@AndresPlazaR A hard drive!! I remember the first family Amstrad had a 20MB hard-card as an add-on.
I think you might be earlier than DOS3 thinking about it if you're an 8088?
An interesting piece of history and I hope it lasts many more years.
@AndresPlazaR What a thing of absolute beauty! I preferred the 'orange' to the green VDUs.
A long time since I've seen that boot screen.
Got a spare old analogue monitor to test with? Anything with the VGA connector? Is it older than that? Thanks for sharing!
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@smy I checked with another monitor (EGA) and the image looks fine, so it is definitely my monitor and not the video card. But I don't understand much of CRTs, so it will be a slow/painful process.