Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region

1 files changed, 2 insertions, 0 deletions

diff --git a/genesis.h b/genesis.h
index ba7c661..a129ddc 100644
--- a/genesis.h
+++ b/genesis.h
@@ -53,6 +53,7 @@ struct genesis_context {
 	uint32_t        reset_cycle;
 	uint8_t         bank_regs[8];
 	uint16_t        z80_bank_reg;
+	uint16_t        tmss_lock[2];
 	uint16_t        mapper_start_index;
 	uint8_t         mapper_type;
 	uint8_t         save_type;
@@ -60,6 +61,7 @@ struct genesis_context {
 	uint8_t         version_reg;
 	uint8_t         bus_busy;
 	uint8_t         reset_requested;
+	uint8_t         tmss;
 	eeprom_state    eeprom;
 	nor_state       nor;
 };