|
@@ -52,6 +52,7 @@ void shared_memory_scratchpad_tx_restore()
|
|
|
sram_write(SHARED_MEM_TX_LOC_PAYLOAD, scratchpad_payload);
|
|
|
}
|
|
|
|
|
|
+
|
|
|
void shared_memory_irq_hook()
|
|
|
{
|
|
|
irq_addr_lo = sram_read(SHARED_IRQ_LOC_LO);
|
|
@@ -84,10 +85,9 @@ void shared_memory_write(uint8_t cmd, uint8_t value)
|
|
|
snes_bus_active();
|
|
|
_delay_ms(50);
|
|
|
|
|
|
-
|
|
|
avr_bus_active();
|
|
|
- snes_irq_lo();
|
|
|
- snes_irq_off();
|
|
|
+ //snes_irq_lo();
|
|
|
+ //snes_irq_off();
|
|
|
snes_lorom();
|
|
|
snes_wr_disable();
|
|
|
|
|
@@ -95,3 +95,50 @@ void shared_memory_write(uint8_t cmd, uint8_t value)
|
|
|
shared_memory_irq_restore();
|
|
|
|
|
|
}
|
|
|
+
|
|
|
+void shared_memory_yield()
|
|
|
+{
|
|
|
+
|
|
|
+ snes_hirom();
|
|
|
+ snes_wr_disable();
|
|
|
+ snes_bus_active();
|
|
|
+
|
|
|
+ _delay_ms(10);
|
|
|
+
|
|
|
+ avr_bus_active();
|
|
|
+ snes_lorom();
|
|
|
+ snes_wr_disable();
|
|
|
+
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+int shared_memory_read(uint8_t *cmd, uint8_t *len,uint8_t *buffer)
|
|
|
+{
|
|
|
+ uint8_t state;
|
|
|
+
|
|
|
+
|
|
|
+ state = sram_read(SHARED_MEM_RX_LOC_STATE);
|
|
|
+ if (state != SHARED_MEM_RX_AVR_ACK){
|
|
|
+ return 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ *cmd = sram_read(SHARED_MEM_RX_LOC_CMD);
|
|
|
+ *len = sram_read(SHARED_MEM_RX_LOC_LEN);
|
|
|
+ info("Read shared memory 0x%04x=0x%02x 0x%04x=0x%02x \n",
|
|
|
+ SHARED_MEM_RX_LOC_CMD, *cmd, SHARED_MEM_RX_LOC_LEN, *len);
|
|
|
+
|
|
|
+ sram_bulk_read_buffer(SHARED_MEM_RX_LOC_PAYLOAD,buffer, *len);
|
|
|
+ sram_write(SHARED_MEM_RX_LOC_STATE, SHARED_MEM_RX_AVR_RTS);
|
|
|
+
|
|
|
+ snes_hirom();
|
|
|
+ snes_wr_disable();
|
|
|
+ snes_bus_active();
|
|
|
+ _delay_ms(50);
|
|
|
+
|
|
|
+ avr_bus_active();
|
|
|
+ //snes_irq_lo();
|
|
|
+ //snes_irq_off();
|
|
|
+ snes_lorom();
|
|
|
+ snes_wr_disable();
|
|
|
+ return 0;
|
|
|
+}
|