, April 2021
products for RL01/RL02-Disk
now able to operate as Emulator in Slave-Mode and as Reader/Cloner
in Master mode.However, a separate interface board is currently
still required for each product.
Another goal was a complete
PDP-11 system emulation. In my opinion, the effort to keep a real
system such as a
running is not in relation to the time required. My idea: I wanted
to add a DE10-Nano board with my interface boards to an existing
. Based on the
emulator, I also wanted to control the front panel and, with my
development, the external I / O devices, such as RL02 disks, MFM
disks and serial interfaces. An interesting alternative project
would be based on the PiDP-11
system, if the Raspberry Pi is replaced by the DE10 nano board.
However, there is still a lot to be done here, including in the
project. I cannot do this alone, cooperation would be necessary.
It would also be important:
of both interface boards:
leaves a complete PIO with 40 pins. Then, it could be used for
additional projects as described above Unfortunately there was/is
no feedback and since the development of a PCB board is relatively
refrain from continuing with the development of the new PCB board.
This is very frustrating because there is no cooperation at all. I
have published my developments complete with all
sources and documentation at
and on my homepage . I was only concerned with the preservation of
the old software and I think that I succeeded. I am now a
pensioner and in the rest of my life other things have become much
more important and the further development of my projects is no
longer in my primary focus and is disappearing more and more.