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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:
Category:
Memory Management
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Int 2Fh
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