In the second (lower) image the reader can identify several of the necessary interconnections used in development. The first of two cables interfacing this project to a PC are visible (grayish-silver) exiting to the left edge of the photo. The upper cable is an in system programming header used to re-configure the Lattice ISPLSI3256A-90LQ. The second cable (lower) makes the connection between the custom BDM interface I wrote in a second Lattice part (ISPLSI1016E-125LT). This cable interfaces the PC's parallel port directly to the MC68332 processor through the CPLD. This cable allows me to upload new code into RAM or FLASH memories as well as dump registers and step through instruction code when used in conjunction with BD32 software on the PC. Moving clear to the extreme left edge of the photo the high current inverter used to generate the 1,200 ~ 1,400 volts required to drive the cold cathode back lighting tubes is visible. A small bundle of discrete wires routes from my development board to this inverter board to provide power and brightness controls. My development board contains both analog (buffered pot) and digital (DtoA converter) interfaces for back lighting control. The power is 12v at up to 800mA. Another largish bundle (31 qty) of fine wires (30 gauge, light gray) can be seen connected between the middle top edge of the board and the left (middle) of the display screen. This is the TFT data and logic power provided to the screen. There are several other connectors visible on the board for features that have yet to be debugged. Along the front-right and right edges of the board the reader can identify the BNC RF connectors used for video inputs and outputs for the live screen capture and real time video display inputs. Centered on the forward (bottom) edge of the board the reader can also clearly identify the bottom mounted PCMCIA flash card interface used to move pictures between the board and a laptop computer.
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