[ColorForth] Graphic compability

[Dirk Harms-Merbitz <dirk@xxxxxxxxx>]

I would certainly like to see a NASM port.

On Sun, Jun 16, 2002 at 08:11:37PM +0000, Jimmy S?derman wrote:
> 
> Regarding hints on that Graphics modification, ill have to get back to you, 
> becuase i havnt understood the complete source myself, far from it, so i 
> rather not mess with it yet, also a problem i code in NASM, not MASM (lots 
> of names there), timeconsuming.
> I just wante to get some wheels turning while im trying aswell.
> The more the merrier ;)
> 
> But what i do know is this, that snippet has never ever failed me this on 
> setting a graphics mode, even portables from 1999+ no problems, so its 
> defintly worth a shoot, & indeed opens up who can use ColorFORTH if its the 
> graphics thats the problem.
> 
> Btw. while im at it i want to mention a MASM2NASM converter wich i 
> unfortunly couldnt get to work as i wanted, anyone else up for it?
> NASM is nicer, cleaner, simpler syntax, and open source , wich follows 
> FORTH philosphy more too imho.
> With this said i hope many others than me would like to see a NASM 
> conversion of ColorFORTH.
> 
> Link: http://strawberry.cs.uwyo.edu/~cosc2150/files/m2nasm/
> 
> for the heck of it ill post other translators, those allways gets handy:
> http://www.niksula.cs.hut.fi/~mtiihone/intel2gas/
> http://membres.lycos.fr/placr/a2i.html
> http://www.bumba.net/~hmaon/a2i/
> 
> 
> 
> >From: Bob Shafer <bobsh@xxxxxxxxx>
> >Reply-To: ColorForth@xxxxxxxxxxxxxxxxxx
> >To: "ColorForth List Member"  <ColorForth@xxxxxxxxxxxxxxxxxx>
> >Subject: [ColorForth] Graphic compability
> >Date: Sun, 16 Jun 2002 12:21:18 -0700
> >
> >I've made a couple of quick attempts at fixing up the source to do things 
> >like you describe. Unfortunately, I really don't know what I'm doing, 
> >assembler-wise (more hints would be appreciated :-). It would be really 
> >neat if this modification would open colorForth up to more people. Has 
> >anyone tried this technique, got it working where colorForth already 
> >works, and then taken it to a machine where the original doesn't work, 
> >with success?
> >
> >At 09:46 AM 6/16/02 +0000, you wrote:
> >
> >>As i discovered there is more or less serious incompability with 
> >>graphiccards & ColorFORTH, and i hope ive spotted the "problem",
> >>i might be wrong though., Ok im now going rather technical, so here we go:
> >>
> >>It seem to use (VESA) VBE BIOS to set its graphicsmode, but hardware 
> >>probing for getting the actual startaddress of grahics.
> >>VBE utilizes a standarzed way to get to that, without probing, ill post a 
> >>snippet ill used succesfully in my own projects, and Chuck, or someone 
> >>else might wanna test it.
> >>
> >>As its a standard way since 1996-1998 and now works on 99.9% graphics 
> >>cards (S3 and onwards).
> >>
> >>Put into Boot.asm (i guess would need other changes too, so its just an 
> >>suggestion.)
> >>mov di,ModeInfoTable  ; 256 byte table needs reserved anywhere in memory.
> >>mov ax,04f01h
> >>mov cx,4114h     ; 800x600 ( use 4117h if you want 1024x768 )
> >>int 10h
> >>mov ax,04f02h
> >>mov bx,4114h     ; 800x600 ( use 4117h if you want 1024x768 )
> >>int 10h
> >>
> >>And now, later when in 32bit mode, and you want to have the 
> >>graphicaddress, just fetch 32bit-address at ModeInfoTable+20h, no 
> >>hardwarespecific probing needed.
> >>
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> 
> 
> 
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