1 files changed, 0 insertions, 84 deletions
diff --git a/sw/z80/drivers/pio.c b/sw/z80/drivers/pio.c
deleted file mode 100644
index f396e43..0000000
--- a/sw/z80/drivers/pio.c
+++ /dev/null
@@ -1,84 +0,0 @@
-#include "pio.h"
-
-#ifdef PIO_ASM_INTERFACE
-// TODO: set inline
-void _pio_write(uint8_t reg, uint8_t data)
-{
-    __asm
-    ;;  pop function arguments data in h, reg in a (l)
-    pop hl
-    ld a, l
-    ;; add ADDR_DEV_PIO to get the device address
-    add a, #ADDR_DEV_PIO
-    ld c, a
-    ;; load data
-    out (c), h
-    __endasm;
-}
-
-inline uint8_t _pio_read(uint8_t reg)
-{
-    // TODO: check "dec sp"
-    __asm
-    ;; pop function argument
-    dec sp
-    pop hl
-    ld a, l
-    ;; add ADDR_DEV_PIO to get the device address
-    add a, #ADDR_DEV_PIO
-    ld c, a
-    ;; read data
-    in l, (c)
-    ret
-    __endasm;
-}
-
-#else
-
-inline void _pio_write(uint8_t reg, uint8_t data)
-{
-    *((uint8_t *) (ADDR_DEV_PIO + reg)) = data;
-}
-
-inline uint8_t _pio_read(uint8_t reg)
-{
-    return *((uint8_t *) (ADDR_DEV_PIO + reg));
-}
-
-#endif
-
-void pio_set_mode(int port, int mode, uint8_t io)
-{
-    // 0x0F is a control sequence to set mode
-    _pio_write((PIO_REG_CTRL + port), ((mode << 6) | 0x0F));
-
-    // this mode requires an additional argument that sets
-    // a mode for each pin
-    if (mode == PIO_MODE_BIT_IO) {
-        _pio_write((PIO_REG_CTRL + port), io);
-    }
-}
-
-void pio_set_interrupts(int port, int control)
-{
-    // 0x07 is a control sequence to set interrupts
-    _pio_write((PIO_REG_CTRL + port), (control<<4 | 0x07));
-}
-
-void pio_set_interrupts_mask(int port, int control, uint8_t mask)
-{
-    // 0x17 is a control sequence to set interrupts
-    // AND interpret the next byte as a bitmask
-    _pio_write((PIO_REG_CTRL + port),(control | 0x97));
-    _pio_write((PIO_REG_CTRL + port), mask);
-}
-
-uint8_t pio_read(int port)
-{
-    return _pio_read((PIO_REG_DATA + port));
-}
-
-void pio_write(int port, uint8_t data)
-{
-    _pio_write((PIO_REG_DATA + port), data);
-}