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-rw-r--r--sw/z80/kernel/drivers/ctc.c1
-rw-r--r--sw/z80/kernel/drivers/pio.c29
2 files changed, 26 insertions, 4 deletions
diff --git a/sw/z80/kernel/drivers/ctc.c b/sw/z80/kernel/drivers/ctc.c
new file mode 100644
index 0000000..e23ed8e
--- /dev/null
+++ b/sw/z80/kernel/drivers/ctc.c
@@ -0,0 +1 @@
+#include "drivers/ctc.h" \ No newline at end of file
diff --git a/sw/z80/kernel/drivers/pio.c b/sw/z80/kernel/drivers/pio.c
index 289ebe0..4321fb8 100644
--- a/sw/z80/kernel/drivers/pio.c
+++ b/sw/z80/kernel/drivers/pio.c
@@ -3,17 +3,38 @@
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)
+inline void _pio_data(int port, uint8_t data)
{
*(pio_port + port) = data;
}
-void _pio_command(int port, uint8_t cmd)
+inline void _pio_control(int port, uint8_t cmd)
{
*(pio_ctrl + port) = cmd;
}
-/* void pio_set_mode(int port, int mode)
+void pio_set_mode(int port, int mode, uint8_t io)
{
+ // 0x0F is a control sequence to set mode
+ _pio_control(port, ((mode << 6) | 0x0F));
-} */
+ // this mode requires an additional argument that sets
+ // a mode for each pin
+ if (mode == PIO_MODE_BIT_IO) {
+ _pio_control(port, io);
+ }
+}
+
+void pio_set_interrupts(int port, int control)
+{
+ // 0x07 is a control sequence to set interrupts
+ _pio_control(port, (control | 0x07));
+}
+
+void pio_set_interrupts_mask(int port, int control, uint8_t mask)
+{
+ // 0x17 is a control sequence to set interrupts
+ // and to interpret the next byte as a mask
+ _pio_control(port, (control | 0x17));
+ _pio_control(port, mask);
+}