Intel 8XC196MC User Manual
4-17
MEMORY PARTITIONS
4.2.2.5
Using the Linker Locator to Set Up a Window
In this example, the linker locator is used to set up a window. The linker locator locates the win-
dow in the upper register file and determines the value to load in the WSR for access to that win-
dow. (Please consult the manual provided with the linker locator for details.)
dow in the upper register file and determines the value to load in the WSR for access to that win-
dow. (Please consult the manual provided with the linker locator for details.)
********* mod1 **************
mod1 module main ;Main module for linker
public function1
extrn ?WSR ;Must declare ?WSR as external
mod1 module main ;Main module for linker
public function1
extrn ?WSR ;Must declare ?WSR as external
wsr equ 14h:byte
sp equ 18h:word
sp equ 18h:word
oseg
var1: dsw 1 ;Allocate variables in an
var2: dsw 1 ;overlayable segment
var3: dsw 1
var1: dsw 1 ;Allocate variables in an
var2: dsw 1 ;overlayable segment
var3: dsw 1
cseg
function1:
push wsr ;Prolog code for wsr
ldb wsr, #?WSR ;Prolog code for wsr
push wsr ;Prolog code for wsr
ldb wsr, #?WSR ;Prolog code for wsr
add var1, var2, var3 ;Use the variables as registers
;
;
;
;
;
;
ldb wsr, [sp] ;Epilog code for wsr
add sp, #2 ;Epilog code for wsr
ret
end
add sp, #2 ;Epilog code for wsr
ret
end
******** mod2 **************
public function2
extrn ?WSR
public function2
extrn ?WSR
wsr equ 14h:byte
sp equ 18h:word
sp equ 18h:word
oseg
var1: dsw 1
var2: dsw 1
var3: dsw 1
var1: dsw 1
var2: dsw 1
var3: dsw 1
cseg
function2:
push wsr ;Prolog code for wsr
push wsr ;Prolog code for wsr