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AX = 7A20h BX = 0001h
Return:
AX = 0000h if request was handled ES:BX -> CallA entry point (see #02893)
See Also: AX=7A20h/BX=0000h
(Table 02893) Call VLM CallA entry point with:. AX = function 0000h submit 0001h cancel (not implemented). ES:DI -> Overlay Asynchronous Control Block structure (see #02894)
Return:
DI, DS, ES preserved; all other registers may be destroyed interrupts disabled
Desc: Asychronously call the specified VLM and then return to caller, which might be another VLM
Format of Overlay Asynchronous Control Block (OACB): Offset Size Description (Table 02894) 00h DWORD link to next OACB, 0000h:0000h if last (filled by VLM.EXE) 04h DWORD callback address or 0000h:0000h 08h BYTE InUse flag (00h if complete) (set by VLM.EXE) 09h BYTE flag, reserved for VLM use 0Ah WORD destination VLM 0Ch WORD destination function 0Eh WORD temporary storage for VLM.EXE 10h 6 BYTEs reserved 16h 6 DWORDs EAX,EBX,ECX,EDX,ESI,EDI 2Eh 4 WORDs DS,ES,FS,GS (FS and GS not used)
Category: Netware - Int 2Fh - N
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