Saturday, June 20th - Third Saturday

Stanford University
Terman Engineering Center
Room 556

Terman Engineering Center can be found on these maps - just search for Terman: Google map or Searchable Stanford Campus Map

There is open parking on weekends. Park in any A or C or metered space.

Take the elevator to the 5th floor. Walk across the foyer and up the ramp just to the left of the glassed-in office. Room 556 is at the top of the ramp - entrance on the left.

If you would like to have meeting announcements e-mailed to you, send the message Subscribe SVFIG Meeting Agenda to: George Perry

Wireless Internet access is anticipated (though not guaranteed) at Stanford, so bring your wi-fi enabled laptop.

Meeting Agenda for June 2009

10:00 --- Coffee and a Chat

10:15 --- Dissecting thisForth - CH Ting
"I am trying to fully understand Wil Baden's thisForth to build my eForth in C. It is a daunting task because thisForth uses the M4 macroprocessor to build its C program. I even called Wil and can report that he is in good health at 81. I was able to delete all the optimization Wil put in thisForth, and kept it working. I will discuss how thisForth was constructed and some of its internal structures."

11:40 --- Lunch
Lunch on-campus. To avoid the "noon lemming effect", we'll leave a little early.

12:30 --- Consensus-based Detour: New Guinea Sculpture Garden
On the way back from lunch we might detour to this interesting collection. (If we decide to do this, add 12 minutes to the start time of all items below.)

13:00 --- Introductions, Announcements, Rumors, and Random Access

13:20 --- Rational Representation of the Irrational - LaFarr Stuart
LaFarr will say something about a couple different "words" that he thinks would be interesting in a stack-oriented language and possibly a bit about finding best fractions such as: 22/7 or 355/113 for Pi based on Continued Fractions (which involve pretty complicated mathematical proofs; but there are relatively easy ways to use the result, even with just a pencil and paper).

14:23 --- Break

14:32 --- Running FIG-Forth on Simulated National Semiconductor PACE and IMP-16 Processors - Eric Smith
Eric will present further discussion and demonstration of FIG-Forth running on a PACE simulator. Since last month, he's rewritten the simulator in C (it was in Java before) and added a simulated disk. He has started work on converting PACE FIG-Forth to an IMP-16 FIG-Forth with the eventual goal of running it on a "real" IMP-16 system.

15:17 --- Photos from Maker Faire 2009 - Dave Jaffe
One hundred and nineteen images.

16:00 --- Adjourn

How you can help SVFIG:

  • Bring your speaker and topic suggestions to every meeting!
  • Your input for and participation in next year's Forth Day is always welcomed.

Coming to SVFIG:

Mitch Bradley's Forth in C - a volunteer is needed to present and demonstrate this software

Update on IntellaSys Chips - John Rible
The chips John Rible will be selling to SVFIG are being tested now and perhaps he'll be at a future meeting to give us an update.

Engineering TV
Fifty engineering topic channels, four new episodes per week.

Botbash 2000 Video
A cheapie video of a May 2000 robot rumble in Mesa, AZ.

PowerMOPS Demo
Looking for a volunteer to present this.

Prototyping with QFP Parts - Kevin Appert
This presentation will be based on an article in the September 2008 issue of Circuit Cellar entitled "Prototyping with QFP Parts".

WAV File and Soundcard I/O Software Using Win32Forth - Andy Korsak
This software was written for amateur radio applications. Andy has suggested that it might be useful to look at his code in advance of his talk. Contributions to this work-in-progress would be welcomed. You can download and view his sound card software on the Win32Forth group (membership required), or here.

Please register your interest for these topics:

If you have anything you'd like to talk about for the June meeting,
please contact Kevin Appert.

Meeting Notes