September 2007 Meeting NotesCompiled by Dave JaffeContributions from Kevin Appert and others
|
|
09:45 |
Coffee and a chat |
10:15 |
Simple Effective HTML - CH Ting
|
12:00 |
Lunch |
13:00 |
Introductions, announcements, rumors, and random access |
13:30 |
LaFarr's Steel-Cut Unsieved Primes -
LaFarr Stuart
This is a list of things I talked about at the SVFIG meeting on 22nd Sept. Graphical proof of Pythagorean Theorem Graphical proof Area of a circle is Pi(r^2) Tools needed for Assembly Language programming. An Assembler (I like A86 by Eric Isaacson) A description of the processor instructions A description of the operating system functions Several tools such as: A good editor (I customized SemWare's Junior Editor under DOS - worth it just for the spelling checker) A Debug facility (DEBUG comes with Microsoft Windows ??) A File Dump routine (Include my DUMP.COM) A File Compare program (SUPERC - contact me about it) A program to read the computer clock (for timing) Programs I demonstrated: DT Prints Date & Time optional text after DT on command line HELLO PAN Phone Alpha to telephone number SX & SXS Sequence Extender (SXS shows steps--more for debugging.) NP3 New Prime number generator - uses 386 32-bit registers. Features: Outputs 1 byte for each prime Use KCHAR and DUMP to show. Don't test multiples of 2 or 3 P & Q Tables DS and ES are separate 64K Segments. SS is 1000 bytes higher For speed Q is in ES & P in DS at same address The first 4000 hex bytes of ES is the output buffer Put value being tested at top of Q Don't need low order bit At any point in time the high bits are all the same PPN Print Prime Numbers to display in decimal, variable number of columns PGC Print the Count of Gaps between consecutive primes PPT Print Prime Twins (only the last of the two) KCHAR Keeps first n characters of a file DUMP Displays a file in Hex and ASCII Directory of my prime programs as of: 2007-09-20 Ordered by Size HELLO COM 21 01-10-29 15.49 PAN COM 82 04-05-19 19.01 KCHAR COM 342 93-11-19 11.24 DT COM 394 98-11-01 15.53 PGC COM 402 07-09-20 11.51 PPN COM 572 07-08-23 20.40 PPT COM 576 07-08-29 16.59 DUMP COM 576 01-12-02 9.23 SXS COM 702 02-08-21 18.17 SX COM 704 02-08-21 18.14 NP3 COM 884 07-09-04 6.32 11 file(s) 5 255 bytes -------------------------------- Quick notes added to help with programs: To get "tiny help", TYPE any of the .com files except: HELLO.COM & PAN.COM The .8 and .S8 files are source, however I use ` names to drop in "boiler-plate" to help understand it a little better I have included PGC.8 which has everything expanded. A86 allows local labels, which can be re-used. They are a single letter followed by a number. A forward reference is preceded with a > without it it is a backward reference.
|
14:40 |
|
15:00 |
Audible Computing, Part 2 - Masa
Kasahara
|
16:00 |
Adjourn |
Other items:
|
|