This information is taken from the schematic for the hook up of the Apple1 to the SWTP GT-6144 graphics board, refer to it while reading this, especially on the PIA pins , 23, 34, 35, 37 and 38.
The chip on the left is for the PIA for the graphic board. All pins marked with a * are connected to the corresponding pin on the keyboard PIA, pins 1, 20, 21, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36. This is listed at the bottom of the sheet on the left side. Pin 22 goes to the address line A3.
INTERFACING A SWTP GT-6144 GRAPHICS KIT TO AN APPLE I MICROPROCESSOR
The STWP graphics board displays a picture made of a 64 X 96 array of rectangles. The schematic I've enclosed is pretty straigt forward. The .006 MFD capacitor connected between pins 6 and 7 of the 74123 controls the length of time that must elapse between each output of date to the GT-6144. I've been unable to load the date faster than the .005 capacitor will allow.