Marco, All keywords on the ZX81 have to be single keypress-type words - not typed out.
The “TO” in your FOR loop is typed by pressing Shift-4. Don’t type “T” “O” or you will get a syntax error. Ian > On Jul 12, 2015, at 11:21 PM, Marco Rauhut <ma...@familie-rauhut.eu> wrote: > > Hello; > > I have here my first Sinclair ZX81 Computer with 16K Ram extension. > To check if the Ram extension works properly i want to write an small > Basic program to check each byte. > The first thing i struggle on is that 1 could not type in a for next > statement. > 10 FOR I = 17000 TO 32768 > if I type in this line, the ZX81 mark an inverted "S" just before "TO". > 10 FOR I = 17000 "S"TO 32768 > I found out that the ZX81 "think" that there is an Sytax Error with the TO. > So i tryed all combinations with and without spaces in that basic line.... > Nothing matters. > Is there someone who knows about that behaviour? > > Marco > > * Englisch - erkannt > * Englisch > * Deutsch > > * Englisch > * Deutsch > > <javascript:void(0);><#> > > > --- > Filter service subscribers can train this email as spam or not-spam here: > http://my.email-as.net/spamham/cgi-bin/learn.pl?messageid=655CAAF2292711E5BBD1739B93ED0201
