Initial DOS VM tooling setup

.qemu/install.ps1

@@ -0,0 +1,28 @@
+param()
+
+$ErrorActionPreference = 'Stop'
+$qemu = Get-Command qemu-system-i386.exe -ErrorAction Stop
+$disk = Join-Path $PSScriptRoot 'freedos.qcow2'
+$iso = Join-Path $PSScriptRoot 'FD14LIVE.iso'
+
+if (-not (Test-Path -LiteralPath $disk)) {
+    throw "Missing $disk. Create it first with: qemu-img create -f qcow2 .qemu\\freedos.qcow2 2G"
+}
+if (-not (Test-Path -LiteralPath $iso)) {
+    throw "Missing $iso. Run .qemu\\setup.ps1 first."
+}
+if (Get-NetTCPConnection -State Listen -LocalPort 4444 -ErrorAction SilentlyContinue) {
+    throw 'QEMU monitor port 4444 is already in use. Stop the existing VM first.'
+}
+
+& $qemu.Source `
+    -machine pc,usb=on `
+    -cpu pentium3 `
+    -m 64 `
+    -drive "file=$disk,format=qcow2,if=ide,index=0,media=disk" `
+    -drive "file=$iso,media=cdrom,readonly=on" `
+    -nic user,model=ne2k_isa `
+    -monitor "tcp:127.0.0.1:4444,server=on,wait=off" `
+    -serial null `
+    -boot order=d `
+    -display default