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Add MockingBoard select options and Apple /// support
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David Schmenk
parent
be5dfdba4b
commit
14fabc1467
@ -48,6 +48,10 @@ struc t_PSG
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byte ENVSHAPE // Envelope Shape
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end
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//
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// Apple III hardware constants.
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//
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const ENV_REG = $FFDF
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//
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// Sequence event
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//
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struc t_event
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@ -60,10 +64,17 @@ end
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//
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predef musicPlay(track, rept)#0
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predef musicStop#0
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predef spkrSequence(yield, func)#0
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predef a2spkrTone(pitch, duration)#0
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predef a2spkrPWM(sample, speed, len)#0
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//
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// Static sequencer values
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//
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export word musicSequence
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export word musicSequence = @spkrSequence
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export word spkrTone = @a2spkrTone
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export word spkrPWM = @a2spkrPWM
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word instr[] // Overlay with other variables
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word seqTrack, seqEvent, seqTime, eventTime, updateTime
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byte numNotes, seqRepeat
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byte indexA[2], indexB[2], indexC[2]
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@ -76,8 +87,8 @@ word periods[2] = @periods1, @periods2
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// MockingBoard data.
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//
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word[] mbVIAs // Treat this as an array of VIA ptrs
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word mbVIA1 = -1 // Init to "discover MockingBoard flag" value
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word mbVIA2 = 0
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word mbVIA1, mbVIA2
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word mbSlot = -1
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//
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// Octave basis frequency periods (starting at MIDI note #12)
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// Notes will be encoded as basis note (LSNibble) and octave (MSNibble))
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@ -203,7 +214,7 @@ end
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//
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// Apple II speaker tone generator routines
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//
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export asm spkrTone(pitch, duration)#0
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asm a2spkrTone(pitch, duration)#0
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STX ESP
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LDY ESTKH,X
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LDA ESTKL,X
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@ -277,7 +288,7 @@ TONEXIT PLP
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INX
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RTS
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end
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export asm spkrPWM(sample, speed, len)#0
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asm a2spkrPWM(sample, speed, len)#0
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STX ESP
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LDY ESTKH,X
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LDA ESTKL,X
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@ -317,6 +328,22 @@ export asm spkrPWM(sample, speed, len)#0
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INX
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RTS
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end
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def a3spkrTone(pitch, duration)#0
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byte env
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env = ^ENV_REG
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^ENV_REG = env | $C0
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a2spkrTone(pitch, duration)
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^ENV_REG = env
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end
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def a3spkrPWM(sample, speed, len)#0
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byte env
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env = ^ENV_REG
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^ENV_REG = env | $C0
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a2spkrPWM(sample, speed, len)
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^ENV_REG = env
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end
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//
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// Search slots for MockingBoard
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//
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@ -344,25 +371,27 @@ def mbTicklePSG(pVIA)
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return 0
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end
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def mbSearch(slot)
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if slot
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mbVIA1 = mbTicklePSG($C000 + (slot << 8))
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if mbVIA1
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mbVIA2 = mbTicklePSG(mbVIA1 + $80)
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return slot
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fin
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else
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for slot = 1 to 7
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if slot == 3 or slot == 6
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continue
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fin
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if MACHID <> $F2 and slot >= 0 and slot <= 7// Apple 3
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if slot
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mbVIA1 = mbTicklePSG($C000 + (slot << 8))
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if mbVIA1
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mbVIA2 = mbTicklePSG(mbVIA1 + $80)
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return slot
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fin
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next
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else
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for slot = 1 to 7
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if slot == 3 or slot == 6
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continue
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fin
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mbVIA1 = mbTicklePSG($C000 + (slot << 8))
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if mbVIA1
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mbVIA2 = mbTicklePSG(mbVIA1 + $80)
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return slot
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fin
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next
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fin
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fin
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return 0
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return -1
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end
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def psgSetup(pVIA)#0
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psgWrite(pVIA, MIXER, $3F) // Turn everything off
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@ -672,7 +701,7 @@ def spkrSequence(yield, func)#0
