From a7132e3766deb4ee49f94513b702525b42af2c1f Mon Sep 17 00:00:00 2001
From: Uri Shaked
Date: Sun, 24 Oct 2021 15:33:09 +0300
Subject: fix(eeprom): EEPROM interrupt not firing #110

fix #110
---
 src/cpu/cpu.ts | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'src/cpu')

diff --git a/src/cpu/cpu.ts b/src/cpu/cpu.ts
index 2675d1d..fe3bf63 100644
--- a/src/cpu/cpu.ts
+++ b/src/cpu/cpu.ts
@@ -141,9 +141,10 @@ export class CPU {
   }
 
   updateInterruptEnable(interrupt: AVRInterruptConfig, registerValue: u8) {
-    const { enableMask, flagRegister, flagMask } = interrupt;
+    const { enableMask, flagRegister, flagMask, inverseFlag } = interrupt;
     if (registerValue & enableMask) {
-      if (this.data[flagRegister] & flagMask) {
+      const bitSet = this.data[flagRegister] & flagMask;
+      if (inverseFlag ? !bitSet : bitSet) {
         this.queueInterrupt(interrupt);
       }
     } else {
-- 
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