dolphin/Source/DSPSpy/tests/accelerator_loop_test.ds
Léo Lam 7c01127ac6 DSPSpy: Add a test for accelerator loop
This adds a test ucode that can be used to check the accelerator loop
behaviour with various start/end addresses.

It's actually more of a test template than a ready to use test.
2017-09-22 20:17:38 +02:00

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incdir "tests"
include "dsp_base.inc"
; Test parameters
lri $AC0.M, #0x0000 ; start
lri $AC0.L, #0x0000 ; start
lri $AC1.M, #0x0000 ; end
lri $AC1.L, #0x0011 ; end
; Reset some registers
lri $AC0.H, #0xffff
sr @0xffda, $AC0.H ; pred scale
sr @0xffdb, $AC0.H ; yn1
sr @0xffdc, $AC0.H ; yn2
; Set the sample format
lri $AC0.H, #0x0
sr @0xffd1, $AC0.H
; Set the starting and current address
srs @ACSAH, $AC0.M
srs @ACCAH, $AC0.M
srs @ACSAL, $AC0.L
srs @ACCAL, $AC0.L
; Set the ending address
srs @ACEAH, $AC1.M
srs @ACEAL, $AC1.L
call load_hw_reg_to_regs
call send_back ; check the accelerator regs before a read
bloopi #40, end_of_loop
lr $IX3, @ARAM
call load_hw_reg_to_regs
call send_back ; after a read
end_of_loop:
nop
jmp end_of_test
load_hw_reg_to_regs:
lr $AR0, @0xffd1 ; format
lr $AR1, @0xffd2 ; unknown
lr $AR2, @0xffda ; pred scale
lr $AR3, @0xffdb ; yn1
lr $IX0, @0xffdc ; yn2
lr $IX1, @0xffdf ; unknown accelerator register
lri $AC0.H, #0
lrs $AC0.M, @ACSAH
lrs $AC0.L, @ACSAL
lri $AC1.H, #0
lrs $AC1.M, @ACEAH
lrs $AC1.L, @ACEAL
lrs $AX0.H, @ACCAH
lrs $AX0.L, @ACCAL
lrs $AX1.H, @ACCAH
lrs $AX1.L, @ACCAL
lrs $AX1.H, @ACCAH
lrs $AX1.L, @ACCAL
ret