Untitled
By: a guest | Mar 20th, 2010 | Syntax:
None | Size: 0.63 KB | Hits: 90 | Expires: Never
DMA:
$420B Enable 76543210, set bit-corresponding channel, prohibited if HDMA channel is set,
lowest channel done first, HDMA done first
$43x0 Control o00dfmmm
o (orientation): 0 for source->dest, 1 for dest->source
d (decrement?): 0 for increment, 1 for decrement
f (fixed?): 0 for dynamic, 1 for fixed
m (method): 000 for single 8-bit, 001 for single 16-bit,
010 for double 8-bit, 011 for streched 16-bit, 100 for double 16-bit
$43x1 Dest offset 8-bit offset from $2100
$43x2 Source 24-bit pointer
$43x5 Byte count $0000 means $10000
Maximum of 6K can be transfered during VBlank