Analogue-sequencer

Just to make it clear, the CPU for the sequencer project can only be 
supplied in pre-programmed form by myself.
The CPU in question (Atmel T89C51RD2) features 64k FLASH ROM.
I have written a custom boot-loader for in-system programming that 
will receive firmware updates by midi sys-ex. This code boots before 
the main sequencer code, and does an integrity check on the firmware.
A bad image will force the unit into firmware update mode, as will a 
special key combination held at startup.

Firmware updates will be made freely available to users *but* the 
sysex updates are encrypted, and software protection on the CPU 
enabled. The source code will not be available for the time being.
I will be making full schematics available. Since the majority of the 
development effort is in the software, I feel I must protect my 
investment of hundreds of hours spent coding.

Cheers,
Colin f