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8.0

Prelims in Assembly programming?

Asked by Johncy in Assembly Programming Language

Tags: assembly, jump

This is the starting of my assembly Program

      .486P

      INCLUDE MACROS.INC
      INCLUDE TIME.INC
      INCLUDE PORT80.inc

_VECTOR SEGMENT PUBLIC use16 'CODE'

      ASSUME CS:SEGGROUP

      EXTERN      startTest:NEAR

      org 0005bh            ;jump to post entry point

      PORT80      POST_INTR_SEG_JUMP      ;post_f0h
      db      0eah
      public      resetVectorOffset
resetVectorOffset::
      dw      OFFSET startTest
      dw      0F000h

;
; Jump to F000:0000 and begin executing code there. This address is where
; all of the normal test code for this xpress.rom is located.
;
      org      01FF0h
      db      0eah
      dw      0E05bh
      dw      0F000h                  ; Jump to F000:E05b

;
; Nothing below this point ever executes
;

      DB      BUILDDATE            ; Date of build
      DB      000h                  ; Unused byte
      DB      0FCh                  ; Mark AT Computer ID
      DB      000h                  ; Unused byte

_VECTOR ENDS

END

My CS is f000h.
Please tell me if my assumptions are right?
org command says that the program will start at f000:005b. - ?
PORT80      POST_INTR_SEG_JUMP - PORT80 is a macro.
After this is db 0eah. What does it represent?

resetVectorOffset::
      dw      OFFSET startTest
      dw      0F000h
What does it say?

;
; Jump to F000:0000 and begin executing code there. This address is where
; all of the normal test code for this xpress.rom is located.
;
      org      01FF0h
      db      0eah
      dw      0E05bh
      dw      0F000h            ; Jump to F000:E05b

Here what does
org      01FF0h
db      0eah
say? No jump statement is present. How would it jump?

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	Title
1	Windows Standart Mouse Drivers
2	Rebooting from an application

Prelims in Assembly programming?

Asked by Johncy in Assembly Programming Language

Tags: assembly, jump

About this solution