• State Not Answered
  • Locked Locked
  • Replies 2 replies
  • Subscribers 22 subscribers
  • Views 870 views
  • Users 0 members are here
Options
Related
How was your experience today?
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Bit-addressable register

Jo Leeuwesteijn

Hi all,

When I do this:

P7_SFR         DEFR    0FFD0H
DP7_SFR        DEFR    0FFD2H

HWWDOG_PORT    EQU     P7_SFR
HWWDOG_DIRPORT EQU     DP7_SFR
HWWDOG_BIT     EQU     6

HWWDOG_PULSEBIT DEFB   HWWDOG_PORT.HWWDOG_BIT ; P7, bit 6

I get an error:
*** ERROR #69, LINE #898, NOT A BITADDRESSABLE BASE
on the last HWWDOG_PULSEBIT line.

I tried using SET instead of EQU (for defining HWWDOG_PORT) but no difference. When I replace HWWDOG_PORT with P7_SFR, it does work.

In C I could do a simple #define but why doesn't this work?

Regards,
Joost Leeuwesteijn

Parents
  • 0

    Works fine here:

    MACRO ASSEMBLER A166 V5.20
OBJECT MODULE PLACED IN x.OBJ
ASSEMBLER INVOKED BY: C:\Keil\C166\bin\A166.EXE x.a66

LOC      OBJ             LINE     SOURCE

 FFD0                       1     P7_SFR         DEFR    0FFD0H
 FFD2                       2     DP7_SFR        DEFR    0FFD2H
                            3
 FFD0                       4     HWWDOG_PORT    EQU     P7_SFR
 FFD2                       5     HWWDOG_DIRPORT EQU     DP7_SFR
 0006                       6     HWWDOG_BIT     EQU     6
                            7
 FFD0.6                     8     HWWDOG_PULSEBIT DEFB   HWWDOG_PORT.HWWDOG_BIT ; P7, bit 6
                            9
                           10      END

ASSEMBLY COMPLETE.  0 WARNING(S), 0 ERROR(S)

Reply
  • 0

    Works fine here:

    MACRO ASSEMBLER A166 V5.20
OBJECT MODULE PLACED IN x.OBJ
ASSEMBLER INVOKED BY: C:\Keil\C166\bin\A166.EXE x.a66

LOC      OBJ             LINE     SOURCE

 FFD0                       1     P7_SFR         DEFR    0FFD0H
 FFD2                       2     DP7_SFR        DEFR    0FFD2H
                            3
 FFD0                       4     HWWDOG_PORT    EQU     P7_SFR
 FFD2                       5     HWWDOG_DIRPORT EQU     DP7_SFR
 0006                       6     HWWDOG_BIT     EQU     6
                            7
 FFD0.6                     8     HWWDOG_PULSEBIT DEFB   HWWDOG_PORT.HWWDOG_BIT ; P7, bit 6
                            9
                           10      END

ASSEMBLY COMPLETE.  0 WARNING(S), 0 ERROR(S)

Children