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-rw-r--r--devices/uart_16550.h41
1 files changed, 0 insertions, 41 deletions
diff --git a/devices/uart_16550.h b/devices/uart_16550.h
index 0e181b2..bb219cc 100644
--- a/devices/uart_16550.h
+++ b/devices/uart_16550.h
@@ -1,46 +1,5 @@
#pragma once
-enum uart_16550_offset {
- Data = 0, // read from receive buffer / write to transmit buffer | BaudDiv_l
- InterruptControl = 1, // interrupt enable | BaudDiv_h
- FifoControl = 2, // interrupt ID and FIFO control
- LineControl = 3, // most significant bit is the DLAB
- ModemControl = 4,
- LineStatus = 5,
- ModemStatus = 6,
- Scratch = 7,
-};
-// Line Control
-// | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
-// |dla| | parity | s | data |
-
-enum LineControl {
- d5bit = 0b00000000, // data bits
- d6bit = 0b00000001,
- d7bit = 0b00000010,
- d8bit = 0b00000011,
- // none = 0b00000000, // parity bits
- odd = 0b00001000,
- even = 0b00011000,
- mark = 0b00101000,
- space = 0b00111000,
- // s1bit = 0b00000000, // stop bits
- s2bit = 0b00000100, // 1.5 for 5bit data; 2 otherwise
- dlab = 0b10000000, // divisor latch access bit
-};
-
-// Line Status Register
-enum LineStatus {
- DR = 0b00000001, // data ready: see if there is data to read
- OE = 0b00000010, // overrun error: see if there has been data lost
- PE = 0b00000100, // parity error: see if there was error in transmission
- FE = 0b00001000, // framing error: see if a stop bit was missing
- BI = 0b00010000, // break indicator: see if there is a break in data input
- THRE = 0b00100000, // transmitter holding register empty: see if transmission buffer is empty
- TEMT = 0b01000000, // transmitter empty: see if transmitter is not doing anything
- ERRO = 0b10000000, // impending error: see if there is an error with a word in the input buffer
-};
-
enum UART {
COM1 = 0x3f8,
COM2 = 0x2f8,