BetaArchive Logo
Navigation Home Database Screenshots Gallery Image Uploader Server Info FTP Servers Wiki Forum RSS Feed Rules Please Donate
UP: 3d, 22h, 3m | CPU: 40% | MEM: 5228MB of 11487MB used
{The community for beta collectors}

Post new topic Reply to topic  [ 4 posts ] 
Author Message
 PostPost subject: Does a 640x200 16 color EGA driver exist for Windows 3.0 ?        Posted: Thu Nov 07, 2019 4:58 pm 
Reply with quote
Offline

Joined
Thu Nov 07, 2019 4:50 pm

Posts
2

Location
Wisconsin

Favourite OS
Windows 98se
Years ago I could swear I had 640x200 x16 colors running under Windows 1 on my IBM PC 5151 /5153 using a real IBM EGA card.

Does a driver exist for WINDOWS 3.0 that runs 640x200 16 color EGA?

This guy could use it

https://www.vogons.org/viewtopic.php?f=61&t=70158

Thanks
Ryan


Top  Profile
 PostPost subject: Re: Does a 640x200 16 color EGA driver exist for Windows 3.0        Posted: Fri Nov 08, 2019 3:17 pm 
Reply with quote
FTP Access
User avatar
Offline

Joined
Mon Feb 24, 2014 10:28 am

Posts
1577

Location
Slovenia

Favourite OS
5111
640x200x16 is mode 0Eh, you can use it with CGA monitor + EGA card or EGA monitor + EGA card (so called "EGA mode 1" or "EGA lo-res"). It's also supported by VGA, though the signal is different in that case (70Hz vertical sync).

The Windows 1.0 driver for this mode is EGALORES.DRV ("EGA with Enhanced Color Display or Personal Computer Color Display"). Don't know if there was ever a working driver for this mode for Windows 3.0, though.

_________________
Image

KRNL386 - my site about retro computing | My site about Windows 1.0 | My blog | 86Box Manager - my configuration manager for 86Box


Top  Profile
 PostPost subject: Re: Does a 640x200 16 color EGA driver exist for Windows 3.0        Posted: Fri Nov 08, 2019 5:03 pm 
Reply with quote
Offline

Joined
Thu Nov 07, 2019 4:50 pm

Posts
2

Location
Wisconsin

Favourite OS
Windows 98se
Thank you and sorry for any double post,
If I dig out my old PC I might have to see what Windows 3 does with an old Windows 1 driver


Top  Profile
 PostPost subject: Re: Does a 640x200 16 color EGA driver exist for Windows 3.0        Posted: Fri Nov 08, 2019 9:40 pm 
Reply with quote
Offline

Joined
Thu Aug 25, 2011 7:46 pm

Posts
70

Favourite OS
Ubuntu 10.04.3 LTS
I've just thrown this patch to EGA.DRV together which may help - at least it starts up for me on DOSBox, though I was only able to test in real mode (the stock Windows 3.0 EGA driver doesn't seem to work in my DOSBox in protected mode). I found it was best to configure Windows for CGA and then drop in the patched EGA driver.

Image

Code:
038b0:  b8 0e 00 cd 10      Mode set
038ba:  3c 0e b8 00 00      Mode check
00eb6:  c8 00            Y resolution
0143b:  c8 00            Y resolution
01441:  c8 00            Y resolution
037c4:  c8 00            Y resolution
037ea:  c8 00            Y resolution
03ce9:  c8 00            Y resolution
0d344:  bf c7 00         Y resolution

I can see at least one obvious to-do here: the aspect ratio isn't patched, so if Reversi works the counters would be oval.
ETA: Here's the additional patch for aspect ratio:
Code:
037e4:  f0 00 b4 00     Aspect ratio


Top  Profile
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 4 posts ] 




Who is online

Users browsing this forum: No registered users and 7 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  

All views expressed in these forums are those of the author and do not necessarily represent the views of the BetaArchive site owner.

Powered by phpBB® Forum Software © phpBB Group

Copyright © 2006-2019

 

Sitemap | XML | RSS