?? boot.a51
字號:
PageReg equ 80e0h
VmReg equ 80e2h
cseg at 0ff00h
org 0ff00h
mov dptr,#PageReg
mov a,#0;
movx @dptr,a
mov dptr,#VmReg
movx a,@dptr
mov a,#04h ;Code can access main, Data can access Boot
movx @dptr,a ;jump to main application
ljmp 0000h
org 0ff80h
mov dptr ,#PageReg
mov a,#008h;
movx @dptr,a
mov dptr,#VmReg
movx a,@dptr
mov a,#12h ;Code can access Boot , Data can access Main
movx @dptr,a ;jump to boot application
ljmp 8000h
end
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