ZX beeper: "register" view

src/engine/platform/zxbeeper.cpp

@@ -250,11 +250,12 @@ DivDispatchOscBuffer* DivPlatformZXBeeper::getOscBuffer(int ch) {
 }
 
 unsigned char* DivPlatformZXBeeper::getRegisterPool() {
-  return regPool;
+  ulaOut=sOffTimer?0x10:0x08;
+  return &ulaOut;
 }
 
 int DivPlatformZXBeeper::getRegisterPoolSize() {
-  return 112;
+  return 1;
 }
 
 void DivPlatformZXBeeper::reset() {
@@ -274,6 +275,7 @@ void DivPlatformZXBeeper::reset() {
   curChan=0;
   sOffTimer=0;
   sampleBank=0;
+  ulaOut=0;
 }
 
 bool DivPlatformZXBeeper::keyOffAffectsArp(int ch) {

src/engine/platform/zxbeeper.h

@@ -73,7 +73,7 @@ class DivPlatformZXBeeper: public DivDispatch {
       QueuedWrite(unsigned char a, unsigned char v): addr(a), val(v) {}
   };
   std::queue<QueuedWrite> writes;
-  unsigned char lastPan;
+  unsigned char lastPan, ulaOut;
 
   int cycles, curChan, sOffTimer, delay;
   int tempL[32];