Allocating genesis

TASEmulators · Apr 8, 2024 · 7703290 · 7703290
1 parent 5b55633
commit 7703290
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Showing 3 changed files with 15 additions and 9 deletions.
diff --git a/core/genesis.c b/core/genesis.c
@@ -42,9 +42,9 @@
 #include "shared.h"
 
 external_t ext;
-uint8 boot_rom[0x800];    /* Genesis BOOT ROM   */
-uint8 work_ram[0x10000];  /* 68K RAM  */
-uint8 zram[0x2000];       /* Z80 RAM  */
+uint8* boot_rom;    /* Genesis BOOT ROM   */
+uint8* work_ram;  /* 68K RAM  */
+uint8* zram;       /* Z80 RAM  */
 uint32 zbank;             /* Z80 bank window address */
 uint8 zstate;             /* Z80 bus state (d0 = /RESET, d1 = BUSREQ, d2 = WAIT) */
 uint8 pico_current;       /* PICO current page */
@@ -248,8 +248,8 @@ void gen_reset(int hard_reset)
     m68k.cycles = ((lines_per_frame - 192 + 159 - (27 * vdp_pal)) * MCYCLES_PER_LINE) + 1004;
 
     /* clear RAM (on real hardware, RAM values are random / undetermined on Power ON) */
-    memset(work_ram, 0x00, sizeof (work_ram));
-    memset(zram, 0x00, sizeof (zram));
+    memset(work_ram, 0x00, 0x10000);
+    memset(zram, 0x00, 0x2000);
   }
   else
   {
@@ -339,7 +339,7 @@ void gen_reset(int hard_reset)
     if ((system_hw == SYSTEM_MARKIII) || ((system_hw & SYSTEM_SMS) && (region_code == REGION_JAPAN_NTSC)))
     {
       /* some korean games rely on RAM to be initialized with values different from $00 or $ff */
-      memset(work_ram, 0xf0, sizeof(work_ram));
+      memset(work_ram, 0xf0, 0x10000);
     }
 
     /* reset cartridge hardware */

diff --git a/core/genesis.h b/core/genesis.h
@@ -55,9 +55,9 @@ typedef union
 
 /* Global variables */
 extern external_t ext;
-extern uint8 boot_rom[0x800];
-extern uint8 work_ram[0x10000];
-extern uint8 zram[0x2000];
+extern uint8* boot_rom;
+extern uint8* work_ram;
+extern uint8* zram;
 extern uint32 zbank;
 extern uint8 zstate;
 extern uint8 pico_current;

diff --git a/testbed/new/main.c b/testbed/new/main.c
@@ -624,6 +624,12 @@ void initialize ()
   SZHVC_add = (UINT8* ) calloc(sizeof(UINT8), 2*256*256);
   SZHVC_sub = (UINT8* ) calloc(sizeof(UINT8), 2*256*256);
 
+  // genesis.h
+
+  boot_rom = (uint8*) calloc(sizeof(uint8), 0x800);
+  work_ram = (uint8*) calloc(sizeof(uint8), 0x10000);
+  zram     = (uint8*) calloc(sizeof(uint8), 0x2000);
+
   /* set default config */
   set_config_defaults();