From: utzoo!decvax!harpo!uwvax!doug
Newsgroups: net.micro
Title: ZX81 - 2 Questions
Article-I.D.: uwvax.444
Posted: Wed Jun 23 17:21:48 1982
Received: Sun Jun 27 05:25:26 1982


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    Also, does anyone know Sinclair's unpublished telephone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?