ah "Z_PatgeDomUnlock" unlock page in specific domain
       2Bh "Z_PageDomLockAny" lock page in specific domain, undef contents
       2Ch "Z_PageDomUnlockReuse" unlock page in spec. domain,reuse ph.mem
       2Dh "Z_PageDomLockNone" lock page in spec. domain, no phys memory
       2Eh "Z_PageDomUnlockNone" unlock page in spec. domain, no phys. mem
       2Fh "Z_GateAlloc" allocate a gate
       30h "Z_GateFree" release a gate
       31h "X_MemFreeGet" get total free memory
       32h "X_MemTopGet" get highest memory address
       33h "X_MemTotalGet" get total memory size
       34h "F_DescRead" ???
       35h "F_DescWrite" ???
       36h "F_GetStack" ???
       37h "F_SetStack" ???

Return: CX = status (most subfunctions)
   (E)AX and/or (E)BX contain return values, depending on function

Notes: called by DPMS.EXE and EMM386.EXE
   this API is only available if AX=12FFh/BX=0EDCh returns successfully;
     because the request is handled on the initial trap to the memory
     manager caused by INT instructions, this API must be invoked with
     an actual INT 2F instruction instead of some simulation such as a
     far call to the address in the interrupt vector table

See Also: AX=12FFh/BX=0EDCh,AX=2780h/CL=01h,AX=2780h/CL=02h,AX=2780h/CL=04h