Multi-Amiga Flicker Fixer

[amiman99]

I have the same board, works OK for $35, not worth $160.

I put mine in Radio Shack box, added 9pin connector for Amiga RGB, and I'm using 25pin-9pin Amiga monitor cable.

Have problems with PAL resolutions.

[amiman99]

I was playing with this board again to see if I can get it to work in PAL and finally success.
The problem was with the H V Position and H V Size settings.
The main issue is that if you set the NTSC side first then the PAL will be screwed up. So I messed with settings in PAL resolution till I got good picture, then modified the settings that will work on NTSC side at the same time.
My setting for future reference:
H POS 56
V POS 16
H Size 48
V Size 59

So, not bad for $35.

[amiman99]

Where can I find one of these?
Tony
wa9yoz@arrl.net

Here and it's $32 with free shipping
http://www.ebay.com/itm/Arcade-Game-RGB-CGA-EGA-YUV-VGA-Video-Converter-HD-/330605923350
Just ask if it's V4.0.

[amiman99]

Most of us tinker with stuff, so it shouldn't be a problem make it work. Those that can't do it, must pay the price.

My original idea and this is how I made it, see pictures:
$32 GBS
$10 Case from Radio Shack
$5 DB9 connector
$5 5v 2A PS from Goodwill
Some cutting tools and sharp knife

Pin 1 - BLACK (GND)
PIN 3 - RED
PIN 3 - GREEN
PIN 5 - BLUE
PIN 7 - GRAY (SYNC)
This is made so that you can use your existing 1084 Amiga monitor cable.
There are some 1084 cables with DIN connector, with those you are out of luck.

[amiman99]

Any idea what happens if one of these is fed a genuine VGA signal, e.g. a productivity 640x480 screenmode? Does it pass it through unaltered? Thanks.

I just tried the Multiscan 31KHz 640x480 mode, and looks like it worked, but it was not perfect. The screen was shifter up from NTSC position, so the menu bar was not seen.
You need to play with screen controls to center the picture, also I noticed that the screen was getting brighter every few seconds.
Because Amiga can generate custom screen modes, it's kinda hard to pre-adjust all screen modes to work w/o some adjustments.
That's why I had hard time getting NTSC and PAL to work together. I have adjusted for a perfect picture using NTSC, but then PAL was screw up.
Also DBLPAL and DBLNTSC does not work, but you don't need it.

[amiman99]

You got ripped off.

The $5 DB9 is a worst case scenario, if I needed today at Radio Shack, I actually got it for FREE.
The 5V PS is also free from my LAB's IP Phone,the pricing is based on my local Goodwill store, and I dont think that I can find it locally any cheaper then that.:insane:

[amiman99]

The unit draws 400mA and max draw for the video port at 5V is 100mA http://old.pinouts.ru/Video/AmigaVideo_pinout.shtml
So, I would not recommend it.