Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!sdd.hp.com!think.com!mintaka!streeter
From: streeter@theory.lcs.mit.edu (Kenneth B Streeter)
Newsgroups: comp.sys.tandy
Subject: Tandy 100 Questions -- Text wastes 11K?  Clear problems?
Summary: Does "Text" waste 11K?  Anybody ever have any problems with "Clear"?
Message-ID: <1991May24.125838.29358@mintaka.lcs.mit.edu>
Date: 24 May 91 12:58:38 GMT
Sender: streeter@im.lcs.mit.edu
Followup-To: comp.sys.tandy
Organization: Laboratory for Computer Science, MIT
Lines: 34


I have recently purchased a used Model 100, and have two questions
that I can't find answered in the Users Manual, or Technical Reference
manual:


1)    Does the "Text" program require a large portion (~10K to ~11K) of
   RAM for the program?

      I have a 24K Model 100.  When I first start the machine up from
   a cold start, the machine shows around 21K free on the menu.  If I 
   enter the "Text" program, create a short text file (say containing
   1 character), and exit "Text", I find that around 10K have suddenly
   disappeared!  If I enter BASIC, type "clear", and return to the
   menu, the missing memory has returned.  It seems to me that the
   "Text" program must be copying itself, or a portion of itself into
   RAM for execution.  What does this mean if I have less than
   sufficient room for this to be done?  Does "Text" not work?

2)    When issuing the "clear" command from BASIC, sometimes (it seems to
   be whenever I have less than about 9K of free memory remaining) the 
   machine just LOCKS.  That is, the "Ok" prompt never returns in BASIC,
   none of the keyboard keys have any effect, and the only thing that 
   "fixes" things is a power cycle.  When the power is cycled, the machine 
   has been completely reset in that date and time are set back to Jan 1900,
   00:00:00, and all memory is cleared.  What is going on?  Is something
   wrong?  What could I do to try to debug/fix this?

Any help would be greatly appreciated!
--
Kenneth B. Streeter         | ARPA: streeter@im.lcs.mit.edu
MIT LCS, Room NE43-350      | UUCP: ...!uunet!im.lcs.mit.edu!streeter
545 Technology Square       | (617) 253-2614    (work)
Cambridge, MA 02139         | (617) 225-2249    (home)