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

One big gotcha is the mode values. 
For the SX28 the registers are write-only (you cannot read them back). On the SX48 you can read them back.
BUT the mode value to WRITE to a register on the SX28 will READ the register on the SX48.
For example MODE $0F on the sx28 will WRITE to the TRIS registers, but on the SX48 $0F will READ from the TRIS registers.
On the SX48 you must use $1F to WRITE to the TRIS registers.

So...

SX28 Code
  MODE $0F

Must be translated into
SX48 Code:
  MOV W,#$1F
  MOV M,W


Now another side affect is that the code on the SX48 mangles the W register, where the code on the SX28 leaves it alone.

Bean.

---------- End of Message ----------


You can view the post on-line at:
http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=114254#m114368

Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com

The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2006 (http://www.dotNetBB.com)