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Copy protection: PROT3

[BBC Micro disc version, Loader 3]

Name: PROT3 [Show more] Type: Subroutine Category: Copy protection Summary: Part of the CHKSM copy protection checksum calculation
Context: See this subroutine in context in the source code References: This subroutine is called as follows: * Elite loader (Part 1 of 3) calls PROT3
.PROT3 LDA CHKSM \ Update the checksum AND CHKSM+1 ORA #&0C ASL A STA CHKSM RTS \ Return from the subroutine JMP P% \ This would hang the computer, but we never get here as \ the checksum code has been disabled