Xref: utzoo comp.graphics:6315 comp.sys.ibm.pc:30801
Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!uunet!uchdcc!opta!flibedin
From: flibedin@opta.cl (Fernando Libedinsky)
Newsgroups: comp.graphics,comp.sys.ibm.pc
Subject: Bitmap's display on EGA using TC 2.0
Keywords: EGA, TC
Message-ID: <12292@opta.cl>
Date: 27 Jun 89 21:10:32 GMT
Reply-To: flibedin@opta.cl (Fernando Libedinsky)
Organization: OPTA S.A.
Lines: 14

I'm a writing a program for displaying TIFF files on a EGA. Currently
all the TIFF stuff is working OK (I'm able to display on a Hercules)
and can display also in the EGA using TC putpixel. However it is very
slow to display pixel at a time. What I want to do now is to display
the file using TC putimage, and my problem is to create a putimage
bitmap in the correct format. For example, with a Hercules each pixel
is 1 bit in the bitmap, but in the EGA each pixel has 4 bits in the
bitmap. What I want do know is which are the bits patterns for
displaying a WHITE pixel and a BLACK pixel. Any one can help me with
this problem ? any suggestions ?

Please reply by e-mail.

   Fernando  Libedinsky
   OPTA S.A.
   UUCP: flibedin@opta.cl
   ...!uunet!uchdcc!opta!flibedin