6812 REGULATOR ??

Hi, Adrian, did you try to use this board with the Aliexpress ISA-Expansion-Module for the Book8088 (witch I acquired on AliExpress for no taxes....)? I'm very interested to use it.....

Growing up, my first PC was a Leading Edge Model D.

Now we need VGA out from this beauty

OH WOW I KNOW THAT ADDRESS ON BEE CAVE ROAD WHERE THEY SOLD THESE! Ol’ Austin, man.

Very interesting little board. I must confess that this is the first time I have ever heard of it.

I have a few motherboards for the batteries have destroyed the keyboard port and keyboard controller chip circuits so if this could do USB keyboard that would be perfect

Thank you Adrian for a very thorough and informative review - I purchased on your recommendation

Humans are amazing. I can't even begin to imagine how complex this was to create.

I wish someone would build a universal software/hardware solution that provides an adapter for a Pi to plug into a PC diskdrive interface, HD interface, or even an IDE slot or serial port, and allow you to run a Pi, through the machine's existing input and output, pushing either text or pixels to the screen for the appropriate internal graphics specs (or providing video output that is far superior). This would effectively rejuvenate old hardware. While you're at it, make one that also works on retro machines like the Amiga, ST and ancient Macs. The Pi can emulate these classic machines faster than the original hardware with an even better spec. Who hasn't got an old PC or laptop or 5 that could be resuscitated for usage that way. I'd be happy to provide coding(C/C++) assistance on such a project. Worst case scenario is you can also default back to the pi providing SD storage for HD or even disk images.

Thanks for this review / walk through, Adrian :) What I'm seeing here is an excellent "first stop" for an ISA card to put in a resurrected XT / AT and get it going. - A "Swiss Army Knife" ISA card that will get one out of most jams. Certainly a "must have" for those restoring XTs. I think those dedicated RAM expansion and controller replacement cards still have a use-case in terms of performance / compatibility.

It needs a real time clock

Will this make my Packard Bell PACKMATE (PB800) 286 be available to install Windows 3.1? I can only install Windows 3.0 without any EMS/XMS memory.

I have the same monitor. It came off of an IBM Wheelwriter. I work on Selectrics and Wheelwriters. Some later Wheelwriter models came with these monitors and a swing arm that mounts to the back of the Wheelwriters. They were used by offices and realty stores. I am not sure but I think they were sold as an accessory to the public. Though most of the Wheelwriters that would accept this monitor already had displays built into the front lid. Thanks for the video because I am currently trying to figure out what is wrong with my IBM monitor. I really want to get it going

How to make your old XT work again? Just plug a Cray 2 supercomputer on the ISA bus!

I dont understand why the hell the power cables are always cut

14:24 - is that a missing RAM chip in the upper left? Maybe Parity? (Looks like 9 rows?)

throwing one in a Tandy 1000 would be great. they need a variant that you can add to a EX/HX. im hoping to find a 1000 RL like i had growing up, and would get this for it in a heartbeat.

Ressurecting EMS memory? Like WHY?? Lol - ok you might have some klunky/classic software that uses it ? Seriously though amazing achievement here - not sure what I'd want something that goes QUITE so retro, but wow I sure am impressed!

In case you or someone else is interested in what the 3 Opamps are doing .. the fisr one is a Sallen-Key-Highpass with an edge frequency of 1.2kHz, the second one a Sallen-Key-Lowpass with an edge frequency of 4.5kHz. So this limits the audio signal to the 2 frequencies, which according to your scope are (very, VERY roughly) 1500Hz and 3000Hz. The gain here is very low, most likely to compensate for the overlap of the 2 filters. The last one is a limiting amplifier, making a square of defined amplitude out if it.

How frickin cool is that? Pretty frickin cool!!

Hey, us power users will probably want all of these cards just for the fun of it.

Thanks for the review, Adrian. The card is already backordered on Texelec as of 5/20/2024. So they maybe had a day or two supply.

