A86: Re: emu question
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A86: Re: emu question
Virtual TI is an almost perfect emulator of all the calcs. The screen is
handled exactly the way the LCD works on the real calc (though 8 level
grayscale on 86 doesn't work right for some reason). TI86EMU, while a great
emu in it's time, does not properly emulate many aspects of the calc. If
you are using grayscale, then your sprite routine may be screwed up, which
would explain why they don't show up on TI86EMU (it doesn't support port 0).
As for the stuff working the first time, you are probably trashing your code
somehow. It will act like writeback, because the OS doesn't reload it
(unless you set/reset the flag to tell it to). The code to do that is
below (thanks to Clem for this info):
sub a
ld (_asapvar+1),a
> i am having a problem with Virtual TI. My game that i am making, draws a
> box using _ILine. Under ti86emu by steve gordon, the box displays fine.
> But, on Virtual TI and on the real calc, several small diagonal lines
appear
> around the box, that don't appear on steve gordon's emulator. Also, on my
> game, i have hotspots which are triggered by you stepping on them. the
way
> i implemented them is to check the tilemap for a special hotspot, execute
> code asscociated with that hotspot (if triggered), and then remove the
> hotspot from the tilemap so that it can't be triggered again. On steve
> gordon's emu, it works perfectly fine. on Virtual TI and on the real calc
i
> run the program the first time, everything works, it displays the hotspot
> tile and allows you to step on it. i exit and run the program again, this
> time it doesn't even display the hotspot. its as if it was permantly
> removed from the code. It used to do this on the calc, but now it works
> fine (although i don't know why).
References: