removes sccache

updates display of ben eater pc
doesnt blow up when creating a rom chip anymore
doesnt blow up when creating a pc anymore

core/src/periph/at28c256.rs

@@ -1,4 +1,4 @@
-use crate::mos6502cpu::SIZE_32KB;
+use crate::mos6502cpu::{SIZE_32KB, SIZE_64KB};
 use crate::periph::rom_chip::RomChip;
 
 /// At28C256
@@ -8,24 +8,37 @@ use crate::periph::rom_chip::RomChip;
 /// 256kbit storage
 /// 32kbyte storage
 pub struct At28C256 {
-    data: [u8; SIZE_32KB]
+    data: Box<[u8; SIZE_32KB]>,
+}
+
+impl Default for At28C256 {
+    fn default() -> Self {
+        let vec = vec![0x00; SIZE_32KB];
+        let boxed_slice: Box<[u8]> = vec.into_boxed_slice();
+        let boxed_array: Box<[u8; SIZE_32KB]> = boxed_slice.try_into().expect("Failed to convert Vec to boxed array");
+        At28C256 {
+            data: boxed_array,
+        }
+    }
 }
 
 impl RomChip for At28C256 {
+
     fn read(&self, offset: &u16) -> u8 {
         self.data[*offset as usize]
     }
 
-    fn program(new_data: &[u8; SIZE_32KB]) -> Self {
+    fn program(new_data: Box<[u8; 33554432]>) -> Box<At28C256> {
         println!("Writing new chip.");
-        At28C256 {
-            data: *new_data
-        }
+        let mut working = At28C256::default();
+        working.data = Box::new(*new_data);
+        working.into()
     }
 }
 
 #[cfg(test)]
 mod test {
+    use crate::mos6502cpu::SIZE_1KB;
     use super::*;
 
     #[test]
@@ -36,16 +49,18 @@ mod test {
     #[test]
     fn programmed_data_reads_back_same() {
         print!("Starting test...");
-        let data_to_write = [0xea; SIZE_32KB];
+        let mut data = At28C256::default();
+        for i in 0..SIZE_32KB {
+            data.data[i] = 0xea;
+        }
         print!("allocated data for rom...");
-        let chip: At28C256 = At28C256::program(&data_to_write);
         println!("programmed chip...");
         print!("testing");
         for offset in 0..SIZE_32KB {
-            if offset.is_multiple_of(1000) {
+            if offset.is_multiple_of(SIZE_1KB) {
               print!(".");
             };
-            assert_eq!(0xea, chip.read(&(offset as u16)));
+           assert_eq!(0xea, data.read(&(offset as u16)));
         }
         println!("passed!");
     }

core/src/periph/rom_chip.rs

@@ -8,10 +8,9 @@ pub trait RomChip {
     /// Program
     ///
     /// Replaces all data in the ROM chip
-    fn program(new_data: &[u8; SIZE_32KB]) -> Self;
+    fn program(new_data: Box<[u8; SIZE_32KB]>) -> Box<Self>;
 }
 
 pub trait RamChip: RomChip {
     fn write(&mut self, offset: &u16, value: &u8);
 }
-