winnt4 (mps) rtc update

Pixelsuft · Sep 12, 2022 · 3f7360b · 3f7360b
1 parent 309e573
commit 3f7360b
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Showing 5 changed files with 19 additions and 11 deletions.
diff --git a/build/libv86.js b/build/libv86.js
diff --git a/build/libv86.js.map b/build/libv86.js.map
diff --git a/build/v86_all.js b/build/v86_all.js
diff --git a/build/v86_all.js.map b/build/v86_all.js.map
diff --git a/src/rtc.js b/src/rtc.js
@@ -247,6 +247,13 @@ RTC.prototype.cmos_port_read = function()
             return this.encode_time(new Date(this.rtc_time).getUTCFullYear() % 100);
 
         case CMOS_STATUS_A:
+            if(v86.microtick() % 1000 >= 999)
+            {
+                // Set update-in-progress for one millisecond every second (we
+                // may not have precision higher than that in browser
+                // environments)
+                return this.cmos_a | 0x80;
+            }
             return this.cmos_a;
         case CMOS_STATUS_B:
             //dbg_log("cmos read from index " + h(index));