Re: Commodore to S-Video or HDMI video?

From: Terry Raymond <>
Date: Thu, 19 Jul 2018 12:48:02 -0600
Message-ID: <>
Hi Anders,

That's okay please excuse my terrible memory.

Just using normal  basic displays fine,
adding a cartridge powering on No display. (With modern TV)
BTW my Vic may be the latter board it has the Din connector to use a
Commodore monitor cable, Im not using the modulator connection.

I thought something was wrong with the computer so I swapped back to my
working 1084S (stereo) monitor with cartridge plugged in that displays
and powers up just fine.

Again I'm in the USA using NTSC video 🙂

So something there that the signal is different on these modern TV's
I see what you're saying wasnt supported yet on the Vic-20.

I do have the earlier VIC-20 that has the funky 2pin power connector I
might see what it does with a cartridge, etc on my modern flat screen TV.

Thank you,

Terry R.

On Thu, Jul 19, 2018, 3:19 AM Anders Carlsson <>

> Ruud Baltissen wrote:
> > I remember having troubles with the older VIC-20 boards regarding the
> > video, even on my CM8233. At the end I had to use another output on
> > the 5-pins connector then the one normally used for the newer VIC-20s
> > and the C64. This was one of the reasons I hardly use the older
> > boards. The second reason is that I can use the same power supply for
> > the newer boards as for my C64.
> Yes, the VIC-20 has composite video output on two pins, the regular pin
> 4 (marked as Video Low in some manuals) and an extra signal on pin 5
> (marked as Video High). I think the Video High is a stronger signal
> (voltage?) meant for the RF modulator though it also has its own 5/6V
> power source in the same cable.
> On newer VIC-20CR models, there no longer would be any difference
> between Video Low and Video High, which would explain if your newer VIC
> worked better on your monitors and TVs.
> Wiring a cable with pins 2, 3, 5 instead of 2, 3, 4 would make it
> specific to early VIC-20, for displays where the Low signal may be too
> weak. I'll admit my two-prong VIC-20 with an early (?) 6561E video chip
> is firmly boxed away and for daily use I'm strictly using DIN-style CR
> models - both PAL and NTSC, but I might bring out my old two-prong and
> test with a regular composite video cable on various displays to
> determine if those yield a display or not.
> On a partly related note, I've got a PAL model CGL M5 (UK branded
> version of the Japanese computer Sord M5). That one displays a colour
> picture on most CRTs and some LCDs, except some otherwise excellent
> Samsung LCD TVs capable of handling both PAL and NTSC, but which are
> unable to produce colours from the M5 composite video signal. Then again
> I used to have a genuine Sord M5 in PAL version, which displayed in B&W
> on my 1084 but in colour on other displays so it could very well be a
> case of signal strength and whether the TV/monitor accepts very weak
> signals. At first I thought the Sord branded machine was Japanese NTSC
> but since it displayed in colour on TVs otherwise known to NOT handle
> NTSC composite video, that could not be the case.
> Best regards
> Anders Carlsson
Received on 2018-07-19 21:02:50

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