wgungfu, on Sun May 10, 2009 2:52 PM, said:
mcjakeqcool, on Sun May 10, 2009 3:45 AM, said:
So I take it Super Pong is the same game, but with more features, not like the Coleco Telstar which is something diffrent intierly.
The Coleco Telstar is not something "different entirely". It simply used the widely used GY-8500 chip. Atari's and Magnavox's home pong units also evolved to have more than one game. Likewise, they're all called "Pong units" for a reason.
hmm that made me run to my room and grab my $44.50¢ Modern Electronic circuts reference manual
its a book that probably now costs $99 or more
ISBN#-07-040446-1 ITS A COOL BOOK I SOMEHOW CONVINCED MY DAD TO LET ME KEEP.
its cool it has over 1200 pages of cool circut schmatics and I always rememberd the VIDEO game section in the games section the 1st circut in the game section is a add on to the GI's
general instruments AY-3-8500-1 tv GAME CIRCUT!!!!!!!!!!!! ITS THE schmatic to make a gun interface!!!
for shooting games.. these used a photocell transistor I guess the case was gnd so like when the street lights think its dark cause they SEE dark and the resistance changes the photo cell also can be used to set the tint hue on the big screen anyway I was like HMM that chipset looks almost the same i wonder if general instraments made the chips for Magnavox as whell as selling the ay chip for educational kits!! anyway I remember ripping a lot of pong like units apart i got from good will and they almost alyways were based on the same chips I know that the original atari pong was b/w and didnt have a selector switch to select games. I bet you could even add a gun circut to a magnavox unit if you added the selection to the chip'
on page 435 is the gun circut on p 437 is a nother schmatic using a GI 8500-1 chip they say nothing about ay or even gy just 8500 on this circut its a 28 pin chip
pin 25 =reset 23 shorted to gnd=practice 22=squash 21=soccer and 20=PONG pin 7 to ground =slow and open =fast
pin 8 to gnd =auto serve and open =manual serve
pin 5 open =rebound and gnded must be auto serve so i think you unhook to serve then leave shorted mostly I would have to auctually build circut to see. brb going to digikey to see if they have any 8500 chips!!!!!!!! nope but holly crap look
http://www.ic2ic.com...r...00&prefix=A
they actually still exist as a part number for SALE!!!! cool huh.
also on page 438 there are more shcmatics there is a ch2 ch3 rf mod schmatic looks like ralf bears own schamtic he probably inventet the rf modulator the schamtic on page 438 actually states to use a
AY-3-8500-1 chip again GI's chip this one has 6 games damn I should buy stock in GI they made pacman chips pong chips aparently all varients!!!!!! and they made general instraments jerrold cable box descrambler chips and the infamus sattalite video chypher descrambler chips too wow there the company to invest in ...
also on page 439 there is a national semiconductor pong hockey squash chip too its
mm57100n and mm53104n LM1889N modulator and a SL00216 15v regulator also it has a vegistal sideband filter??? on p 440 is a explanation of the lm1889N national's video mod chip.
a nother chip pn page 441 shows a national 5841 ic ofr display of score on video game and for channel and time display hmm this chip might be worth futzing with I would need a zenith chomp cable box cause it wants horizontal and vartical inputs on pin 19 and 18
from ''cmos cookbook''
the pong on page 437 8500 the 8500-1 no ay just plain 8500-1 is from
again c-mos cookbook p166
Howard W Sams Indianpolis IN 1977
the rifile circut on p 435 is taken from
S. Circia, Hey Look What My Daddy Built!,73 Magazine Oct 1976 P104-108
boy i want that magazine! 73 magazine is a cool ham radio magazine.. now on the 15 when i goto the Hamvention ill look for oct 1976 73 magazine!! the gun interface is for the ay-3-8500 chip..
wow wow wow all this talk about chipsets got me exited! I ran to my arcade board shelf and looked at birdie king II board same as Bking 1 and 2 and 3 and viola guess what the sound chips are
GI
they say
SOUND
AY-3-8910
thats defanantly a GI chip but these say TAIWAN on them ..
also i didnt know sharp made z80 i mean Z80a chips no im going to rip apart the pong to see 1st if its gold plated white nuke proof cermaic and to see the Atari # on the chip or if its a GI chip I think its a atari chip but when im in there im looking for a english ''angle pin!!!''' this goes to a pot to gnd and puts english on the ball I had this but when i wired the 2nd super pong inside the cabinet i forgot about that I also need to wire a 25¢ circumvent button. as i have no coin door and have to open it every time i want to empty it.. anyway I am glad you told me about the chip number
so if you want a picture of the schmatic for the gun circut i can send you a digital picture of that page from the book as whell as the schmatic for youre video game!!! oh shit before i forget pin 13 shorted makes the bat size bigger open makes it small I dont know if youre game has these features but you are welcome to add wires switches and pots to youre game to make it more fun plus if it dont have a practice mode add jumper to pin 23 to gnd and practice mode on i bet it just makes a paddle the size of a whall length !!! blocking all ball servs back to you the gun circut hooks to pins 23 and pin 24 I have no idea how to initate gun game but since pin 23 inintates practice i assume you can obtain points by the guns pulse output anyway i want to make whole thing now since i have zenith cable box rf mods w sound inputs i wouldnt need the amplified speaker just input to yellow wire and video to purple and 12v on orange and gnd and viola rf mod free suposing you get zenith box free the last one i got was only $4 at good will a good price for a zenith cable box for parts rf mods run like $19 new and these zenith ones are great they usually have a rf gain pot so if you wanted you could invert signal ....
i will repost once i look at pong if i can get those weird screws open!.
again thanks for sharing the chip numbers that made me happy to actually see a working unit based off a circut i thought was only for kits .... I didnt know Magnavox must have made deal w GI Mabie i could use my fake famicom's 8bit nintendo GUN to use for a project gun case for that gun circut.
******************************************************************************
**************COOL check this out****************
remember to patch adobe 1st DOnt get a virus from adobe security hole************
any way look
http://www.datasheet...p?q=AY-3-8500-1
http://www.datasheet.../Book241-62.pdf
Looking at the pdf pins 18 and 19 pin 18 rifle game1
pin 19 rifle game 2
hmm Ill have to send you pics for the rifle game schmatic..
if you want me to make you a rifle circut I can .
this schmatic says Tennis
Further more acording to this pdf the
General Instrument AY-3-8500 A-Y-3-8500-1
so the ay-3-8500 is the 8500 one1!! the 8500 one has 625 lines and the -1 one has 525 lines
thats why the magnavox has the 8500 w out the -1 cause its pal and pal has more lines..
here is a schmatic I will post picture of gun circut so you can add switch to pin 18 and 19 to gnd so a 3 way switch needed postistion 1 gun mode off postistion pin 18 short gun game 1 switch pos 3 pin 19 short gun game2 I am really glad i looked up info now..
Edited by awace, Tue May 12, 2009 12:51 AM.