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-rw-r--r--kernel/memlayout.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/memlayout.h b/kernel/memlayout.h
index 6d86166..e8c9aab 100644
--- a/kernel/memlayout.h
+++ b/kernel/memlayout.h
@@ -22,6 +22,7 @@
#define UART0 0x10000000L
#define UART0_IRQ 10
+// virtio mmio interface
#define VIRTIO 0x10001000
#define VIRTIO_IRQ 1 // really the first of 8 units