Fix audio and file indexing

1 files changed, 5 insertions, 4 deletions

diff --git a/src/main.c b/src/main.c
index 90778a4..96ced87 100644
--- a/src/main.c
+++ b/src/main.c
@@ -200,7 +200,7 @@ dei_datetime(u8 *dev, u8 port) {
 
 u16
 dei_audio(u8 *dev, u8 port) {
-    size_t idx = device_data + 0x30 - dev;
+    size_t idx = (dev - (device_data + 0x30)) / 16;
     AudioChannel *c = &channels[idx];
     switch(port) {
         case 0x0:
@@ -222,7 +222,8 @@ dei_audio(u8 *dev, u8 port) {
 
 void
 deo_audio(u8 *dev, u8 port) {
-    size_t idx = device_data + 0x30 - dev;
+    size_t idx = (dev - (device_data + 0x30)) / 16;
+    txt_printf("IDX: %d\n", idx);
     AudioChannel *c = &channels[idx];
     if (port == 0xf) {
         u16 length = 0;
@@ -241,7 +242,7 @@ deo_audio(u8 *dev, u8 port) {
 
 u16
 dei_file(u8 *dev, u8 port) {
-    size_t idx = device_data + 0xa0 - dev;
+    size_t idx = (dev - (device_data + 0xa0)) / 16;
     UxnFile *c = &uxn_file[idx];
     switch(port) {
         case 0x0:
@@ -262,7 +263,7 @@ dei_file(u8 *dev, u8 port) {
 
 void
 deo_file(u8 *dev, u8 port) {
-    size_t idx = device_data + 0xa0 - dev;
+    size_t idx = (dev - (device_data + 0xa0)) / 16;
     u16 a, b, res;
     UxnFile *f = &uxn_file[idx];
     switch(port) {