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A comment on The Amstrad CPC 472, an unusual case. Parent comment

Re:The Amstrad CPC 472, an unusual case by tom_ on Tuesday September 15, 2020 @10:37AM (#24481664)
There's an equivalent 6502 routine in Acorn's MOS series, as used in the BBC Micro and derivatives, which had similar text editing functionality.

The code from the BBC Micro version of the OS can be seen here: https://tobylobster.github.io/mos/mos/S-s9.html#SP1

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