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if numNotes > 1
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for i = 0 to MAX_SPKR_NOTES-1
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if notes1[i]
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spkrTone(periods1[i], arpeggioDuration[numNotes])
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spkrTone(periods1[i], arpeggioDuration[numNotes])#0
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fin
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*rndseed++
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next
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@ -688,7 +717,7 @@ def spkrSequence(yield, func)#0
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next
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duration = eventTime - seqTime
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seqTime = duration + seqTime
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spkrTone(period, DUR16TH * duration)
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spkrTone(period, DUR16TH * duration)#0
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fin
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if ^$C000 > 127; return; fin
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if yieldTime <= seqTime; func()#0; yieldTime = seqTime + yield; fin
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@ -709,7 +738,7 @@ def noSequence(yield, func)#0
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seqTime++
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if seqTime < 0; seqTime = 1; fin // Capture wrap-around
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*rndseed++
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spkrTone(0, DUR16TH) // Waste 16th of a second playing silence
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a2spkrTone(0, DUR16TH) // Waste 16th of a second playing silence
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if ^$C000 > 127; return; fin
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if yield == seqTime; func()#0; seqTime = 0; fin
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until FALSE
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@ -721,22 +750,17 @@ export def musicPlay(track, rept)#0
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byte i
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//
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// First time search for MockingBoard
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// Select proper sequencer based on hardware
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//
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if mbVIA1 == -1
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if !mbSearch(0)
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//
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// No MockingBoard - scale octave0 for speaker
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//
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for i = 0 to 11
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spkrOctave0[i] = mbOctave0[i]/NOTEDIV
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next
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fin
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if mbSlot > 0
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musicSequence = @mbSequence
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else
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musicSequence = @spkrSequence
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fin
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//
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// Zero out active notes
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//
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for i = 0 to MAX_MBCH_NOTES-1; notes1[i] = 0; notes2[i] = 0; next
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for i = 0 to MAX_MBCH_NOTES-1; notes1[i] = 0; notes2[i] = 0; next
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for i = 0 to MAX_MBCH_NOTES-1; periods1[i] = 0; periods2[i] = 0; next
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//
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// Start sequencing
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@ -747,14 +771,6 @@ export def musicPlay(track, rept)#0
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seqTime = 0
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eventTime = seqEvent->deltatime
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numNotes = 0
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//
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// Select proper sequencer based on hardware
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//
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if mbVIA1
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musicSequence = @mbSequence
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else
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musicSequence = @spkrSequence
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fin
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end
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//
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// Stop sequencing music track
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@ -772,6 +788,36 @@ export def musicGetKey(yield, backgroundProc)#1
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^$C010
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return ^$C000
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end
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when MACHID & MACHID_MODEL
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is MACHID_III
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spkrTone = @a3spkrTone
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spkrPWM = @a3spkrPWM
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break
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is MACHID_I
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puts("Sound unsupported.\n")
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return -1
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break
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otherwise
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puts("MockingBoars Slot:\n")
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puts("ENTER = None\n")
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puts("0 = Scan\n")
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puts("1-7 = Slot #\n")
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instr = gets('>'|$80)
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if ^instr
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mbSlot = mbSearch(^(instr + 1) - '0')
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fin
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if mbSlot < 0
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//
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// No MockingBoard - scale octave0 for speaker
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//
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for instr = 0 to 11
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spkrOctave0[instr] = mbOctave0[instr]/NOTEDIV
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next
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fin
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break
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wend
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done
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////////////////////////////////////////////////////////////////////////////////
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@ -805,13 +851,13 @@ musicGetKey(yieldtime, yieldproc)
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The low level internal speaker routines used to generate tones and waveforms
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can be called for warnings, sound effects, etc:
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spkrTone(period, duration)
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spkrTone(period, duration)#0
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Play a tone
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Params:
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(1020000 / 64 / period) Hz
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(duration * 32 * 256 / 1020000) seconds
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spkrPWM(samples, speed, len)
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spkrPWM(samples, speed, len)#0
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Play a Pulse Width Modulated waveform
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Params:
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Pointer to 8 bit pulse width samples
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