ISR & IRR defines

3 years ago · 940b7e5751
parent 4bfd2b6b1d
commit 940b7e5751
2 changed files with 6 additions and 0 deletions
--- a/kernel/pic.c
+++ b/kernel/pic.c
@ -32,6 +32,7 @@ void pic_remap(uint offset_1, uint offset_2) {
 }

 // disable the PIC
+// will probably never use this.
 void pic_disable() {
 	outb(PIC1_DATA, 0xff);
 	outb(PIC2_DATA, 0xff);
--- a/kernel/pic.h
+++ b/kernel/pic.h
@ -11,6 +11,7 @@
 #define PIC2_CMD	PIC2
 #define PIC2_DATA	(PIC2+1)

+// ICWx
 #define ICW1_ICW4		0x01
 #define ICW1_SINGLE		0x02
 #define ICW1_INTERVAL4	0x04
@ -25,6 +26,10 @@

 #define ICW_INIT_MASK	(ICW1_INIT | ICW1_ICW4)

+// ISR & IRR
+#define PIC_R_IRR		0x0a
+#define PIC_R_ISR		0x0b
+
 // Ints
 #define PIC_EOI	0x20 // End-of-interupt