gbdev/pandocs

What happens when HDMA triggers in the middle of an OAM DMA?

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#270 opened on Mar 21, 2021

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Description

Does the HDMA manage to read the data? Does the OAM DMA continue during the HDMA copy? Etc.

Contributor guide

Research direction
Examine the Game Boy CPU timing documentation and test using an emulator or hardware to determine the behavior of HDMA during an OAM DMA transfer.
Tech stack
None
Domain
None
Issue type
Research
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Game Boy hardware basicsDMA concepts
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40