2 ms·
I seem to remember that the 68000 does something similar, using a 16-bit ALU to implement an ISA with 32-bit registers; part of the performance gain upgrading t
by 0xcde4c3db 10y ago
I seem to remember that the 68000 does something similar, using a 16-bit ALU to implement an ISA with 32-bit registers; part of the performance gain upgrading to the 68020 was shaving off the extra cycle from a bunch of instructions thanks to an actual 32-bit ALU.
- kens 10y agoGood point about the 68000. It has three 16-bit processing sections: low address, high address, and data. So it can compute a 32 bit address at once, but takes two steps for a 32 bit ALU operation.