I need some help with some HP 2000 BASIC. I probably last used it
around 1980, and not often even then for somehow the PDP-8s looked more
attractive than the grey HP box in the same room. Yeah, I know better
now. Luckily, I'm sure some of you can help me out...
I've been retyping TREK73 from a fairly poor-quality listing, and it
needs a sanity check. Also I'd like to learn a bit more about what I'm
typing. This is the original source for the Star Trek program by
William Char and friends, and what I've typed so far is on my Star Trek
web page at
http://www.dunnington.u-net.com/public/startrek/
I've added some other stuff to that page, too.
Questions:
All the lines have two spaces between the line number and the code.
All, that is, except for a few that have an '_at_' in place of the second
space. Is that significant (does it mean "ignore this" or something?)
or is it just an artifact of a noisy Teletype line? (The listing
appears to have been made on a Teletype, which needed a new ribbon and
a better platen roller.)
What does '14 in a PRINT statement, in front of a quoted string, mean
(eg in PRINT '14"SULU")? I wondered if it were something like PRINT
TAB(14)"... but there are TAB()s elsewhere. A control character,
perhaps? If cursor or screen control, are they octal or decimal (I'd
guess decimal) and is there a table anywhere?
What exactly do the first two parameters to the ENTER command do? They
always seem to have three variables (eg ENTER T2,T,X$).
That'll do for now :-)
If anyone would like to proofread what I've retyped so far (about half
the total) and check for obvious sillies, please do - especially in
TREK0 around line 740 (cf line 840). Better still, if anyone is
willing to actually try this out, please do! though it won't work very
well with half of it missing.
--
Pete Peter Turnbull
Network Manager
University of York
Received on Mon Nov 10 2003 - 15:17:24 GMT