test-drb March 2011

test-drb@ccmp.vtda.org

146 participants
225 discussions

by david＠classiccomputing.com

> Eric writes: >> Issue #3 is unfortunately the final issue. >> You can now get PDF files of issues 1 through 3 from their web site: >> http://www.300baudmagazine.com/ > > And I never knew it existed until now :-(. > > The enthusiastic attitude and WIDE pop-culture-artifact orientation > reminds me a lot of CHAC newsletters (did they/Kip Crosby do anything > past the mid-90's?) > > Tim. Ahhhhh, it doesn't remind you of my little publication at all? http://www.classiccomputing.com/hb.html Kip's web page stopped updating around 1997 and I haven't spoken with him in detail about what happened. I'm trying to get an interview going with him. He went on to co-author a book about Windows 98 and I don't know after that - http://www.amazon.com/Windows-1998-Bible-Frederic-Davis/dp/0201696908/ref=s… Best, David Greelish, Computer Historian Classic Computing The Home of Computer History Nostalgia http://www.classiccomputing.com Classic Computing Blog Classic Computing Show video podcast "Stan Veit's History of the Personal Computer" audiobook podcast Retro Computing Roundtable podcast Historical Computer Society

13 years, 9 months

Looking for an Apple Profile hard drive - dead or alive

by ian_primus＠yahoo.com

Does anyone have an Apple Profile drive they aren't using? I have need for one. Does not need to work. Thanks! -Ian

13 years, 9 months

VCF East flier is available

by evan＠snarc.net

Here's the link: http://www.snarc.net/vcfe7flier.pdf .... please share widely! - Evan

13 years, 9 months

Pacific Educational Systems VPU-1 External Voice Synth

by mbbrutman-cctalk＠brutman.com

This is an external voice synthesis box based on an Intel 8031 micro-controller and a TSP5220CNL synthesis chip. It has an RS232 interface, volume and tone knobs, a headphone jack and an RCA jack for external audio. Does anybody remember these things and how to talk to them? I've tried all of the various bps rate and parity combinations from 300 to 19200 and I can't get anything response (data or sound). Thanks, Mike

13 years, 9 months

Free: Stack of Victor or Sirius floppy disks

by les＠frii.com

The Victor 9000 had a variable spindle speed, I cant remember if the drive spun faster on the inside or outside tracks. Also, the index hole detector was not used. Many of the drives did not have a index detector, on the drives that did have an index hole sensor, it worked just as well without it plugged in. I got in a argument about the ability to use hard sectored floppies in the Victor 9000 with a Victor sales rep once. Even after I showed him that the index detector was not connected, he still didn't believe me. Les

13 years, 9 months

Reordering S-100 PCBs

by lynchaj＠yahoo.com

Hi! I am putting together the next set of S-100 PCB reorders for the S-100 hobbyist group. The two boards I would like to order next are the S-100 EPROM and S-100 IO boards. So far, I have eight builders on the waiting list for the S-100 Flash/EEPROM/EPROM/SRAM board http://s100computers.com/My%20System%20Pages/PROM%20Board/PROM%20Board.htm I have eleven builders on the waiting list for the S-100 Serial IO (with USB and Speech Synthesis) http://s100computers.com/My%20System%20Pages/Serial%20IO%20Board/Serial%20IO %20Board.htm I need about reasonably firm 20 builders on the waiting list to warrant a PCB reorder. Both of these boards are going to be respins to correct any issues from the original boards. They are useful in any S-100 system and offer full IEEE-696 compatibility. Please contact me by email LYNCHAJ at YAHOO.COM if interested in either or both boards. They will be $20 each plus $3 shipping in the US and $6 elsewhere as per usual arrangement. I will combine shipping on multiple boards to reduce shipping depending on weight. Thanks and have a nice day! Andrew Lynch

