reworked assigner note on
This commit is contained in:
Gordon JC Pearce
parent
72fa8a2aab
commit
3e16f5314f
@ -2,6 +2,8 @@
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#include "cpuboard.hpp"
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// startup needs to clear RAM etc
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// 0xffbe = 0x0c; transpose = 12;
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// Disassembly of assigner.bin, 8192 bytes [0x0 to 0x1fff]
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// ; start
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// 0000: 4e 9a JRE $009C
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@ -20,7 +22,7 @@
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// 000a: 04 08 10 LXI SP,$1008
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// 000d: 20 40 INRW $0040
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// 000f: 80 CALT ($0080)
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//
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// ; bit patterns used for Note Off
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// ; ANDed with a flag byte to mask it off
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// 0010: fe JR $000F
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@ -30,7 +32,7 @@
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// 0014: ef JR $0004
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// 0015: df JR $0035
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// 0016: bf 7f STAX (HL+$7F)
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//
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// ; timer/event
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// 0018: 00 NOP
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// 0019: 00 NOP
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@ -873,7 +875,7 @@
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// 0592: 11 EXX
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// 0593: aa EI
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// 0594: 62 RETI
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//
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// ; serial interrupt handler
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// 0595: 10 EXA
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// 0596: 11 EXX
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@ -910,7 +912,7 @@
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// 05d5: 75 a0 00 EQIW $00A0,$00
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// 05d8: 71 a0 80 MVIW $00A0,$80
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// 05db: d3 JR $05EF ; return from interrupt
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//
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// ; handle control change
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// 05dc: 1b MOV C,A
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// 05dd: 0a MOV A,B
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@ -927,7 +929,7 @@
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// 05f0: 11 EXX
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// 05f1: aa EI
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// 05f2: 62 RETI
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//
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// ; wasn't control or note
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// 05f3: 67 c0 NEI A,$C0 ; program change?
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// 05f5: c4 JR $05FA
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@ -1050,142 +1052,200 @@
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//
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// ; handle note on/off?
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// ; called with status in $ff4e, value in $ff3e and velocity in C
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// 06ca: 01 3e LDAW $003E ; first byte
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// 06cc: 27 17 GTI A,$17 ; greater than 23
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// 06ce: 4e 36 JRE $0706 ; no, add an octave
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// 06d0: 37 6d LTI A,$6D ; less than 108
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// 06d2: 4e 36 JRE $070A ; no, subtract an octave
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// 06d4: 74 e0 be SUBW $00BE ; subtract a value - transpose?
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// 06d7: 1a MOV B,A ; save in b
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// 06d8: 48 22 SLR B
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// 06da: 48 22 SLR B
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// 06dc: 48 22 SLR B ; divide by 8
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// 06de: 07 07 ANI A,$07 ; lower three bits
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// 06e0: 75 4e 90 EQIW $004E,$90 ; note on?
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// 06e3: d5 JR $06F9 ; no, jump ahead
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// 06e4: 74 6b 00 NEI C,$00 ; velocity 0
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// 06e7: d1 JR $06F9 ; no, jump ahead
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// ; otherwise fall through and handle Note On
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// 06e8: 34 08 00 LXI HL,$0008 ; lookup table runs 01, 02, 04, 08, 10, 20, 40, 80
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// ; inverse of the one at 0x0010
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// 06eb: ac LDAX (HL+A) ; look up table based on note
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// 06ec: 1b MOV C,A ; save
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// 06ed: 34 40 ff LXI HL,$FF40 ; bit flags
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// 06f0: ad LDAX (HL+B) ; byte pointed to by upper part
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// 06f1: 60 9b ORA A,C ; or in whichever note is flagged
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// 06f3: bd STAX (HL+B) ; save in flag
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//
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// ;
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// 06f4: 71 3f 01 MVIW $003F,$01 ; expect two bytes
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// 06f7: 4f 53 JRE $064C ; return
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//
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// ; note off?
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// ; A contains lower three bits of note, B contains upper 4 bits
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// 06f9: 34 10 00 LXI HL,$0010 ; lookup table runs fe, fd, fb, f7, ef, df, bf, 7f
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// ; inverse of 0x0008
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// 06fc: ac LDAX (HL+A) ; look up the table based on the note
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// 06fd: 1b MOV C,A ; fetch value, store in C
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// 06fe: 34 40 ff LXI HL,$FF40 ; table in RAM
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// 0701: ad LDAX (HL+B) ; $FF40 + upper four bits as offset
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// 0702: 60 8b ANA A,C ; mask off the bit for the note
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// 0704: bd STAX (HL+B) ; store at $FF40 + offset
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// 0705: ee JR $06F4
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//
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// ; add or subtract an octave to bring out-of-range notes in
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// 0706: 46 0c ADI A,$0C ; add 12 to note value in A
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// 0708: 4f c2 JRE $06CC ; jump back and test if it's in range yet
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// 070a: 66 0c SUI A,$0C ; subtract 12 from note value in A
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// 070c: 4f c2 JRE $06D0 ; jump back and test if it's in range yet
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//
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// ; store first value
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// 070e: 63 3e STAW $003E
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// 0710: 4f 3a JRE $064C ; return from interrupt
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//
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// ; control change?
