version	date	remark
12	280305	add 7-digit displays for player 1 - 4 (optional), add version nummber, 
		recalculate checksum
		installation notes (optional):
		replace the four player 6-digit displays with 7-digit displays
		Add an additional wire fom A4 (mpu) J1 Pin 7 to every player display pin 12 (don't connect the credit display !)
		installation note:
		burn the U6 amd U2 files on 2732 eproms
		after power on you will see the version number in the one player display
		You can leave the 6 digit displays in place no dip switch is needed, because goldball internally 
		works with 7 digit scoring.
		new with version 10:
		improved attract modus (based on ideas from inkochnito)
		enable freegame when dip 25 and dip 26 = on (credit not lower then 01)
		This version is based on the bally gold ball service kit, this means when
		if dip14 = 0 and dip15 = 0 and dip16 = 0
		the "gold ball" is reached when you complete the goldball letters.
		Also dip24 = 1 means:
		Top Rollover Button, Gold Ball special when flashing, comes 
		on at the start of "gold Ball" play, and every subsequent ball-in-play if not collected
		Also dip24 = 0 means:
		Top Rollover Button, Gold Ball special when flashing, comes 
		on at the sort of "gold Ball" play.
		For the following events the sound had changed:
		special award,10 point rebound,Goldball complete,30 points rebound, PLAY lanes
		miss letter center (left and right target),spot goldball letter, left return lane, top right star, 
		right star, extra ball awarded, tilt, PLAY already lit, right and inner left outlane
		target 1, 2, 3 already lit, target 1, 2, 3,1-2-3 complete
		play lanes (50k, extra ball, special) always reset if dip switch 7 is off 
		new version 12:
		correct GI problem, golball complete only played once

Have fun, 
greetings Oliver