I've been working away at my ImageDisk utility, and have made a number
of fixes, including some corrections to the sides/stepping detect logic
which failed to properly detect some mixed density disks.
I have added several new features, including improvements to the
"Align/Test" function, and the ability to translate the data rates
(This lets you do things like recreate DD disks read on DD drives on HD
drives and vice-versa).
This evening I finally wired up a cable to connect a double-sided 8"
drive to my PC, and was very pleased to see that I was able to backup and
restore several mixed density 8" disks with no problems - even a double
backup and restore (backup of backup then restore) still matched the
original and booted correctly.
I have also created a first cut at my "Analyze/Merge" utility, this is
a companion utility which:
- Provides a detailed report of the track/sector layout and data formats
occuring in the diskette image.
- Can perform a logical sector by sector compare of two disk images, even
if the binary layout is not exactly the same (usually due to different
comment or problems detecting interleave).
- Can merge two images into one, allowing you to take advantage of the fact
that some PC's may read different sectors than others (one of my machines
refuses to read the first sector on Cromemco disks while a second machine
fails to read the last sector) - and create a complete image by merging
them.
It's late and I'm going to bed - in the morning, I will transmit the updated
software to the people who already requested and received the first version (If
you don't want to receive any more updates, please let me know). If anyone else
wants to join in the fun, please drop me a line and I'll add you to my list.
Regards,
Dave
--
dave04a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Collector of vintage computing equipment:
http://www.parse.com/~ddunfield/museum/index.html
Anybody knows something about its history ??
I have installation disks with files dated 6/1990 and also a boot disk
with some files dated in 2/1991, I know that several bug fixing
versions exist, but Which is the last ??
I remembered it when I was reading all that Windows Vista (LongHorn)
stuff. Seems that M$ is using 'vaporware' again to distract attention
>from Intel Mac OS X much like they did with MS-DOS 5.0 and DR DOS 5.0.
______________________________________________
Renovamos el Correo Yahoo!
Nuevos servicios, m?s seguridad
http://correo.yahoo.es
>
>Subject: Memory board info needed
> From: "Richard A. Cini" <rcini at optonline.net>
> Date: Wed, 27 Jul 2005 22:33:31 -0400
> To: CCTalk <cctalk at classiccmp.org>
>
>All:
>
> I'm stocking-up on high-density S100 memory boards (to reduce heat
>in my Altair) and I just bought an SC Digital 16KUS memory board. It appears
>to be a 16kx4 board but it has some bank switch DIP switches on it.
>
> Does anyone have a manual or schematic for this board? Thanks.
>
I'd suggest something more like a Compupro RAM16 or RAM17, there are many
similar to those. What are they? Those are the 64k board using 2116 (2kx8)
rams. Low power, cooler and less trouble in the altair (bus noise and cooling).
Allison
All:
I'm stocking-up on high-density S100 memory boards (to reduce heat
in my Altair) and I just bought an SC Digital 16KUS memory board. It appears
to be a 16kx4 board but it has some bank switch DIP switches on it.
Does anyone have a manual or schematic for this board? Thanks.
Rich
Rich Cini
Collector of classic computers
Build Master for the Altair32 Emulation Project
Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/
/************************************************************/
>From: "Vintage Computer Festival" <vcf at siconic.com>
>
>On Wed, 27 Jul 2005, William Donzelli wrote:
>
>> > Hint: Software and manuals can be shipped CHEAP using USPS bookrate.
>>
>> Be very careful - USPS is getting VERY strict about the use of Media
>> Rate and Printed Bound Matter Rate. Most people use Media Rate for any
>> printed matter, but by law, any document that shows even a hint of
>> advertising or personal correspondence, even if from a 50 year old catalog
>> from a firm that no longer exists and written by someone now dead, can NOT
>> go Media Rate. Period. No Slack.
>
>Software is included in the Media Rate.
>
---snip---
Hi
It is interesting that even a note attached to a pile
of documents can cause it to fail the media rate rule.
I have a stack, about 15 lbs, of copies that I wanted
to send and I had a note on top that said" Here are the
items you requested" or something similar. The postal
fellow saw that and was going to reject the media rate
based on that. I just removed the note.
It is funny that the note contained nothing more than
what an invoice would have. I guess rules are rules.
Dwight
Hi All,
Doing a little sorting. The following items are free , plus the cost of
shipping rounded to the next dollar. I'm in southwest Michigan.
-OS/2 Warp 3 Connect Red label (in box, good condition)
-Windows NT 3.51 (in box, good condition)
-Windows for Workgroups 3.11 (in box, good condition)
-WordPerfect 6.0 for DOS (in box, ok condition)
-WordPerfect 6.0 for Windows (in box, ok condition)
-Symantec The Norton Utilities (Windows/DOS) Version 8 (in box, ok
condition)
-Kickstart 1 (power-on self-test diagnostic card) for IBM PC, XT, AT,
and compatibles (in box, good condition)
-Microsolutions "backpack" parallel port cd-rom (given to me, I didn't
try too hard to make it work on my IBM Model 80..... it didn't go, but
Reply board in the Model 80 can be a bit fussy)
-Hayes Products joy stick for the IBM PC (in box, good condition)
-Adaptec AHA-2744W Differential SCSI adapter (in shipping box, ok condition)
-Wordstar .... seems to be 5.5 and 5 Professional.... lots of disks,
and manual (in box, good condition)
More to come later......
Chad Fernandez
Michigan, USA
Hi
I'm just a little curious. There is a pile of boards
on ebay that I'm wondering what they might go to. They
seem to have ecl parts but I'm not all that familiar
with them to tell. I was wondering what machine these
might come from?
item 5224152751
Dwight
OK... I've just about had it with this ancient B&C Microsystems UP600a
- it _claims_ to support Atmel 22V10s, but I'm having no luck with
that. It also seems to be unhappy with some modern JEDEC files -
claming checksum errors and what not (on files generated and tested
moments before from .PLD files). It does OK with Lattice 22V10s and
AMD PALCE devices, as well as most 27(C)64s and larger, but it's
getting harder and harder to find old GALs.
So... I guess I have to find something new(er). Whatever replaces
this will need to be able to program EPROMs down to 2732s at least
(which should include 2716s), and 16V8 and 22V10 GALs. I'd say that
accounts for 95% of what I need to burn (if I have to burn a bipolar
PROM, I have ancient devices for just that task).
So what device programmers do people here have that they'd recommend?
I already have a dedicated PC attached to my current programmer, so I
guess it doesn't matter what a replacement programmer needs to talk to
- I'm already committed to supporting whatever box it needs to have
(annoying as that is).
Thanks for any recommendations,
-ethan
