Changes

| s

| s

| rw

| rw

| ?

| RTC interrupt mask

|-

|-

| 0x1A

| 0x1A

|-

|-

| 0x30

| 0x30

- 0x37

- 0x36

| s

| s

| rw

| rw

| RTC time (system clock). 7 bytes are read from this. The upper nibble of each byte encodes 10s (BCD), so each byte is post-processed with (byte & 0xF) + (10 * (byte >> 4)). Byte 0 encodes seconds, byte 1 minutes, byte 2 hours, byte *4* days, byte 5 months and byte 6 years (byte 3 is unused?)

| RTC time (system clock). 7 bytes are read from this. The upper nibble of each byte encodes 10s (BCD), so each byte is post-processed with (byte & 0xF) + (10 * (byte >> 4)). Byte 0 encodes seconds, byte 1 minutes, byte 2 hours, byte 3 is either the current day of the week or current week of month (not used by anything though), byte 4 days, byte 5 months and byte 6 years

|-

|-

| 0x38

| 0x37

| s

| s

| rw

| rw

| ?

| ?

|-

|-

| 0x39

| 0x38

- 0x3C

|-

| 0x3C

| s

| s

| rw

| rw

| ?

| RTC alarm registers

|-

|-

| 0x3D

| 0x3D