I am wanting to install Jiffy dos on my vic. I bought some m2764 chips to blow the software onto but these are 28pin and the kernal on the vic is 24 pin. Does anyone know what chip I would need to get to blow the software onto or is there a way of wiring the 28 pin down to 24 pin?
Thanks
Gary
Vic-20 Jiffy Dos
Moderator: Moderators
There probably are many ways to do the wiring. Here is one of the more advanced ones:
http://freenet-homepage.de/x1541/hardware/2364.html
I think the only pin compatible EPROM is the Motorola 68764, which however far from all programmers recognize.
Read a bit more here:
http://www.faime.demon.co.uk/retro/2364.html
http://freenet-homepage.de/x1541/hardware/2364.html
I think the only pin compatible EPROM is the Motorola 68764, which however far from all programmers recognize.
Read a bit more here:
http://www.faime.demon.co.uk/retro/2364.html
Anders Carlsson
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- Vic 20 Amateur
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- Vic 20 Amateur
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Yes you can use 2764 just as I did. making an adapter is pretty easy if you can't source one easily. Wire it like shown here;
http://symlink.dk/nostalgia/c64/rom/
Browse through my pages for an idea on how I made mine if you like.
http://www.users.on.net/~clockmeister
http://symlink.dk/nostalgia/c64/rom/
Browse through my pages for an idea on how I made mine if you like.
http://www.users.on.net/~clockmeister
- eslapion
- ultimate expander
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Over the last few years, every now and then, me and a bunch of people pooled together to make a large order of 2764-27512 to 2364 adapter boards.
The more we order, the lower the price.
It was funny in the last order to see the price of the boards drop on a daily basis as more and more people joined in.
Its been quite a while since the last batch so maybe when I come back home next may would be a good time to make another batch.
The last batch was around 300 boards.
The more we order, the lower the price.
It was funny in the last order to see the price of the boards drop on a daily basis as more and more people joined in.
Its been quite a while since the last batch so maybe when I come back home next may would be a good time to make another batch.
The last batch was around 300 boards.
Be normal.
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