13 years, 9 months

TG43 signal and 8" drives on commodity hardware (was Re: WTD: 8-inch floppy drive)

by ethan.dicks＠gmail.com

On Wed, Mar 2, 2011 at 1:52 PM, Tony Duell <ard at p850ug1.demon.co.uk> wrote: > One other nice featuroe of these drives is a slotted optoswtich near the > head carrarriage that changes state at cylinder 43. This is used (I think > it's a jumper-selected option) to reduce the write current, so you don't > need to provide the TG43 signal from the controller. Very handy if you're > using them with a PC/AT controller ;-) I know it's easy to generate this signal with an inexpensive microcontroller, but I'm curious what drives have this feature. I have a TM848 (can't remember if it's -1 or -2 - I'd probably have to pull it from the Dataram Qbus chassis it's in to check, but since it's meant to emulate an RX02, it's *probably* a TM848-1) that I was planning on rigging to a PC-class machine at some point to image my pile of RX01 and box of CP/M 8" floppies. Of course with all the DEC gear I have, I might as well look into using vtserver to pull down RX01 _and_ RX02 images from a real RX02 drive, but I still have plans to build a PC-based multi-media floppy imaging box, so I'm keeping my eye out for a preferred model of 8" drive for that purpose. So far, I really only know a little bit about the SA800s and the TM848s (and the Calcomps used in RX01s and RX02s, but I'm not likely to hang one of those off of a PC). Anyone have any recommendations for good drives to use with PCs? -ethan

13 years, 9 months

6805 equipment pulls

by legalize＠xmission.com

Hi, A neighbouring hacker space has access to some Motorola 6805 equipment pulls. These are 6800s with some amount of on-chip RAM, ROM and IO. I have no idea what the ROM might contain or if you can circumvent the ROM with your own code in off-chip RAM. They don't have any plans for these chips. If you are familiar with them, we'd like to learn more about them. If you need some for your project, just let me know. -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/> Legalize Adulthood! <http://legalizeadulthood.wordpress.com>

13 years, 9 months

WTD: 8-inch floppy drive

by nico＠Farumdata.dk

---------- Original Message ---------------------------------- From: "MikeS" <dm561 at torfree.net> Reply-To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Date: Wed, 2 Mar 2011 12:32:05 -0500 >> Date: Tue, 01 Mar 2011 14:50:19 -0800 >> From: Geoffrey Reed <geoffr at zipcon.net> >> Subject: Re: WTD: 8-inch floppy drive >> >> IIRC the tandon TM-848-2 drives use 24VDC motors... I always liked them >> better than the shugart drives. >> > >Me too! > >Note that the earlier TM-848s used a belt drive, whereas the 848-2 is direct >drive (all 24VDC of course). > >m > What is a typical sales price for a functioning 8" drive? I have some YE data YD180 "surplus to requirements". They run on +5 and +24 VDC. The power connect looks like the connects on 3.5" floppies, about double width. All drives are DSDD

13 years, 9 months

Historical Mainframe Security Docs Available

by lee_courtney＠acm.org

Hi all, I'm cleaning out my library and have the following set of IBM mainframe security documentation free for 20lbs shipping from 94025. Sorry, all or nothing - I only want to make one trip to ship these. These manuals cover the period from early to late-1980s. They go to the first person to accept the lot. Will get recycled if not claimed by 2/2. Have already offered to Bitsavers, and have scanned in case Al wants later. Lee Courtney lee_courtney at acm.org Auditing Top Secret Overview MVS Secured using CA-ACF2 RACF Overview MAJOR COMPONENTS OF AN ACF2-PROTECTED SYSTEM ACF2 Training Class Access Control Facility Auditor's Guide Access Control Facility IMPLEMENTATION PLANNING GUIDE The Access Control Facility General Information Manual The Access Control Facility Overview Access Control Facility UTILITIES MANUAL ACF2 Composite Index ACF2 Release 4 Enhancement Summary The Access Control Facility Administrators Guide VM Secure Users Guide VM CMS User Guide and Reference Manual VMSECURE Quick Reference ACF2 Reporting System Reference Card CA-ACF2 Audit Overview What About VM Security VM Software Fee Schedule VM Software Newsletter AUTOMATING THE AUDIT OF RACF PROFILES CONSUL Mainframe Security Overview CONSUL RACF Sample Output CONSUL RACF User Reference Manual BoKS Administration BoKs Release Notes and Getting Started Guide

13 years, 9 months

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test-drb March 2011