Microsoft KB Archive/39235

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Article ID: 39235

Article Last Modified on 10/22/2003



APPLIES TO

  • Microsoft Macro Assembler 5.0
  • Microsoft Macro Assembler 5.1 Standard Edition
  • Microsoft Macro Assembler 5.1a
  • Microsoft Macro Assembler 6.0 Standard Edition
  • Microsoft Macro Assembler 6.0a
  • Microsoft Macro Assembler 6.0b



This article was previously published under Q39235

SUMMARY

In order to declare a communal variable of a record type, declare the variable whose size matches the size of the record type. There is no need to specify that the variable is of the record type.

MORE INFORMATION

The following sample program demonstrates this information:

Sample Code

;Assemble options needed: none


; module 1

        .model small
        DOSSEG

EXTRN   proc2:proc
        .stack 100h

        .data
color   RECORD   blink:1, back:3, intense:1, fore:3
        COMM     near pixel:byte     ; use "byte" because
                                     ; color has size byte.
        .code
start:  MOV ax, @data
        MOV ds, ax

        MOV pixel, color <1,2,1,3> ; now the variable pixel
                                   ; should contain abh (1 010 1 011)
        CALL proc2
        MOV ax, 4c00h
        INT 21h

        END start

******************************
; module 2

        .model small
        DOSSEG

        .stack 100h

        .data
color   RECORD   blink:1, back:3, intense:1, fore:3
        COMM     near pixel:byte

        .code
PUBLIC  proc2

proc2   PROC
        MOV ah, 0
        MOV ah, pixel  ; ah should contain abh (1 010 1 011)
        RET
proc2   ENDP

        END
                


Additional query words: 5.00 5.10 5.10a 6.00 6.00a 6.00b

Keywords: KB39235