Voyager #02 19 октября 1998

Софт

Profi Club - Glitch in the View Screen v2.0 - what does it mean?

(C) RAINBOW, Nizhny Tagil
Music PYRAMID (C) ZHENYA/WE/ZER0



            What would it mean



     Who saw my View Screen versions 2.0 through 4.0,
have noticed that if you include a picture show on CP / M 
screen and press the 'V' - views, a Spectrum screen will 
quickly switch to the CP / M'ovsky and back. After a few tens 
of seconds at Spectrum will screen vylazit any delirium, 
altered attributes. Just spoils Advanced screen. Some time 
later, the machine will hang or reset. I thought it was a 
glitch my program (eg, stack overflow), but totally dug it, I 
found no errors. 


     Dial little program:


    LD BC, # DFFD; port PROS
L1 LD A,% 10000000; includes an advanced screen

    OUT (C), A

    XOR A; includes the usual screen

    OUT (C), A

    JP L1; repeat



     After a few seconds, blinking screen machine will hang or 
reset. 



     From the programmer's perspective, there is no error in 
the program, but comp buggy. If you want to watch, as it 
happens, then after postavte OUT'ov dvatri HALT'a. 


     The explanation for this must be sought from Gluck 
zhelezyachnikov, those who know the structure of the computer. 
I have the same coder, and I can not tell what was going on. 


            And really, what?