Holy cow, a 386 with VGA and SoundBlaster on a $1 MCU?
I recall VICE emulating the Brotkasten on 386 PCs some thirty years ago, later UAE doing it for Amiga. How long til my currently running system (anno 2016) is being emulated?
dvdkon 1 hours ago [-]
It's really cool what can be done today with just an MCU that has sufficiently flexible IO. What's the performance like?
weinzierl 3 hours ago [-]
Looks like it can even run Windows 96. Incredibly cool. I'll have to try if it runs my old Slackware kernal 1.2.13 some time. I used it with a 4MiB, 25Mhz 386 DX back in the time, so it should.
fifilura 3 hours ago [-]
(slackware) Just need to find where you stored all 20 floppy disks...
weinzierl 2 hours ago [-]
I think it came with two 3.5" disks, a bootdisk and a rootdisk, as well as two CDs. One was the actual distro, the other a sunsite mirror.
At least that is what I remember and while that memory might be hazy I know exactly where my precious is.
rwmj 2 hours ago [-]
I definitely remember installing it off 20+ floppies onto a 386 back in the day. Most of the disks contained packages and you didn't need to install all of them though.
jalk 24 minutes ago [-]
IIRC Emacs took up a significant number of disks
xhrpost 2 hours ago [-]
Did not realize that Win95 can technically run on a 20Mhz 386DX.
st_goliath 1 hours ago [-]
> Win95 can technically run on a 20Mhz 386DX
s/technically/allegedly/
with a minimum of 4M RAM [1]. I have a machine with twice that clock and twice that RAM that a friends parents wanted to toss out[2]. I spent the better part of a day getting Windows 3.11 and Office 4.3 to run. Playing around with it for a bit, I highly doubt that Windows 95 would be anything but endlessly frustrating. I was not masochistic enough to try.
It "technically" can - i used Win95 on an AMD 386DX with 4MB of RAM back in the 90s for a little. Most of the time was spent waiting for the computer to do something while the HDD was constantly working.
The Pentium MMX with 32MB i replaced it with was MUCH faster, practically everything was instant.
weinzierl 2 hours ago [-]
Good question. I ran Slackware Linux and DOS 5.0 on mine. I think Win95 was my Pentium 100 MHz already so it sounds a bit sus, but the FAQ section of OP had items about Win95, that is where I got the idea from.
burstmode 2 hours ago [-]
Does it emulate RS232 ports and printer ports as well ? I did'nt find anything. Then it would be possible to reuse old embedded equipment.
kees99 53 minutes ago [-]
No, it doesn't.
Also this doesn't emulate ISA bus, where one could plug one of those "multi-io" cards to get rs232/printer ports.
Which is a shame. There are plenty of GPIO pins to fit full ISA on RP2350 (at least on "B" variant), and those GPIO are supposedly 5V-tolerant (with sufficiently recent silicon revision). So hardware-wise, it's just a matter of wiring up an ISA slot directly to the RP chip.
st_goliath 45 minutes ago [-]
> Then it would be possible to reuse old embedded equipment.
Unlikely, virtualization/emulation has been a thing well before this project and you can just buy USB to RS232 adapters. There are GPIO solutions for industrial PCs other than the parallel port. Or you can simply buy new industrial PCs which have those ports.
If you find an industrial appliance controlled by genuine old PC hardware that hasn't been replaced, the RS232 ports are the least of your concerns.
In my experience, such machines usually have something insanely proprietary plugging into a custom ISA card, and whatever is connected to it usually doesn't take too kindly if the bus timings are off. And neither does the accompanying bare metal software that relies heavily on timing loops and hardware peculiarities.
cold_pizz4 2 hours ago [-]
I love it!
The RP2350 is probably the most underrated microcontroller available today.
IshKebab 1 hours ago [-]
Overrated surely? It's a pretty bog standard MCU, no wireless support, mediocre deep sleep. I don't know why you'd pick it over an ESP32 or nRF5x.
The only standout feature is PIO which is definitely interesting but very niche. It's also patented so say goodbye to any portability or FOSS vibes. (If you want a FOSS version btw, check out https://baochip.com/)
If it didn't have the Raspberry name behind it nobody would even have heard of it.
willis936 51 minutes ago [-]
The PIO are pretty great and not niche. Almost any embedded application needs mixed signal interfaces. You could say embedded applications are niche, but not that embedded applications needing mixed signal interfaces.
A serious warning: read the RP2350 errata carefully. You may be better off buying old 2040 inventory.
jwrallie 2 hours ago [-]
Really cool, wondering if it can be ported to the PicoCalc.
Tepix 3 hours ago [-]
Time to dig up 386bsd
momocowcow 2 hours ago [-]
yes, but those screenshots are EGA
patrick_rtk 2 hours ago [-]
nice job
Rendered at 12:22:14 GMT+0000 (Coordinated Universal Time) with Vercel.
I recall VICE emulating the Brotkasten on 386 PCs some thirty years ago, later UAE doing it for Amiga. How long til my currently running system (anno 2016) is being emulated?
At least that is what I remember and while that memory might be hazy I know exactly where my precious is.
s/technically/allegedly/
with a minimum of 4M RAM [1]. I have a machine with twice that clock and twice that RAM that a friends parents wanted to toss out[2]. I spent the better part of a day getting Windows 3.11 and Office 4.3 to run. Playing around with it for a bit, I highly doubt that Windows 95 would be anything but endlessly frustrating. I was not masochistic enough to try.
[1] https://en.wikipedia.org/wiki/Windows_95#System_requirements
[2] https://goliath32.com/hw/machines.html#pc386
The Pentium MMX with 32MB i replaced it with was MUCH faster, practically everything was instant.
Also this doesn't emulate ISA bus, where one could plug one of those "multi-io" cards to get rs232/printer ports.
Which is a shame. There are plenty of GPIO pins to fit full ISA on RP2350 (at least on "B" variant), and those GPIO are supposedly 5V-tolerant (with sufficiently recent silicon revision). So hardware-wise, it's just a matter of wiring up an ISA slot directly to the RP chip.
Unlikely, virtualization/emulation has been a thing well before this project and you can just buy USB to RS232 adapters. There are GPIO solutions for industrial PCs other than the parallel port. Or you can simply buy new industrial PCs which have those ports.
If you find an industrial appliance controlled by genuine old PC hardware that hasn't been replaced, the RS232 ports are the least of your concerns.
In my experience, such machines usually have something insanely proprietary plugging into a custom ISA card, and whatever is connected to it usually doesn't take too kindly if the bus timings are off. And neither does the accompanying bare metal software that relies heavily on timing loops and hardware peculiarities.
The only standout feature is PIO which is definitely interesting but very niche. It's also patented so say goodbye to any portability or FOSS vibes. (If you want a FOSS version btw, check out https://baochip.com/)
If it didn't have the Raspberry name behind it nobody would even have heard of it.
A serious warning: read the RP2350 errata carefully. You may be better off buying old 2040 inventory.