It appears to be a bank selector activated with the restore button. You can see that one wire is going to R17, which is connected to the restore button. -donni ----- Original Message ----- From: "Jim Brain" <email@example.com> To: <firstname.lastname@example.org> Sent: Sunday, February 19, 2012 5:20 PM Subject: Re: Weird Bank Select PCB attached to C64 ROM > On 2/19/2012 10:09 AM, Jim Brain wrote: > > Via translation, I determined it's a bank select circuit, but I am still > curious as to how it works. >> http://allegro.pl/commodore-64-c-2-os-y-i2077847284.html (last 2 >> pictures) >> >> I can see Vcc, Gnd, and /CE of the EPROM, which appears stacked on top of >> the original ROM, but the rest eludes me. >> >> Jim >> > > > -- > Jim Brain > email@example.com > www.jbrain.com > > > Message was sent through the cbm-hackers mailing list Message was sent through the cbm-hackers mailing listReceived on 2012-02-19 17:00:25
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