Set Segment Base Address

Call With

AX = 0007H
BX = selector
CX:DX = 32-bit linear base address of segment

Returns

if function successful
Carry flag = clear

if function unsuccessful
Carry flag = set
AX = error code

8022H	invalid selector
8025H	invalid linear address (changing the base would cause the descriptor to reference a linear address range outside that allowed for DPMI clients)

Notes

• A DPMI 1.0 host will automatically reload any segment register which contains the selector specified in register BX. It is suggested that DPMI 0.9 hosts also implement this.

• Refer to the rules for descriptor usage in Appendix D.