My favorite things at VCF Midwest! @DrDavesDiversions

Dr. Daves Diversions | My favorite things at VCF Midwest! @DrDavesDiversions | Uploaded September 2021 | Updated October 2024, 3 minutes ago.
In this video I share my favorite things seen at Vintage Computer Festival Midwest (VCF Midwest 16, Sep 2021) with accompanying photos and backstory.

Filmed at the Vintage Computer Festival Midwest: VCF Midwest 16, September 11, 2021
vcfmw.org

00:00 intro
00:13 an introlude
02:22 Commodore PET
02:55 another PET
03:27 modern C64 game author
03:53 Forgotten Machines
04:15 How the 8-Bit Demoscene Works (David Murray)
05:13 TRS-80 Model III
06:02 DEC VT 420
07:22 Vintage Computer YouTubers Discussion Panel (8-Bit Guy, LGR, and Ken from Computer Clan)
08:01 DEC VT100
08:50 Amiga 2000, Commodore 128D, Commodore SX-64, MSD floppy drive
09:18 MITS Altair 8800 replica
11:14 TRS-80 Model 4P
11:38 Ultimate Networking with GEOS (Cenbe)
13:05 Atari XE System
13:57 A-Max cartridge (Mac emulator for Amiga)
14:50 TeleVideo Rises Again: Recreating a lost machine (Pat Finnegan)
15:56 Acorn A3000
18:03 heading home, a last acquisition :)

Related:

VCFMW 16 (2021) YouTube Playlist:
youtube.com/playlist?list=PLE-Iywr9LQERvrBi8w95umcf1y1RE7qCe

"The One Where We Discuss the Amazing Time We Had at Vintage Computer Festival Midwest!" (Ron's Computer Videos)
youtube.com/watch?v=1ie6b_1IjHc

"Altair 8800 Replica" (element14 presents)
youtube.com/watch?v=zqRILp6srBk

"ALTAIR 8800 EMULATOR KIT"
adwaterandstir.com/product/altair-8800-emulator-kit

"PDP 11/23 running UNIX version 6 at VCF Midwest!"
youtube.com/watch?v=_Zyng5Ob-e8

cc65 library for accessing the DOS and network functions of the Ultimate II+ cartridge and Ultimate 64 motherboard
github.com/xlar54/ultimateii-dos-lib

Acorn Archimedes / A3000
en.wikipedia.org/wiki/Acorn_Archimedes#A3000

The First ARM Processor Computer - Acorn Archimedes A3000 (EEVblog)
youtube.com/watch?v=tPq7OF3fkcE
(Dave says the A3000 uses the ARM2 processor..... now I see Wikipedia says the same. :) )

Acorn Archimedes A3010: Was It Better Than The Amiga? (Dan Wood)
youtube.com/watch?v=Z1osEX6eYHE

"My First Vintage Computer Festival Midwest - What did I find? (VCF Midwest 2021 - Part 1)"
youtube.com/watch?v=1PYrUAD64-s

"PDP 11/23 running UNIX version 6 at VCF Midwest!"
youtube.com/watch?v=_Zyng5Ob-e8

New Tank Mouse: some are scrolling randomly

Tandy Radio Shack TV Scoreboard Composite Mod and HDMI #SepTandy 2022 #VCFMidwest2022

PDP 11/23 running UNIX version 6 at VCF Midwest!

Clicky Keebs: IBM Model M vs. Everex Enhanced

Service Engine Soon: my 1989 Trans Am GTA

$C64 Turtle Graphics: Rotational Symmetries from Repeating Decimals #shorts Fun with Turtle Graphics on the Commodore 64 c. 1984! This is a visualization is of the value 1/7 (one-seventh), a rational number with a repeating decimal that forms a nice rotationally symmetric figure when its base 10 digits are used to determine the fraction of 360 degrees rotated before drawing the next line segment. Here is what I wrote today using HESwares Turtle Graphics II (c) 1983. Because this language does not have arrays, I could not simply drop the digits of 1/7 (0.14285714285714...) into an array like they do using python in the Numberphile videos (linked below). Instead, I decided to calculate each digit on each loop iteration (DRAW). Note that C64s INT() function is actually floor() and that this language, like C64 BASIC, does not have a modulo operator, which is why the calculations are more verbose. This is in the 64s 320x200 mode (HIRES!). Currently the fraction (1/7) is hard-coded, as well as the length of the repeating run (7) and the number of iterations (100). 1 HIRES 2 SET HEADING TO 0 3 MOVE TO 80-130 4 PEN DOWN 5 CALCULATE X=0 6 LABEL DRAW 7 FORWARD 50 8 CALCULATE Y=X-(INT(X/7)*7) 9 CALCULATE A=INT((1/7)*(10^Y)) 10 CALCULATE D=36*(A-INT(A/10)*10) 11 TEST IF (D=0) 12 IF TRUE JUMP POSTROT 13 ROTATE LEFT D 14 LABEL POSTROT 15 CALCULATE X=X+1 16 TEST IF (X=100) 17 IF FALSE JUMP DRAW 18 STOP Related: Plotting Pi and Searching for Mona Lisa - Numberphile https://www.youtube.com/watch?v=tkC1HHuuk7c The specific figure I plot is shown beginning at 7m20s: https://www.youtube.com/watch?v=tkC1HHuuk7c&t=7m20s The Plotting of Beautiful Curves (Euler Spirals and Sierpiński Triangles) - Numberphile https://www.youtube.com/watch?v=kMBj2fp52tA The Turtles are Coming! by David Malmberg, pp. 26-28, Commodore Power-Play, 1982, Issue 2, V1, N02, Fall (issuu.com) https://issuu.com/astarothduke/docs/commodore_power-play_1982_issue_02_v1_n02_fall David Malmberg Interview (brasslantern.org) http://brasslantern.org/community/interviews/malmberg-b.html q(D.M.: Sort of. I wrote and published a product for the Commodore-64 and VIC-20 titled TurtleGraphics, which sold approximately 80,000 copies and was translated into French and Spanish. It was actually published by a company called HESware, which I helped found. Turtle Graphics was a LOGO-like language/product designed to teach programming skills to kids from six to sixty.) ANTIC Interview 285 - Jay Balakrishnan, HESWare (audio) https://ataripodcast.libsyn.com/antic-interview-285-jay-balakrishnan-hesware$