1 files changed, 0 insertions, 80 deletions
diff --git a/boot/pic.asm b/boot/pic.asm
deleted file mode 100644
index 5724af6..0000000
--- a/boot/pic.asm
+++ /dev/null
@@ -1,80 +0,0 @@
-;************************************************************************
-; Map the 8259A PIC to use interrupts 32-47 within our interrupt table
-;************************************************************************
- 
-%define ICW_1 0x11				; 00010001 binary. Enables initialization mode and we are sending ICW 4
- 
-%define PIC_1_CTRL 0x20				; Primary PIC control register
-%define PIC_2_CTRL 0xA0				; Secondary PIC control register
- 
-%define PIC_1_DATA 0x21				; Primary PIC data register
-%define PIC_2_DATA 0xA1				; Secondary PIC data register
- 
-%define IRQ_0	0x20				; IRQs 0-7 mapped to use interrupts 0x20-0x27
-%define IRQ_8	0x28				; IRQs 8-15 mapped to use interrupts 0x28-0x36
- 
-pic_setup:
- 
-; Send ICW 1 - Begin initialization -------------------------
- 
-	; Setup to initialize the primary PIC. Send ICW 1
- 
-	mov	al, ICW_1
-	out	PIC_1_CTRL, al
- 
-; Send ICW 2 - Map IRQ base interrupt numbers ---------------
- 
-	; Remember that we have 2 PICs. Because we are cascading with this second PIC, send ICW 1 to second PIC command register
- 
-	out	PIC_2_CTRL, al
- 
-	; send ICW 2 to primary PIC
- 
-	mov	al, IRQ_0
-	out	PIC_1_DATA, al
- 
-	; send ICW 2 to secondary controller
- 
-	mov	al, IRQ_8
-	out	PIC_2_DATA, al
- 
-; Send ICW 3 - Set the IR line to connect both PICs ---------
- 
-	; Send ICW 3 to primary PIC
- 
-	mov	al, 0x4			; 0x04 => 0100, second bit (IR line 2)
-	out	PIC_1_DATA, al		; write to data register of primary PIC
- 
-	; Send ICW 3 to secondary PIC
- 
-	mov	al, 0x2			; 010=> IR line 2
-	out	PIC_2_DATA, al		; write to data register of secondary PIC
- 
-; Send ICW 4 - Set x86 mode --------------------------------
- 
-	mov	al, 1			; bit 0 enables 80x86 mode
- 
-	; send ICW 4 to both primary and secondary PICs
- 
-	out	PIC_1_DATA, al
-	out	PIC_2_DATA, al
- 
-; All done. Null out the data registers
- 
-	mov	al, 0
-	out	PIC_1_DATA, al
-	out	PIC_2_DATA, al
-	
-	;mask
-in	al, 0x21		; read in the primary PIC Interrupt Mask Register (IMR)
-and	al, 0x00		; 0xEF => 11101111b. This sets the IRQ4 bit (Bit 5) in AL
-out	0x21, al		; write the value back into IMR
-
-
-in	al, 0xA1		; read in the primary PIC Interrupt Mask Register (IMR)
-and	al, 0x00		; 0xEF => 11101111b. This sets the IRQ4 bit (Bit 5) in AL
-out	0xA1, al		; write the value back into IMR
-
-ret
-
-;;;;;;;;;;;;;;;;;;;;