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dma irqs: got rhythm tongoku working

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Matthew Berry 2021-02-20 18:44:55 -08:00
parent 3c13802653
commit 33979013c3
1 changed files with 8 additions and 0 deletions
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8
src/crab/dma.cr
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@ -21,6 +21,8 @@ class DMA
end
end
@interrupt_flags : Array(Proc(Nil))
def initialize(@gba : GBA)
@dmasad = Array(UInt32).new 4, 0
@dmadad = Array(UInt32).new 4, 0
@ -28,6 +30,8 @@ class DMA
@dmacnt_h = Array(Reg::DMACNT).new 4 { Reg::DMACNT.new 0 }
@src = Array(UInt32).new 4, 0
@dst = Array(UInt32).new 4, 0
@interrupt_flags = [->{ @gba.interrupts.reg_if.dma0 = true }, ->{ @gba.interrupts.reg_if.dma1 = true },
->{ @gba.interrupts.reg_if.dma2 = true }, ->{ @gba.interrupts.reg_if.dma3 = true }]
@src_mask = [0x07FFFFFF, 0x0FFFFFFF, 0x0FFFFFFF, 0x0FFFFFFF]
@dst_mask = [0x07FFFFFF, 0x07FFFFFF, 0x07FFFFFF, 0x0FFFFFFF]
@len_mask = [0x3FFF, 0x3FFF, 0x3FFF, 0xFFFF]
@ -136,5 +140,9 @@ class DMA
@dst[channel] = @dmadad[channel] if dest_control == AddressControl::IncrementReload
dmacnt_h.enable = false unless dmacnt_h.repeat && start_timing != StartTiming::Immediate
if dmacnt_h.irq_enable
@interrupt_flags[channel].call
@gba.interrupts.schedule_interrupt_check
end
end
end