Identification of display adapter

demolition · 31 December 2016, 00:48

Any good guess as to what this adapter is for?

It has Commodore part number 363796-01 but curiously I get no relevant hits at all on this number.

It comprises a male DE-15 on one side and a female DE-9 on the other side.

My own guess might be a VGA to EGA adapter so you could hook up your VGA monitor to some PC with EGA video card?

Pat the Cat · 31 December 2016, 01:01

Yes, but in the pre VGA days, most monitors had nine pins.

So it's more for hooking up a very old monitor to a display card with 15 pins.

Or the other way around - display card with 9 pins to a VGA monitor.

A lot of Commodore monitors used on Amigas had 9 pin D connectors.

idrougge · 31 December 2016, 01:15

Not EGA; it's for old multisync monitors with 9-pin connectors such as NEC Multisync II or Eizo 9060/9050.

Pat the Cat · 31 December 2016, 01:18

Quote:

Originally Posted by idrougge

Not EGA; it's for old multisync monitors with 9-pin connectors such as NEC Multisync II or Eizo 9060/9050.

Both. Some multisyncs had 9 pins rather than 15, that's true.

All EGA monitors had 9 pins.

The modern converters are a lot smaller.

https://www.amazon.co.uk/Trsans-C29M...N%3DB004XBRMSK

idrougge · 31 December 2016, 01:32

Yes, EGA had 9 pins, but EGA also used digital signalling, unlike VGA.

demolition · 31 December 2016, 08:01

The finger screws are located on the DE-15 connector so I would expect that you are meant to secure it on the back of some device having a female DE-15 connector such as a VGA monitor. The polarity is wrong to attach it to a VGA card.

idrougge · 01 January 2017, 06:16

VGA cards have a female DE-15 connector. VGA monitors, almost without exception, had an integrated cable back then. One notable exception is Idek/Iiyama's monitors, which were also sold by Commodore, but those had a DA-15 connector instead of DE-15.

demolition · 01 January 2017, 10:53

Quote:

Originally Posted by idrougge

VGA cards have a female DE-15 connector. VGA monitors, almost without exception, had an integrated cable back then.

You are right - I had them mixed up. So that would indicate it is probably meant to hook up a VGA graphics card to an EGA monitor, or maybe a multisync monitor with some 9-pin RGB input?
Can an old VGA video card output an EGA compatible signal in EGA mode?

idrougge · 01 January 2017, 20:20

You can't hook up a VGA card to an EGA monitor. It's for older multisync monitors and quite a few old plain VGA monitors as well.

31 December 2016, 00:48	#1
demolition Unregistered User Join Date: Sep 2012 Location: Copenhagen / DK Age: 43 Posts: 4,190	Identification of display adapter Any good guess as to what this adapter is for? It has Commodore part number 363796-01 but curiously I get no relevant hits at all on this number. It comprises a male DE-15 on one side and a female DE-9 on the other side. My own guess might be a VGA to EGA adapter so you could hook up your VGA monitor to some PC with EGA video card? Attached Thumbnails

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31 December 2016, 01:01	#2
Pat the Cat Banned Join Date: Dec 2016 Location: Nottingham, UK Posts: 481	Yes, but in the pre VGA days, most monitors had nine pins. So it's more for hooking up a very old monitor to a display card with 15 pins. Or the other way around - display card with 9 pins to a VGA monitor. A lot of Commodore monitors used on Amigas had 9 pin D connectors.

31 December 2016, 01:15	#3
idrougge Registered User Join Date: Sep 2007 Location: Stockholm Posts: 4,332	Not EGA; it's for old multisync monitors with 9-pin connectors such as NEC Multisync II or Eizo 9060/9050.

31 December 2016, 01:32	#5
idrougge Registered User Join Date: Sep 2007 Location: Stockholm Posts: 4,332	Yes, EGA had 9 pins, but EGA also used digital signalling, unlike VGA.

31 December 2016, 08:01	#6
demolition Unregistered User Join Date: Sep 2012 Location: Copenhagen / DK Age: 43 Posts: 4,190	The finger screws are located on the DE-15 connector so I would expect that you are meant to secure it on the back of some device having a female DE-15 connector such as a VGA monitor. The polarity is wrong to attach it to a VGA card.

01 January 2017, 06:16	#7
idrougge Registered User Join Date: Sep 2007 Location: Stockholm Posts: 4,332	VGA cards have a female DE-15 connector. VGA monitors, almost without exception, had an integrated cable back then. One notable exception is Idek/Iiyama's monitors, which were also sold by Commodore, but those had a DA-15 connector instead of DE-15.

01 January 2017, 20:20	#9
idrougge Registered User Join Date: Sep 2007 Location: Stockholm Posts: 4,332	You can't hook up a VGA card to an EGA monitor. It's for older multisync monitors and quite a few old plain VGA monitors as well.

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