New sub dir: avr.

1 files changed, 27 insertions, 0 deletions

diff --git a/avr/z80-if.h b/avr/z80-if.h
new file mode 100644
index 0000000..1068225
--- /dev/null
+++ b/avr/z80-if.h
@@ -0,0 +1,27 @@
+
+typedef enum {LOW, HIGH} level_t;
+
+void z80_setup_bus(void);
+void z80_write(uint32_t addr, uint8_t data);
+uint8_t z80_read(uint32_t addr);
+void z80_request_bus(void);
+void z80_release_bus(void);
+void z80_memset(uint32_t addr, uint8_t data, uint32_t length);
+void z80_reset(level_t level);
+void z80_reset_pulse(void);
+void z80_busreq(level_t level);
+void z80_write_block(uint8_t *src, uint32_t dest, uint32_t length);
+int z80_stat_halt(void);
+
+
+typedef enum fifo_t {fifo_in, fifo_out, NUM_FIFOS} fifo_t;
+
+void z80_memfifo_init(const fifo_t f, uint32_t adr);
+int z80_memfifo_is_empty(const fifo_t f);
+int z80_memfifo_is_full(const fifo_t f);
+uint8_t z80_memfifo_getc(const fifo_t f);
+void z80_memfifo_putc(fifo_t f, uint8_t val);
+
+void z80_setup_msg_fifo(void);
+void z80_init_msg_fifo(uint32_t addr);
+int z80_msg_fifo_getc(void);