ADDRESS_SPACE cpu_ram RAMB16 [0x0000:0x1fff] BUS_BLOCK main_mem_A/gldata_ram3 [31:24]; main_mem_A/gldata_ram2 [23:16]; main_mem_A/gldata_ram1 [15:8]; main_mem_A/gldata_ram0 [7:0]; END_BUS_BLOCK; END_ADDRESS_SPACE;