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+## ISA
+### Most instructions follow this format
+| 6bit  | 1bit      | 1bit |      2bit       |     3bit     | 3bit |
+| ----- | --------- | ---- | --------------- | ------------ | ---- |
+| OpCod | Direction | Size | Addressing mode | Register ID  | Specific addressign mode|
+
+| Register ID | Register Name|
+|:-------------:|:-------------:|
+|0 0 0 |AL AX|
+|0 0 1 |CL CX|
+|0 1 0 |DL DX|
+|0 1 1 |BL BX|
+|1 0 0 |AH SP|
+|1 0 1 |CH BP|
+|1 1 0 |DH SI|
+|1 1 1 |BH DI|
+