Int 2F Fn 4310  - Helix Netroom Rm386 V6.00 - Xms Extensions               [m]

   AX = 4310h

Return: ES:BX -> driver entry point (see #2470,#2471,#2472,#2473)

Notes: HIMEM.SYS v2.77 chains to previous handler if AH is not 00h or 10h
   HIMEM.SYS requires at least 256 bytes free stack space when calling
     the driver entry point

See Also: AX=4300h,AX=4310h"XMS",AX=4310h"Cloaking"

(Table 2470)
Call the Netroom RM386 v6.00 "Reallocate upper memory block" function with:
   AH = 80h
   DX = segment address of UMB to resize
   BX = new size of block in paragraphs

Return: AX = status
       0001h success
       0000h failure
       BL = error code (80h,B0h,B2h) (see #2462)
       DX = maximum available size

Note:  this function is identical to function 12h

See Also: #2455,#2471

(Table 2471)
Call the Netroom RM386 v6.00 "re-enable HMA allocation" function with:
   AH = 81h

Return: AX = 0001h (success)

See Also: #2438,#2470,#2472

(Table 2472)
Call the Netroom RM386 v6.00 "Create new UMB entry" function with:
   AH = 83h
   BX = segment of high-memory block
   DX = first page of start of block
   CX = number of consecutive pages in block
   DI = start of UMB in block

Return: AX = 0001h (success)
   DI = segment of first high-DOS block

Note:  the new UMB is not linked into the high-memory chain

See Also: #2453,#2471,#2473

(Table 2473)
Call the Netroom RM386 v6.00 "Get all XMS handles info" function with:
   AH = 84h
   CX = size of buffer for handle info
   ES:DI -> buffer for handle info (see #2464)

Return: AX = 0001h (success)
   DX = current number of allocated XMS handles

See Also: #2472,#2458