XMODEM for FLEX09 ?

[johnx993]

Just curious if anybody ever made a version of XMODEM for FLEX or FLEX09.

I use XMODEM from a PC running as a terminal to all my S-100 machines.
I find it is a convenient way to upload/download files without having to use special software to access the disk images directly.
I'd like to do the same with the SS-50 boxes that run FLEX.

-J

 

[jlang]

PCGET and PCPUT are xmodem utilities available for multiple systems including FLEX.

 

[johnx993]

Is there any value in using PCGET/PCPUT over XMODEM ?
I'm more inclined to a weekend project porting the 8080 XMODEM code over to a 6809.

-J

 

[johnx993]

(mainly because I'm looking for an excuse to do some 6809 coding...)

 

[jlang]

Is there any value in using PCGET/PCPUT over XMODEM ?

It's already done ;^)

I'm sure xmodem for FLEX has been done. I just can't find it right now.

Coding xmodem for a 6809 is a good weekend project. Go for it!

 

[johnx993]

I did try the PCGET/PCPUT and found a few config issues for my particular system. Noted below, if anyone else encounters them.

1) the instructions to load PCGET.S19 via monitor Load, omit the fact you need to set the PC address to the FLEX warmstart prior to hitting 'G'.
^P CD03
2) the reference to upper/lower ports refers to physical location, not memory address. Each serial card has two DB-25 connectors mounted vertically.
In my case I use port 1A, meaning I have to use the 'U' parameter with PCGET/PCPUT.
It also means I had to reassemble the source after editing the serial address from $E000 to $E010 to specify port 1.

Not a real headache after it's setup properly. Unless you are constantly tinkering with your system.

-J