diff options
Diffstat (limited to 'sw/z80/drivers/include')
| -rw-r--r-- | sw/z80/drivers/include/ctc.h | 6 | ||||
| -rw-r--r-- | sw/z80/drivers/include/pio.h | 52 | ||||
| -rw-r--r-- | sw/z80/drivers/include/usart.h | 158 |
3 files changed, 0 insertions, 216 deletions
diff --git a/sw/z80/drivers/include/ctc.h b/sw/z80/drivers/include/ctc.h deleted file mode 100644 index 80e8b4b..0000000 --- a/sw/z80/drivers/include/ctc.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef __CTC_H__ -#define __CTC_H__ - -void ctc_control(); - -#endif /* __CTC_H__ */ diff --git a/sw/z80/drivers/include/pio.h b/sw/z80/drivers/include/pio.h deleted file mode 100644 index ee968d7..0000000 --- a/sw/z80/drivers/include/pio.h +++ /dev/null @@ -1,52 +0,0 @@ -#ifndef __PIO_H__ -#define __PIO_H__ - -#include "addresses.h" -#include <stdint.h> - -// DEBUG -#define PIO_ASM_INTERFACE - -// ports -#define PIO_A 0 -#define PIO_B 1 - -// registers -#define PIO_REG_DATA 0 -#define PIO_REG_CTRL 2 - -#define PIO_REG_DATA_A 0 // (PIO_A | PIO_REG_PORT) -#define PIO_REG_DATA_B 1 // (PIO_B | PIO_REG_PORT) -#define PIO_REG_CTRL_A 2 // (PIO_A | PIO_REG_CTRL) -#define PIO_REG_CTRL_B 3 // (PIO_B | PIO_REG_CTRL) - -#define PIO_MODE_BYTE_OUT 0 // mode 0 -#define PIO_MODE_BYTE_IN 1 // mode 1 -#define PIO_MODE_BYTE_BI 2 // mode 2 -#define PIO_MODE_BIT_IO 3 // mode 3 - -#define PIO_INT_DISABLE 0 -#define PIO_INT_ACTIVE_HIGH 2 -#define PIO_INT_AND_MODE 4 -#define PIO_INT_ENABLE 8 - -/* functions used internally to interface with the device */ -inline void _pio_write(uint8_t reg, uint8_t data); -inline uint8_t _pio_read(uint8_t reg); - -/* the last argument is needed only for IO mode */ -void pio_set_mode(int port, int mode, uint8_t io); - -void pio_set_interrupts(int port, int control); -void pio_set_interrupts_mask(int port, int control, uint8_t mask); - -// uint8_t pio_read_data(int port); -uint8_t pio_read(int port); -void pio_write(int port, uint8_t data); - -inline int pio_read_pin(int port, uint8_t pin); -inline void pio_write_pin(int port, uint8_t pin); - -// TODO: implement mode (in/out/both) and interrupt vector - -#endif /* __PIO_H__ */ diff --git a/sw/z80/drivers/include/usart.h b/sw/z80/drivers/include/usart.h deleted file mode 100644 index 05aeb4a..0000000 --- a/sw/z80/drivers/include/usart.h +++ /dev/null @@ -1,158 +0,0 @@ -#ifndef __USART_H__ -#define __USART_H__ - -#include "addresses.h" - -#include <stdint.h> -#include <string.h> - -// baudrate clock divisors -// values from TL16C550C datasheet (table 9 for 1.8432 MHz crystal) -#define USART_BAUDRATE_50 2304 -#define USART_BAUDRATE_75 1536 -#define USART_BAUDRATE_110 1047 -#define USART_BAUDRATE_134_5 857 -#define USART_BAUDRATE_150 768 -#define USART_BAUDRATE_300 384 -#define USART_BAUDRATE_600 192 -#define USART_BAUDRATE_1200 96 -#define USART_BAUDRATE_1800 64 -#define USART_BAUDRATE_2000 58 -#define USART_BAUDRATE_2400 48 -#define USART_BAUDRATE_3600 32 -#define USART_BAUDRATE_4800 24 -#define USART_BAUDRATE_7200 16 -#define USART_BAUDRATE_9600 12 -#define USART_BAUDRATE_19200 6 -#define USART_BAUDRATE_38400 3 -#define USART_BAUDRATE_56000 3 - -// parity -#define USART_PARITY_NONE 0 -#define USART_PARITY_EVEN 1 -#define USART_PARITY_ODD 2 - -// stop bits -#define USART_STOP_BITS_1 10 -#define USART_STOP_BITS_15 15 -#define USART_STOP_BITS_2 20 - -// word lenght -#define USART_WORD_LENGTH_5 0 -#define USART_WORD_LENGTH_6 1 -#define USART_WORD_LENGTH_7 2 -#define USART_WORD_LENGTH_8 3 - -// autoflow -#define USART_AUTOFLOW_ALL 3 -#define USART_AUTOFLOW_CTS 2 -#define USART_AUTOFLOW_OFF 0 - -typedef unsigned int uint; -typedef volatile uint8_t register_t; - -/* stuctures for usart registers */ -struct IER -{ - volatile uint received_data_interrupt :1; - volatile uint transmitter_empty_interrupt :1; - volatile uint receiver_line_status_interrupt :1; - volatile uint modem_status_interrupt :1; - volatile uint reserved :4; -}; - -struct IIR -{ - volatile uint interrupt_pending :1; - volatile uint interrupt_id :3; - volatile uint reserved :2; - volatile uint fifos :2; -}; - -struct FCR -{ - volatile uint fifo_enable :1; - volatile uint receiver_fifo_rst :1; - volatile uint trasmitter_fifo_rst :1; - volatile uint dma_mode_select :1; - volatile uint reserved :1; - volatile uint receiver_trigger :2; -}; - -struct LCR -{ - volatile uint word_length :2; - volatile uint stop_bits :1; - volatile uint parity :1; - volatile uint even_parity :1; - volatile uint stick_parity :1; - volatile uint break_control :1; - volatile uint divisor_latch_access :1; -}; - -struct MCR -{ - volatile uint data_terminal_ready :1; - volatile uint request_to_send :1; - volatile uint out1; - volatile uint out2; - volatile uint loop; - volatile uint autoflow :1; - volatile uint reserved :2; -}; - -struct LSR -{ - volatile uint data_ready :1; - volatile uint overrun_error :1; - volatile uint parity_error :1; - volatile uint framing_error :1; - volatile uint break_interrupt :1; - volatile uint transmitter_holder_empty :1; - volatile uint transmitter_empty :1; - volatile uint fifo_recv_error :1; -}; - -struct MSR -{ - volatile uint delta_cts :1; - volatile uint delta_data_set_ready :1; - volatile uint trailing_edge_ring_indicator :1; - volatile uint delta_data_carrier_detect :1; - volatile uint clear_to_send :1; - volatile uint data_set_ready :1; - volatile uint ring_indicator :1; - volatile uint data_carrier_detect :1; -}; - -/* this structure is only for internal use */ -struct _usart_device -{ - register_t buffer; // also used as LSB for divisor latch - struct IER IER; - struct IIR IIR; - struct FCR FCR; - struct LCR LCR; - struct MCR MCR; - struct LSR LSR; - struct MSR MSR; - register_t scratch; -}; - - -// setup functions (wrappers) -void usart_set_baudrate(uint16_t baudrate); -void usart_set_parity(int mode); -void usart_set_stop_bits(int count); -void usart_set_word_length(int length); -void usart_set_autoflow(int mode); - -inline void usart_init(uint16_t baudrate, int parity, int stop_bits); - -void usart_transmit(uint8_t data); -uint8_t usart_receive(); - -int usart_write(uint8_t *data, size_t size); -int usart_read(uint8_t *buffer, size_t count); - -#endif // __USART__H__ |