Load the Translater OS first.

The 286 supported high memory (HMA) because it supported memory above the first megabyte. If I remember correctly, 286 went up to 24 bits of address space. Not sure if that PicoMEM could support HMA though, as I'm not sure that A20 is brought out on that older 8 bit ISA bus. Theoretically, the traditional 8086 could have supported high memory if Intel had exposed A20. HMA works by setting a segment register to FFFF, and offsetting past the end of the first megabyte for up to 65520 bytes of memory above the first megabyte. However, because the 8086 doesn't have A20, that address space wraps to the low 64. PC compatible machines that have a CPU with an A20 line also typically have a fabulous hack to enable the A20 line in their chipset so they can reproduce the traditional wrap to address 0 behavior for the HMA. This is traditionally done using an AND gate attached to the 8042 keyboard controller. I believe Compact (or someone) created a "fast A20" hack that does it through I/O port 92h. There was a patent on using port 92h to enable A20 for years; not on the hardware implementation, but on writing to the I/O port in software!

Ypu need faster ram to hold a higher overclock

when ya got great baseball players playing great baseball, well that is great baseball, but if you got great baseball players playing regular baseball, then that is just regular baseball.

"Old serial mouse"... well that is what my serial to ps/2 adapters are for... hmm, now where did all of my ps/2 mice go? No problem, that is what my ps/2 to USB adapters are for :)

For years I was looking for such an "all in one" solution for the Schneider (Amstrad) PC1512 I inherited after my father sadly passed away in 2021. This is a very nostalgic machine for me as this was the first time, I ever played videogames together with my dad, while he used this PC mostly to program in Turbo Pascal etc. Should also be a nifty solution for backing up all those files that are for sure soon lost to time because of those aging floppys and floppy drives (the PC1512 I have here only came with dual 5 1/4" floppy drives and no HDD).

Like the PicoGUS, this is cool, but does kinda blur the lines beteween real hardware and emulation. It does take some of the nostalgia out of it, compensating with convenience..

What an amazing card! I can’t wait to see the future development of it! Thanks for showing it to us!

Why wifi? I wish this thing had ethernet!!! At least me the option please!

I bought a couple of RP Picos a couple of years ago with the intention to create revolution. Did nothing with them. Very nice to see these gadgets using the RP2040. Wow!!

Support for Bluetooth keyboards and mice seems like a no-brainier if its possible to implement.

What's so great about this "New Tech for Old Tech" is that it enhances the Old Tech to work in a modern environment without detracting too much from the retro experience --- and makes retro computing more affordable by bypassing the high prices of rare cards and peripherals. (No wonder Adrian is so enthusiastic about this project!)

FAT caching: he should make sure to cache both copies of the FAT, because DOS duplicates it and writes the data twice, making everything twice as slow as it could be. I once wrote a cache TSR for fun to speed up floppy access, and was surprised that DOS would always write stuff behind the cached region, only to find out about that second copy.

Buy from me - you'll get a non broken and fully configured machine with tons of games ;)

27:02 I had to listen to that twice. Dos would be using FAT16, which has a 2GB partition limit, and this is what I thought you were referring to the first time I listened. FAT32 has a 4GB file size limit, so would give you a 4GB hard limit for hard drive image. So yes, what you're saying is right, assuming your SD Card is format to FAT32.

I do have to wonder if a future incarnation could be the whole PC.

I see the jungle chip supports RGB out. It would be good to see a SCART input added to this set 😊

There’s a picoMem app for that! 😂

I bought a similar model from the same company. They sell a decent probe too. I troubleshot my Ecoflow AC output with it. Got them to release a software update to fix it. I replace electrolytic caps all the time. They are infamous for failing after 15+ years. Why do I have the urge to play "Skate or Die!" now? 😀

Maybe I'm strange, but I like loud fans and loud whirring hard drives on my vintage computers... Makes them sound like a living beast!