clio.py is a commandline script for transferring files between pc and 41cl.
It transfers binary and hex data. It optionally calculates the CRC checksum. 
However, this makes sense only for files, that contain a full memory page 
(4096 words), since the YCRC on the 41cl only works for a complete memory page.

Some additional remarks:
- The script runs under Windows and Linux.
- For Linux I would recommend to make the files executable (chmod +x clio.py).
- Requirements:
  -- Python 2.7.x with packages: pyserial, crcmod, binascii.
- All transfers should be done with TURBO50-mode.
- Sending from 41cl is carried out with Baud 9600.
- Receiving at 41cl is carried out with Baud 4800.
- Start the receiving process before the sending process.
- When making a backup or restore of the user area (0x800xxx) the CRC-checksum
  is usually of no use since the ram area is modified between the transmision
  and the CRC calculation. In order to get a meaningful checksum you have to 
  copy/write the user area to another page (e.g. 806) and calculate the checksum
  there.

Here are two examples for programs on the 41cl:

For sending to the pc with address and length in ALPHA:
LBL "SSEND"
TURBO50
SERINI
BAUD96
YEXP
OFF
END

E.g. put "800000-0FFF" in ALPHA for a complete backup of the 41cl ram area (page 800).


For receiving from the pc with address and length in ALPHA:
LBL "SRECV"
TURBO50
SERINI
BAUD48
YIMP
OFF
END

E.g. put "800000-0FFF" in ALPHA for a complete restore of the 41cl ram area (page 800).



Here are the correspong commandlines on the PC:

For receiving on the PC enter:
For Linux:  "./clio.py r /dev/tty... <destination filename>"
For Windows: "<path to python>\python.exe clio.py r COM? <destination filename>"

For sending from the PC enter:
For Linux: "./clio.py s <source filename> /dev/tty..."
For Windows: "<path to python>\python.exe clio.py s <source filename> COM?"

The following two programs send and receive a complete 4k-word block and calculate
 the CRC (YFNSP required):

LBL "SSND4K"
"|-000-0FFF" ; |- = "Append"-symbol 
TURBO50
SERINI
BAUD96
YEXP
"|-****"    ; |- = "Append"-symbol 
3
AROT
ASHF
ASHF
YCRC
AVIEW
END

LBL "SRCv4K"
"|-000-0FFF" ; |- = "Append"-symbol 
TURBO50
SERINI
BAUD48
YIMP
"|-****"    ; |- = "Append"-symbol 
3
AROT
ASHF
ASHF
YCRC
AVIEW
END

Only the three nybble base address is required in ALPHA (e.g. "806" for page 
0x806 of  the User ram area).

The clio.py is written by Bernd Grubert (bgrubert@uni-bremen.de)
The script is based on the write1.py and read.py scripts 
from Antti Louko (Thanks Antti, I hope you don't mind ... :)