PDP11/23 - prompt?
Fred N. van Kempen
waltje at pdp11.nl
Wed Jun 15 10:24:40 CDT 2005
On Wed, 15 Jun 2005, Philipp Hachtmann wrote:
> I am just getting a PDP11/23plus. The CPU is already at home and I have
> powered the machine up. Makes noise, turns fans, etc. If I start the
Congrats! Noise is good!
> machine (running indicator lit) it gives me a dollar sign ('$') prompt
> which seems to accept two character until it starts a new line.
Thats the bootstrap ROM ("ROM BIOS") talking to you. It wants
you to tell it from what device to boot. From memory:
DL RL01/02 disks
DK RK05 disks
HK RK06/07 (perhaps HM)
DX RX01/02 diskettes
Newer ones probably also support DU (MSCP), network and various
tape controllers (TM, TS, MU) as boot devices.
Beware- afaik, only the FIRST UNIT (unit 0) is supported.
> Here a few (perhaps totally stupid - but I've never used such a toy
> before) questions:
> What's that?
See above. Life! :P
> What can I do from there?
> Is it normal?
> My machine lacks harddisk and floppy (at the moment, they have not
> arrived yet). The monitor program (@-Prompt) seems to work correctly.
Once you have the disk stuff connected, try one of the above.
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