From af8d5aa4538ac71f11a5418ef94ae478868a0484 Mon Sep 17 00:00:00 2001
From: salmonik <salmonik@tuta.io>
Date: Fri, 31 Jul 2026 02:28:10 +0200
Subject: interrupts: IDT, PIC remap, PIT timer, PS/2 keyboard IRQ
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- IDT with 256 entries, loaded via lidt (CS read from current context)
- PIC 8259A remapped to vectors 32-47, timer+keyboard IRQs unmasked
- PIT channel 0 at ~100 Hz (mode 2, rate generator)
- PS/2 keyboard IRQ (IRQ1 → vector 33): reads port 0x60, pushes byte
  to lock-free SPSC ring buffer
- Timer IRQ (IRQ0 → vector 32): sends EOI, increments tick counter
- ps2::poll_key() now reads from ring buffer with cli/sti+hlt for
  race-free sleep (instead of busy-polling the data port)
- build.rs: use idiomatic Result<_, Box<dyn Error>> return type
- tools/qemu.sh: fix SC2207 shellcheck warning
---
 tools/qemu.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'tools')

diff --git a/tools/qemu.sh b/tools/qemu.sh
index 428954f..b75bed4 100755
--- a/tools/qemu.sh
+++ b/tools/qemu.sh
@@ -81,7 +81,7 @@ QEMU_CMD=(
 [ -n "$GUI_FLAG" ] && QEMU_CMD+=("$GUI_FLAG")
 if [ -n "$DEBUG_FLAG" ]; then
 	# Split the flag string safely into words
-	read -ra dbg <<< "$DEBUG_FLAG"
+	read -ra dbg <<<"$DEBUG_FLAG"
 	QEMU_CMD+=("${dbg[@]}")
 fi
 
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