BOOT0SEG equ 0x07C0
BOOT0OFF equ 0x0000

BOOT1SEG equ 0x0100
BOOT1OFF equ 0x0000

KERNSEG equ 0x1000
KERNOFF equ 0x0000

VIDEOSEG equ 0xB800

; 8259A PIC initialization codes.
; Source: Linux bootsect.S, and Intel 8259A datasheet

; The most important reason why we reprogram the PICs is to
; route the hardware interrupts through vectors *above*
; those reserved by Intel.  The BIOS (for historical reasons :-)
; routes them such that they conflict with internal processor-generated
; interrupts.

ICW1 equ 0x11		; ICW1 - ICW4 needed, cascade mode, interval=8,
			;   edge triggered. (I think interval is irrelevant
			;   for x86.)
ICW2_MASTER equ 0x20	; put IRQs 0-7 at 0x20 (above Intel reserved ints)
ICW2_SLAVE equ 0x28	; put IRQs 8-15 at 0x28
ICW3_MASTER equ 0x04	; IR2 connected to slave
ICW3_SLAVE equ 0x02	; slave has id 2
ICW4 equ 0x01		; 8086 mode, no auto-EOI, non-buffered mode,
			;   not special fully nested mode

KERN_THREAD_OBJ equ (1024*1024)
KERN_STACK equ KERN_THREAD_OBJ + 4096