Preliminary fixes for memory accesses between $200000 and $7FFFFF, proper

[virtualjaguar] / src / blitter.cpp

diff --git a/src/blitter.cpp b/src/blitter.cpp
index 4e8ea746388e7bc095609a2d0b75a170fbd0cc52..13960996e6e9acf7afe55f786ac1a2ef6bfede3a 100644 (file)
--- a/src/blitter.cpp
+++ b/src/blitter.cpp
@@ -1559,10 +1559,17 @@ uint8 BlitterReadByte(uint32 offset, uint32 who/*=UNKNOWN*/)
        // status register
 //This isn't cycle accurate--how to fix? !!! FIX !!!
 //Probably have to do some multi-threaded implementation or at least a reentrant safe implementation...
+//Real hardware returns $00000805, just like the JTRM says.
+       if (offset == (0x38 + 0))
+               return 0x00;
+       if (offset == (0x38 + 1))
+               return 0x00;
+       if (offset == (0x38 + 2))
+               return 0x08;
        if (offset == (0x38 + 3))
-               return 0x01;    // always idle
+               return 0x05;    // always idle/never stopped (collision detection ignored!)
 
-// CHECK HERE ONCE THIS FIX HAS BEEN TESTED: [ ]
+// CHECK HERE ONCE THIS FIX HAS BEEN TESTED: [X]
 //Fix for AvP:
        if (offset >= 0x04 && offset <= 0x07)
 //This is it. I wonder if it just ignores the lower three bits?