update to better work across multiple emulators

Author: finger563

components/box-emu/include/box-emu.hpp

@@ -126,6 +126,7 @@ class BoxEmu : public espp::BaseComponent {
   /////////////////////////////////////////////////////////////////////////////
 
   bool initialize_memory();
+  void deinitialize_memory();
   size_t copy_file_to_romdata(const std::string& filename);
   uint8_t *romdata() const;
 

components/box-emu/src/box-emu.cpp

@@ -182,7 +182,7 @@ sdmmc_card_t *BoxEmu::sdcard() const {
 // Memory
 /////////////////////////////////////////////////////////////////////////////
 
-static constexpr size_t memory_size = 6*1024*1024;
+static constexpr size_t memory_size = 4*1024*1024;
 
 extern "C" uint8_t *osd_getromdata() {
   auto &emu = BoxEmu::get();
@@ -206,6 +206,14 @@ bool BoxEmu::initialize_memory() {
   return true;
 }
 
+void BoxEmu::deinitialize_memory() {
+  if (romdata_) {
+    logger_.info("Deinitializing memory (romdata)");
+    free(romdata_);
+    romdata_ = nullptr;
+  }
+}
+
 size_t BoxEmu::copy_file_to_romdata(const std::string& filename) {
   // load the file data and iteratively copy it over
   std::ifstream romfile(filename, std::ios::binary | std::ios::ate); //open file at end