II don't know anything about the ps/2. But what I'm try to test now is what happens when interrupts are disabled but are unlocked in the 8259, then an interrupt triggered and then sti is invoked. I'll take a look at spice86 I took a look at your assembly code. It shouldn't work: You are sending …

Hello, This runs on Linux, can log everything, but it's not PC/XT, rather IBM PC with PS/2 compatibility: https://github.com/OpenRakis/Spice86 Right now it runs Betrayal at Krondor, Dune, Hero Quest, Cruise for a Corpse, Dune 2, and a few other games. I doubt that's what you want since it's not …

Hi, I'm looking for an PC/XT emulator that can produce a log/trace of all instructions invoked. Of course martypc and also my own can do so, but I would like to compare with others as well. Oh and it should run on Linux. I've been trying for most of the day but some are lost (capex86), some won't …

What assembler are you using? If you are targeting an 8088, in NASM at least, you'll want to include the CPU 8086 directive at the top of your code. You might think the assembler is just directly converting your assembly instructions to their bytecode, but frequently I see it trying to do clever …

Hello, I wonder: why does the following code not work on real hardware while in e.g. dosbox it does? jmp test_005_go test_005: dw $1199 test_005_go: mov si,#$0005 not word [test_005] mov ax,[test_005] cmp ax,#$ee66 jz test_005_ok hlt test_005_ok: In dosbox, the word at test_005 is NOT'd to $EE66, on …

Hi, To get to know C# a bit I decided to implement an IBM PC emulator (the 5150 system). So far it goes through bios up to the point of floppy disk access: DotXT, (C) 2023 by Folkert van Heusden Released in the public domain 301 016 KB OK 032 KB OK 048 KB OK 064 KB OK 601 ERROR. (RESUME = "F1" KEY) …