9 Apr
2013
9 Apr
'13
9:08 a.m.
allison <ajp166 at verizon.net> wrote:
[RX02 or RX50]
I'm not sure what I'd need it for? There is no other system within walking
distance that would understand the floppy format natively.
Any file I/O thus most likely will happen across the Internet (involving a PC anyway), so
I hoped I'd be fine with the TU58 emulation software discussed below.
Terminator: check.
ID plugs 0 and 1: check.
Cables: no check yet but inbound.
?? (not understanding the above). I should save the controller because the whole subsystem
is bad?
[core]
Mass storage
for my system is another area I need to spend more thought on, for now I was planning to
stay with the RL drives I got with the case.
In the PDP11 world its easy to build a system that forgets portable IO.
A reminder PDP-11 as not a PC and even a 256kb floppy is viable storage
as RT11 fits on it. RL packs were
over 160$ new (...)
cables, terminators and those annoying and scarce drive ID
plugs. If anything the floppy is always a must on my systems
as all my diags and
base RT11 systems are on that media (RX01, RX02, RX50, RX33, RX23).
Are they also available in TU58 (file) format?
A viable uVAX is more than 150mb, (more like 300-500
for V7),
a loaded PDP11 is 30MB. Just difference is OS utilization.
So I guess it all boils down on what one wants to run on it.
I've got one functional RD53 in it right now, and a second one I hope to revive at
some point in the future.
I would not covet a large drive unless you had the
application that
required it.
I thought that we here run large drives just for the kicks of it?!
I do have a
TQK(mumble) board already (which was originally also intended for the VSII), but no drive
yet.
Save it as loading diags from TK50 is both slow and painful assuming the
system can boot a tK50 (not guaranteed). The older LSI11 systems had it if there was a call for
non volatile
memory, the cost was high.
I happen to have 16KW of qbus core. Also core had a far slower cycle
time than Ram of
the day. Core that ran at 1.5us was fast where ram on the day was
under 1us and dropping.
So thus probably not very prevalent and not easy to find nowadays. Ho hum.
I've also already found out that the memory board I'll be getting is 512k_Bytes_
(256kW) and does _not_ have BBU support.
[OS question]
Start with RT11 as a base os and it will allow you to
test and get comfortable at lower
cost to learn. It will be transferable knowledge to RSTS or RSX, may help with getting
Unix
on the machine.
Agreed, sounds like a good starting point.
So long,
Arno