| Author |
Topic |
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bearhugs28
Junior Member
USA
117 Posts |
 Posted - 29 Sep 2002 : 07:32:31
http://wired.hard.ru/data/pin_MacVideoToVGA.shtmlCan i just wire the connectors acording to ths list and use my PC monitor ? Bert |
ehurtley
New Member
USA
63 Posts |
Posted - 29 Sep 2002 : 15:37:10
quote:
http://wired.hard.ru/data/pin_MacVideoToVGA.shtmlCan i just wire the connectors acording to ths list and use my PC monitor ?
Almost. Your video card would have to support PC multisync monitors without and adapter. (Most NuBus video cards do not support PC monitors without a translator chip that is in most converters. That's also why some converters have dip switches. You fake it by telling the Mac that the PC monitor is a specific Mac monitor.) Proud Liberator of over 25 Macintoshes! |
Trash80toG-4
NIGHT STALKER
USA
2899 Posts |
Posted - 29 Sep 2002 : 15:44:17
quote:
Most NuBus video cards do not support PC monitors without a translator chip that is in most converters. That's also why some converters have dip switches. You fake it by telling the Mac that the PC monitor is a specific Mac monitor.
I've never heard of a chip in a converter, the ones I've seen are just switched connections to pull the sense pin signals high or low to encode the monitor type. It'd be easy to do using a ROM set up as an array of gates with fewer switches tho, so I wouldn't be surprised to find a chip in a lot of converters. AFAIK you can do anything any given VGA converter can do by shorting the proper lines together for any single resolution. Does that sync on green nonsense require more than that if you want to get around it?jt  ™.
Trash Hauler: call sign: eight-ball
C.O. AC-130H SpecOps 68kMLAAF |
dunbar
New Member
USA
87 Posts |
Posted - 30 Sep 2002 : 06:14:10
I'm interested here as well: eMachines to SVGA, Q650 to anything which is non mac, RGB to Q650/Pmac7500-100 (a major error on my part, I agree).One neat link I've found which describes which sense pins are where:
http://www.hardwarebook.net/ Hurry, this site always looks like it may tank at any moment... looked this way for the last 3 years, though. |
~Coxy
Leader, Tactical Ops Unit
Australia
2822 Posts |
Posted - 30 Sep 2002 : 06:24:00
In Australia, we can walk into any Jaycar or Altronics store and pick up a neato Mac->VGA converter for under 15 bucks.  ~Coxy - Leader, Tactical Operations Unit
Mayor of NuBus City v3.0
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shaktiman
Senior Member
United Kingdom
1226 Posts |
Posted - 30 Sep 2002 : 07:56:07
My Quadra 840av is attatched to my pc's old monitor, an svga Compaq 140. I bought an SVGA adapter to make this possible which cost me about £8. unless I'm mistaken, VGA came before SVGA & VGA is a simple RGB connection. I'm not the monitor expert but how complicated can the VGA be? well with the computer industry based on logic & compatibility as it was(not!) it shouldn't be a problem. shaktiman Quadra 840av, 128MB ram, 2MB vram, cd drive(caddy),1 caddy!:-)
1.2 gig drive, 4.23 gig drive
3 monitors 15" & 14" & 14" os 8.1 56k modem,
Stylewriter 1200, Umax 1220s scanner
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markymark
Junior Member
223 Posts |
Posted - 10 Nov 2002 : 00:25:40
Yes you can do a DIY mactovga adapter. I've done one myself and I've also modified it for the ridiculous connector used by the 6100 PPC macs etc. If you try to use a Mactovga adapter on the MacII models you need to get one that can sync on green or you can use a non sync on green adapter with a NEC MultiSync Monitor.
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~Coxy
Leader, Tactical Ops Unit
Australia
2822 Posts |
Posted - 10 Nov 2002 : 18:56:58
shakti, when we say Mac -> VGA we mean DB-15 to HDI-15, ie. VGA as in the style of connector.~Coxy - Leader, Tactical Operations Unit
Mayor of NuBus City v3.0
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Mac to VGA
68k of the Week: kastegir's PowerBook 180.