[TI ASM] Moving a bit of text around on screen

That_One_Guy · Post by **That_One_Guy** » Thu 07 Apr, 2005 12:03 am

I cant seem to figure out how to move a bit of text around. If someone could give me some code on moving an X with the arrow keys and clears the screen, I'd much appreciate it.

koolmansam375 · Post by **koolmansam375** » Thu 07 Apr, 2005 12:16 am

basic or asm?

Timendus · Post by **Timendus** » Thu 07 Apr, 2005 12:25 am

<edit>I thought it was a dumb question in asm already, never thought of the possibility that he meant Basic

</edit>

Code: Select all

ScreenUpdate:
      bcall(_clrlcdfull) or another bcall that clears the homescreen without resetting currow en curcol
      ld hl,str
      bcall(_puts)
Loop:
      get keypress - don't know the code for that by heart :)
      cp leftkey
      jp z,left
      cp rightkey
      jp z,right
      etc...
      jp Loop

leftkey:
      ld a,(curcol)
      dec a
      ld (curcol),a
      jp ScreenUpdate

rightkey:
      ld a,(curcol)
      inc a
      ld (curcol),a
      jp ScreenUpdate

etc...

You should be able to fill in the gaps and get the errors out, if any (haven't tested this of course), or else I suggest you start working through some tutorials...

That_One_Guy · Post by **That_One_Guy** » Thu 07 Apr, 2005 1:26 am

Heh, im extremely new to ASM, but yeah, i should be able to fix any errors. If not, i'll post here again. Thanks for the help!

Post by **Patori** » Thu 07 Apr, 2005 12:49 pm

Text... in a bit? a bit of text? Text cannot be a bit in length.... well maybe.... Yes or no, or something...

Timendus · Post by **Timendus** » Thu 07 Apr, 2005 12:52 pm

You're welcome

Post by **tr1p1ea** » Thu 07 Apr, 2005 1:49 pm

patori ... you know very well what he meant.

koolmansam375 · Post by **koolmansam375** » Thu 07 Apr, 2005 8:44 pm

Timendus wrote:<edit>I thought it was a dumb question in asm already, never thought of the possibility that he meant Basic </edit>

Yea, If youve read enough of 83pa28d (up to the text section) you should have enough knowledge to write this yourself (well it depends how fast you want the keypress detection to be

).

That_One_Guy · Post by **That_One_Guy** » Thu 07 Apr, 2005 9:01 pm

Well, I did say i am extremely new to ASM. Thanks again for the help.

Post by **tr1p1ea** » Fri 08 Apr, 2005 2:10 pm

You will always find help here, but trust me things will be a lot easier for you if you read the tutorial. It will provide you with a good basis for learning asm

.

Timendus · Post by **Timendus** » Fri 08 Apr, 2005 3:39 pm

Nothing wrong with learning from example, I think most people of "my generation" (those who started with calc assembly over four years ago) learned it that way... In the good old days when ASMGuru was God

But I very much agree that you gain a much better understanding of what you are actually doing in your software by reading through a few (good) tutorials. And that makes for better code.

Post by **tr1p1ea** » Fri 08 Apr, 2005 4:35 pm

Well i learned from ASMGuru and examples too, mainly because i only have an 83 ... not an 83+.

But that is about to change

.