86 lines
1.4 KiB
NASM
86 lines
1.4 KiB
NASM
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SECTION "HRAM", HRAM
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; The OAM DMA routine
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hOAMDMA::
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ds 8 ; OAMDMAEnd - OAMDMA
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; Currently-loaded ROM bank, useful to save back (eg. during ints)
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hCurROMBank::
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db
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; Used by the PB16 decompressor
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pb16_byte0::
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db
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; Place variables that need to be zero-cleared on init (and soft-reset) below
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hClearStart::
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; Used to let VBlank know it need to ACK
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; NOTE: VBlank doesn't preserve AF **on purpose** when this is set
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; Thus, make sure to wait for Z set before continuing
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hVBlankFlag::
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db
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; Values transferred to hw regs on VBlank
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hLCDC::
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db
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hSCY::
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db
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hSCX::
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db
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hWY::
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db
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hWX::
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db
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hBGP::
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db
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hOBP0::
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db
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hOBP1::
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db
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; Low byte of the current scanline buffer
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; Permits double-buffering
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hWhichScanlineBuffer::
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db
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; Low byte of byte read by STAT handler
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; NO TOUCHY
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hScanlineFXIndex::
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db
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; Scanline FX buffers (scanline, addr, value)
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; Double-buffering used to prevent ract conditions
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hScanlineFXBuffer1::
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ds 3 * 5 + 1
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hScanlineFXBuffer2::
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ds 3 * 5 + 1
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; Addr/value pair to allow writing to 2 regs in the same scanline
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hSecondFXAddr::
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db
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hSecondFXValue::
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db
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hIsTextboxActive::
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db
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hBackupScanlineFXBuffer::
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ds 3 * 5 + 1
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; Joypad regs
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hHeldButtons::
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db
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hPressedButtons::
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db
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; High byte of the shadow OAM buffer to be transferred
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; Reset by the VBlank handler to signal transfer completion
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hOAMBufferHigh::
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db
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