tweak memory warning

system6/emulator.c

@@ -411,8 +411,8 @@ int LoadRom(Str63 fileName, short vRefNum)
     return false;
   }
 
-  // 2 MB base + 256 KB per 32 KB of ROM
-  if (MaxBlock() < MEMORY_WARNING_THRESHOLD + rom.length * 8) {
+  // 1.5 MB base + 128 KB per 16 KB bank of ROM
+  if (MaxBlock() < BASE_MEMORY_REQUIRED + rom.length * 8) {
     ShowCenteredAlert(
         ALRT_4_LINE,
         "\pI don't have much memory left after", 

system6/emulator.h

@@ -67,7 +67,7 @@ extern PixMap offscreen_pixmap;
 
 #define SOFT_RESET_TICKS 30  /* ~0.5 sec at 60Hz */
 
-#define MEMORY_WARNING_THRESHOLD (2 * 1024 * 1024)
+#define BASE_MEMORY_REQUIRED (3 * 1024 * 512) 
 
 int LoadRom(Str63, short);
 void SetScreenScale(int scale);

system6/resources.r

@@ -285,7 +285,7 @@ data 'SICN' (128) {
 };
 
 data 'SIZE' (-1) {
-	$"0080 0030 0000 0020 0000"                           /* .Ä. ...... */
+	$"0080 0080 0000 0020 0000"                           /* .Ä. ...... */
 };
 
 data 'ics#' (128) {