Skip to navigation

Elite on the BBC Micro

Maths (Arithmetic): MUT2

[6502 Second Processor version]

Name: MUT2 [Show more] Type: Subroutine Category: Maths (Arithmetic) Summary: Calculate (S R) = XX(1 0) and (A P) = Q * A
Context: See this subroutine in context in the source code References: This subroutine is called as follows: * STARS1 calls MUT2

Do the following assignment, and multiplication of two signed 8-bit numbers: (S R) = XX(1 0) (A P) = Q * A
.MUT2 LDX XX+1 \ Set S = XX+1 STX S \ Fall through into MUT1 to do the following: \ \ R = XX \ (A P) = Q * A