3 ms·
Until I read this I did not know that 1970s microprocessors had register renaming. Feel a little cheated, thinking for all those years that they were actually m
by dboreham 9mo ago
Until I read this I did not know that 1970s microprocessors had register renaming. Feel a little cheated, thinking for all those years that they were actually moving the bits.
- peterfirefly 9mo agoHow do you think the EXX and EX AF,AF' instructions work on the Z80?
- avadodin 9mo agoAnd EX DE, HL
- WalterBright 9mo agoE to the u, du dx, E to the x, dx!
- avadodin 9mo agoI must admit I do not know what you are referencing here, sir, but it is always a pleasure to run into your comments on HN. So much positive compiler-dad energy.
- WalterBright 9mo agoIt's the MIT song! At least it used to be, it was a long time ago. > always a pleasure to run into your comments on HN. Wow what a nice compliment! Makes my day!
- kens 9mo agoIf you feel cheated now, wait until you find out that the ALU in the 8-bit Z80 was just 4 bits. :-)
- mschaef 9mo agoDoes this have any similarities at all to the fact that the Pentium 4 used a 16-bit ALU?
- dapperdrake 9mo agoIf you work through a math problem with pen and paper or nand2tetris or nandgame.com then it becomes obvious that changing indexes into a register file (a.k.a. pointers) are way faster and easier than wires to move stuff around.