Hi I've seen similar boards under name Ultra Electronic MW 8160/8096 A but there was almost identical to you here: http://cbm-hackers.2304266.n4.nabble.com/Unknown-to-me-64k-RAM-card-for-the-PET-td4656199.html https://www.forum64.de/index.php?thread/45612-speichererweiterung-ultra-electronic-mw-8160-8096-a/ Regards, Zoran On 03/27/2017 06:24 AM, Richard Lagendijk wrote: > Op Ma, maart 27, 2017 01:00 schreef Christian Dirks: >> Am 26.03.2017 um 16:10 schrieb Richard Lagendijk: >> >>> I'm organising my collection and I found an expansion. But I do not >>> know what it is. It has 8 RAM chips and a lot of logic ICs. No markings >>> on the PCB (could be home-made). >>> It was in a box with other PET things. >>> http://www.richardlagendijk.nl/div/mistery_expansion_pet.jpg >>> Does anybody has an idea? >>> >> Looks very familiar to me. >> Seems to be one of the many bootlegs of Helmut Proxas MW8160/8096A >> boards, a 64k expansion for the 8032. It plugs into the 6502 socket, and >> the 6502 plugs in the board. It is compatible to the commodore 64k >> expansion, which makes a 8032 a 8096, and has some additional features. >> The original version from Helmut allows stacking another row of 4164 on >> it, to get a 8160 (32k + 64k + 64k = 160k). >> >> I sent Helmut the link to have a look at it. >> >> >> >> -- >> Christian Dirks >> Toast_r@Idealine.info >> >> >> >> >> > Yes, on the bottom side of the PCB there is a socket that can connect to a > 6502 socket on the motherboard. The cable connects to the 5VDC regulator > on the PCB. > > Richard > > > > Message was sent through the cbm-hackers mailing list Message was sent through the cbm-hackers mailing listReceived on 2017-03-27 20:00:01
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