@guard _DATA_DSS_

@export BIOS_API bios_api.dss

## ============================= Memory Mapped Devices and Registers =============================
@group MemoryAddresses
	MBR 			0x1380
	INT_VEC 		0x1080
	DISK_INTERFACE 	0x1580
	RAM 			0x1740
	CMOS 			0x1000
	VGA 			0x1600
@end

@group CMOS_Settings
	BOOT_DISK 				{ MemoryAddresses.CMOS + 0x0010 }
@end



@export_comment /BIOS_API "These are the Hardware Interrupt codes of this machine."
@group /BIOS_API HW_Int
	DISK_INTERFACE_FINISHED				0x80
	KEY_PRESSED							0xA0
	KEY_RELEASED						0xA1
	TEXT_ENTERED						0xA2
@end
@export_comment /BIOS_API "\n"



@export_comment /BIOS_API "These are the memory-mapped registers used to interact with the video card's interface."
@group /BIOS_API VGA_Registers
	VIDEO_MODE 				{ MemoryAddresses.VGA + 0x0000 }
	SIGNAL					{ MemoryAddresses.VGA + 0x0003 }
	TEXT_SINGLE_CHAR		{ MemoryAddresses.VGA + 0x0004 }

	BUFF_START				{ MemoryAddresses.VGA + 0x00E0 }
@end
@export_comment /BIOS_API "\n"



@export_comment /BIOS_API "These are the different Video Modes that the video card supports."
@group /BIOS_API VGA_VideoModes
	TEXT_SINGLE_COLOR			0x00
@end
@export_comment /BIOS_API "\n"



@export_comment /BIOS_API "These are signals used to comunicate with the video card's interface, when in TEXT_SINGLE_COLOR mode."
@group /BIOS_API Sig_VGA_Text_Single_Color
	CONTINUE 			0x00
	PRINT_CHAR			0x02
	STORE_CHAR			0x03
	PRINT_FLUSH_BUFF	0x04
	FLUSH_BUFF			0x05
	PRINT_BUFF			0x06

	REFRESH_SCREEN 		0xE0
	CLEAR_SCREEN 		0xE1
@end
@export_comment /BIOS_API "\n"



@define S_REG_1 0x07
@define S_REG_2 0x08
@define S_REG_3 0x09

@define INST_BIOS_NODE_TOGGLE 0x02
## ===============================================================================================

.data
	$_bios_name "DragonBIOS"
	$_bios_version_number_maj 0x00, 0x00
	$_bios_version_number_min 0x00, 0x03