July 2017 - vcf-midatlantic

Re: [vcf-midatlantic] Woohoo!
by VAXman＠tmesis.org 30 Jul '17

30 Jul '17

Glenn Roberts via vcf-midatlantic writes: >I hate to be the bearer of bad news but assembly language is probably >the most tedious of programming environments. That's not necessarily true. It depends upon the machine (CPU) and its language (instructions, address modes, registers, conventions, etc.). >Good assembly language programmers have libraries of frequently needed >routines (e.g. to print text or do = 16 bit manipulations). Perhaps. >I have not programmed the Apple but on Heathkit machines there are many >such useful routines embedded in the machine's ROMs (I'm sure that's true >for Apple too). I/O routines, unless one is writing the I/O subsystem and device drivers, should be part of the OS or, in lesser systems, ROM, Bios, etc. Inventing the wheel everytime you want to roll is not very productive.

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Retrobrite instructions from the master
by Evan Koblentz 29 Jul '17

29 Jul '17

Javier Rivera is widely considered the master of Retrobrite. Here's a video (not mine) of him demonstrating the method at Kfest last week. DO try this at home. :) Be sure to FOLLOW THE DETAILS EXACTLY. https://www.youtube.com/watch?v=aFGS9xaaO_M ________________________________ Evan Koblentz, director Vintage Computer Federation a 501(c)(3) educational non-profit evan(a)vcfed.org (646) 546-9999 www.vcfed.org facebook.com/vcfederation twitter.com/vcfederation instagram.com/vcfederation

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Museum report
by Evan Koblentz 29 Jul '17

29 Jul '17

Short and solid: lots of visitors today. Afterward I went into the warehouse and cleared one more pallet of random items. Martin dropped off parts for connecting the new motor-generator to the Univac.

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Re: [vcf-midatlantic] August 2017 Workshop Final Reminder August 12& 13
by Neil Cherry 29 Jul '17

29 Jul '17

On 07/29/2017 02:31 PM, William Dromgoole via vcf-midatlantic wrote: > I guess its more windows 10 magic. > > If I cut and paste it to the browser it works. > If I click on it it goes to some google type of page. Not Windows magic but rather line break in the link: Signup here: : https://docs.google.com/spreadsheets/d/1BJNQloAe-g_ ZtSvnkayNCCAy3SfYUMScgviOikcXnuY/edit?usp=sharing I see that as 2 lines (Thunderbird only gets half to click). <get off my lawn> When I was a kid, we'd have to run a script to filter that out and automatically run the browser from a shell ... </get off my lawn> ;-) -- Linux Home Automation Neil Cherry ncherry(a)linuxha.com http://www.linuxha.com/ Main site http://linuxha.blogspot.com/ My HA Blog Author of: Linux Smart Homes For Dummies

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Re: [vcf-midatlantic] August 2017 Workshop Final Reminder August 12 & 13
by Evan Koblentz 29 Jul '17

29 Jul '17

>> Link doesn’t work for me. Works fine for me. ________________________ Evan Koblentz, director Vintage Computer Federation A 501(c)(3) educational non-profit Evan(a)vcfed.org +1 (646) 546-9999 www.vcfed.org facebook.com/vcfederation instagram.com/vcfederation twitter.com/vcfederation

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Warehouse shelving
by Evan Koblentz 29 Jul '17

29 Jul '17

Everyone, We need more warehouse shelving. Don and I used the last shelf yesterday. The good news is, our warehouse is looking GREAT now. It's the cleanest and safest we've ever seen in there. The bad news is some things are still piled onto pallets, or worse: on the floor. The units we get cost $100 each, however, first we'll buy individual parts to make complete units from our current supply of extra poles/wheels. Please click here if you can help: http://vcfed.org/wp/contribute/ As always, contributions to VCFed are tax-deductible. Thanks, Evan ________________________ Evan Koblentz, director Vintage Computer Federation A 501(c)(3) educational non-profit Evan(a)vcfed.org +1 (646) 546-9999 www.vcfed.org facebook.com/vcfederation instagram.com/vcfederation twitter.com/vcfederation

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August 2017 Workshop Final Reminder August 12 & 13
by Jeffrey Brace 29 Jul '17

29 Jul '17

Last reminder for August workshop. If we don't get enough signed up in a few days, then I'm moving it to the smaller room. The date is August 12 & 13. InfoAge fee is $10 per day for the workshop. Overnight stay is $25 per night. Please sign up now so that I can make sure there is enough room. Otherwise we will put late signups into the far corner of the big room away from everyone facing the wall. And you must wear an aluminum foil hat the whole weekend. Signup here: : https://docs.google.com/spreadsheets/d/1BJNQloAe-g_ ZtSvnkayNCCAy3SfYUMScgviOikcXnuY/edit?usp=sharing -- ======================================================== Jeff Brace ========================================================

