14 Dec
2005
14 Dec
'05
8:04 a.m.
-----Original Message-----
From: cctalk-bounces at classiccmp.org
[mailto:cctalk-bounces at classiccmp.org] On Behalf Of woodelf
Sent: dinsdag 13 december 2005 23:35
To: On-Topic and Off-Topic Posts
Subject: Re: CUBIX/6809 updates
Gooijen, Henk wrote:
True. I was not thinking of the I/O hardware capacity, but in
the physical console, already built. The "blinkenlight" project
can control the full-blown PDP-11/70 console (just), but if you
need even more LEDs/switches to control, the design allows you
to stack several I/O boards! Each I/O boards gives 64 input pins
and 64 output pins, so go ahead and wire that S/3 console :-)
- Henk, PA8PDP
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Thank you for your cooperation.
but it would make the entry of an address (16-bit)
cumbersome.
You must enter it as an 8-bit high and an 8-bit low address.
I'd definately would go for 16 switches in this case, and also
16 LEDs for the address. Perhaps a matter of taste ...
But come to think of it,. was not the 6809 board first
designed for your PDP 11 interface?. More than ample switches
and lights.