From 039f2b9965ac716f7cb24c3563f6a9bf9e3038da Mon Sep 17 00:00:00 2001
From: Maxwell Beck <max@rastertail.net>
Date: Sun, 20 Jul 2025 11:13:53 -0500
Subject: feat: Move drive handing to `SIO_IRQ_PROC1`

---
 src/pico1541.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

(limited to 'src/pico1541.c')

diff --git a/src/pico1541.c b/src/pico1541.c
index 8a02587..9864c89 100644
--- a/src/pico1541.c
+++ b/src/pico1541.c
@@ -1,8 +1,10 @@
+#include <hardware/regs/intctrl.h>
 #include <stdint.h>
 
 #include <hardware/clocks.h>
 #include <hardware/flash.h>
 #include <hardware/gpio.h>
+#include <hardware/irq.h>
 #include <hardware/timer.h>
 #include <pico/multicore.h>
 
@@ -272,15 +274,18 @@ DRESULT disk_ioctl(BYTE pdrv, BYTE cmd, void *buff) {
 	return RES_PARERR;
 }
 
+void drive_irq() {
+	drive_cycle(&drive);
+}
+
 void drive_thread() {
 	drive_init(&drive);
 	drive.image = disk;
+
+	irq_set_exclusive_handler(SIO_IRQ_PROC1, drive_irq);
+	irq_set_enabled(SIO_IRQ_PROC1, true);
 	
 	multicore_fifo_push_blocking(1);
-
-	while (multicore_fifo_pop_blocking_inline()) {
-		drive_cycle(&drive);
-	}
 }
 
 int main() {
-- 
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