MDA/CGA/EGA to VGA Converter Released!

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Re: MDA/CGA/EGA to VGA Converter Released!

Postby matze79 » 2018-4-14 @ 18:36

Nice Machine :)

now make a ISA Adapter :D, it just uses other Type of Slots.
GDR Stuff is really amazing :D
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Re: MDA/CGA/EGA to VGA Converter Released!

Postby dreamblaster » 2018-8-31 @ 13:32

3d printed enclosure coming soon, as well... stay tuned...
or contact me if you are interested, i will have a few early on,
and more in the webshop later

MCE2VGA_enclosure.jpg
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Re: MDA/CGA/EGA to VGA Converter Released!

Postby carlostex » 2018-9-02 @ 09:19

Nice!!
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Re: MDA/CGA/EGA to VGA Converter Released!

Postby dreamblaster » 2018-9-08 @ 07:33

MCE2VGA enclosure_1.JPG

MCE2VGA enclosure_4.JPG

MCE2VGA enclosure_3.JPG

MCE2VGA enclosure_2.JPG


early printout, what do you think ?
still some minor changes planned : somewhat larger screw holes in lid (I didnt have/find suitable screws)
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Re: MDA/CGA/EGA to VGA Converter Released!

Postby j^aws » 2018-9-08 @ 10:03

^^ Looks great as it is. The bold colouring - black and red (orange?), is very 80s. The only thing I would change is the size of the font, so that its more discrete. Otherwise, a fantastic job.
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Re: MDA/CGA/EGA to VGA Converter Released!

Postby dreamblaster » 2018-9-08 @ 11:50

j^aws wrote:^^ Looks great as it is. The bold colouring - black and red (orange?), is very 80s. The only thing I would change is the size of the font, so that its more discrete. Otherwise, a fantastic job.

thanks, yeah the design is deliberately 'unsubtle' or 'bold', including the font :lol:
yeah on the photo it looks orange, but the actual color is bright 'alarming' red
Visit http://www.serdashop.com for retro sound cards, MIDI PCB's, and video converters
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Re: MDA/CGA/EGA to VGA Converter Released!

Postby dreamblaster » 2018-9-28 @ 22:31

Okay, I have some enclosures available now, pm if interested :happy:
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Re: MDA/CGA/EGA to VGA Converter Released!

Postby awgamer » 2018-9-28 @ 23:09

Does it handle composite?
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Re: MDA/CGA/EGA to VGA Converter Released!

Postby dreamblaster » 2018-9-29 @ 08:01

awgamer wrote:Does it handle composite?

only RGBI input
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Re: MDA/CGA/EGA to VGA Converter Released!

Postby dreamblaster » 2018-10-20 @ 22:36

new, final 3d prints ready !
Attachments
BUTTONS2.jpg
OPENENCLOSURE.jpg
BOTTOM_LEGEND.jpg
ENCLOSURE_TOP2.jpg
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Re: MDA/CGA/EGA to VGA Converter Released!

Postby dreamblaster » 2018-11-10 @ 23:06

Youtube review by LGR : https://youtu.be/9SII7ujB3FY
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Re: MDA/CGA/EGA to VGA Converter Released!

Postby dJOS » 2018-11-10 @ 23:07

dreamblaster wrote:Youtube review by LGR : https://youtu.be/9SII7ujB3FY


Good review, what's the latest FW for these?

PS, I really must order your case for mine!
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Re: MDA/CGA/EGA to VGA Converter Released!

Postby dreamblaster » 2018-11-11 @ 00:06

dJOS wrote:
dreamblaster wrote:Youtube review by LGR : https://youtu.be/9SII7ujB3FY


Good review, what's the latest FW for these?

PS, I really must order your case for mine!


The latest good working firmware (as seen on LGR) is the one from github, from march 31st : https://github.com/lfantoniosi/mce2vga/ ... tput_files
I am now shipping out all boards with this version.

Earlier prototype PCB's may have had a different firmware (not intentional), and did not do composite mode correctly.
So if you have issues with composite mode, it makes sense to update to exactly this version - see also attachment (jic file from github)
Attachments
mce2vga.zip
(84.16 KiB) Downloaded 7 times
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Re: MDA/CGA/EGA to VGA Converter Released!

Postby dJOS » 2018-11-11 @ 00:20

dreamblaster wrote:
dJOS wrote:
dreamblaster wrote:Youtube review by LGR : https://youtu.be/9SII7ujB3FY


Good review, what's the latest FW for these?

PS, I really must order your case for mine!


The latest good working firmware (as seen on LGR) is the one from github, from march 31st : https://github.com/lfantoniosi/mce2vga/ ... tput_files
I am now shipping out all boards with this version.

Earlier prototype PCB's may have had a different firmware (not intentional), and did not do composite mode correctly.
So if you have issues with composite mode, it makes sense to update to exactly this version - see also attachment (jic file from github)



Cheers, I can't recall what version I put on mine, I'll have to fire up the blaster and update.
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Re: MDA/CGA/EGA to VGA Converter Released!

Postby chrisNova777 » 2018-11-14 @ 20:34

great news... i might actually get to use my ATI EGA Wonder card on my AM386DX40 afterall
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Re: MDA/CGA/EGA to VGA Converter Released!

Postby Anonymous Coward » 2018-11-16 @ 06:42

Does this device support multisync EGA modes like 640x480 and 800x600 etc?
Will the highways on the internets become more few?
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Re: MDA/CGA/EGA to VGA Converter Released!

Postby ibmapc » 2018-11-16 @ 21:40

Anonymous Coward wrote:Does this device support multisync EGA modes like 640x480 and 800x600 etc?

I can't get mine to work with anything above 640x350 using my ATI EGA wonder. I've been meaning to ask retrocanada76, the designer of this device, if the firmware could be modified to support those higher resolutions.
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Re: MDA/CGA/EGA to VGA Converter Released!

Postby carlostex » 2018-11-20 @ 22:36

The composite emulation also needs a little improvement, i need to post a couple of screenshots here to make that clear.
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Re: MDA/CGA/EGA to VGA Converter Released!

Postby retrocanada76 » 2018-11-23 @ 02:09

ibmapc wrote:
Anonymous Coward wrote:Does this device support multisync EGA modes like 640x480 and 800x600 etc?

I can't get mine to work with anything above 640x350 using my ATI EGA wonder. I've been meaning to ask retrocanada76, the designer of this device, if the firmware could be modified to support those higher resolutions.


640x480 and 800x600 are on the VGA spectrum. The device does not have memory enough for holding an entire frame. Unless you design a pass-through mode only converting the TTL to analog. But since I don't have one of these and I don't plan buying one I won't bother.

But there is an easier way to make an adapter for these modes, the VGA is 0.7Vpp so if this output is 6 bit like R1R0G1G0B1B0 all you do is to provide each line a 2 resistor in parallel:

R0 : 1500 ohm
R1 : 750 ohm

G0 : 1500 ohm
G1: 750 ohm

B0: 1500 ohm
B1: 750 ohm

The VGA has a 75 ohm impedance: 5V * (75 / (1500 + 75) + 5V * (75 / (750 + 75)) will give you 0.6926Vpp

The H and V sync are TTL on VGA so just connect them direct. This should work beautifully...
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Re: MDA/CGA/EGA to VGA Converter Released!

Postby ibmapc » 2018-11-23 @ 21:27

@retrocanada76 I made this sketch to see if I understand what you said. Is this right?
ega2vga.png

Of course I'd connect the Hsync, Vsync, and GND.
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