PLAN


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1. fix hello.pal (in noncpu)
2. fix hello.pal (in multipdp8) (it only sees bytes with the lowest bit set)

             +---------+
       +-----+ Arbiter <-----------------------------------------------+
       |     +-^-------+                                               |
       |       |                                                       |
       |       |                                                       |
       |       |                                                       |
+------v-+   +-+--------------+                                      +-+--------------+
| UART 0 +---> Command Parser +-----+                                | Result Printer |
+--------+   +----------------+     |                                +-^--------------+
                                    |                                  |
             +-------+              |           +----------------+     |
             | Cache |              |           | Another Cache  |     |
+--------+   +-------+            +-v-------+   +----------------+   +-+-----------+
| UART 1 +---> PDP-8 +------------> Arbiter +---> RAM Controller +---> Broadcaster |
+--------+   +-----^-+            +---------+   +----------------+   +-+-----------+
                   |                                                   |
                   +---------------------------------------------------+