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| author | Miquel Sabaté Solà <mssola@mssola.com> | 2026-09-16 22:34:56 +0200 |
|---|---|---|
| committer | Miquel Sabaté Solà <mssola@mssola.com> | 2026-09-16 22:34:56 +0200 |
| commit | 70a801a43c16fd7a5f61e8d876e5d5c2db48ebe8 (patch) | |
| tree | f1836f8facd9dc69429ab5693afec8d4d326025d /include | |
| download | btree.nes-main.tar.gz btree.nes-main.zip | |
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/apu.s | 4 | ||||
| -rw-r--r-- | include/asm.s | 9 | ||||
| -rw-r--r-- | include/mmc1.s | 5 | ||||
| -rw-r--r-- | include/oam.s | 12 | ||||
| -rw-r--r-- | include/ppu.s | 6 |
5 files changed, 36 insertions, 0 deletions
diff --git a/include/apu.s b/include/apu.s new file mode 100644 index 0000000..8a23c49 --- /dev/null +++ b/include/apu.s @@ -0,0 +1,4 @@ +.scope APU + m_dmc = $4010 + m_frame_counter = $4017 +.endscope diff --git a/include/asm.s b/include/asm.s new file mode 100644 index 0000000..f5d39bc --- /dev/null +++ b/include/asm.s @@ -0,0 +1,9 @@ +;; Pseudo-instruction from 'nasm' that is not available for 'ca65'. An empty +;; implementation is actually quite accurate, as it's just a way for 'nasm' to +;; perform extra checks when programmers want to explicitly make the code fall +;; through. +.ifndef __NASM__ + .macro __fallthrough__ arg + ;; Nothing to do. + .endmacro +.endif diff --git a/include/mmc1.s b/include/mmc1.s new file mode 100644 index 0000000..3a6bc5d --- /dev/null +++ b/include/mmc1.s @@ -0,0 +1,5 @@ +.scope MMC1 + m_control = $8000 + m_chr_bank = $A000 + m_prg_bank = $E000 +.endscope diff --git a/include/oam.s b/include/oam.s new file mode 100644 index 0000000..a73494d --- /dev/null +++ b/include/oam.s @@ -0,0 +1,12 @@ +.scope OAM + ;; 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. + + m_address = $2003 + m_dma = $4014 +.endscope diff --git a/include/ppu.s b/include/ppu.s new file mode 100644 index 0000000..dbef40e --- /dev/null +++ b/include/ppu.s @@ -0,0 +1,6 @@ +.scope PPU + m_control = $2000 + m_mask = $2001 + m_status = $2002 + m_scroll = $2005 +.endscope |