diff options
Diffstat (limited to 'sw/z80/kernel/pio.c')
| -rw-r--r-- | sw/z80/kernel/pio.c | 25 |
1 files changed, 7 insertions, 18 deletions
diff --git a/sw/z80/kernel/pio.c b/sw/z80/kernel/pio.c index e8c7e24..4b9caee 100644 --- a/sw/z80/kernel/pio.c +++ b/sw/z80/kernel/pio.c @@ -1,29 +1,18 @@ #include "pio.h" -static uint8_t *pio_port_a = (uint8_t *) ADDR_DEV_PIO; -static uint8_t *pio_port_b = (uint8_t *) ADDR_DEV_PIO + 1; -static uint8_t *pio_ctrl_a = (uint8_t *) ADDR_DEV_PIO + 2; -static uint8_t *pio_ctrl_b = (uint8_t *) ADDR_DEV_PIO + 3; +static uint8_t *pio_port = (uint8_t *) ADDR_DEV_PIO; +static uint8_t *pio_ctrl = (uint8_t *) (ADDR_DEV_PIO + 2); -void pio_data(int port, uint8_t data) +void _pio_data(int port, uint8_t data) { - if (port == PIO_A) - *pio_port_a = cmd; - else - *pio_port_b = cmd; + *(pio_port + port) = data; } -void pio_command(int port, uint8_t cmd) +void _pio_command(int port, uint8_t cmd) { - if (port == PIO_A) - *pio_ctrl_a = cmd; - else - *pio_ctrl_b = cmd; + *(pio_ctrl + port) = cmd; } - - -inline int pio_read_pin(int port, uint8_t pin) +void pio_set_mode(int port, int mode) { - } |