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Forum Index : Microcontroller and PC projects : 8-Bit Basic Computer
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elproducts Senior Member  Joined: 19/06/2011 Location: United StatesPosts: 282 |
Interesting Basic Computer built around and 8-bit device and completely easy to built DIP package. Wonder if this could be done with a PIC18F and Great Cow Basic. 
More Info Here www.elproducts.com |
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Grogster Admin Group  Joined: 31/12/2012 Location: New ZealandPosts: 9486 |
Looks interesting. Smoke makes things work. When the smoke gets out, it stops! |
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Lou Senior Member Joined: 01/02/2014 Location: United StatesPosts: 229 |
el, I would be interested if it were a PIC. When the summer chores are done in Oct or so I'm going to seriously try CGB. Lou Microcontrollers - the other white meat |
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djuqa Guru  Joined: 23/11/2011 Location: AustraliaPosts: 447 |
Looks like a 8bit wannabe maximite/micromite that sort of works. VK4MU MicroController Units |
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| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9486 |
HAHAHA!!!!!!   Smoke makes things work. When the smoke gets out, it stops! |
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vasi Guru Joined: 23/03/2007 Location: RomaniaPosts: 1697 |
If PIC18F has to be involved, it must be a 64MHz capable device 'cause it will match the ATmega1284P speed at 16MHz. P18F46K22 is a 40 pin device with 64Kb FLASH (do we have one with 128Kb?) and 4KB RAM (that ATmega has 16Kb RAM - a monster). Good for Dk-Basic. The SPI, I2C and Analog pins on ATmega are available on those free ports... I think it is possible if the TV-out thing can be implemented. Anyway, I guess Microchip complicate too much the peripheral thing... too many features are battling for the available pins... ____________ It will be much more useful if it comes designed for Gameduino 2 (and then, things are simplifying much more as you can use Firewing BASIC). Worth a try? Hobbit name: Togo Toadfoot of Frogmorton Elvish name: Mablung Miriel Beyound Arduino Lang |
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| vasi Guru Joined: 23/03/2007 Location: RomaniaPosts: 1697 |
Oops. in the actual implementation, around 8Kb of RAM are used for Video frame buffer. A gameduino 2 (or even one from Olimex) is a requirement. And with Dk-Basic (bytecode compilation) you can make a better 8bit computer. Still, too less RAM on PIC18F! From the comments, there is a tip regarding Video: [quote]Just a tip from someone who built this before: try using SPI2X for serializing the video output, or alternately use a 74165 PISO. You'll get much better video resolution, definitely worth it. [/quote] Hobbit name: Togo Toadfoot of Frogmorton Elvish name: Mablung Miriel Beyound Arduino Lang |
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| elproducts Senior Member Joined: 19/06/2011 Location: United StatesPosts: 282 |
PIC18F67K22 has 128k and 3.8k RAM but its a 64 pin part so you lose the DIP package. I didn't see any reference for the Gameduino requirement. Oh well, Just nice to see more people trying to keep BASIC programming alive and fun. Hard to beat the Maximite/Micromite though. www.elproducts.com |
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| vasi Guru Joined: 23/03/2007 Location: RomaniaPosts: 1697 |
It becomes a requirement if you want to do your own using a PIC18F as you don't have a 8Kb of RAM for the video frame buffer. On other words, you give up on generating video signal using the microcontroller and you have more features for the BASIC interpreter. I thought my comments where clear enough... I have to work more on my English. It is everything there, in your link... Hobbit name: Togo Toadfoot of Frogmorton Elvish name: Mablung Miriel Beyound Arduino Lang |
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| vasi Guru Joined: 23/03/2007 Location: RomaniaPosts: 1697 |
Great Cow Basic compiler for PIC18F46K22 is better than any 8bit BASIC computer, including and ATmega based one... Chipino will gain more if is backed up by a powerful 8bit microcontroller, and then can be a real alternative to Arduino. Hobbit name: Togo Toadfoot of Frogmorton Elvish name: Mablung Miriel Beyound Arduino Lang |
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