RE: Another stack based CPU: J1
The J1 is probably close to the simplest possible useful CPU. Alexander, do you agree with that statement? Is the J1 the same as pil? I see no similarities at all. Also, PilMCU doesn't strive particularly for simplicity (the PicoLisp *language* does). It is rather complex, with built-in database and garbage collection. Ohh.. Of course! Thank you!
Re: Another stack based CPU: J1
Hi David, thanks for the info! Today on HN I read about a tiny stack-based CPU called J1. This is its homepage: http://www.excamera.com/sphinx/fpga-j1.html and here is a more formal description: http://www.excamera.com/files/j1.pdf As Geo said, there have been Forth CPUs around a long time. I saw the first ones around 20 years ago. Forth is a very simple virtual machine, which maps perfectly to hardware. The J1 is probably close to the simplest possible useful CPU. Alexander, do you agree with that statement? Is the J1 the same as pil? I see no similarities at all. Also, PilMCU doesn't strive particularly for simplicity (the PicoLisp *language* does). It is rather complex, with built-in database and garbage collection. ♪♫ Alex -- UNSUBSCRIBE: mailto:picolisp@software-lab.de?subject=Unsubscribe
Another stack based CPU: J1
Today on HN I read about a tiny stack-based CPU called J1. This is its homepage: http://www.excamera.com/sphinx/fpga-j1.html and here is a more formal description: http://www.excamera.com/files/j1.pdf Here is the quote that made me bring this topic to the picolisp mailing list: The J1 is probably close to the simplest possible useful CPU. Alexander, do you agree with that statement? Is the J1 the same as pil? Are there any neat tricks James Bowman used that could be useful in pilmcu? Cheers, --Dave -- UNSUBSCRIBE: mailto:picolisp@software-lab.de?subject=Unsubscribe
Re: Another stack based CPU: J1
Hi Dave, Thanks for sharing this info :) I think i met something similar of this before, it was also a Forth machine And it was developed by the Forth language designer Charles Moore. I think it was called GreenArrays something? Btw the pilmcu progress got a bit slow due to some other urgent works to be done back at the office. But it still going on just in slow pace, will update everyone once i can provide a better news, cheers! BR,Geo On Tuesday, April 14, 2015 10:49 PM, Loyall, David david.loy...@nebraska.gov wrote: Today on HN I read about a tiny stack-based CPU called J1. This is its homepage: http://www.excamera.com/sphinx/fpga-j1.html and here is a more formal description: http://www.excamera.com/files/j1.pdf Here is the quote that made me bring this topic to the picolisp mailing list: The J1 is probably close to the simplest possible useful CPU. Alexander, do you agree with that statement? Is the J1 the same as pil? Are there any neat tricks James Bowman used that could be useful in pilmcu? Cheers, --Dave -- UNSUBSCRIBE: mailto:picolisp@software-lab.de?subject=Unsubscribe
