According to Ron Nelson, by the time Excalibur New York Times Deluxe was conceived, the H8 ROM’s were being phased out of production, therefore this chess computer was developed around the 65C02 SPLB36A1 processor from the manufacturer Sunplus. This created its own unique set of problems as Nelson’s H8 program had to be translated to work with this new processor which has a 6502 core. This processor had less available RAM therefore in order to make the program fit to these new lower specifications , adjustments were made to the program which included the removal of Nelson’s Attack Bit Map Tables and the commenting out of the Ponder routine, which were both important strength of play features that existed in Nelson’s H8 program. All these adjustments resulted in a new lesser strength chess program for use with the 65C02 SPLB36A1 with its own unique play behavior. Excalibur New York Times Deluxe was manufactured for Excalibur Electronics in the Shenzen Province of China.
For reading of Ron Nelson comments go to: Hiarcs Forum