Intel MB820 - Manual (Page 30)

INSTALLATIONS
26 MB820 User’s Manual
; Name : Read_Reg
; IN : CL - register index
; OUT : AL - Value to read
;[]================================================
===
Read_Reg
Proc Near
mov al, cl
mov dx, 2Eh
out dx, al
inc dx
in al, dx
ret
Read_Reg Endp
;[]================================================