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VGa_HaCK
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VGa_HaCK
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Text File
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1997-04-09
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2KB
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48 lines
@3
Amiga RGB -> PC VGA Hardware Hack
@1
- "What is this?", you might think.
As the title says it's simply a hardware hack for the serious Amiga
user, letting nearly anyone connect a "standard" PC-VGA monitor to the
Amiga-computer.
- "How's it done then?", you continue! =8^)
The trick is pretty simple if you know it! When the PC-monitor
"needs" a digitally HIGH sync-signal, the Amiga actually deliver a
digitally LOW sync-signal. And the other way. So to make those two
things work together you ... invert the sync-signals. The easiest
way to do this is to use an Intergrated Circuit (IC) called 74LS08N,
which contains 4 AND-gates. (If you're into digtal circuits you might
know what to do by now!!) Gate 1 has it's input's at pin 1 and 2 and
it's output at pin 3. By hardwiring pin 1 and 2, the output is
OPPOSITE (also called inverted) to the input. Phew ... A picture
explains more than 2063 bytes ... have a look at the enclosed picture
"VGA_Hack.IFF"!
- "Is it possible I'm going to brake something?"
Yes!! Let an experienced person do the soldering according to the
diagram. Most electronics will not stand the electrical shock of +5V.
Note that the author of this doc and diagram has NO responsibilities
for anything that goes wrong ... though, the hack should be pretty
easy to do!
Yeppers! The adaptor described in the IFF-file states that some
crossing might be needed. A friend (A4000-owner) to the author
(A1200-owner) uses HIS original VGA-converter, but was forced to build
a adaptor-cable. The cable is used to adapt the 15 pins (RGB-output)
to 9 pins (VGA-socket). It can also be used together with the
described converter. Though, WHEN USED WITH THE CONVERTER, CROSSING
IN THE ADAPTOR ISN'T NEEDED. This is already done in the converter.
- "Are you ever going to get finished with this doc?", you hopefully
ask!
This hardware hack was done by TranXeye / Nova Lythern, after trying
several other hacks. But I found this solution being the best. =B-»
And so do I hope that you people out there do ...
@4Traster.