Questions tagged [vga]
For questions related to VGA signals, sources or receivers
55 questions
1 vote
0 answers
175 views
ntsc -> modern video interfaces [closed]
What is a recommended way nowadays to add a more modern video output options to a (fpga based) project that outputs ntsc signal? Getting ntsc output right is important for me. Having any of the other ...
- 827
5 votes
2 answers
1k views
Apple IIgs to VGA adapter
Are the Apple IIgs to VGA adapters straight through or have some electronics? I see DB15 to VGA adapters on ebay for various prices, but I dont know if I need anything in particular. Will any of ...
- 573
13 votes
3 answers
3k views
Why does PC video memory base address change depending on video mode?
It is rather well-known that, with VGA-compatible PC video adapters, in black-and-white text modes video memory is available at linear address 0xB0000, in colour text mode at address 0xB8000, while in ...
- 27.4k
41 votes
4 answers
11k views
Why were those colors chosen to be the default palette for 256-color VGA?
Although subjective, I believe I'm not the only one considering default VGA 256 color palette to be hideous and ugly. What is the story behind this, why were these particular colors chosen?
- 2,893
14 votes
1 answer
2k views
What are the blinking rates of the caret and of blinking text on PC graphics cards in text mode?
PC display adapters in text mode usually show a blinking cursor on the screen, often in the shape of a bar appearing under the character. Additionally, text may be made to blink by setting an ...
- 27.4k
18 votes
5 answers
4k views
What is the most accurate way to map 6-bit VGA palette to 8-bit?
AFAIK VGA mode 13h palette has only 64 possible colors (6-bit) per channel. One obvious way to map those 64 colors to 256 colors is to multiply them by 4 (since 4 * 64 = 256): 8_bit = 6_bit * 4; This ...
- 699
5 votes
1 answer
663 views
Is it possible to connect a modern monitor to an 1982 electrical typewriter?
A friend of mine has an electrical typewriter Triumph-Adler BSM 100 SC which is roughly from 1982 (as this site says). The original tube monitor is faded and it's hard to read anything. The VGA video ...
- 5,490
5 votes
1 answer
479 views
10 pin --> 26 pin VGA controller pinout and Card compatibility with American Megatrends Super Voyager VLB-III
I'm trying to test an old PC which controls a ABB Bomem FTIR Spectrometer (DA&). The internal PC for this instrument is an American Megatrends, Inc. Super Voyager VLB-III ISA Motherboard https://...
- 53