Hi, i work on ST10F168 with 1M*16bits external RAM. I declare it in start167.A66 and in option for target/external memory. But in debug mode when i write in it with *p, an error is generate : *** error 65: access violation: ddr=0x002F0000 RAM is declare 0x200000 to 0x300000 I think i forgot something but i don't know what... Thanks Regards