For Beebs and Elks I normally only use RGB via the 6 pin DIN. I have various TVs/monitors that accept analogue RGB video. The TVs are connected via SCART.
For testing, I sometimes use the Beebs monochrome composite video signal.
For other "retro" computers, I use the best quality video that the computer has available. This ranges from digital or analogue RGB "15kHz" video (including Atari ST range, Sinclair QL, ZX Spectrum 128/+2/+3, Amstrad CPC), S-Video (Commodore 64, 128), monochrome composite (ZX80, ZX81, Video Genie), colour composite (Memotech MTX, ZX Spectrum 48K/+).
Hence my preference is analogue RGB "15kHz" video.
I currently only use VGA (or SVGA) for Arcs, Atari ST range (hi-res mode) and PCs.
HDMI is only directly used by a Spectrum Next. Or via a analogue RGB to HDMI converter.
Some monitors that have separate vertical and horizontal sync inputs will actually work if you feed a composite/combined sync in on the horizontal sync input.
Sync on green equipment is not very common for consumer gear. These monitors are often connected by three coax cables fitted with BNC connectors.
In terms of connectors, a DE-9 would be my choice for analogue video. That's if people don't mind having adaptor leads. Such a connector could carry:
1 - Red video
2 - Green video
3 - Blue video
4 - Horizontal sync
5 - Vertical sync
6 - Monochrome composite (S-Video luminance)
7 - Colour composite (S-Video chrominance)
8 - +12V (for SCART signalling)
9 - 0V/GND
DE-9 "NEC standard"
1 - Red video
2 - Green video
3 - Blue video
4 - Horizontal sync
5 - Vertical sync
6 - 0V/GND
7 - 0V/GND
8 - 0V/GND
9 - 0V/GND
DE-9 CGA pin-out
1 - 0V/GND
2 - 0V/GND
3 - Red video
4 - Green video
5 - Blue video
6 - Intensity
7 -
8 - Horizontal sync
9 - Vertical sync
Oh, and I like BNC connectors. BNC to phono adaptors are available if you want to use phono terminated cables.
Also the Beeb is not the only computer to use a BNC connector for it's video output.
Mark
For testing, I sometimes use the Beebs monochrome composite video signal.
For other "retro" computers, I use the best quality video that the computer has available. This ranges from digital or analogue RGB "15kHz" video (including Atari ST range, Sinclair QL, ZX Spectrum 128/+2/+3, Amstrad CPC), S-Video (Commodore 64, 128), monochrome composite (ZX80, ZX81, Video Genie), colour composite (Memotech MTX, ZX Spectrum 48K/+).
Hence my preference is analogue RGB "15kHz" video.
I currently only use VGA (or SVGA) for Arcs, Atari ST range (hi-res mode) and PCs.
HDMI is only directly used by a Spectrum Next. Or via a analogue RGB to HDMI converter.
Some monitors that have separate vertical and horizontal sync inputs will actually work if you feed a composite/combined sync in on the horizontal sync input.
Sync on green equipment is not very common for consumer gear. These monitors are often connected by three coax cables fitted with BNC connectors.
In terms of connectors, a DE-9 would be my choice for analogue video. That's if people don't mind having adaptor leads. Such a connector could carry:
- digital or analogue RGB ("15"KHz or "31"KHz)
- Monochrome composite
- S-Video
- Colour composite
1 - Red video
2 - Green video
3 - Blue video
4 - Horizontal sync
5 - Vertical sync
6 - Monochrome composite (S-Video luminance)
7 - Colour composite (S-Video chrominance)
8 - +12V (for SCART signalling)
9 - 0V/GND
DE-9 "NEC standard"
1 - Red video
2 - Green video
3 - Blue video
4 - Horizontal sync
5 - Vertical sync
6 - 0V/GND
7 - 0V/GND
8 - 0V/GND
9 - 0V/GND
DE-9 CGA pin-out
1 - 0V/GND
2 - 0V/GND
3 - Red video
4 - Green video
5 - Blue video
6 - Intensity
7 -
8 - Horizontal sync
9 - Vertical sync
Oh, and I like BNC connectors. BNC to phono adaptors are available if you want to use phono terminated cables.
Also the Beeb is not the only computer to use a BNC connector for it's video output.
Mark
Statistics: Posted by 1024MAK — Wed Mar 19, 2025 12:51 am