4. use a small amount of "rich" instructions to do powerful things
4. use a small amount of "rich" instructions to do powerful things
5. 1 instruction per clock cycle
5. 1 instruction per clock cycle
BIG CHANGE:
So, apparently making a single-cycle CPU is extremely hard... so instead, we'll be striving for a 2-cycle CPU.
Usual cycles:
1-cycle: mov, jmp, etc general data movement
2-cycle: ALU operations
1-cycle with memory wait(so really 2 cycle): all instructions that reference memory
Relative moves:
Relative moves:
In order to provide uesfulness to the segment-carryover feature, there are a few options for moving a "relative" amount to a register, including IP and SP
In order to provide uesfulness to the segment-carryover feature, there are a few options for moving a "relative" amount to a register, including IP and SP
A relative move differs in most of the opcodes in that the relative factor is treated as a signed value.
A relative move differs in most of the opcodes in that the relative factor is treated as a signed value.
