What are this Blank Sockets for?

[MbeeTech]

Thanks for the reply.
Pic 1. So if you put a ROM in there... Will it be mapped to the memory space somewhere or nah?
Also, what's all the blank chips for in the right hand area?

You can put other roms in the 2 blank spots - they will be mapped into memory from C000h to FFFFh as
per the table below referencing I/O port 050h :


As ChickenMan mentioned though, these rom positions were never used, so to make use of them 
you would have to write your own code to control the access to them.

The non-populated parts on the right hand side of the board are for the hardware serial port option.
As standard, all microbees have a serial port on the baseboard which uses an I/O port of the PIO
to bit-bash (software timed) serial communications. This limited the baud rate to a maximum of 19k baud
with handshaking enabled, 9600 baud without.  The Coreboard option uses the Zilog SCC and can operate
up to 38k baud in the microbee implementation with a lot less overhead for the processor.  It provided
2 additional serial ports at up to this speed.

Pic 2. OK, so you can't use them to expand to 64K or add extra ROMs?

Correct.  They map to the same location as the 4 x 8k rams.