- cctalk - classiccmp.org

by Cameron Kaiser

Odd fault on my Rev D KIM-1 popped up while writing code this afternoon (initially I thought I had a bug in my paper tape transmitter) - between $0280 and $029f, the upper 5 bits are stuck at zero. The rest of the address range seems fine. In particular, $0080-$009f, $0180-$019f and $0380-$039f work correctly. This doesn't smell like a bad RAM chip to me or I would think there would be a bad bit throughout the entire 1K, so I suspect this is a data bus problem but I'm not sure where to start looking. Any guesses from the group? -- ------------------------------------ personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser(a)floodgap.com -- require "std_disclaimer.pl"; -----------------------------------------------

3 years, 2 months

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Altair 8800 question

by Mike Douglas

I have a reproduction of the metal nameplate strip that looks very close to the original if you want one. $10 plus shipping. Mike D

3 years, 2 months

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Did Intel's Insite User Program Library survive?

by Veit, Holger

Hi all, The PDF at https://www.bitsavers.org/pdf/intel/insite/1983_Insite_Users_Program_Librar… lists various old user submitted software which could have been ordered from Intel those days. Is there anything of that archived and downloadable somewhere? Regards Holger

3 years, 2 months

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OT: A list member in Japan?

by William Sudbrink

Is there a list member in Japan or soon traveling to Japan? I want to acquire something (not really vintage computer related) and the seller does not take paypal and I can't get funds to them. Thanks, Bill Sudbrink -- This email has been checked for viruses by Avast antivirus software. www.avast.com

3 years, 2 months

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Altair 8800 question

by W2HX

I see some altairs have a metal escutcheon on the bottom with the stylized words "MITS ALTAIR 8800 COMPUTER" whereas others, the front panel is just the dark faceplate top to bottom. What is the difference? Would one have been a kit and the other sold fully assembled? Or maybe later units vs earlier units? 73 Eugene W2HX Check out my Youtube Channel: https://www.youtube.com/@w2hx/videos

3 years, 2 months

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Kennett Classic May 20th hack-a-thon and Swap

by Bill Degnan

Kennett Classic May 20th hack-a-thon and Swap May 20th, 2023 | 9AM – 11PM 115 S. Union St. Kennett Square, PA (Hack-a-thon is in our large workspace "The Garage" across the street from the museum) Plenty of room for everyone, tables, chairs and power supplied. REGISTER NOW TO ENSURE YOUR SPACE Here is the URL for the EVENT REGISTRATION: https://www.kennettclassic.com/spring-hack-a-thon-may-20th-2023/ $5 / person (family) $10 / vendor Kids free. HACK-A-THON Any vintage computers (older than 20 years) you wish to restore, demo or sell during the day Hacking? Bring Your Tools (power strip, soldering irons, volt meters, screw drivers, spare parts) Dolly or cart to bring items in from the parking lot area. VENDORS Spaces for people who want to sell their items or exhibit/demo their projects. EXHIBITORS / DEMOS welcome! GENERAL PUBLIC There will be a pretty steady stream of visitors from the local community too. We have a growing vintage computing community in the South Eastern PA / North Delaware / North MD area. Saturdays are usually the busiest days at the museum, and downtown in Kennett. The museum will be open as usual for a Saturday, 12-5. Visit our event page for more details, contact, directions https://www.kennettclassic.com/spring-hack-a-thon-may-20th-2023/ EVENT MAILING LIST https://www.kennettclassic.com/contact.cfm Bring the Family! Things to do in Kennett Square https://www.kennettclassic.com/while-at-kennett-classic-food/ We're Nearby Longwood Gardens https://www.longwoodgardens.org Thank you. Bill Degnan Kennett Classic 484 732 741 https://www.kennettclassic.com Facebook Group: https://www.facebook.com/groups/6130337163716721

3 years, 2 months

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do you have any western electric 498a diodes or know where I can get? Thanks ed sharpe

by ED SHARPE

do you have any western electric 498a diodes or know where I can get? Thanks ed sharpe Sent from AOL on Android

3 years, 2 months

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Current Loop Schematics

by Jonathan Katz

Hi everyone! I'm working on a project where I need to build an RS-232 to Current Loop adapter. I've seen some schematics on-line and the parts list seems pretty small, but does anyone have a specific set of instructions and schematics that they trust? Or does anyone in the UK have a spare adapter they'd like to send me? :D Thanks! -- -Jon +44 7792 149029

3 years, 2 months

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Re: Current Loop Schematics

by Mike Douglas

If it’s specifically to interface to a model 33 Teletype, here’s a design that works well and is pretty simple. https://altairclone.com/teletype.html Mike

3 years, 2 months

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3D Printing

by Bill Gunshannon

Are there any 3D printing experts hanging around here? I need help. I want to print things like a bracket to mount my FreHD in a disk bay. Some other things, too. The problem is the STL file wants to print these items vertically instead of laying flat on the table. Needless to say by the time it gets to the part where it wants to print the faceplate the object is unstable or, in some cases, completely tipped over. Is there any way to change the orientation of an object on the table using just the STL file? I have a Creality Ender 3 printer and their slicer software. bill

3 years, 2 months

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