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Re: Digest, Vol 21, Issue 26 Msg # 6 Motor Controller
by SVCatITC＠aol.com 29 Jul '17

29 Jul '17

Just one more note on motor controllers. Wikipedia has a nice discussion on these things ranging from the simple to the complex. https://en.wikipedia.org/wiki/Motor_controller If you click on the "contactor" link, there is a good representation pix of a common contactor, something similar to what Bill D. might have purchased. I'll shut up now unless others may want to continue the discussion on this topic. Bill Inderrieden In a message dated 7/29/2017 12:30:37 A.M. Eastern Daylight Time, SVCatITC(a)aol.com writes: A motor controller, above 1 hp, and usually used on a 3 ph line, is a glorified relay. It however has, added features of thermal cutouts on each of the phases on the load side of the relay. It's normal electrical name is a contactor. The actuating coil is usually 120 VAC, however it can be in special cases 24 VAC or 24 VDC. Some of the reasons it is used is: 1. To start all 3 phases at the same time to the motor. 2. Provide (in some cases) a local START / STOP pushbutton station. 3. Provide trip protection in case of overload or stall of the motor. 4. Allow remote START / STOP capabilities / facilities. They are usually big and bulky because the contacts are rated to handle the high horsepower inductive current ratings. They also must make and break the circuit quickly to quench the arc over so as not to weld the contacts together. More questions about this topic are welcome. Bill Inderrieden In a message dated 7/28/2017 12:16:23 P.M. Eastern Daylight Time, vcf-midatlantic-request(a)lists.vintagecomputerfederation.org writes: Message: 6 Date: Thu, 27 Jul 2017 19:14:27 -0400 From: Evan Koblentz <evan(a)vcfed.org> To: Vcf <vcf-midatlantic(a)lists.vintagecomputerfederation.org> Subject: Re: [vcf-midatlantic] Museum power / Running bigger machines Message-ID: <11095b74-0b91-4f41-9828-84e6b181650c(a)vcfed.org> Content-Type: text/plain; charset=UTF-8 >> Maybe Martin will provide one to us but I didn?t ask. I found one on Amazon for $142.00 https://www.amazon.com/Starter-definite-magnetic-Square-8911dpsg23v09/dp/B00 GGPZ9P4 Well you just posted on the public list which he reads, too. :) Anyway: what's a magnetic motor controller?

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Re: Digest, Vol 21, Issue 26 Msg # 6 Motor Controller
by SVCatITC＠aol.com 28 Jul '17

28 Jul '17

A motor controller, above 1 hp, and usually used on a 3 ph line, is a glorified relay. It however has, added features of thermal cutouts on each of the phases on the load side of the relay. It's normal electrical name is a contactor. The actuating coil is usually 120 VAC, however it can be in special cases 24 VAC or 24 VDC. Some of the reasons it is used is: 1. To start all 3 phases at the same time to the motor. 2. Provide (in some cases) a local START / STOP pushbutton station. 3. Provide trip protection in case of overload or stall of the motor. 4. Allow remote START / STOP capabilities / facilities. They are usually big and bulky because the contacts are rated to handle the high horsepower inductive current ratings. They also must make and break the circuit quickly to quench the arc over so as not to weld the contacts together. More questions about this topic are welcome. Bill Inderrieden In a message dated 7/28/2017 12:16:23 P.M. Eastern Daylight Time, vcf-midatlantic-request(a)lists.vintagecomputerfederation.org writes: Message: 6 Date: Thu, 27 Jul 2017 19:14:27 -0400 From: Evan Koblentz <evan(a)vcfed.org> To: Vcf <vcf-midatlantic(a)lists.vintagecomputerfederation.org> Subject: Re: [vcf-midatlantic] Museum power / Running bigger machines Message-ID: <11095b74-0b91-4f41-9828-84e6b181650c(a)vcfed.org> Content-Type: text/plain; charset=UTF-8 >> Maybe Martin will provide one to us but I didn?t ask. I found one on Amazon for $142.00 https://www.amazon.com/Starter-definite-magnetic-Square-8911dpsg23v09/dp/B00 GGPZ9P4 Well you just posted on the public list which he reads, too. :) Anyway: what's a magnetic motor controller?

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VCF West, Got my flight, Room and Car
by Christian Liendo 28 Jul '17

28 Jul '17

I got my flight, Room and Car. So I guess I will see who will be there.

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