In SX Microcontrollers, SX/B Compiler and SX-Key Tool, baba40 wrote:

I have copied Al Williams new SX/B LCD driver code, an update of his previous SX assembler implementation, from the new version 3 of [i]Exploring the SX Microcontroller wiht Assembly and Basic Programming.  [/i]When I assembly it, I get an "error 44, Pass 2: Address 266 is not within lower half of memory page."  the source code of the subroutine where this is happening is:

  gosub setcursor,40 'move to line 2
  goto ploop


The assembled code is: 

 

MOV __PARAM1,#40               ;  gosub setcursor, 40 'move to line 2
MOV __PARAMCNT,#1             
CALL @setcursor               

JMP @ploop                     ;  goto ploop

 

The error references: CALL @setcursor

 

I suspect this is some sort of dreaded page jump problem from the assembler syntax used on this line, but since I did not create the code, I'm not sure, nor am I sure how to correct this problem since I suspect it probably didn't happen when the code was tested prior to publication.  Has anyone stumbled across this before and discovered the problem.  I am beginning to believe my worst fears of intermingling basic and assembler using a non-optimizing compiler/assembler maybe coming true.

 

Nimbus

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