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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: jasenr on December 04, 2024, 05:07:05 PM
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Hello, I am trying to figure out if there is a cable for this or what the pinout would be to make one. I need to go from a PC with VGA to a real 1084S monitor. I have an UnAmigaITX board that I would like to use a real 1084S with. Thanks!
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As far as I know it won't be possible without some kind of conversion. The 1084 doesn't support the 31 kHz that VGA outputs.
But I'm not 100% sure about this.
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An adapter is possible, there were commercial ones too, but the 1084 only supports 15kHz, anything PC-like could even do damage afaik.
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Back in the day (early 1990s) I remember connecting the output of a CGA graphics card to the 1084s, I think by building a custom cable for it, and using a secondary TTL input my specific 1084s had (not all of them have it). I no longer have this 1084s sadly.
But yes, I think SVGA refresh rates and resolutions are out of the question. If you really want to use the 1084s with something modern, your best bet would be a SVGA/HDMI to SCART/Composite converter. Depending on the version of the 1084s you have, you may need an additional scart-to-9-pin adapter (or round barrel adapter). IMHO it's too much hassle for what it's worth but can think of scenarios where it makes sense (physical space considerations, a preference for a CRT to use with emulators etc.).