add instructions for removing rfu ewram check

1 files changed, 6 insertions, 0 deletions

diff --git a/Implementing-ipatix's-High-Quality-Audio-Mixer.md b/Implementing-ipatix's-High-Quality-Audio-Mixer.md
index 3bc0433..29e7a92 100644
--- a/Implementing-ipatix's-High-Quality-Audio-Mixer.md
+++ b/Implementing-ipatix's-High-Quality-Audio-Mixer.md
@@ -51,6 +51,12 @@ To move these to EWRAM, change these two lines to:
 EWRAM_DATA u32 gf_rfu_REQ_api[RFU_API_BUFF_SIZE_RAM / 4] = {};
 EWRAM_DATA struct GFRfuManager Rfu = {};
 ```
+
+Next, we need to go to [librfu_rfu](https://github.com/pret/pokeemerald/blob/master/src/librfu_rfu.c) to make a small code change to allow the Wireless Adapter to function with these structs in EWRAM. Scrolling down to [line 134](https://github.com/pret/pokeemerald/blob/master/src/librfu_rfu.c#L134) will reveal there is actually a check to see if the structs are in EWRAM, and if the check returns true, it will send an error and not allow the usage of the Wireless Adapter. I have confirmed that this works on console, so I am not sure what the purpose of this check is, but all we need to do is comment out or delete the two lines:
+```diff
+-if (((uintptr_t)APIBuffer & 0xF000000) == 0x2000000 && copyInterruptToRam)
+-    return ERR_RFU_API_BUFF_ADR;
+```
 Next, go to [sym_common.txt](https://github.com/pret/pokeemerald/blob/master/sym_common.txt) and delete the line that says `.include "link_rfu_2.o"` on line 37:
 ```diff
     .include "AgbRfu_LinkManager.o"