Just need to clarify...

[MOUNTAIN747]

Al, closer but not there yet. Sorry for the delay, I had to adjust your code to invert the Collumn port for this display. Bruce I haven't tested yours yet but I had started in that direction.

Bitgenerator:
Bvar=-0
random Ran_Word
Avar= Ran_Word.byte0
if Avar.0=1 then Bvar=Bvar+1
if Avar.1=1 then Bvar=Bvar+2
if Avar.2=1 then Bvar=Bvar+4 ;isolate a random number 0to7
Cvar=1
Cvar=Cvar<<Bvar ;set a single bit in the byte
Cvar=Cvar^$FF ;invert for a low on one bit
rcol=Cvar ;set port
Bvar=0
random Ran_Word
Avar= Ran_Word.byte0
if Avar.0=1 then Bvar=Bvar+1
if Avar.1=1 then Bvar=Bvar+2
if Avar.2=1 then Bvar=Bvar+4
Cvar=1
Cvar=Cvar<<Bvar
Row=Cvar
pause 100
goto Bitgenerator

(Wierd: code tag nor the editor would accept << in the code)


this method works (sorry you can't see all the code) but gives some repetition in general pattern on the diagonal. I will use the DCD. I'm still trying to understand Al's "Ran_Word.0[AA0 + 8]" . What is this doing to the PortC.0[AA0], is it resetting to a number less than 8?
thanks guys, I'll have to chew on this for a while.