test-drb

test-drb@ccmp.vtda.org

101090 discussions

by binarydinosaurs＠gmail.com

Hi folks, For the last few weeks I?ve been helping the owner of a PPG2.2 synthesizer get the ?computer? side of it, a Waveterm A, running. The Waveterm is a 6809-based single board computer running FLEX that was designed to use 8? drives, then at some point they modified it slightly to use 5.25? HD drives instead but changed very little - to connect up to the main board they made a 34-50pin adapter. The drives are YE-Data YD380 with a Shugart interface so without some sort of signal bender like a DBit FDADAP I couldn?t just plug them into a PC. However, the YE-Data YD380B has an IBM interface so we used one of those, same mechanism so we figured it should work. All the disk images for the Waveterm have been created using programs written by PPG users. For some reason any disk we wrote with them wouldn?t read correctly in the machine itself UNTIL we made a new image of that disk using Teledisk 2.15 then re-wrote it back to the same floppy. My question is why should that make so much of a difference between working and non-working disks? Trivia: for anyone aware of the 80s UK Music industry this very machine was used for the hit ?You spin me round (like a record)? by Dead Or Alive. -- adrian/witchy Owner of Binary Dinosaurs, the UK's biggest home computer collection? t: @binarydinosaurs f: facebook.com/binarydinosaurs w: www.binarydinosaurs.co.uk

8 years, 2 months

Weird Lear-Siegler ADM-3A board

by binarydinosaurs＠gmail.com

Hi folks, A friend of mine has said ADM-3A and is baffled by the tiny board it contains, not the usual ?covering entire base? discrete logic board they normally have. Centre of this board is the Nat Semi NS405 ?display processor on a chip? which is obviously why the board is so small but neither of us have seen this before in a 3A. Anyone else? Pic at http://www.binarydinosaurs.co.uk/tonyADM3a.jpg <http://www.binarydinosaurs.co.uk/tonyADM3a.jpg> cheers! -- adrian/witchy Owner of Binary Dinosaurs, the UK's biggest home computer collection? t: @binarydinosaurs f: facebook.com/binarydinosaurs w: www.binarydinosaurs.co.uk

8 years, 2 months

eBay: HP 21MX E-Series Minicomputer 2109B

by jnc＠mercury.lcs.mit.edu

Figure you HP fans will already have seen this, but in case not: https://www.ebay.com/itm/332695779697 Noel

8 years, 2 months

IBM junk

by cctalk＠ibmjunkman.com

4th sentence. Praise the computer gods I found someone that wanted it all.

8 years, 2 months

IBM junk

by cctalk＠ibmjunkman.com

I believe the 1130 used the 2315

8 years, 2 months

IBM junk

by cctalk＠emailtoilet.com

Well, not really. CHM only wants my punched card collection (4000+ cards) which they are getting when I croak. Did not want the other stuff. Livingcomputers only interested in miniatures. I will swear I sent a note to Al Kossow about manuals. No reply.

8 years, 2 months

DEC Mouse replacement

by dj.taylor4＠comcast.net

I would like to have a couple more DEC Mice for some Vaxestations I have, but they seem to be pretty rare.? At present I only have one mouse and I move it from machine to machine. The protocols for the DEC mice and the standard PS/2 mice don't seem to be that much different. Is it possible to use an arduino to translate? PS/2 mouse output and then send it to the vaxstation so that will it mimic a classic DEC mouse?

8 years, 2 months

More tapes - This time all Tektronix 405x series

by mmcgraw74＠gmail.com

I was successfull at capturing all the files from a 4051 Graphics T1 tape last weekend. Here is the link to a couple of photos of the process: Capturing Tektronix 4051 Graphics T1 tape files to laptop <https://drive.google.com/open?id=18hROXB28PD9Z_GYDNNSXGPK4Pv7GQD8w> First I replaced the disintegrated drive belt with one from a NOS 3M DC6250 cartridge. I used my 4051 to PC serial transfer program on my recently repaired and upgraded 4054A. I set the comm speed of the 4054 serial interface to the maximum 9600 baud, but as it is 7-bit, my program changes all 32 Tektronix control characters to "~X~" where X is the ASCII character corresponding to that control character. This way I don't lose any of the Tektronix 405x text formatting in the transfer. I was using ExtraPutty on the laptop to capture the program text strings, then copied the statements into Notepad++ and saved each file. I am also working on a Tektronix 4051/52/54 compatible GPIB MicroSD flash drive that will emulate the Tektronix 4924 tape drive - for all of us with these computers to use - since both the tapes and drives are very problematic after all these years. This flash drive contains an Arduino with my code - based on the GPIB flowcharts and info in a 4051 and 4052 GPIB manual. You will be able to use the existing 405x program statements with @Y for the drive GPIB address - since I don't know how to write a ROMPACK for any of the series :) I plan to organize the different captured tapes in directories on the flash - and that may mean using a non-4924 GPIB secondary address for that command. It also likely means I need to change any tape commands in each program to use the flash drive GPIB address. That's why I wanted to capture one of the Tektronix tapes with a menu - is to ensure I could get those files to work on my flash drive design. Monty McGraw

8 years, 2 months

New Listings for Sellam's VWoCW - June 20, 2018

by sellam.ismail＠gmail.com

Hello Folks, More stuff! New listings for June 20, 2018 Beck-Tech C64 ROM Emulator 80486 Multi-Master Card H214 8Kx16 Planar Core Memory M7504 DEQNA Ethernet Controller VS40X 4 Plane Color Option Bit Boffer BB-1 Ricoh V20 MMI Development PCB EXT 01 slot extender board Diablo Systems RGEXT slot extender board Mystery Memory Board Lexar 48K Memory Expansion Board National Semiconductor COP402N Processor I/O Board National Semiconductor COP402N Processor I/O Board National Semiconductor 8080 Processor Board Set Quantum Q2030 hard drive logic board Anderson Jacobson ADAC 1200 Acoustically Coupled Modem IEV Corp. VIP-2000 InfoChip Systems 13-000025 Compression Coprocessor Board International TeleText Communications PC TeleText Decoder Generic Network Card Gould K-20 Logic Analyzer Tektronix C-5A Oscilloscope Camera List with links to individual items is here: https://docs.google.com/spreadsheets/d/1I53wxarLHlNmlPVf_HJ5oMKuab4zrApI_hi… (Please note: the links get screwy as I add/delete items because they are not anchored to the actual item but to the cell range, still trying to work on a fix for this. If you link to an item and it's just not there it means it has sold.) Instructions, FAQ, everything is at the link above. E-mail directly for any questions. Thanks! Sellam

8 years, 2 months

New Listings for Sellam's Collection Sales

by sellam.ismail＠gmail.com

Hi Folks. I've reorganized my sales listings into a Google Sheets set. The introductory page is here: https://docs.google.com/spreadsheets/d/1I53wxarLHlNmlPVf_HJ5oMKuab4zrApI_hi… Use the tabs on the bottom of the sheet to navigate to the various "rooms". New items have been added and are listed here: https://docs.google.com/spreadsheets/d/1I53wxarLHlNmlPVf_HJ5oMKuab4zrApI_hi… New items are always added to the New Arrivals Niche, so that's the first place you should check when you visit my virtual online warehouse. I will post a message to this list and the VCFed forums whenever new items are listed, which will occur more regularly. As always, please inquire directly to me via e-mail for the fastest response. Thanks! Sellam

8 years, 2 months

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