doug (06/24/82)
Is there something wrong with my ZX81 or is it doing what it is
supposed to do?
If I run the following program:
10 FAST
20 FOR A=0 TO 255
30 PRINT CHR$ A;
40 NEXT A
50 SLOW
then it "quickly" does it (blinking out the screen) and when the
program is done the character set is displayed.
The problem is this: if I leave out lines 10 and 50 and try to
go into FAST and SLOW modes by hand I
(a) never see the cursor/prompt
(b) nothing is displayed in this run after I go back to SLOW mode
(c) in general I never see anything in FAST mode, even when the
programs I run stop for input, pause, etc.
Has anybody else had this problem?
Also, does anyone know Sinclair's unpublished telephone
number so I can bother them about this?