Actual version: v0.25.00
Changes since version v0.24.E6
- allow the use of drives 3-4 as floppies while keeping 1-2 for DW4 
  and having the CoCo-SDC connected too.
  This is not the best combination, for sure, but has to be possible!
  With last version, it failed if MPI was pointing to the SDC slot

Last version: v0.24.E6

Changes since version v0.23.O
- drives 3-4 don't pass through the filter FDC-SDC
- added command WRITE MEM @n,start,dest,length
- after flashing a bank, it resets the computer
- tstHDW is executed from RAM to change of slot if needed
- if not MPI present, does individual tests, 1st SDC then FDC
- BANKn issues a coldstart if there is an OS
- BANKn now starts a ROMPACK (like CoCo RUN @n) if not an OS
- LLINK shows HD index on unit 4 if selected
- commands now return to caller Basic programs
- Sound and Play blocked next DW4 access
- added command SCOPY MEM @bank,start,dest,length 
- added command SCOPY MEM SLOT number,start,dest,length 
- added parameter to BANK n to start it in MAP1: BANK n,R
  that way I can start any DOS in MAP1 and use my floppies
  or the SDC changing of slot by means of the POKE &HFF7F,SlotNumber
  without getting the computer hanged.
  Living in MAP1 allows to boot a FLEX disk from floppy, but from SDC
  fails anyway you try it
- some code corrections (data/stack checking ...)
- now WRITE MEM allows the user to write partially a bank, so you
  can write sectors 1-2 first time and later sectors 3-4
  The flasher only erases the sectors it is going to flash.
- Backup now accepts FLEX discs too
- WRITE and SCOPY have default values for last three parameters
