A26x0 chip ram mirror.

diff --git a/cpuboard.cpp b/cpuboard.cpp
index 9eaa90df59cb0381949c369f0417b8b104a3925f..2a67f7769e2283641041f0313f2aed98b5a1172a 100644 (file)
--- a/cpuboard.cpp
+++ b/cpuboard.cpp
@@ -1292,6 +1292,18 @@ void cpuboard_map(void)
                map_banks(&blizzardf0_bank, 0xf00000 >> 16, 131072 >> 16, 0);
                map_banks(&blizzardea_bank, 0xf40000 >> 16, 65536 >> 16, 0);
        }
+       if (is_a2630()) {
+               if (!currprefs.address_space_24) {
+                       // end of 0x01000000 memory is detected by checking if address alias to chip ram!
+                       for (int i = 0x01000000; i < 0x10000000; i++) {
+                               addrbank *ab = &get_mem_bank(i);
+                               if (ab == &dummy_bank) {
+                                       map_banks(&chipmem_bank, i >> 16, currprefs.chipmem_size >> 16, 0);
+                                       break;
+                               }
+                       }
+               }
+       }
 }
 
 void cpuboard_reset(void)
@@ -1419,7 +1431,6 @@ void cpuboard_init(void)
                blizzardram_nojit_bank.mask = blizzardram_bank.mask;
                blizzardram_nojit_bank.startmask = blizzardram_bank.startmask;
 
-
                blizzard_jit = cpuboard_jitdirectompatible(&currprefs);
                if (blizzard_jit) {
                        if (cpuboard_size) {