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

messagePntr = address 'point to data address of first character of text string
 How do I find out the data address? Isn't this CharMaps: ? or Ascii_Set: ?

-- it would be something like

Msg1:
DATA "T and E is so great!"
 
If so then why do you reference CharMaps later?
READ --> from (charMaps+char)*8 into tmpByte2
You can't have a complex line in SX/B like this.

-- that's why I called it pseudo code. Actually, there's an error there -- should be charMaps+(char*8) -- but regardless... what you are doing is reading the first byte from Msg1 -- which is "T" -- that's really a number -- the ASCII number. Presuming your charMaps are ordered like the ASCII chart, you can use the number that *is* "T" to get a data address (offsetting for non-alphanumeric chars if you like, and multiplying by data block size).

In SXB (though I would do this part in ASM -- way way faster to access "arrays" in ASM then SXB) would be something like:

pntr = char * 8 'set pointer to ASCII # of "char" * 8 (for the byte size of each map)
pntr = pntr - "0" 'offset to start of alphanum chars -- note quotes -- this make it the "number" that represents the char "0"
pntr = pntr+charMaps 'add to address of start of charMaps
'--> start reading 8 bytes from pointer

I'll have a chance to look at your program a little later tonight in detail.

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