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 Also, does anyone know Sinclair's unpublished telephone number so I can bother them about this?