From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?windows-1252?Q?Fredrik_S=F6derqvist?= Subject: Re: Problem with BitBLT Date: Wed, 09 Jul 2003 21:29:43 +0200 Sender: linux-fbdev-devel-admin@lists.sourceforge.net Message-ID: <5d5995f750.5f7505d599@student.liu.se> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="--10e2438520251df0" Return-path: Received: from mail.liu.se ([130.236.1.35]) by sc8-sf-list1.sourceforge.net with esmtp (Exim 3.31-VA-mm2 #1 (Debian)) id 19aKdU-0005gY-00 for ; Wed, 09 Jul 2003 12:29:52 -0700 Content-Language: sv Errors-To: linux-fbdev-devel-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Id: List-Unsubscribe: , List-Archive: To: Nitin Mahajan Cc: linux-fbdev-devel@lists.sourceforge.net This is a multi-part message in MIME format. ----10e2438520251df0 Content-Type: text/plain; charset=windows-1252 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable I=27m a bit concerned about the tenth bit in the BR04 register=2E Datashe= et (page 325) says=3A =2210 Source select 0=3A Configures the BitBLT engine to read the source data from the = frame buffer =2E=2E=2E 1=3A Configures the BitBLT engine to accept the source data from th= e host CPU via the BitBLT data port =2E=2E=2E=22 So if we want copy VRAM-=3EVRAM bit 10 should be 0 - no=3F Regarding BR04 (bits 0-7)=3A Since 0xFF is the =22write all 1=3As=22 and you see a small block=2C I be= lieve you are correct when you think the problem is with the transfer fro= m System RAM -=3E VRAM=2E The 0xCC should though be what we need=2E=2E=2E= (source copy)=2E Maybe you could try moving the source data to a different offset than 0=3F= If there are any issues with overlapping=2E=2E=2E Filling the entire VRAM with a pattern could perhaps also help in find th= e problem=2E Regards=2C F=2E S=F6derquist Content-Type: multipart/alternative; boundary="----_=_NextPart_002_01C3463F.4D99F2A8" ------_=_NextPart_002_01C3463F.4D99F2A8 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable HI! =20 Iam trying to program the Bit BLT engine of 69030 with the attached = code, but nothing is visible on the screen. When I select the bitwise operation as 0xFF(write to BR04) ,the white = block is coming at desired location and of desired size. But whwn I choose it as 0xCC nothing comes on screen... Can any one please help me out of this...... THANKING U IN ADAVANCE regards, =20 Nitin Mahajan mail:nitin@soc-soft.com Ph:51101667. Mobile : 9886099925 =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D The Lord gave us two ends -- one to sit on and the other to think with. = Success depends on which one we use the most. =20 ------_=_NextPart_002_01C3463F.4D99F2A8 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
HI!
 
Iam = trying to=20 program the Bit BLT engine of 69030 with the attached code, but nothing = is=20 visible on the screen.
When I = select the=20 bitwise operation as 0xFF(write to BR04) ,the white block is coming = at=20 desired location and of desired size.
But = whwn I choose it=20 as 0xCC nothing comes on screen...
Can = any one please=20 help me out of this......
THANKING U IN=20 ADAVANCE
regards,
 
Nitin = Mahajan
mail:nitin@soc-soft.com
Ph:51101667. Mobile :=20 9886099925
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
The Lord gave us two = ends -- one to=20 sit on and the other to think with. Success depends on which one we use = the=20 most.
 
------_=_NextPart_002_01C3463F.4D99F2A8-- ----10e2438520251df0-- ------------------------------------------------------- This SF.Net email sponsored by: Parasoft Error proof Web apps, automate testing & more. Download & eval WebKing and get a free book. www.parasoft.com/bulletproofapps