dsims@uceng.UC.EDU (david l sims) (10/30/90)
I want to use BIOS call 10H, function 09H (write attribute/character at current cursor position). Register BL is supposed to hold the attribute of the character that I want to write. However, I've searched my BIOS manual high and low, and I can't find anything describing this "character attribute." Does anyone know how this character attribute is defined? I'm using alpha mode only, but if there's any information on graphics attributes as well, I would appreciate having it.
stever@Octopus.COM (Steve Resnick ) (10/31/90)
In article <6558@uceng.UC.EDU> dsims@uceng.UC.EDU (david l sims) writes: >I want to use BIOS call 10H, function 09H (write attribute/character at >current cursor position). Register BL is supposed to hold the >attribute of the character that I want to write. However, I've searched >my BIOS manual high and low, and I can't find anything describing >this "character attribute." > >Does anyone know how this character attribute is defined? >I'm using alpha mode only, but if >there's any information on graphics attributes as well, I would >appreciate having it. The attributes are the colors for the text you want. Each character is associated with a color byte. The attributes are set as follows: BbbbIfff : Where each character represents a bit from MSB to LSB. B = blink bit. If this is set, foreground chars blink. b = background attribute. I = foreground intensity. f = foreground attribute. Colors are: 0=Black, 1=Blue, 2=Green, 3=Cyan, 4=Red, 5=Magenta 6 = brn (or yellow if intensity is set), 7 = white. Hope this helps..... Steve . -- ---------------------------------------------------------------------------- steve.resnick@f105.n143.z1.FIDONET.ORG - or - apple!camphq!105!steve.resnick Flames, grammar errors, spelling errrors >/dev/nul The Asylum OS/2 BBS - (408)263-8017 IFNA 1:143/105.0
ts@uwasa.fi (Timo Salmi) (10/31/90)
In article <6558@uceng.UC.EDU> dsims@uceng.UC.EDU (david l sims) writes: > I want to use BIOS call 10H, function 09H (write attribute/character > at current cursor position). Register BL is supposed to hold the > attribute of the character that I want to write. However, I've > searched my BIOS manual high and low, and I can't find anything > describing this "character attribute." > > Does anyone know how this character attribute is defined? This may not be what you are looking for, but I'll list the information just in case. I have rather seen the term character attribute in the following context. In text mode the screen is stored in memory as character + character attribute pairs (80x25). The character attributes define the text color and background color for each position of the screen. The formula for the attribute is (ord(backgroundColor) shl 4) or ord(foregroundColor) using Turbo Pascal notation. ................................................................... Prof. Timo Salmi (Moderating at anon. ftp site 128.214.12.3) School of Business Studies, University of Vaasa, SF-65101, Finland Internet: ts@chyde.uwasa.fi Funet: gado::salmi Bitnet: salmi@finfun
lsalomo@hubcap.clemson.edu (lsalomo) (11/01/90)
From article <6558@uceng.UC.EDU>, by dsims@uceng.UC.EDU (david l sims): > I want to use BIOS call 10H, function 09H (write attribute/character at > current cursor position). Register BL is supposed to hold the > attribute of the character that I want to write. However, I've searched > my BIOS manual high and low, and I can't find anything describing > this "character attribute." > > Does anyone know how this character attribute is defined? > I'm using alpha mode only, but if > there's any information on graphics attributes as well, I would > appreciate having it. The attribute for a character is of the following format: Bit 7 6 5 4 3 2 1 0 Meaning bl bc bc bc fc fc fc fc where bl - blink if set bc - background color (0-7) fc - foreground color (0-15) Note that the high bit is the intensity bit, so 8-15 is actually the high intensity version of 0-7 You'll have to play with the colors to figure out the mapping. I do remember 0=black,6=brown,7=light grey,8=dark grey,14=yellow,15=white. Also note that there is a way to out() a specific number to the video chip to tell it to interpret the blink bit as an intensity bit, but I do not remember the details (consult the hardware tech. ref. for your machine). Cheers, Q - the "Q"uestor for knowledge (, a degree, etc.) lsalomo@hubcap.clemson.edu ibmman@prism.clemson.edu ibmman@clemson.clemson.edu ============================================================================= "Gee Wally, I think there's something wrong with the Beaver." =============================================================================
wjb@moscom.UUCP (Bill de Beaubien) (11/02/90)
In article <6558@uceng.UC.EDU> dsims@uceng.UC.EDU (david l sims) writes: >I want to use BIOS call 10H, function 09H (write attribute/character at >current cursor position). Register BL is supposed to hold the >attribute of the character that I want to write. However, I've searched >my BIOS manual high and low, and I can't find anything describing >this "character attribute." > >Does anyone know how this character attribute is defined? The attribute byte is defined as follows: bit 7 - blink, though can be background intensity if you're on an EGA or better, and use int 10h, service 3, subservice 3 to disable the blinking attribute. bits 4-6 - background color bit 3 - foreground intensity bits 0-2 - foreground color Bill -- Bill de Beaubien / wjb@moscom.com
Ralf.Brown@B.GP.CS.CMU.EDU (11/03/90)
In article <2352@moscom.UUCP>, wjb@moscom.UUCP (Bill de Beaubien) wrote: }The attribute byte is defined as follows: }bit 7 - blink, though can be background intensity if you're on an EGA or } better, and use int 10h, service 3, subservice 3 to disable the } blinking attribute. It can also be background intensity on a CGA, MDA, or Herc if you twiddle the appropriate bit in the 6845 CRT controller. -- UUCP: {ucbvax,harvard}!cs.cmu.edu!ralf -=- 412-268-3053 (school) -=- FAX: ask ARPA: ralf@cs.cmu.edu BIT: ralf%cs.cmu.edu@CMUCCVMA FIDO: 1:129/3.1 Disclaimer? | I was gratified to be able to answer promptly, and I did. What's that? | I said I didn't know. --Mark Twain