1 uint8 ram_read(uint16 addr);
2 void ram_write(uint16 addr, uint8 data);
3 
4 uint8 port_read(uint8 port);
5 void port_write(uint8 port, uint8 data);
6 
7 uint8 op_busread(uint16 addr);
8 void op_buswrite(uint16 addr, uint8 data);
9 
10 void op_io();
11 debugvirtual uint8 op_read(uint16 addr);
12 debugvirtual void op_write(uint16 addr, uint8 data);
13