- vcf-midatlantic - lists.vcfed.org

Re: [vcf-midatlantic] Sick Laser 128
by william degnan 11 Mar '17

11 Mar '17

Evan, The plan is to start with the big stuff and work from there. Test the voltages, see if anything is way off and obvious, burned out or completely dead (0V). I have found that for me, I have to get the schematic and measure everything on the board, compare with the schematic. I am not an engineer, it takes me 4x as long to figure out what's wrong. Mostly I am persistent and I just keep at it. I get more work done at home than at the workshops, I guess because I have everything here as I like it. B

3 3

Sick Laser 128
by Evan Koblentz 11 Mar '17

11 Mar '17

I used the Laser 128 twice today. It worked fine. Now, there's no start-up beep and it displays junk text. Help! ________________________________ 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

9 14

Live auctions at VCF-East?
by Joseph Oprysko 10 Mar '17

10 Mar '17

Evan, I believe I suggested this idea last year, but I don't recall for sure. One ''event" I'd like to see at VCF-East would be a live auction event. There's often items that are either complete systems, or certain rare items that I know I would rather see performed as an auction as opposed to just 'for sale' in the normal sales room. I don't know if it would be too late to do that now for this year or not. I know I have a number of items I'd rather 'auction' off to either members or visitors to VCF-East. The specifics of the auction would likely be left up to the board to decide. (Lot size, percentage taken by VCF for facilitating the auction, etc.) I know there was times where I heard that 'someone will be selling X item' in the consignment room, only to get over there after getting my tables setup, etc, and see it's already been picked over like a corpse by a buzzard. But by setting a specific time, with a viewing of lots prior to the auction. It gives people a chance to purchase the specific item/lot. Thanks, Joe -- Normal Person: Hey, it seems that you know a lot. Geek: To be honest, it's due to all the surfing I do. Normal Person: So you go surfing? Normal Person: But I don't think that has anything to do with knowing a lot... Geek: I think that's wrong on a fundamental level. Normal Person: Huh? Huh? What?

12 18

Info Needed: DATARAM DR-111 PDP-11 Unibus 16KW Core Memory
by Systems Glitch 09 Mar '17

09 Mar '17

Looking for any information and/or documentation on DATARAM DR-111 (assembly 61101) 16Kx16 core memory boards for the Unibus. I've got four in unknown condition, one with a clearly destroyed 8T37. I have a large format scanner with ADF and can digitize print sets if necessary. Thanks, Jonathan

2 1

Introductions
by Mark Whittington 09 Mar '17

09 Mar '17

Hello, Evan asked me to introduce myself, so here goes! >Looks like that's your first post on the list. Please introduce yourself: how did you find us, where you live, what's your interest in vintage computing, etc. .... thanks! I discovered the list as a result of stumbling across Connor Krukosky's IBM z890 story ( https://www.reddit.com/r/IBM/comments/3relk4/i_just_bought_an_ibm_z890/) That led to the old Yahoo group which led to the current mailing list. I'm 39 and live in the Northern VA area, near Dulles. The first computer I ever touched was a C64 at around 4 years old. The first computer that I ever owned was a TI-99/4a that a neighbor gave me in the late 90's, but by then I'd already discovered the Apple IIe's and IBM PC XT's at the local library. Now I've got a 4 year old daughter and I want to introduce her to computers outside the world of her iPad, so I'm probably going to start her with an Apple II or C64 of her own. I write Python for a living, and in my spare time I like photography, amateur radio and electronics in general. I've got a quadcopter that I built, flew once and crashed and a large R/C helicopter that I've never flown. I'll be at the Northern VA Maker Faire on March 19 at the ham radio table if anyone in the area wants to stop by and say hello. Nice to meet you all. Best, -Mark

5 5

Small Favor for VCFeXII
by Chris Fala 09 Mar '17

09 Mar '17

Does anyone have a Commodore 1551 floppy drive that I can borrow for my exhibit? I probably won't even need to power it up, but would like to have it to complete the timeline. Thanks, Chris

1 0

Re: [vcf-midatlantic] free to a good home 6809 + os/9 books + software
by Michael Kato 09 Mar '17

09 Mar '17

this has been claimed - thank you. ....maki....

1 0

free to a good home 6809 + os/9 books + software
by Michael Kato 08 Mar '17

08 Mar '17

I have the following box of books - Ideally local pickup in Crystal City VA the whole box. I can also ship whole box media mail if you pay for it. Otherwise I'll be selling the books at TCF and Vienna Wireless. Color Computer Graphics - Willam Barden, Jr. LILbug - Monitor for the MC6801L1 - Motorola TRS Color Computer Assembly Language Programming - William Barden, Jr. OS-9 Insights 2nd Ed. - Peter Dibble Complete Rainbow Guide to OS-9 - Dale L. Puckett, Peter Dibble Complete Rainbow Guide to OS-9 Level II Volume I - Dale L. Puckett, Peter Dibble MC6809/MC6809E Microprocessor Programming Manual M6809PM/AD Motorola Programming the 6809 - Rodnay Zaks, William Labiak 6809 Microcomputer Programming & Interfacing with Experiments - Andrew C. Staugaard, Jr. The MC6809 cookbook - Carl D. Warren Two Floppies and Manual for OS-9 Level Two Operating System for Color Computer 3 I've always had deep respect for 6809 and longed to sink my teeth into OS/9, but at the end of the day I'm a Z80 man so I'm going to let this box go to someone else who can enjoy it more than I can. Please email me at the address I'm posting from if you can come pickup the box. I will also be at VCF-E, but will give preference to someone who can pickup ASAP. ....maki....

2 2

Finished code for Lego robot
by Evan Koblentz 08 Mar '17

08 Mar '17

If anyone's interested, here is the finished code for Leinad Legobot. The new 4000 routine detects touch sensors to make the forklift stop at its upper/lower limits, rather than keep moving even though there's no place to go. We couldn't get it working with the optical sensors (various reasons) so I called an audible to switch to the touch sensors. That works much better. Kudos to Dan for perfecting the code behind this. Kudos also to Paul H. for teaching me (several versions ago) what was wrong with my joystick navigation code. Plain text version: http://www.vcfed.org/evan/lego/robot.txt Easy-on-the-eyes version: http://www.vcfed.org/evan/lego/robot.pdf My plan now is bring this to Trenton, exhibit it at Southeast, expand it into a game at Kfest (if I can go), and then make it the centerpiece of the permanent Lego learning station in our museum. I'll make a big kid-friendly flow chart poster to go with that last part. ________________________________ 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

3 4

"Stranger Things" c64 game?
by Christopher Gioconda 08 Mar '17

08 Mar '17

This article made me chuckle, so I had to share: http://games.mxdwn.com/news/some-intrepid-developers-pitched-netflix-on-a-s… Christopher Gioconda cgioconda(a)gmail.com

2 1