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add delya/irq switch for shared mem

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This commit is contained in:
David Voswinkel
2009-08-06 20:44:44 +02:00
parent 6ef9989320
commit b6d5d1b571
5 changed files with 1825 additions and 1767 deletions
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34
avr/usbload/shared_memory.c
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@@ -81,15 +81,20 @@ void shared_memory_write(uint8_t cmd, uint8_t value)
sram_write(SHARED_MEM_TX_LOC_PAYLOAD, value);
snes_hirom();
snes_wr_disable();
snes_bus_active();
_delay_ms(50);
#if SHARED_MEM_SWITCH_IRQ
snes_irq_on();
snes_irq_lo();
_delay_us(20);
snes_irq_hi();
snes_irq_off();
#else
_delay_ms(SHARED_MEM_SWITCH_DELAY);
#endif
avr_bus_active();
//snes_irq_lo();
//snes_irq_off();
snes_lorom();
snes_wr_disable();
shared_memory_scratchpad_tx_restore();
shared_memory_irq_restore();
@@ -102,9 +107,7 @@ void shared_memory_yield()
snes_hirom();
snes_wr_disable();
snes_bus_active();
_delay_ms(10);
_delay_ms(SHARED_MEM_SWITCH_DELAY);
avr_bus_active();
snes_lorom();
snes_wr_disable();
@@ -131,14 +134,19 @@ int shared_memory_read(uint8_t *cmd, uint8_t *len,uint8_t *buffer)
sram_write(SHARED_MEM_RX_LOC_STATE, SHARED_MEM_RX_AVR_RTS);
snes_hirom();
snes_wr_disable();
snes_bus_active();
_delay_ms(50);
#if SHARED_MEM_SWITCH_IRQ
snes_irq_on();
snes_irq_lo();
_delay_us(20);
snes_irq_hi();
snes_irq_off();
#else
_delay_ms(SHARED_MEM_SWITCH_DELAY);
#endif
avr_bus_active();
//snes_irq_lo();
//snes_irq_off();
snes_lorom();
snes_wr_disable();
return 0;
}