I've tossed the idea of Squeak out to the Portland Area Robotics Society group list and the response is building up (although a bit sluggish).
One question that immediately arose was whether Squeak is limited to the "Big 3" OS's or is there a VM for other embedded processors maybe without OS's.
The Swiki says Squeak VM's are supported for Mac, MS, RISC and flavors of UNIX.
I remember reading somewhere that a student implemented a VM on a native uP as a Summer project.
Has there been much VM development on embedded uP's.
Is there any work on a Squeak OS on any platform?
Thanks for the support!
- Robert
On 17-Dec-07, at 4:13 PM, Robert F. Scheer wrote:
I've tossed the idea of Squeak out to the Portland Area Robotics Society group list and the response is building up (although a bit sluggish).
One question that immediately arose was whether Squeak is limited to the "Big 3" OS's
No - it's been ported to many systems. I've supported the RISC OS port for ten years as well as having done several other minimal/no OS ports.
or is there a VM for other embedded processors maybe without OS's.
The Swiki says Squeak VM's are supported for Mac, MS, RISC and flavors of UNIX.
That would be RISC OS, as in Acorn, as in the original inventors of the ARM cpu.
I remember reading somewhere that a student implemented a VM on a native uP as a Summer project.
Has there been much VM development on embedded uP's.
Mitsubishi M32R/D Interval Research 'MediaPad' MITS most other small machines seem to have a cut down linux put on them.
tim -- tim Rowledge; tim@rowledge.org; http://www.rowledge.org/tim Useful random insult:- Put a lens in each ear and you've got a telescope.
Thanks Tim. I don't know anything about RISC OS or the specific micros' that have native ports. But you're right, anything that hosts a mini-Linux should work.
C and C++ are often used to write low-level code for robots on 8, 16 and 32 bit processors made by Atmel, Microchip, Freescale, Parallax and so on. These are heavily oriented to analog and digital I/O with sensors and motors.
I know many people would like to get away from the letter C.
- Robert
On Mon, 2007-12-17 at 16:28 -0800, tim Rowledge wrote:
On 17-Dec-07, at 4:13 PM, Robert F. Scheer wrote:
I've tossed the idea of Squeak out to the Portland Area Robotics Society group list and the response is building up (although a bit sluggish).
One question that immediately arose was whether Squeak is limited to the "Big 3" OS's
No - it's been ported to many systems. I've supported the RISC OS port for ten years as well as having done several other minimal/no OS ports.
or is there a VM for other embedded processors maybe without OS's.
The Swiki says Squeak VM's are supported for Mac, MS, RISC and flavors of UNIX.
That would be RISC OS, as in Acorn, as in the original inventors of the ARM cpu.
I remember reading somewhere that a student implemented a VM on a native uP as a Summer project.
Has there been much VM development on embedded uP's.
Mitsubishi M32R/D Interval Research 'MediaPad' MITS most other small machines seem to have a cut down linux put on them.
tim
tim Rowledge; tim@rowledge.org; http://www.rowledge.org/tim Useful random insult:- Put a lens in each ear and you've got a telescope.
On Mon, 17 Dec 2007 17:05:36 -0800, "Robert F. Scheer" rfscheer@speakeasy.net wrote:
Thanks Tim. I don't know anything about RISC OS or the specific micros' that have native ports. But you're right, anything that hosts a mini-Linux should work.
I'm going to be getting a Hammer (http://www.tincantools.com) in the next week or two, and I definitely will be getting Squeak running on it.
Hey Tim - what do you think? A 200 MHz ARM9 in a footprint the size of a DIP-40 chip...
Later, Jon
-------------------------------------------------------------- Jon Hylands Jon@huv.com http://www.huv.com/jon
Project: Micro Raptor (Small Biped Velociraptor Robot) http://www.huv.com/blog
On 17-Dec-07, at 5:05 PM, Jon Hylands wrote:
I'm going to be getting a Hammer (http://www.tincantools.com) in the next week or two, and I definitely will be getting Squeak running on it.
Hey Tim - what do you think? A 200 MHz ARM9 in a footprint the size of a DIP-40 chip...
Not bad for size. A bit different to the old days when the ARM system required a set of 4 chips to get going, aside from the ram/rom/ support. Performance should be reasonable at around 15M bc/sec and around a million sends/sec. Just don't expect to run Morphic nicely :-)
Shouldn't you be using an ARM11X6JF-S by now? 600MHz, vector floating point h/w, bigger caches and TCM etc.
tim -- tim Rowledge; tim@rowledge.org; http://www.rowledge.org/tim A fool and his money are soon partying
On Mon, 17 Dec 2007 17:19:18 -0800, tim Rowledge tim@rowledge.org wrote:
Not bad for size. A bit different to the old days when the ARM system required a set of 4 chips to get going, aside from the ram/rom/ support. Performance should be reasonable at around 15M bc/sec and around a million sends/sec. Just don't expect to run Morphic nicely :-)
Nope, this is strictly for an embedded headless robot controller.
Shouldn't you be using an ARM11X6JF-S by now? 600MHz, vector floating point h/w, bigger caches and TCM etc.
Well, the gumstix I am using has a 600 MHz XScale on it. If you can point me to a board in that size range with that chip on it, I'd be happy...
Later, Jon
-------------------------------------------------------------- Jon Hylands Jon@huv.com http://www.huv.com/jon
Project: Micro Raptor (Small Biped Velociraptor Robot) http://www.huv.com/blog
On 17-Dec-07, at 6:26 PM, Jon Hylands wrote:
Shouldn't you be using an ARM11X6JF-S by now? 600MHz, vector floating point h/w, bigger caches and TCM etc.
Well, the gumstix I am using has a 600 MHz XScale on it. If you can point me to a board in that size range with that chip on it, I'd be happy...
the smallest thing I know of using that stuff is an iPhone :-)
tim -- tim Rowledge; tim@rowledge.org; http://www.rowledge.org/tim Strange OpCodes: SDR: Shift Disk Right
On Mon, 17 Dec 2007 17:19:18 -0800, tim Rowledge tim@rowledge.org wrote:
Not bad for size. A bit different to the old days when the ARM system required a set of 4 chips to get going, aside from the ram/rom/ support. Performance should be reasonable at around 15M bc/sec and around a million sends/sec. Just don't expect to run Morphic nicely :-)
So, you were close...
15,640,273 bytecodes/sec 502,667 sends/sec
Kinda off on the sends though. A 600 MHz gumstix (XScale) gets this:
35,694,366 bytecodes/sec 1,444,513 sends/sec
Later, Jon
-------------------------------------------------------------- Jon Hylands Jon@huv.com http://www.huv.com/jon
Project: Micro Raptor (Small Biped Velociraptor Robot) http://www.huv.com/blog
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