summaryrefslogtreecommitdiffstatshomepage
diff options
context:
space:
mode:
-rw-r--r--src/mess/drivers/pc2000.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/src/mess/drivers/pc2000.c b/src/mess/drivers/pc2000.c
index 728b9370adb..5b846a537b3 100644
--- a/src/mess/drivers/pc2000.c
+++ b/src/mess/drivers/pc2000.c
@@ -741,8 +741,10 @@ INPUT_PORTS_END
void pc2000_state::machine_start()
{
astring region_tag;
- UINT8 *cart = memregion(region_tag.cpy(m_cart->tag()).cat(GENERIC_ROM_REGION_TAG))->base();
UINT8 *bios = memregion("bios")->base();
+ UINT8 *cart = memregion(region_tag.cpy(m_cart->tag()).cat(GENERIC_ROM_REGION_TAG))->base();
+ if (!cart)
+ cart = memregion("bios")->base();
m_bank0->configure_entries(0, 0x10, bios, 0x4000);
m_bank1->configure_entries(0, 0x10, bios, 0x4000);
@@ -753,9 +755,11 @@ void pc2000_state::machine_start()
void gl4004_state::machine_start()
{
astring region_tag;
- UINT8 *cart = memregion(region_tag.cpy(m_cart->tag()).cat(GENERIC_ROM_REGION_TAG))->base();
UINT8 *bios = memregion("bios")->base();
-
+ UINT8 *cart = memregion(region_tag.cpy(m_cart->tag()).cat(GENERIC_ROM_REGION_TAG))->base();
+ if (!cart)
+ cart = memregion("bios")->base();
+
m_bank0->configure_entries(0, 0x20, bios, 0x4000);
m_bank1->configure_entries(0, 0x20, bios, 0x4000);
m_bank2->configure_entries(0, 0x20, bios, 0x4000);