Add patch from Dag Lem, from bug #1219.

https://sourceforge.net/p/vice-emu/bugs/1219/?page=1#5c25

I added some parentheses because the compiler warned me about that.


git-svn-id: https://svn.code.sf.net/p/vice-emu/code/trunk@45952 379a1393-f5fb-40a0-bcee-ef074d9b53f7

Author: Rhialto

vice/src/core/ciacore.c

@@ -689,6 +689,11 @@ void ciacore_reset(cia_context_t *cia_context)
  */
 static inline void strange_extra_sdr_flags(cia_context_t *cia_context, CLOCK rclk, uint8_t byte)
 {
+    if ((cia_context->sr_bits > 1 && cia_context->sr_bits < 15) ||
+        (cia_context->sr_bits == 15 && !(cia_context->sdr_delay & (/*CIA_SDR_CNT1 | */CIA_SDR_CNT2)))) {
+        schedule_sdr_alarm(cia_context, rclk, CIA_SDR_SET_SDR_IRQ2);
+    }
+
     if ((byte & CIA_CRA_SPMODE_OUT) == CIA_CRA_SPMODE_IN) {
         /* Switching from output to input */
         bool forceFinish = false;