17 Aug
2002
17 Aug
'02
6:30 a.m.
I've finally got this old PDP-11/24 up and running.
The system has 1 meg
of RAM, but keeps giving insufficient memory errors when trying to run
various programs (like ADVENT.) I can't believe that ADVENTure would eat
up more than 1 megabyte of ram. Is there some tuning bit that I am
missing here?
Unless the program has been designed to use extended memory overlays, or
specifically designed to use extended memory directives, it is limited to
the standard virtual memory address space of 56kb, minus whatever is used
by the monitor (and this is carved out of the low 56kb of the machine...
the rest of the 1mb is unused).
As I already mentioned in another post, you could try using VBGEXE
to run it in its own 56kb space.
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | email: gentry at zk3.dec.com (work) |
| Unix Support Engineering Group | mbg at world.std.com (home) |
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+--------------------------------+-------------------------------------+
17 Aug
17 Aug
7:23 a.m.
New subject: Anyone remember this PET 2001 game?
Does anyone recall an old Commodore PET 2001 game which involved a
flying a "spaceship" down through a toilet while you shot at germs?
-brian.
2:11 p.m.
New subject: Anyone remember this PET 2001 game?
On Sat, 17 Aug 2002, Brian Chase wrote:
Does anyone recall an old Commodore PET 2001 game
which involved a
flying a "spaceship" down through a toilet while you shot at germs?
That program sounds like it would be memorable but for all the wrong
reasons.
Sellam Ismail Vintage Computer Festival
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19 Aug
19 Aug
5:18 a.m.
New subject: Anyone remember this PET 2001 game?
--- Brian Chase <vaxzilla(a)jarai.org> wrote:
Does anyone recall an old Commodore PET 2001 game
which involved a
flying a "spaceship" down through a toilet while you shot at germs?
-brian.
Wow! No I don't, but if a copy is found, I'd love to see it.
Was this for a 4K/8K PET? 80-col? Have any fragment of a title?
Sounds as weird as "Space Spuds" - the demo game with the Amiga
"X-Specs 3D" - LCD shutter glasses that ran off the second game/mouse
port - you shot at potatoes and french fries, in 3D. You lost
when you gained too much weight.
-ethan
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20 Aug
20 Aug
4:40 p.m.
New subject: Anyone remember this PET 2001 game?
At 07:17 AM 8/19/2002 -0700, Ethan Dicks wrote:
Sounds as weird as "Space Spuds" - the demo
game with the Amiga
"X-Specs 3D" - LCD shutter glasses that ran off the second game/mouse
port - you shot at potatoes and french fries, in 3D. You lost
when you gained too much weight.
That program and those glasses are in my collection, I think.
- John
19 Aug
19 Aug
11:53 a.m.
--- Megan <mbg(a)theworld.com> wrote:
Since ADVENT is such a monster, overlays or no, another thing that might
matter is a) which monitor you are using and b) which version of RT-11.
I do not have hard statistics to quote, but I am fairly certain that
between RT-11 v4.0 and v5.3 (two of the more common versions still in
use today) and between the various monitors, there can be several Kbytes
of difference in free memory - enough to matter to something as large
as ADVENT.
OTOH, if you are building from source, that might matter, too, depending
on the version of the compiler (the libraries/runtime, essentially), too.
-ethan
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I've finally got this old PDP-11/24 up and
running. The system has
1 meg of RAM, but keeps giving insufficient memory errors when trying
to run various programs (like ADVENT.) I can't believe that ADVENTure
would eat up more than 1 megabyte of ram. Is there some tuning bit
that I am missing here?
Unless the program has been designed to use extended memory overlays, or
specifically designed to use extended memory directives, it is limited to
the standard virtual memory address space of 56kb, minus whatever is used
by the monitor (and this is carved out of the low 56kb of the machine...
the rest of the 1mb is unused).
8079
days inactive
8082
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