I had some idea of trying to get money for an HP 41-CX a while back,
but on balance I think it's best to just go to someone who might be
interested in fixing it up and valuing it for what it is.
So - FTGH, just the cost of shipping (photo link below still valid)
David
On Sun, 19 Apr 2020 at 17:55, David Brownlee <abs(a)absd.org> wrote:
>
> I've come into possession of an HP 41-CX calculator - unfortunately it
> appears to have had batteries left in it which have left corrosion on
> the internal contacts.
>
> (some pics: https://photos.app.goo.gl/48bE7WJZP8R4PF9a9 )
>
> My classic hardware tendencies tend to run more towards the "can run
> *nix" end, and while I could just clean it up and throw it on eBay I
> wondered if anyone here has a 41C shaped soft spot and would be
> interested? (happy to trade/part trade for something they already have
> for which they are less fond if that works :)
>
> David
Some of the floppies I’m recovering data look to be either a multi-part ZIP file, or something. Was this a separate product from PKZIP? I’m not sure if I have a copy of PKZIP in the stuff I’ve recovered thus far. I’ve not pulled them into DOSBOX to try and restore them, so far I’ve just tried to use Stuffit-Expander. Part of the problem is every file has the same name, just on different floppies.
Zane
I find myself wondering, how well does CD-R and DVD-R media that hasn’t been used age? I have quite a bit of unused Verbatim DataLifePlus, as well as some other media that’s unused.
For the most part, I don’t need it, but I can see a couple reasons I might want to burn some in the future, mainly to exchange data with older systems.
Zane
Over at the CoCo Mailing List, there's a archeological discussion about
the DLOAD BASIC command in older versions of the Color Computer BASIC.
It uses the serial port (and no doubt was designed for computer sharing
in classrooms or similar), but the questions are around how it was
designed and what inspiration is drew from.
I infer MS wrote the code, and the protocol includes:
P.ACK - Acknowledge - C8 hex.
P.ABRT - Abort - BC hex.
P.BLKR - Block request - 97 hex.
P.FILR - File request - 8A hex.
P.NAK - Negative Acknowledge - DE hex.
Does that look like any protocol anyone has seen before?
Jim
why does this happen? how do I "reset" a floppy drive (in windows) so that it tells me what's on the current disk, not what was on the previous disk that's been removed.
These items have all been claimed.
David
> On Jan 31, 2023, at 12:57 PM, grif615(a)mindspring.com wrote:
>
> Does the post office still have a book rate?
>
> On Jan 31, 2023 10:12, David Barto via cctalk <cctalk(a)classiccmp.org> wrote:
> This is all on paper and weighs a fair bit.
> Located in San Diego area, so pickup would be best.
> I’m willing to ship it for 50% of the shipping cost.
>
> All classic computer related:
>
> UCSD Pascal pSystem listing from UCSD Pascal II.0 along with notes about what BIOS failures look like.
> Listing of a pascal_interpreter, written in Pascal (of course)
>
> Tech Notes and Books:
>
> Tech Notes:
> Booting the CP/M Adaptable System on the IMS8000
> SofTech MicroSystems Errata sheet for the FORTRAN Manual
> UCSD Pascal System Synchronous Input/Output Subsystem Implementation Guide (II.1, Preliminary) Date 10 April 79
> SofTech MicroSystems Marketing Department memo on Version IV compatiblity with Preceding Versions
> SofTech MicroSystems Adaptable System Tech Note (TN #2)
>
> Books:
> UCSD Pascal Version I.5 September 1978
> UCSD Pascal Version II.0 March 1979
> SofTech MicroSystems Micro News Vol I, No. 3 May 1980
> SofTech MicroSystems UCSD Pascal II.0 Users Manual Feb 1980
> SofTech MicroSystems UCSD Fortran User Reference Manual May 1980
> Practical Pascal Programs By Greg Davidson
>
> David
>
>
>
This is all on paper and weighs a fair bit.
Located in San Diego area, so pickup would be best.
I’m willing to ship it for 50% of the shipping cost.
All classic computer related:
UCSD Pascal pSystem listing from UCSD Pascal II.0 along with notes about what BIOS failures look like.
Listing of a pascal_interpreter, written in Pascal (of course)
Tech Notes and Books:
Tech Notes:
Booting the CP/M Adaptable System on the IMS8000
SofTech MicroSystems Errata sheet for the FORTRAN Manual
UCSD Pascal System Synchronous Input/Output Subsystem Implementation Guide (II.1, Preliminary) Date 10 April 79
SofTech MicroSystems Marketing Department memo on Version IV compatiblity with Preceding Versions
SofTech MicroSystems Adaptable System Tech Note (TN #2)
Books:
UCSD Pascal Version I.5 September 1978
UCSD Pascal Version II.0 March 1979
SofTech MicroSystems Micro News Vol I, No. 3 May 1980
SofTech MicroSystems UCSD Pascal II.0 Users Manual Feb 1980
SofTech MicroSystems UCSD Fortran User Reference Manual May 1980
Practical Pascal Programs By Greg Davidson
David
Originally as I understand it the mouse as a product of Xerox was intended not so much for general use but to aid youngins and disabled people with their usage. And despite the never-mousers, predominantly linux fanatics, it's an indispensable tool for nearly everyone. There was a stint where I favored trackballs. But it's a toss up as to which is more natural and faster. Each may excel in cwrtain applications.
Then there's the touch screen (and touch pad). I find touch pads superior, make that way superior to that horrific track point used on old Thinkpads. But again that'a me. Touch screens, my hatred for them grows almost daily. They have their place. And for portable devices they're largely the only game in town. But I often wish I at least had the option of a mouse or something close.
Is this an example of where older tech beats the new tech? Or do aspects of the newer tech just await refinement?
I have 2 of these that are in need of a new home. These are quite large 4 racks each. Although the 11/60 is only a double rack by itself.
Offers. Located In Kent. WA.
- Jerry253-569-6041
