dreamcast/regs/gdrom_bits.csv

1	register_name	enum_name	bits	bit_name	value	mask	description
2	status		7	bsy
3	status		6	drdy
4	status		5	df
5	status		4	dsc
6	status		3	drq
7	status		2	corr
8	status		0	check
9
10	alternate_status		7	bsy
11	alternate_status		6	drdy
12	alternate_status		5	df
13	alternate_status		4	dsc
14	alternate_status		3	drq
15	alternate_status		2	corr
16	alternate_status		0	check
17
18	command	code	7-0	soft_reset	0x08
19	command	code	7-0	execute_device_diagnostic	0x90
20	command	code	7-0	nop	0x00
21	command	code	7-0	packet_command	0xa0
22	command	code	7-0	identify_device	0xa1
23	command	code	7-0	set_features	0xef
24
25	device_control		3,0	device_control	0b1000
26	device_control		2	srst	1
27	device_control		1	nien	1
28
29	drive_select		7-4	drive_select	0b1010
30	drive_select		3-0	lun		0xf
31
32	error		7-4	sense_key
33	error		3	mcr
34	error		2	abrt
35	error		1	eomf
36	error		0	ili
37
38	features	dma	0	disable	0
39	features	dma	0	enable	1
40
41	features_ata	set_clear	7	clear	0
42	features_ata	set_clear	7	set	1
43	features_ata	command	6-0	set_transfer_mode	3
44
45	interrupt_reason		1	io
46	interrupt_reason		0	cod
47
48	sector_count	transfer_mode	7-0	pio_default_transfer_mode	0b00000000
49	sector_count	transfer_mode	7-0	pio_flow_control_transfer_mode	0b00001000
50	sector_count	transfer_mode	7-0	single_word_dma_mode	0b00010000
51	sector_count	transfer_mode	7-0	multi_word_dma_mode	0b00100000
52
53	sector_number		7-4	disc_format
54	sector_number		3-0	status
55
56	error_ata	sense_key	3-0	no_sense	0x0
57	error_ata	sense_key	3-0	recovered_error	0x1
58	error_ata	sense_key	3-0	not_ready	0x2
59	error_ata	sense_key	3-0	medium_error	0x3
60	error_ata	sense_key	3-0	hardware_error	0x4
61	error_ata	sense_key	3-0	illegal_request	0x5
62	error_ata	sense_key	3-0	unit_attention	0x6
63	error_ata	sense_key	3-0	data_protect	0x7
64	error_ata	sense_key	3-0	aborted_command	0xb