How to change the compression ratio from field to field without reloading the firmware

In order to change the compression ratio on the fly, SWIRQ2 in the EIRQIE register must be enabled.

When the interrupt flag for SWIRQ2 in EIRQFLG is then set, it means that the RCVAL will be applied to the compressed field right after this interrupt. This does not apply to RCTYPE. RCTYPE can not be changed on a field by field basis with the present firmware.

RCVAL changes on the fly are supported with firmware version encode_2_7_p.sea upwards.