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| author | Miquel Sabaté Solà <mssola@mssola.com> | 2025-12-10 14:41:35 +0100 |
|---|---|---|
| committer | Miquel Sabaté Solà <mssola@mssola.com> | 2025-12-15 15:31:06 +0100 |
| commit | 74b1003ab8abad2f8220de4f2f18a3b118f23f01 (patch) | |
| tree | b7f2d491d708fa900d4dd9649eb5bd7fab3e8686 /include/oam.s | |
| parent | e6d9bd9f7acfd0e40025b2d579a7faff0d04ef0a (diff) | |
| download | jetpac.nes-74b1003ab8abad2f8220de4f2f18a3b118f23f01.tar.gz jetpac.nes-74b1003ab8abad2f8220de4f2f18a3b118f23f01.zip | |
Adapt the code to play well with nasm's asan
The address sanitizer from nasm provides quite a few goodies, so let's
adapt the code more to it to benefit from those.
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
Diffstat (limited to 'include/oam.s')
| -rw-r--r-- | include/oam.s | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/include/oam.s b/include/oam.s index 22935b2..a73494d 100644 --- a/include/oam.s +++ b/include/oam.s @@ -1,11 +1,12 @@ .scope OAM - ADDRESS = $2003 - DMA = $4014 -.endscope + ;; Region in internal RAM where sprites are being allocated for later use in + ;; the DMA process. The entire page is reserved, as there are 64 sprites x 4 + ;; bytes each = 256 bytes in total. + m_sprites = $200 ; asan:reserve $100 + + ;;; + ;; Actual addresses from OAM space. -.macro OAM_WRITE_SPRITES - lda #$00 - sta OAM::ADDR - lda #$02 - sta OAM::DMA -.endmacro + m_address = $2003 + m_dma = $4014 +.endscope |