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added the downshifts.

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This commit is contained in:
Lokathor 2018-12-24 16:02:47 -07:00
parent 51dbb749ef
commit 1dcecb72cb
1 changed files with 3 additions and 3 deletions
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6
src/io/dma.rs
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@ -71,7 +71,7 @@ impl DMAControlSetting {
pub const DEST_ADDR_CONTROL_MASK: u16 = 0b11 << 5;
pub fn dest_address_control(self) -> DMADestAddressControl {
// TODO: constify
match self.0 & Self::DEST_ADDR_CONTROL_MASK {
match (self.0 & Self::DEST_ADDR_CONTROL_MASK) >> 5 {
0 => DMADestAddressControl::Increment,
1 => DMADestAddressControl::Decrement,
2 => DMADestAddressControl::Fixed,
@ -86,7 +86,7 @@ impl DMAControlSetting {
pub const SRC_ADDR_CONTROL_MASK: u16 = 0b11 << 7;
pub fn src_address_control(self) -> DMASrcAddressControl {
// TODO: constify
match self.0 & Self::SRC_ADDR_CONTROL_MASK {
match (self.0 & Self::SRC_ADDR_CONTROL_MASK) >> 7 {
0 => DMASrcAddressControl::Increment,
1 => DMASrcAddressControl::Decrement,
2 => DMASrcAddressControl::Fixed,
@ -104,7 +104,7 @@ impl DMAControlSetting {
pub const START_TIMING_MASK: u16 = 0b11 << 12;
pub fn start_timing(self) -> DMAStartTiming {
// TODO: constify
match self.0 & Self::DEST_ADDR_CONTROL_MASK {
match (self.0 & Self::DEST_ADDR_CONTROL_MASK) >> 12 {
0 => DMAStartTiming::Immediate,
1 => DMAStartTiming::VBlank,
2 => DMAStartTiming::HBlank,