Video DMA Block

Start Address	Stop Address	Register Description	Additional Info
$AF:0400	$AF:0400	VDMA_CONTROL_REG	VDMA control register Bit Name Purpose VDMA_CTRL_Enable $01 Enabled the VDMA transfer block VDMA_CTRL_1D_2D $02 0 - 1D (Linear) Transfer, 1 - 2D (Block) Transfer
$AF:0401	$AF:0401	VDMA_STATUS_REG
$AF:0402	$AF:0402	VDMA_SRC_ADDY_L	24-bit address of the source block (relative to start of video RAM)
$AF:0403	$AF:0403	VDMA_SRC_ADDY_M
$AF:0404	$AF:0404	VDMA_SRC_ADDY_H
$AF:0405	$AF:0405	VDMA_DST_ADDY_L	24-bit address of the source block (relative to start of video RAM)
$AF:0406	$AF:0406	VDMA_DST_ADDY_M
$AF:0407	$AF:0407	VDMA_DST_ADDY_H
$AF:0408	$AF:0408	VDMA_SIZE_L / VDMA_X_SIZE_L	For 1-D DMA, 24-bit size of transfer in bytes. For 2-D, 16-bit width of block
$AF:0409	$AF:0409	VDMA_SIZE_M / VDMA_X_SIZE_H
$AF:040A	$AF:040A	VDMA_SIZE_H / VDMA_Y_SIZE_L	For 2-D transfer, 16-bit height of block
$AF:040B	$AF:040B	VDMA_RESERVED_0 / VDMA_Y_SIZE_H
$AF:040C	$AF:040C	VDMA_SRC_STRIDE_L	Number of bytes per row in a 2-D source block
$AF:040D	$AF:040D	VDMA_SRC_STRIDE_H
$AF:040E	$AF:040E	VDMA_DST_STRIDE_L	Number of bytes per row in a 2-D destination block
$AF:040F	$AF:040F	VDMA_DST_STRIDE_H