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Family Computer => Technical & Repair Assistance => Topic started by: FAMICOM_87 on August 07, 2015, 02:12:06 pm

Title: NOAC (NES-on-a-chip)
Post by: FAMICOM_87 on August 07, 2015, 02:12:06 pm
Hi I am interested when was produced the first NOAC (NES-on-a-chip) and where?
I found that  the first revisions of Terminator 2 (Super Design Ending-Man BS-500 AS) was produced around 1992, and as I know all of them are NOAC's
Is that true, because in my opinion 1992 is too early for an NOAC technology.
What do you thing guys ?

https://en.wikipedia.org/wiki/Terminator_2_%28console%29

Title: Re: NOAC (NES-on-a-chip)
Post by: chowder on August 07, 2015, 02:45:10 pm
From the wiki:

"CPU: 8-bit MOS 6502 1.79 MHz"

So it sounds like that clone actually used discrete CPU/PPU chips.  1992 is too early for NOAC clones, >1996 Famiclones mainly used the single chip designs.

I have no idea what the first NOAC based Famiclone was, something Chinese?
Title: Re: NOAC (NES-on-a-chip)
Post by: jpx72 on August 08, 2015, 02:03:16 am
I think 96 - 98 is more likely.
I have plenty pre 96 clones and all are full hardware clones.
Info on the wiki simply says it had a cloned CPU, NOAC means that Everything is on one chip, not just CPU. Although I have not seen a Terminator without NOAC before, there were many versions of it.
Title: Re: NOAC (NES-on-a-chip)
Post by: FAMICOM_87 on August 10, 2015, 03:06:53 pm
ok I found this in our forum, so 1995 is may be the year :)

(http://hitechretrojunkie.weebly.com/uploads/3/2/4/3/3243718/1365121387.png)


but look NOAC in SMD  :)

(http://www.dendy-steepler.narod.ru/microgenius/DendyJr_v2/JuniorMG2_5.jpg)



Title: Re: NOAC (NES-on-a-chip)
Post by: chowder on August 11, 2015, 04:19:09 am
That's the UMC6561 - according to the translated version on this site, it was released around 1992-1993:

https://sv.wikipedia.org/wiki/NES-on-a-chip

I guess there was an overlap, I've seen Famiclones that use discrete chips made around 1994-1995, that's the earliest NOAC based system that I've seen though  :)
Title: Re: NOAC (NES-on-a-chip)
Post by: FAMICOM_87 on August 11, 2015, 08:44:10 am
wow surprising ! so when official Nintendo made AV famicom and NES 2 top loader , UMC already invented IC that integrate everything in it  :o
Title: Re: NOAC (NES-on-a-chip)
Post by: number47 on August 11, 2015, 01:29:16 pm
I know that my Zhiliton from 1994 has a globtop version of UMC6561 in it.
Title: Re: NOAC (NES-on-a-chip)
Post by: FAMICOM_87 on January 26, 2016, 03:04:17 pm
I found the first version of  "terminator 2" !

(http://i.imgur.com/MXgBKUl.jpg)