> On Apr 19, 2018, at 8:55 PM, Chuck Guzis via cctalk
> wrote:
>
> On 04/19/2018 07:56 PM, Guy Sotomayor Jr wrote:
>
>> As to why IBM entered the PC market, the rumor was (at least at the time
>> within IBM) was that T.J. Watson, Jr. was at an employee’s house and saw
>> an Apple II. He said
I just got one of these and wanted to configure it via the 10 pin RS232
port on the board.
Is the port a standard DLV11-J type?
I have one of those D-bit DLV11-J to DB25 adapters but not getting any
response.
Any info on the few jumpers on the board?
Doug
On 04/19/2018 07:56 PM, Guy Sotomayor Jr wrote:
> As to why IBM entered the PC market, the rumor was (at least at the time
> within IBM) was that T.J. Watson, Jr. was at an employee’s house and saw
> an Apple II. He said that he wanted to have IBM branded computers in IBM
> employees homes. That
> On Apr 19, 2018, at 4:16 PM, Chuck Guzis via cctalk
> wrote:
>
> On 04/19/2018 12:14 PM, Fred Cisin via cctalk wrote:
>
>> I have no difficulty admitting that I didn't, and don't, have
>> Chuck's level of experience and knowledge. My entire venture into
>> microcomputers was a hobby that got
On 04/19/2018 05:33 PM, Jim Brain via cctalk wrote:
> Someday, the products and software designed and built by the folks in
> this list will be judged by those who follow us. Possibly the rest of
> you have worked in industries where you were allowed to use new
> solutions, you had ample time to
On 4/19/2018 6:16 PM, Chuck Guzis via cctalk wrote:
So, at the time, looking at the 5150, it was an overpriced primitive
implementation using a 1970s CPU. Many people at the time thought it
would be less popular than the 5100.
While I won't argue the technical merits of your position, I feel li
I have no difficulty admitting that I didn't, and don't, have
Chuck's level of experience and knowledge. My entire venture into
microcomputers was a hobby that got out of hand.
On Thu, 19 Apr 2018, Chuck Guzis via cctalk wrote:
It's not so much expertise, but where you start your investigations
Chuck Guzis pointed out that the PC was built from 8 bit peripheral
chips, which was where the 64KB problem came from.
When I saw the design, I thought it was really cute how they were able
to use one of the timer channels and one of the DMA channels to
implement a DRAM refresh circuit almost "for
> On Apr 19, 2018, at 9:19 AM, Eric Smith via cctalk
> wrote:
>
> For the 1802, I've used a really crude disassembler written in C. The 1802
> instruction set isn't very complicated, so a disassembler for it isn't
> either. It's been so many years since I actually disassembled 1802 code
> that
On 04/19/2018 12:14 PM, Fred Cisin via cctalk wrote:
> I have no difficulty admitting that I didn't, and don't, have
> Chuck's level of experience and knowledge. My entire venture into
> microcomputers was a hobby that got out of hand.
It's not so much expertise, but where you start your investiga
On Wed, Apr 18, 2018 at 8:17 PM, Mark J. Blair via cctech <
cct...@classiccmp.org> wrote:
> Some of the future reverse engineering projects I have on my to-do list
> involve the CDP1802 processor, which IDA presently doesn't support. When I
> get to them I'll have to decide whether to use dismantl
what happened to the dec thing with the butterfly discs never heard back I need
it for museum thanks cindy ed
These have now been claimed.
Thanks everybody!
Sean I need an address please!
Cindy Croxton
Electronics Plus
1613 Water Street
Kerrville, TX 78028
830-370-3239 cell
sa...@elecplus.com
AOL IM elcpls
---
This email has been checked for viruses by Avast antivirus software.
https:/
On Thu, Apr 19, 2018 at 1:45 PM, Dennis Boone via cctalk <
cctalk@classiccmp.org> wrote:
> > Based on what I find in format83.c, this shouldn't be too much
> > trouble, but I really want to know what "Intel HEX 83" is supposed to
> > mean.
>
> The easily findable specification document for "int
> Based on what I find in format83.c, this shouldn't be too much
> trouble, but I really want to know what "Intel HEX 83" is supposed to
> mean.
The easily findable specification document for "intel hex", which has
intel branding and copyright, is revision A and dated 1988, so perhaps
"83" is a
On Wed, Apr 18, 2018 at 06:32:59PM -0600, ben via cctalk wrote:
> On 4/18/2018 4:47 PM, Eric Smith via cctalk wrote:
>> On Tue, Apr 17, 2018 at 8:18 PM, Fred Cisin via cctalk
>> wrote:
>>> thousands of movies and TV episodes will fit on a 2TB drive. I am anxiously
>>> awaiting higher capacity thin
I have many cases of SAMS facts schematics and other repair manuals for
everything from stereos, tube TVs, ham radios, turntables, etc. Most apply
to equip from the 60s and 70s or maybe a little earlier. Free to a good home
or they go in the recycle bucket tomorrow.
Cindy Croxton
Electronics P
Yes, it was a "beginner" mistake to not already know that the DMA couldn't
span a 64K boundary.
It is obvious. Once you've already run into it.
I have no difficulty admitting that I didn't, and don't, have Chuck's
level of experience and knowledge.
My entire venture into microcomputers was a
I'm trying to understand various hex formats so I can add them as output
options to minipro[1]. I went looking for existing code to convert binary
to Intel hex and found repeated copies and references to "format83.c" by
Erik Lindberg. It seems to do what I want, but I'm unclear what "Intel
On 19 April 2018 at 17:37, Liam Proven wrote:
>
> I don't know when a word stops being new, but that one is a good 35 years old:
>
> https://en.wikipedia.org/wiki/Heisenbug
(But saying that, I like it, too. Even as a rookie programmer around
the time it was defined, in my trivial programs, I'd se
On 19 April 2018 at 13:27, Noel Chiappa via cctalk
wrote:
> > From: Charles Anthony
>
> > discovered that changing the executable would change the behavior -- a
> > heisenbug.
>
> Ooh, love that neologism.
I don't know when a word stops being new, but that one is a good 35 years old:
On Wed, Apr 18, 2018 at 9:20 PM, Fred Cisin via cctalk <
cctalk@classiccmp.org> wrote:
>
>>>
> You certainly did the right thing, narrowing it down to load address. The
> final conclusion would have been to systematically try many/all load
> addresses, and see whether it was consistent for given
On 4/19/2018 2:54 AM, Wouter de Waal via cctech wrote:
Hi all
I have a TRS-80 Model 2000 B/W Graphics board and a TRS-80 Card Cage
kit (upgrade model 12 to model 16B)
Are either of these worth shipping from the antipodes to anyone?
W
Hmm, I guess it does indeed depend on shipping costs, but
Just noticed this post on the Vintage Computer forum. I don't know a
thing about it:
http://www.vcfed.org/forum/showthread.php?63253-IBM-System-34-5340
--Chuck
> From: Charles Anthony
> discovered that changing the executable would change the behavior -- a
> heisenbug.
Ooh, love that neologism.
Noel
Hi all
I have a TRS-80 Model 2000 B/W Graphics board and a TRS-80 Card Cage
kit (upgrade model 12 to model 16B)
Are either of these worth shipping from the antipodes to anyone?
W
This is available for the cost of postage.
https://photos.app.goo.gl/OpVKxtbXqKp2VPl52
Mark.
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