)
Call the XMS v3.0 driver "Get extended EMB handle information" function with:
AH = 8Eh
DX = handle
Return: AX = status
0001h success
BH = block's lock count
CX = number of free handles left
EDX = block size in KB
0000h failure
BL = status (80h,81h,A2h) (see #02775)
BUG: MS-DOS 6.0 HIMEM.SYS leaves CX unchanged
SeeAlso: #02764,#02772,#02774