IBM 770 User Manual

   

 

 

;

 

;

FindSmapi

 

; -----------

 

;
;

On Entry : None

;

On Exit

: CF = ð .. Find out

;

DX - Segment

;

BX - Pointer to header

 

;
;

CF = 1 .. No Smapi BIOS

 

;

 

FindSmapi

Proc

Near

 

push

eax

 

push

cx

 

push

si

 

push

ds

mov

ax, BIOS_SEG

; Fððð Segment

 

mov

ds, ax

mov

bx, ð

; Start point

mov

cx, SMB_CAND_CNT

; Total check count

mov

eax, 'BMS$'

; Target strings

 

@@:

cmp

eax, dword ptr ds:[bx].@SMBHDR_SIG

 

je

short @f

add

bx, 1ðh

; Next paragraph

 

loop

@b

 

stc

 

jmp

short FindSmapiFin