Hi @manawyrm! How is this project going? I have been playing with the CH367 development board and the Arstech USB2ISA adapter. They both seem to work to some extent but the software is absolutely awful. The Arstech adapter seems quite nice from a hardware perspective but all the source and drivers …

That is very cool! Well done! 😀

I ended up using RIFS and implemented a custom server in the emulator that maps to the host filesystem. It kinda works 😁

Thanks for the tips! I currently have network support so my solution at the moment is something similar to what @superfury is suggesting. I think VBSF is kind of what I was looking for. Thank @javispedro1 for pointing me in that direction. 😀 Thanks!

Hi! I would like to make my and others lives easer when it comes to transfer files in and out of my emulators guest environment. There are at this point several ways to do this but none of them are very convenient. Preferably I would like to be able to mount a virtual drive in DOS that maps to a …

Hi! Thanks, Win31 was an amazing milestone for me. :D It is still far from being "the most accurate" XT emulator. But hopefully the CPU emulation should be fairly good. But I have to add more tests for the hardware validator to be affective. So far I have relied on the 186 test and those only takes …

Just to share how I ended up doing in the end. I created a hardware validator using a real 8088 and then use that in conjecture with the 186 tests @superfury mentioned. https://cdn.hackaday.io/images/7721191646056848126.jpg https://cdn.hackaday.io/images/1818451646056887854.png https://cdn.hackaday. …

Hi! Thanks! That would be very helpful. But the main point for me is that it has be be freely distributable. (Preferably open-source.) I created a branch here . Where I have added some AT experiments. Currently I'm testing some A20 stuff. But writing a full AT BIOS is going to be a lot of work. :D …

Hi! Thanks for your answer, and for the links. Make sense that there are no opensource ones done if AT/286 machines (to a large extent) utilizes integrated chipsets. Guess I will build and test the emulator with IBM's proprietary BIOSes for now then. Perhaps it would be an option to extend the Super …

Is there any open-source (or freely distributable) AT/286 BIOSes out there? I know about Super PC/Turbo XT BIOS for PC/XT and V20 machines and there is SeaBIOS but as far as I can tell it won't work on 16bit CPUs.

Yea, the 186 tests got me to a point where FreeDOS runs (seemingly flawless). So does most games that I have tested. But I can still not boot any version of MS-DOS or Windows 3.0 yet. So there are obviously still issues with my emulator. My current approach is to do what @superfury suggested. …

I just want to give you a special thanks @superfury for suggesting the 186 tests. It helped me a lot with the final piece of the puzzle. My emulator is now released here here. It is still a long way from UniPCemu but I'm quite happy with how it has turned out so far. 😉 Thanks!

Thanks! The 186 tests looks promising. I think I will start with that.

Hi! I'm currently working on a small PC/XT emulator as a learning experience and so far things has progressed quite nicely. :) Currently I'm at a state where I handle all 8086 instruction (with only one or two exceptions) and I'm using a modified version of Adrian Cable's BIOS for his 8086tiny …