Moved "bios" to "os"

2020-12-30 20:14:03 +01:00
parent ef58b417e6
commit 53022fdafc
16 changed files with 3 additions and 3 deletions
--- a/assembly/os/tests/sndtest.asm
+++ b/assembly/os/tests/sndtest.asm
@ -0,0 +1,67 @@
+SndTest_test:
+    ; ch1 max volume
+    ld a,%10010000
+    out (SND_DATA_REG),a
+    ; play note ch1
+    ld a,%10000000
+    out (SND_DATA_REG),a
+    ld a,%00100000
+    out (SND_DATA_REG),a
+    ; wait
+    ld bc, 1200
+    call Time_delay55
+
+    ; ch2 max volume
+    ld a,%10110010
+    out (SND_DATA_REG),a
+    ; play note ch2
+    ld a,%10100000
+    out (SND_DATA_REG),a
+    ld a,%00010000
+    out (SND_DATA_REG),a
+    ; wait
+    ld bc, 1200
+    call Time_delay55
+
+    ; ch3 max volume
+    ld a,%11010100
+    out (SND_DATA_REG),a
+    ; play note ch3
+    ld a,%11000000
+    out (SND_DATA_REG),a
+    ld a,%00001000
+    out (SND_DATA_REG),a
+    ; wait
+    ld bc, 2400
+    call Time_delay55
+
+    ; fade ch1,ch2,ch3
+    ld d, 0 ; attenuation
+    sndTest_fade:   ; BROKEN!
+        inc d
+        ; update ch1 atten
+        ld a, d ; use A as attenuation
+        and %10010000; place channel number in upper bits to compose attenuation byte
+        out (SND_DATA_REG),a
+        ; update ch2 atten
+        ld a, d ; use A as attenuation
+        and %10110010; place channel number in upper bits to compose attenuation byte
+        out (SND_DATA_REG),a
+        ; update ch3 atten
+        ld a, d ; use A as attenuation
+        and %11010100; place channel number in upper bits to compose attenuation byte
+        out (SND_DATA_REG),a
+        ; wait
+        ld bc, 100
+        call Time_delay55
+        ; cycle until attenuation is 1111
+        cp d %1111
+        jp nz, sndTest_fade
+
+    ; wait
+    ld bc, 2400
+    call Time_delay55
+
+    ; play noise
+
+    ret