Here is a first "all-in-one" demo - SD card interface, graphics, text, speech! Here is the program: 00 F08 # clear registers 01 F20 # display registers 0 and 1 on the LED display 02 50A # enable draw line (x1, y1) - (x2, y2) mode; display (0,0) - (x7F,x1F)...