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This forum is locked: you cannot post, reply to, or edit topics. Z80 & 68k Assembly => z80 & ez80 Assembly
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Sleight


Newbie


Joined: 22 Nov 2010
Posts: 9

Posted: 04 Jan 2011 11:46:22 pm    Post subject:

I am trying to make a program that uses the far most column and bottom row. (the ones that basic can't use)
Here's what I have, and I have no clue why it isn't working. Help please?

BCALL ClrLCDFull
BCALL RunIndicOff
Set fullScrnDraw,(IY+apiFlg4)
LD BC,0 ;bottom left corner
LD DE,95*256+63 ;top right corner
BCALL DarkLine
BCALL GetKey ;I get the same result even if I leave this off
Ret


Oh, and I'm using Mimas .3 on my calculator.
What (I think) this code should do is draw a line from the bottom left corner to the top right corner, including the pixels at the corners.

What I am getting is a line across the screen, but neither of the corner pixels are darkening.
So I am getting the line I want, it's just that (I think) it is clipping the parts of it that are in the "forbidden rows".

Thanks
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Ben24


Newbie


Joined: 28 Dec 2010
Posts: 16

Posted: 06 Jan 2011 12:04:07 am    Post subject:

It seems to be working fine for me. I'm guessing that the "GetKey" is there to pause the program until you press a key in order to prevent the rightmost column from clearing when the program exits and the "done" message is displayed?

This is how it looks on my calc (well... emulator):



(You'll notice the clearing of the rightmost column when the program exits)

I don't really have any suggestions for you other than, perhaps, to try it without Mimas. Maybe something is going wrong and the fullScrnDraw flag isn't being set correctly?

I'm totally new to assembly so forgive me if the above is incorrect, ludicrous, or if I haven't been of much help at all :P

- Ben


Last edited by Guest on 06 Jan 2011 12:08:27 am; edited 1 time in total
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FloppusMaximus


Advanced Member


Joined: 22 Aug 2008
Posts: 472

Posted: 06 Jan 2011 10:21:20 pm    Post subject:

Looks like the fullScrnDraw flag isn't correctly defined in Mimas. I'm sorry about that; I have no idea how that could have happened. You can write 'set 2, (iy + apiFlg4)' instead.

I'll release a fixed version of Mimas as soon as I have a chance. (But I guess while I'm at it, I should probably check to make sure I didn't screw up any other flag definitions!)
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Sleight


Newbie


Joined: 22 Nov 2010
Posts: 9

Posted: 07 Jan 2011 11:30:30 pm    Post subject:

FloppusMaximus wrote:

Looks like the fullScrnDraw flag isn't correctly defined in Mimas. I'm sorry about that; I have no idea how that could have happened. You can write 'set 2, (iy + apiFlg4)' instead.

I'll release a fixed version of Mimas as soon as I have a chance. (But I guess while I'm at it, I should probably check to make sure I didn't screw up any other flag definitions!)


Thanks, works great!
I really appreciate Mimas, and have thoroughly enjoyed learning assembly on my calculator.
I never seriously thought I would actually learn it that hexadecimal voodoo (coming from Ti-Basic), but here I am, and having fun no less!
--
On an entirely different subject, I am a little confused about the graph screen.
I understand the whole LCD/buffer relationship, but what about drawing to the graph screen?
I'm trying to leave a picture on it after my program is through, so that I can save it to a pic.
I thought that would be easiest to do by drawing on the graph screen and not mucking with the vat.
How would this be done with out the graphing Bcalls?


Any help appreciated.
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calc84maniac


Elite


Joined: 22 Jan 2007
Posts: 770

Posted: 10 Jan 2011 12:21:20 pm    Post subject:

I think what you need to do is make sure the graph is not marked as dirty. This code could work:

Code:
res graphDraw,(iy+graphFlags)


That makes sure the graph won't be redrawn the next time it is viewed.
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Sleight


Newbie


Joined: 22 Nov 2010
Posts: 9

Posted: 10 Jan 2011 09:34:07 pm    Post subject:

calc84maniac wrote:

I think what you need to do is make sure the graph is not marked as dirty. This code could work:

Code:
res graphDraw,(iy+graphFlags)


That makes sure the graph won't be redrawn the next time it is viewed.


Of course. What else could it be?
From Ti's documentation, it seemed that this flag was only for the equations, statplots, and the like.
More likely, the distinction between "graphing" and "drawing" in the first place is primarily an artifact of my time with ti basic.

...Or I'm just wrong altogether.

Thanks again
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Sven.Thomas0


Active Member


Joined: 19 May 2009
Posts: 520

Posted: 16 Jan 2011 11:02:20 pm    Post subject:

Ah, I saw your post on TIBD before I came over here (issa me, Xeda). Well, if you want to store the graph screen to a picture, you can do something like this (forgive me if my mnemonics are wrong):

Code:

PicNameInOP1:
  ld hl,$0060       ;216000        This is the name of the pic. Change the 00 to whatever pic number you would like
  ld (OP1+1),hl     ;227984
  xor a             ;AF
  ld (OP1+3),a      ;327B84
MakePic:
  rFindSym          ;D7
  jr c,3            ;3803
   bcall(_DelVarArc);EFC94F
  bcall(_CreatePict);EF3343
  ld bc,756         ;01F402        Size of the pic
  ld hl,plotSScreen ;214093
  inc de            ;13
  inc de            ;13
  ldir              ;EDB0          copies the data pointed at by HL to the position pointed at by DE. It copies BC bytes
  ret               :C9

Later you can manipulate the pic vars to hold the last row of pixels, too Very Happy


Last edited by Guest on 16 Jan 2011 11:03:22 pm; edited 1 time in total
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