VOGONS


First post, by Tronix

User metadata
Rank Member
Rank
Member

We have recently made a new ISA8 video card based on the old element base (triple intel 8275 CRT controllers), which can work only in text modes.

If anyone is interested, here are photos

P1140039.jpg
P1140040.jpg

Since this video card works only in text modes, this emulator was written for it. However, it works well in DosBox and possibly just with ordinary VGA video cards.

Original CGA screen:
skb-000.png

DosBox 80x50 mode:
turbo-003.png

Playing KARATEKA on real hardware:
photo-2022-01-06-20-01-47.jpg

YouTube AlleyCat DosBox footage: https://youtu.be/nVcuyrmCpcw

I don't know its real use without the original text-mode ISA8 video card, probably just for lulz. So, you firts run CGAEMU.COM then run your CGA game. For remove emulator from memory specify "-" switch ("CGAEMU.COM -")

Direct download link: https://github.com/Tronix286/cgaemu/blob/master/CGAEMU.COM
Repo with sources: https://github.com/Tronix286/cgaemu

Reply 1 of 2, by ViTi95

User metadata
Rank Member
Rank
Member

Using half width characters you can double the resolution vertically or horizontally (80x100, or 160x50), maybe it makes the screen look better. It will be a little bit slower, but for sure will look better!

Reply 2 of 2, by Tronix

User metadata
Rank Member
Rank
Member
ViTi95 wrote on 2022-01-07, 09:21:

Using half width characters you can double the resolution vertically or horizontally (80x100, or 160x50), maybe it makes the screen look better. It will be a little bit slower, but for sure will look better!

I am using half-width and half-tall characters together (ascii 220 and 221). The same alghorithm named "HalfBlockColor" here: https://sol.gfxile.net/textfx/index.html