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BBC Micro Elite

Tube: PUTBACK (6502SP version)

Name: PUTBACK [View in context] Type: Subroutine Category: Tube Summary: Reset the OSWRCH vector in WRCHV to point to USOSWRCH
.PUTBACK LDA #128 \ Set A = 128 to denote the first entry in JMPTAB, i.e. \ USOSWRCH \ Fall through into USOSWRCH to set WRCHV to the first \ entry in JMPTAB - in other words, put WRCHV back to \ its original value of USOSWRCH