mos_setkbvector OS call, so user programs can access VDP keyboard packets#73
Merged
breakintoprogram merged 1 commit intobreakintoprogram:mainfrom Aug 3, 2023
tomm:mos_setkbvector
Merged
mos_setkbvector OS call, so user programs can access VDP keyboard packets#73breakintoprogram merged 1 commit intobreakintoprogram:mainfrom tomm:mos_setkbvector
breakintoprogram merged 1 commit intobreakintoprogram:mainfrom
tomm:mos_setkbvector
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Corresponding BBC BASIC INKEY implementation: breakintoprogram/agon-bbc-basic#56 |
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Thanks for the changes - I am going to improve the keyboard handling anyway, but this makes sense too. |
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This PR lets userspace programs have access to VDP keyboard packets, without having to override the whole uart0 interrupt. There is example code here: https://github.com/tomm/agon-mos/tree/main/bin
For BBC BASIC, INKEY with a negative argument (to perform a non-blocking lookup of key up/down state) is implemented using this mos_setkbvector call: https://github.com/tomm/agon-bbc-basic/tree/inkey-with-negative-arg