deanimator's latest activity

Yes, a 4K font ROM dump is a collection of 256 glyphs, 16 bytes each, of monochrome bitmap. With some googling around you should be able...

Certainly. You will need to swap the font ROM though, you won't do it programatically. Here's the MDA 9x14 charset in KEYBCS2, Russian...

... and just to be sure, write protect it. I once had a stealth boot virus in the MBR of a certain hard drive, infecting me a couple of...

Seconding @bitwhacker here with the lightbulb idea, naturally the bulb needs to be of incadescent type, but a higher wattage is...

Haha, well actually both the monitor receptacle and the power switch/fuse holder were originally encased behind a grounded sheet metal...

Continued from above: A full-length PC ISA card compared to the system cards. Minimum setup running Ruud's diagnostics. The...

An addendum to romanon's topic from almost ten years ago, avoiding thread necromancy and adding some technical quirks and details: one...

I think you know about this one already as I once used the parallel interface as a boot option, similar to what XTIDE has over the...

Is that a genuine SBPro or a clone? Inside the DOS test application, note down active base address, IRQ and DMA channel. Put those...

Here's a direct video and audio hookup from the real hardware Junior to a cheapo USB capture device (the RCA jack contains PC speaker...

"Uh... uhh.... Hwat we got heer is.... failure to emulate"... :) Of course not. Try switching to "rate" instead of "square wave"...

It's FASM. What kind of errors do you get?

Well, so I thought. If I wire in an unsigned 16bit mono sample and program the speaker timer output channel with 16 bit values each IRQ0...

Sadly I don't think so, it just doesn't have enough resolution - it's always speaker hard on or off. No dynamics to the sound, and since...

Yes, I have some rants about connecting an 8" drive to a PC on my blog here. It's quite a long read since there's no universal schematic...