Vystem 0.2

shelter/lib/include/cpu/pic.h

@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: MPL-2.0
+#ifndef SH_LIB_PIC_H
+#define SH_LIB_PIC_H
+#include "std/stdlib.h"
+#define SH_PIC1_CMD 0x20
+#define SH_PIC1_DATA 0x21
+#define SH_PIC2_CMD 0xA0
+#define SH_PIC2_DATA 0xA1
+// Remap all PIC interrupts on interrupts vectors 32 to 47, leave only IRQ0 enabled
+void sh_pic_remap();
+// Unmask a PIC interrupt
+void sh_pic_unmask(sh_uint8 irq);
+// Mask a PIC interrupt
+void sh_pic_mask(sh_uint8 irq);
+// Send EOI to PIC
+void sh_pic_send_eoi(sh_uint8 irq);
+#endif