;**************************************************************
;***    EMS4F1.ASM                                          ***
;***                                                        ***
;***    function        EMS_Ems.restPartialMap40(           ***
;***                        buffer:         Pointer)        ***
;***                        : Boolean;                      ***
;***                                                        ***
;***    Restores the state of a subset of expanded mem page ***
;***    mapping from buffer                                 ***
;***                                                        ***
;***    Returns 0 if no error or an error code.             ***
;***                                                        ***
;***                                                        ***
;***    (Ems Version 4.0)                                   ***
;**************************************************************

        .model  large,pascal   

        include emsdefs.asm 

        extrn   errno:WORD  

;
;   Define entry point
;
        public  EMS_Ems@restPartialMap40

        .code

EMS_Ems@restPartialMap40 proc    buffer:Far Ptr Word, self:DWord

        push    ds                      ; Save registers
        push    si

        lds     si,buffer               ; DS:SI gets buffer address

        mov     ax,RestPartialMap40     ; Make EMS call
        int     Ems           

        or      ah,ah                   ; Set flags
        jnz     error

        xor     ax,ax                   ; return OK

        pop     si                      ; Restore regs
        pop     ds
        ret         

error:
        pop     si                      ; Restore regs
        pop     ds

        mov     al,ah                   ; AL gets error code
        xor     ah,ah                   ; Zero extend
        mov     errno,ax                ; Save in errno too

        ret

EMS_Ems@restPartialMap40 endp           ; End of procedure

        end                             ; End of source file