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Back to polling that works with the emulators.

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dschmenk 2017-10-24 08:22:01 -07:00
parent 11c1b032cb
commit 7a1d101167
1 changed files with 19 additions and 15 deletions
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34
src/mockingboard/mbtest.pla
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@ -347,7 +347,7 @@ def psgSetup(pVIA)
psgWriteWord(pVIA, CFREQ, $0000)
psgWrite(pVIA, MIXER, $38) // Tone on C, B, A
end
def mbSequence(track)#0
def mbSequence(track)
word seqEvent, seqTime, eventTime, updateTime, period, n
byte numNotes, note, volume, channel, i, overflow, cpuFlags
byte indexA[2], indexB[2], indexC[2]
@ -390,16 +390,17 @@ def mbSequence(track)#0
// Enable timer IRQ
//
cpuFlags = getStatus
disableInts
mbVIA1->IER = $7F // Mask all interrupts
(@mbIRQ).3 = mbVIA1.1 // Relocate IRQ 6522 address
^timerInc = 0 // Clear timer increment
mbInstallIRQ
//(@mbIRQ).3 = mbVIA1.1 // Relocate IRQ 6522 address
//^timerInc = 0 // Clear timer increment
//mbInstallIRQ
mbVIA1->ACR = $40 // Continuos T1 interrupts
mbVIA1=>T1L = $F9C2 // 16 Ints/sec
mbVIA1=>T1C = $F9C2 // 16 Ints/sec
mbVIA1->IFR = $40 // Clear interrupt
mbVIA1->IER = $C0 // Enable Timer1 interrupt
enableInts
//enableInts
repeat
//puts("seqTime = "); puti(seqTime); puts(" eventTime = "); puti(eventTime); putln
if eventTime <= seqTime
@ -474,7 +475,8 @@ def mbSequence(track)#0
psgWrite(mbVIA2, ENVSHAPE, $00) // Single decay
fin
else
eventTime = -1
eventTime = -1 // Exit out
seqEvent = 0 // Signal end of track
break
fin
fin
@ -548,15 +550,15 @@ def mbSequence(track)#0
//
// Increment time tick
//
//seqTime++
//if updateTime < seqTime; updateTime = seqTime; fin
while !(^timerInc)
//while !(mbVIA1->IFR & $40) // Wait for T1 interrupt
if ^$C000 > 127; eventTime = -1; ^$C010; break; fin
//while !(^timerInc)
while !(mbVIA1->IFR & $40) // Wait for T1 interrupt
if ^$C000 > 127; eventTime = -1; break; fin
loop
seqTime = seqTime + ^timerInc
^timerInc = 0
//mbVIA1->IFR = $40 // Clear interrupt
//seqTime = seqTime + ^timerInc
//^timerInc = 0
seqTime++
if updateTime < seqTime; updateTime = seqTime; fin
mbVIA1->IFR = $40 // Clear interrupt
until eventTime < 0
psgWrite(mbVIA1, MIXER, $FF) // Turn everything off
psgWrite(mbVIA1, AENVAMP, $00)
@ -564,14 +566,16 @@ def mbSequence(track)#0
psgWrite(mbVIA1, CENVAMP, $00)
mbVIA1->IER = $7F // Mask all interrupts
setStatus(cpuFlags))
mbUninstallIRQ
//mbUninstallIRQ
if mbVIA2
psgWrite(mbVIA2, MIXER, $FF)
psgWrite(mbVIA2, CENVAMP, $00)
fin
return seqEvent
end
heap = *freemem
if mbSearch
mbSequence(@toneTrack)
^$C010
fin
done