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Title: Bally U18-U20 27C256--More info needed Post by: TTJACKPOT on August 23, 2012, 06:26:07 PM I know that the U-18 and U-20 take the 27c256 eprom, but what I am not sure about is the correct speed required or if they have to be CMOS or not--also the voltage varies on these chips as well--If someone can tell me this info then I can order some spare chips--Thanks: John T
Title: Re: Bally U18-U20 27C256--More info needed Post by: CVslots on August 24, 2012, 01:21:07 AM Ok! Well, 2 factory chip labels later ( :96- ), my complete uneducated guess is 100ns or faster....chips are labeled 27C256-1....the -1 leads me to believe the 100 ns or faster, as I've seen similiar ratings on other chips (i.e. -15, -12, -10).
Roslyn p.s. And now let's just hope no one bitches about the "half peeled off and taped back on" labels on my Bally chips! :97- Title: Re: Bally U18-U20 27C256--More info needed Post by: coorslight115 on August 24, 2012, 02:14:45 AM Ok! Well, 2 factory chip labels later ( :96- ), my complete uneducated guess is 100ns or faster....chips are labeled 27C256-1....the -1 leads me to believe the 100 ns or faster, as I've seen similiar ratings on other chips (i.e. -15, -12, -10). Roslyn p.s. And now let's just hope no one bitches about the "half peeled off and taped back on" labels on my Bally chips! :97- 150or faster IE: 27c256-150, 27c256-120, 27c256-100 ect...Roslyn you can half peel back anything with no complaints...hahahahah ...Sorry had to !!! Title: Re: Bally U18-U20 27C256--More info needed Post by: TTJACKPOT on August 24, 2012, 12:07:33 PM Thanks for the info--already ordered them--John T
Title: Re: Bally U18-U20 27C256--More info needed Post by: CVslots on August 24, 2012, 12:12:03 PM Ok! Well, 2 factory chip labels later ( :96- ), my complete uneducated guess is 100ns or faster....chips are labeled 27C256-1....the -1 leads me to believe the 100 ns or faster, as I've seen similiar ratings on other chips (i.e. -15, -12, -10). Roslyn p.s. And now let's just hope no one bitches about the "half peeled off and taped back on" labels on my Bally chips! :97- 150or faster IE: 27c256-150, 27c256-120, 27c256-100 ect...Roslyn you can half peel back anything with no complaints...hahahahah ...Sorry had to !!! :141- :141- :141- |