CP/M PCGET and PCPUT, Backspace settings

[Semper Talis]

Hi all,
It took me the better part of this afternoon to figure this out and I could not find anything similar in the forum.

So here what has happened:
I discovered on some CP/M disks the nice programs PCPUT and PCGET which let you use XMODEM to transfer files out of the ALTAIR and onto your PC via the serial connection.

Absolute great stuff as I can write my programs with a modern programmers editor ( I use BBEDIT) and dump it back in the ALTAIR and run the assembler.

However this morning after playing around with some settings on the ALTAIR I got errors when transferring data to/from the PC.

I tried all kinds of settings and rebooting but could not figure out why this was not working anymore.

Long story short ,after hours of fail I got it.

I had set the serial ports to translate the RUBOUT/ BACKSPACE with the chr127 (Delete Button) so I could overcome my frequent mistyping causing me to put in a whole new line and use the Familiar delete instead.

It looks like this is a bad idea for XMODEM, it will simply not work. I changed the translated “Delete” back to “OFF” and voila it worked like a charm.

May this help sometime someone encountering the same problem.

Wolfgang