flash (or ide) storage for unibus 11?

David Bridgham dab at froghouse.org
Tue Nov 24 18:37:51 CST 2015

On 11/24/15 18:21, Phil Budne wrote:

> I suppose "host" ports can used to support physical USB dongles of
> various sorts (serial, ethernet), but I guess my orientation is "why
> connect extra hardware that can be simulated?"

We talked about this and put it in the category of "the hardware can do
it so somebody probably will but we're not going to worry about it".

> Other wishy things:
> memory region visible to q/unibus as boot rom

An earlier comment about how we wouldn't be able to boot off our native
disk drives caused me to think along this direction too.  This seems a
nice feature and should be easy enough to implement.  No hardware
changes are needed.

> ability to halt/reset the q/unibus (PDP-11) processor
>  (making the MCU into a "front end")

Huh.  Cute.  We weren't planning to put in the ability to assert BHALT
or BINIT.  It could then halt the processor and examine memory but it
couldn't see the processor registers or even set a start address.  Or
could it hack into the console terminal and send commands to ODT? 
Anyway, I'll leave that one to you.


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