Changes
/* Registers */
#?? memory all other registers can be freely used as persistent memory
</pre>
* Note: Register B, Bit 2 allows to select BCD or Binary mode for registers 0..9 (however, this does - of course - not affect RAM location 32h)
== Bugs ==
* Register 32h is meant to contain the Century (not Millenium)
* Register 32h can be only '''either''' bcd '''or''' binary (not both)
* Register 32h documentation does not specify whether it shall be BCD or Binary
* Register 32h source code implies it shall be binary (not BCD)
* Register 32h source code supports only two centuries (19 and 20) this is probably due to misunderstanding the RTC chip datasheet (which sorts of suggests the 8bit RAM location can contain only two different values, which is total nonsense)
== Status registers ==
