Drive DRQ and IRQ harder to get shared lines or older boards to behav…

…e better
polpo · Jan 15, 2024 · 8fed642 · 8fed642
1 parent 9128a40
commit 8fed642
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Showing 3 changed files with 3 additions and 1 deletion.
diff --git a/sw/isa_dma.pio b/sw/isa_dma.pio
@@ -49,6 +49,7 @@ static inline void dma_write_program_init(PIO pio, uint sm, uint offset) {
     // Config DMA pins
     sm_config_set_set_pins(&c, DRQ_PIN, 1);
     pio_gpio_init(pio, DRQ_PIN);
+    gpio_set_drive_strength(DRQ_PIN, GPIO_DRIVE_STRENGTH_12MA);
     pio_sm_set_consecutive_pindirs(pio, sm, DRQ_PIN, 1, true);
     sm_config_set_jmp_pin(&c, TC_PIN);
     pio_sm_set_consecutive_pindirs(pio, sm, TC_PIN, 1, false);

diff --git a/sw/picogus.cpp b/sw/picogus.cpp
@@ -657,6 +657,7 @@ int main()
 
     gpio_init(IRQ_PIN);
     gpio_set_dir(IRQ_PIN, GPIO_OUT);
+    gpio_set_drive_strength(IRQ_PIN, GPIO_DRIVE_STRENGTH_12MA);
 
 #ifdef SOUND_MPU
     puts("Initing MIDI UART...");

diff --git a/sw/rp2040-psram b/sw/rp2040-psram