Benham Top/Disk color software
Benham Top/Disk color software
Updated, now as a "ZXPand Organizer" project.
Regards;
Greg
Updated 10/16/19
Regards;
Greg
Updated 10/16/19
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- Benham.zip
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Last edited by GCHarder on Wed Oct 16, 2019 9:50 pm, edited 2 times in total.
Re: Color software for standard 16K ZX81
that is interesting, on Eightyone emul and LCD monitor, i'm pretty sure i could see blue, light blue at edges and a very dark blue in solid spaces, however on real hardware and a monochrome monitor i could see nothing but white, black and greys
Regards Andy
Regards Andy
what's that Smell.... smells like fresh flux and solder fumes...
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Re: Color software for standard 16K ZX81
I'm wondering if this effect takes advantage of the bandwidth limitations of colour composite video signals, where some frequencies of the luminance signal fool the colour decoder circuitry in the colour monitor or TV.
However, that would not explain the effect on a emulator running on VGA or a digital connection
Of course, a monochrome CRT display has no colour circuits to be fooled. So the only possible effect would be to fool the human eye. This is apparently possible, but that's all I know...
Mark
However, that would not explain the effect on a emulator running on VGA or a digital connection
Of course, a monochrome CRT display has no colour circuits to be fooled. So the only possible effect would be to fool the human eye. This is apparently possible, but that's all I know...
Mark
ZX81 Variations
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer Amp
Standby alert
There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
Looking forward to summer later in the year.
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer Amp
Standby alert
There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
Looking forward to summer later in the year.
Re: Color software for standard 16K ZX81
Doesn't work for me then again neither does 3D TV!
Re: Color software for standard 16K ZX81
I tested with real hardware: a B/W CRT and 2 colour LED displays: no colour
I testet in 50 Hz video mode ("PAL") and will retest in 60 Hz mode later ("NTSC": Never The Same Colour ) ...
Siggi
I testet in 50 Hz video mode ("PAL") and will retest in 60 Hz mode later ("NTSC": Never The Same Colour ) ...
Siggi
My ZX81 web-server: online since 2007, running since dec. 2020 using ZeddyNet hardware
http://zx81.ddns.net/ZxTeaM
http://zx81.ddns.net/ZxTeaM
Re: Color software for standard 16K ZX81
Same result in 60 Hz (NTSC) mode
But I have used a Zeddy with composite video output. Might it be caused by the modulator and is only visible on a TV with RF connection?
Siggi
But I have used a Zeddy with composite video output. Might it be caused by the modulator and is only visible on a TV with RF connection?
Siggi
My ZX81 web-server: online since 2007, running since dec. 2020 using ZeddyNet hardware
http://zx81.ddns.net/ZxTeaM
http://zx81.ddns.net/ZxTeaM
Re: Color software for standard 16K ZX81
siggi wrote:Same result in 60 Hz (NTSC) mode
But I have used a Zeddy with composite video output. Might it be caused by the modulator and is only visible on a TV with RF connection?
Siggi
No I tried both R/F and composite and no luck at all but as I posted earlier 3D TV doesn't work for me either so probably a brain malfunction.
Re: Color software for standard 16K ZX81
So maybe it's necessaty to set the brain to 3.25 Mhz and the date to 1981
Siggi
Siggi
My ZX81 web-server: online since 2007, running since dec. 2020 using ZeddyNet hardware
http://zx81.ddns.net/ZxTeaM
http://zx81.ddns.net/ZxTeaM
Re: Color software for standard 16K ZX81
siggi wrote:So maybe it's necessaty to set the brain to 3.25 Mhz and the date to 1981
Siggi
Re: Color software for standard 16K ZX81
Since it's an optical illusion I would've thought that just fine tuning the rotation rate faster or slower would get it to work on other set ups. Apparently not. I have gotten colors, mostly burgundy red, on my LCD computer monitor using EO as well a the old color CRT shown in the original post. Well, maybe it's the elevation that's important thinner air or something. I guess you can use them as hypnotic disks.
Regards;
Greg
Regards;
Greg