Re: General 6809 card for 6502 machines

A board replacing the super pet would be great!!! and probably not so big


it is probably also possible to build something similar to liber809... 
if liber809 is probably  using Atari specific 6502 signal

MOD69 for the SYM1 was replacing a standard 6502...

the SYM1 aslo had  a MOD68 to replace the 6502 by a 6800

http://www.6502.org/trainers/synertek/sym1_69_mod_board/sym1_69_mod_board_photo.jpg

http://archive.6502.org/datasheets/synertek_popular_products.pdf



Le 18/10/2017 à 07:35, Baltissen, GJPAA (Ruud) a écrit :
> Hallo allemaal,
>
>
> Mia schreef:
>> There is already a general 6809 card for 6502 machines - atleast
>> developed on/for Atari 8-bit computers but should work in any 6502
>> machine.
> Eh, what about the SuperPET? Schematics available AFAIK. Good start IMHO. One remark: as engineer I never liked the solution of powering the 6502 off for shutting it down.
>
> That card is indeed the Liber809 as noticed by others. I asked the designer for info but no schematics or what ever and he charged $70 for the whole for the card.
>
>
> Didier schreef:
>> I've tested this board on several 6502 machines.... no way to use it :(
> The 6502 of Atari is different, one thing I am quite sure of: it could be tri-stated.
>
>
> Met vriendelijke groet / With kind regards, Ruud Baltissen
>
> www.Baltissen.org
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