INT 2F - Quarterdeck RPCI - QEMM/QRAM v5.0+ - GET HIRAM MEMORY CHAIN
AX = D201h
BX = 4849h ("HI")
CX = 5241h ("RA")
DX = 4D30h ("M0")
Return: BX = 4F4Bh ("OK")
CX = segment of start of HIRAM chain
DX = reserved block owner (QEMM/QRAM code segment)
Range: AH=C0h to AH=FFh, selected by scanning AH=D2h-FFh, then AH=C0h-D1h
Note: the HIRAM memory chain has the same format as the regular DOS 4.0
memory chain (see #01628 at INT 21/AH=52h), except that XMSsee Extended Memory Specification Upper
Memory Blocks have the block header program name field set to
"UMBsee Upper Memory Block"; blocks whose "owner" field is set to the reserved segment
returned in DX are locked-out regions such as video memory and ROMs.
SeeAlso: AX=12FFh/BX=0006h,AX=D200h