Re: Custom lua instruction format

Subject: Re: Custom lua instruction format
From: Jonathan Goble &lt;jcgoble3@ ... &gt;
Date: Sun, 7 Jun 2020 12:29:50 -0400

On Sun, Jun 7, 2020, 12:58 AM Egor Skriptunoff <egor.skriptunoff@gmail.com> wrote:

On Sun, Jun 7, 2020 at 5:49 AM Baozeng wrote:
The register is represented by `A`, which is still 8 bits. I have not changed it. Only `B` is changed from 9 bits to 8 bits. and `C` is changed from 9 bits to 8 bits.

RK(B) encodes either register or constant (256 registers and 256 constants, 9 bits in total)
If your B is 8 bits then only 128 registers are addressable?

As I described, Lua 5.4 has only 8 bits for B. It can still address 256 registers because it uses separate instructions for constants.