On Wed, 6 Aug 2025 05:42:55 -0400, David Cole <[email protected]> wrote:

>Why use B in one case and C in the other?

I see what you are asking. Why 'B'? I don't know. Does any other opcode use B 
for Byte? Lots of C's: MVC, CLC, ICM, STC, ...

I agree -- LC would have made more sense. Other than it might be construed as 
or reserved for Load Complement; analogous to LCR.

Charles

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