more chips

more docs

core/src/periph/hm62256/romchip.rs

@@ -4,13 +4,6 @@ use crate::periph::hm62256::Hm62256;
 use crate::traits::memory_chip::MemoryChip;
 use crate::traits::rom_chip::RomChip;
 
-impl MemoryChip for Hm62256 {
-    fn read(&self, offset: &u16) -> u8 {
-        // loops memory around past 32k
-        let effective = *offset as i32 % SIZE_32KB as i32;
-        self.data[effective as usize]
-    }
-}
 
 impl RomChip for Hm62256 {
     fn program(_: &[u8]) -> Box<Self> {