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24 lines
2.6 KiB
Markdown
24 lines
2.6 KiB
Markdown
# RC6502 Apple 1 Replica
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I've been spending a lot of time lately working on extensions to the excellent RC2014 machine, check out the official web page at [http://rc2014.co.uk](http://rc2014.co.uk) if you're not familiar with it. Unquestionably, a lot of fun!
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Armed with the knowledge from building that kit I decided to attempt to create one myself, lack of knowledge when it comes to circuit design and pcb layout aside shouldn't be a problem right? Not as long as you enjoy tinkering with stuff.
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The RC6502 is that kit, and since I wasn't yet born at the time and therefore did not own one I decided to create a working replica of the Apple 1 computer. The original schematics are readily available on the Internet - as is also an excellent book on the topic; [Apple 1 Replica Creation, Back to the garage](http://www.applefritter.com/) by Tom Owad.
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I've been documenting the build process of the various components on my blog at [https://hvetebolle.blogspot.no/p/rc6502.html](https://hvetebolle.blogspot.no/p/rc6502.html), but be warned that it's in my native language (Norwegian) so this might not be anywhere close to readable for most people.
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## Modules
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Like the RC2014 I've decided to keep things very modular with each card more or less doing one simple thing, easier to wrap ones head around as a beginner and much easier to understand - also a lot cheaper to upgrade or replace since you don't need to replace the entire thing. Note that I haven't decided on designing my own backplane, mainly because the RC2014-version works really well (see RC2014 tindie page for ordering) and I've already got it.
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In order to use the RC6502 you'll need the following modules:
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- Backplane (see RC2014)
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- [CPU](https://github.com/tebl/RC6502/tree/master/RC6502%20CPU)
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- [RAM](https://github.com/tebl/RC6502/tree/master/RC6502%20RAM)
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- [ROM](https://github.com/tebl/RC6502/tree/master/RC6502%20ROM)
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- [Reset Circuit](https://github.com/tebl/RC6502/tree/master/RC6502%20Reset%20Circuit)
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- [Serial IO](https://github.com/tebl/RC6502/tree/master/RC6502%20Serial%20IO)
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If you want your own fabricated versions of the modules in the form of PCBs to own and and assemble yourselves, there are quite a few options avaiable though I myself mainly use [Seeed Studio](https://www.seeedstudio.com/fusion_pcb.html) since they are reasonably priced for us Europeans. Zip up the contents of each modules export folders and give them that to get an estimate - I've stayed within the least pricy tier so at the time of writing you'd end up paying 4.90 USD plus shipping per module. |