.load 0x0000           															## BIOS is mapped to address 0x0000 in memory

@include <data.dss>

## ============================= BIOS Program =============================
.code
	movb [VGA_Registers.VIDEO_MODE], VGA_VideoModes.TEXT_SINGLE_COLOR			## Enable Text_Single_Color graphics mode
	mov FL, 0b0000000000000001													## Zero the FL Register and enable interrupts
	movb [{MemoryAddresses.INT_VEC + (0x20 * 3)}], 0xFF 						## Setting up int 0x20 handler
	mov [{MemoryAddresses.INT_VEC + (0x20 * 3) + 1}], $_int_20_handler			## --
	
	mov R10, 0x00																## Setting up int 0x30 handler by using int 0x20 functionality
	mov R9, $_int_30_handler													##  -Passing the handler's address
	mov R8, 0x30																##  -Passing the interrupt's code to setup
	int 0x20																	##  -Calling int 0x20 with 0x00 as parameter, to set new handler up

	push 0
	call $_print_machine_info

	## MBR Loading 
	and FL, 0b1111111111111110													## Disable interrupts
	mov FL, ACC
	push 0
	call $_load_mbr_data_block
	or FL, 0b0000000000000001													## Enable interrupts
	mov FL, ACC
	## ----

	%low INST_BIOS_NODE_TOGGLE 0x00												## Disable BIOS Mode before leaving the BIOS
	jmp MemoryAddresses.MBR         											## Jump to start of MBR in memory
	hlt                															## Just in case somehow execution reaches this point
## ========================================================================

@include <drivers.dss>
@include <utils.dss>

_print_machine_info:
	

	mov R9, $_bios_logo_2_line_1
	mov R10, 0x0A
	int 0x30

	mov R10, 0x08										## Print and flush buffer
	int 0x30

	mov R10, 0x02
	int 0x30



	mov R9, $_bios_logo_2_line_2
	mov R10, 0x0A
	int 0x30

	mov R10, 0x08										## Print and flush buffer
	int 0x30
	
	

	mov R10, 0x0A
	mov R9, $_bios_name
	int 0x30											## Print BIOS Name

	mov R10, 0x05
	mov R9, [$_bios_version_number_maj]
	int 0x30											## Print BIOS Version (Major)

	mov R10, 0x06
	mov R9, 46
	int 0x30											## Print '.' character

	mov R10, 0x05
	mov R9, [$_bios_version_number_min]
	int 0x30											## Print BIOS Version (Minor)

	mov R10, 0x02
	int 0x30											## Print New Line




	

	mov R9, $_bios_logo_2_line_3
	mov R10, 0x0A
	int 0x30

	mov R10, 0x08										## Print and flush buffer
	int 0x30

	

	mov R10, 0x0A
	mov R9, $_clock_str
	int 0x30											## Print Clock label

	mov R10, 0x05
	mov R9, [CMOS_Settings.CLOCK_SPEED]
	int 0x30											## Print Clock speed

	mov R10, 0x0A
	mov R9, $_hz_str
	int 0x30											## Print hz label

	mov R10, 0x02
	int 0x30											## Print New Line




	

	mov R9, $_bios_logo_2_line_4
	mov R10, 0x0A
	int 0x30

	mov R10, 0x08										## Print and flush buffer
	int 0x30

	
	
	mov R10, 0x0A
	mov R9, $_mem_str
	int 0x30											## Print Memory label

	mov R10, 0x05
	mov R9, [CMOS_Settings.MEM_START]
	int 0x30											## Print Memory start

	mov R10, 0x06
	mov R9, 47
	int 0x30											## Print '/' character

	mov R10, 0x05
	mov R9, [CMOS_Settings.MEM_SIZE]
	int 0x30											## Print Memory size

	mov R10, 0x0A
	mov R9, $_byte_str
	int 0x30											## Print bytes label

	mov R10, 0x02
	int 0x30											## Print New Line




	
	mov R9, $_bios_logo_2_line_5
	mov R7, 4
	mov ACC, 19
_print_machine_info_logo_loop:
	inc R7
	mov R10, 0x0A
	int 0x30
	addip R9, 54										## 90 is the length of a line
	mov R10, 0x08
	int 0x30
	mov R10, 0x02
	int 0x30
	jls $_print_machine_info_logo_loop, R7
	

	ret

.fixed 4096, 0x00      ## BIOS Needs to be 4096 Bytes exactly