EGA/VGA Graphics Deep Dive

is it possible to build an ISA hercules/MDA graphics card by hand? cool video btw

noice

you so much lack the showcase of connectors, wires and how they look :/

Great video! Thanks for sharing. Really liked the idea of EEPROM chip for logic decoding. Do you have a schematic diagram of this circuit board and a blog site?
I noticed that briefly shorting out the jumper pins P8 next to the GBS 8200 CPU resulted in haulting the CPU. This stopped a great deal of sync jittering with a C128 setup I had.
Keep up with the good work.

all good but imho 1920x1080 is "medium resolution mode", 3840x2160 being high resolution (for now...) and 1280x720 is new low res :)

Hi,
I’ve been trying to download a copy of the spreadsheet that has the covert to binary tab. I don’t see the tab.
Is there another version of spreadsheet that I don’t see on google docs ?

The two monitor modes were also used for CAD and GIS Software, you could use the Monochrome for the command window and the VGA monitor for your Drawing / Map.

Enjoyed this and your other 1640 videos. With SimCity I find it always crashes after a minute or two of play time on my 1640 with PC-ECD monitor (and the EGA 350 line DIP setting). Switching to a Mono screen and corresponding Hercules settings no crashing. Found this on a couple of boards now. I wondered if you had noticed the same?

I would have liked this video - but the number of likes is 486 and nobody should change that

I loved Ironman Super Offroad and I used to play it in CGA mode because I'm a masochist

Also EGA i had was able to output 640x480 but our EGA monitor was not able to handle it.

The tweaked Brown seems weird on how it was implemented but there just so many more things "that color" applied to when compared to dark yellow like trees for example. EGA was a weird standard overall though, expensive and hard to setup compared to CGA or VGA, a lot of trouble for less than impressive results in all honesty.
That's what makes the 64 color mode one of the biggest missed opportunities of that entire video generation. It seems like an issue that on paper isn't insurmountable but there was obviously next to nobody prioritizing or wanting to highlight this mode in terms of hardware sales. Regardless that's 48 colors almost never seen bitd. :(
The low res requirement you mentioned is likely why the Composite output wasn't included with EGA cards but really I think expansion on what CGA did with Composite was the versatility EGA lacked in retrospect.

I can't find the "funky" button..do you need edit access?

where to buy EGA 9pin to VGA 15pin converter? no one on ali or ebay

All the VGA RAMDAC's I tested on my breadboard supports 8 bits per red, green and blue why is yours 6 bit only ?

Lots of vga cards are 8088 compatible actually, the best ones should be the tseng and the trident ones

What is that tune in the background, I know I had it in my music collection some years ago, but I lost it :(

Hi,
If you want to play with a sound card on the 1640, test my MOD Player :)

put the schematic and de bin file, a like make one

Great content, but the delivery is way too fast to the point of annoyance, what's the rush?!:) Unless your intention is to have a limited audience:)

Amazing! Would be awesome if there was some sort of kit to replace the monitor/power supply on the 1512/1640 as places to get the monitor repaired are hard to find.

huh! amstrad 1640 has 1512 chip on board which is not used at all??!!!

I think the improved frame rate with VGA is probably a result of not having to write the data to 4 different bitplanes. VGA's Mode 13h is much faster in most cases to copy screen data to/from.

still had the legacy CGA chip from PC1512, but you should remember that it was a customer CGA with huge VRAM and able to run a custom 640x200x16 video mode (just like EGA could), so it might be nice to connect the chip's out... was even supported by a very few games.

Can you upload more 64 color mode example screenshots, if there are any games with it?

great video. how did you disable the internal card? i have an old vga card lying around and i would like to try to see if it outputs vga. i have a 1640 with a PC-ECD monitor.

keep up the good work.

didnt knew that ega could display all 64 colors

Amazing stuff man!

Great videos!!! What was the DIP switch when working with the VGA card? (10 ON, others OFF)

How the hell do you know all these thingss!?

cool

Fist my mom