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- From: heyes@dadev.cebaf.gov (Graham Heyes)
- Newsgroups: comp.sys.mac.hardware
- Subject: B&W tv to Mac Video any ideas?
- Message-ID: <HEYES.92Sep14151946@dadev.cebaf.gov>
- Date: 14 Sep 92 20:19:46 GMT
- Sender: usenet@murdoch.acc.Virginia.EDU
- Distribution: comp.sys.mac.hardware
- Organization: Continuous Electron Beam Accelerator Facility
- Lines: 25
-
- The internal connector between the Logic board of
- a Mac plus/512 etc has three signals video signals
- video ,horizontal sync and vertical sync. I know
- how to make these drive a TTL style monitor for
- example SAMSUNG as used by IMB PC (sorry for the
- bad language) I was wondering if I could make a
- simple circuit to alow me to use a monochrome tv,
- I guess the picture quality could be lousy but it
- would be nice to try.
-
- I have a monochrome television with an
- input marked "video", i.e. not the normal antenna
- input. Does anyone know what it would take to
- make a simple circuit to combine the three signals
- from the Mac and make it drive the tv's video
- input.
- A fax/photocopy of a diagram of how to do
- it would be a great help. I made something similar
- a long time ago to provide bitmapped video display
- for a "homebrew" 8080 based machine.
- Unfortunately that was 13 years ago and I've
- forgotten what was involved.
-
- thanks for help/advice,
- Graham Heyes.
-