In SX Microcontrollers, SX/B Compiler and SX-Key Tool, tdg8934 wrote:

I have (1) 8 x16 and (1) 4x16 wired up so far (with 4 more rows to add to the 2nd 4x16 making it another 8x16. 

However, I also just realized that having (2) 8x16's would require 6 ports (1 row and 2 columns)+(1 row and 2 columns) and the SX52 only has 5 ports which I wanted to use only 4 ports and have the other one for input controls or something. 

Yes I could use (2) SX-28's like the RobOympics with 4028 chips but it would be nice to have a 16x16 display for a large picture display or something in I would guess (2) 16 bit arrays. 

Can your math version still be used for a 16x16 or is it only for an 8x24?

I will buffer both rows and columns transitor/resistor circuits for the anodes (rows) and ULN2003's for the cathodes (columns). This will invert them so that the 16 rows (transistor/resistor circuit) will be negative inputs coming in and the 16 columns (ULN2003 circuits) will be positive inputs coming in. 

I beleive this is right. 

Thanks JonnyMac!

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