There is no xmodem in the system rom.
There is no form of binary-safe file transfer at all other than cassette.
The load/save function in telcom is nothing more than simple tty
redirect. There is no protocol at all to it and it, can't handle binary,
no checksums or error handling, no binary encoding, doesn't even know
when the file begins or ends, you have to start the capture, stop it,
then almost certainly have to edit the file afterwards to remove leading
and trailing junk.
In order to transfer files reliably you have to install some kind of
software to do it. There are xmodem programs you can install for
instance, and *then* you could use rx/sx
https://github.com/LivingM100SIG/Living_M100SIG/blob/main/M100SIG/Lib-12-NEC-OLIVETTI/XMODEM.DOC
https://github.com/LivingM100SIG/Living_M100SIG/blob/main/M100SIG/Lib-12-NEC-OLIVETTI/XMODEM.NEC
https://github.com/LivingM100SIG/Living_M100SIG/blob/main/M100SIG/Lib-12-NEC-OLIVETTI/XMODEM.PCH
But the most convenient method is to use tpdd.
Cold-reset the 8300 and then run: dl -vb TS-DOS.NEC && dl -v
and follow the on-screen prompts which will install a ram version of
ts-dos, a user-friendly, full-featured, but large tpdd client that will
consume about 6k.
Or use TEENY.NEC in place of TS-DOS.NEC above and that only consumes
about 750 bytes but is very bare bones.
--
bkw
On 4/6/25 22:42, Ron Hudson wrote:
An Update: I have a USB/Serial adapter, A null modem, and a 9 to 25 pin
converter.
I see I mentioned those already...
I am able to interact with a shell on my desktop machine from a telecom
session on the
PC-8300. Even though I have all these I can't seem to get sx / rx
(linux xmodem commands)
to interact with the xmodem of upload or download in telecom.
Thanks for the pointers on Laddiecom, bkw, and the Model T Serial cable.
-------------------------------------------------------------------------------------------------
Ronald Hudson.
Sent from my Linux Desktop.
------------------------------------------------------------------------
*From:* M100 <[email protected]> on behalf of Brian K.
White <[email protected]>
*Sent:* Sunday, April 6, 2025 1:18 PM
*To:* [email protected] <[email protected]>
*Subject:* Re: [M100] NEC PC-8300 and the Linux machine
On 4/6/25 13:55, Ron Hudson wrote:
Hi All, I just got a USB/Serial connector and hopefully the needed
cables to hook the two machines together.
How do I get them to talk? Can I get the Linux box to pretend to be a
floppy drive?
-------------------------------------------------------------------------------------------------
Ronald Hudson.
Sent from my Linux Desktop.
http://tandy.wiki/Model_T_Serial_Cable <http://tandy.wiki/
Model_T_Serial_Cable>
https://github.com/bkw777/dl2 <https://github.com/bkw777/dl2>
https://bitchin100.com/wiki/index.php?title=LaddieCon#LaddieAlpha
<https://bitchin100.com/wiki/index.php?title=LaddieCon#LaddieAlpha>
--
bkw
--
bkw