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// 0712: 01 3e LDAW $003E ; parameter?
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// 0714: 27 7a GTI A,$7A ; all notes off, or higher?
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// 0716: 4e 35 JRE $074D
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// 0718: 45 4f 40 ONIW $004F,$40 ; flag variable
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// 071b: 4f d7 JRE $06F4
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// 071d: 67 7b NEI A,$7B ; all notes off?
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// 071f: 4e 51 JRE $0772
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// 0721: 47 02 ONI A,$02 ; mono/poly (but ignored according to the manual)
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// 0723: c8 JR $072C
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// 0724: 05 4f fd ANIW $004F,$FD ; flag variable
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// 0727: 47 01 ONI A,$01 ; omni on
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// 0729: 4e 4d JRE $0778 ; set omni off
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// 072b: c8 JR $0734
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// 072c: 05 4f fe ANIW $004F,$FE ; clear flag variable bit 0
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// 072f: 47 01 ONI A,$01 ; if mono on?
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// 0731: 15 4f 01 ORIW $004F,$01 ; set flag variable?
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// 0734: 69 03 MVI A,$03
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// 0736: 74 88 4f ANAW $004F
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// 0739: 15 4f 20 ORIW $004F,$20
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// 073c: 77 01 EQI A,$01
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// 073e: 05 4f df ANIW $004F,$DF
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// 0741: 6a 0d MVI B,$0D ; 14 values
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// 0743: 69 00 MVI A,$00 ; zero out note flags
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// 0745: 34 40 ff LXI HL,$FF40 ; table in RAM for note flags
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// 0748: 3d STAX (HL+) ; store
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// 0749: 52 DCR B
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// 074a: fd JR $0748 ; loop
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// 074b: 4f a7 JRE $06F4 ; expect two bytes
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// 074d: 77 40 EQI A,$40 ; sustain
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// 074f: ce JR $075E
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// 0750: 74 6b 00 NEI C,$00 ; value is zero
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// 0753: c5 JR $0759
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// 0754: 15 b6 10 ORIW $00B6,$10 ; sustain on
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// 0757: 4f 9b JRE $06F4
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// 0759: 15 b6 08 ORIW $00B6,$08 ; sustain off
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// 075c: 4f 96 JRE $06F4
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// 075e: 77 01 EQI A,$01 ; mod wheel
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// 0760: 4f 92 JRE $06F4 ; expect two bytes and return (running status)
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// 0762: 55 a8 20 OFFIW $00A8,$20 ; midi mode 0
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// 0765: c7 JR $076D ; continue
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// 0766: 0b MOV A,C ; get byte
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// 0767: 17 80 ORI A,$80 ; set bit?
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// 0769: 63 a2 STAW $00A2 ; mod wheel value?
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// 076b: 4f 87 JRE $06F4 ; expect two bytes and return (running status)
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// 076d: 71 a2 80 MVIW $00A2,$80 ; mod wheel off?
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// 0770: 4f 82 JRE $06F4 ; expect two bytes and return
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//
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// ; handle all notes off
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// 0772: 5d 4f BIT 5,$004F ; all notes off?
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// 0774: 4f 7e JRE $06F4 ; expect two bytes and return
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// 0776: 4f c9 JRE $0741 ; wipe a table
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// 0778: 74 7b 01 EQI C,$01
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// 077b: 15 4f 02 ORIW $004F,$02
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// 077e: 4f b4 JRE $0734
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//
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// ; program change
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// 0780: 55 a8 20 OFFIW $00A8,$20 ; Midi mode 0?
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// 0783: c5 JR $0789 ; skip ahead and do nothing
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// 0784: 0b MOV A,C ; get prog
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// 0785: 17 80 ORI A,$80 ; bit 7
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// 0787: 63 a3 STAW $00A3 ; store
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// 0789: 71 3f 00 MVIW $003F,$00 ; expect one byte (running status)
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// 078c: 54 4c 06 JMP $064C ; return
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//
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// ; bend
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// 078f: 55 a8 20 OFFIW $00A8,$20 ; midi mode 0?
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// 0792: d7 JR $07AA ; clear and end
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// 0793: 0b MOV A,C
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// 0794: 18 MOV EAH,A ; EAH gets msb
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// 0795: 01 3e LDAW $003E ; lsb
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// 0797: 48 25 SLL A ; multiply by two
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// 0799: 19 MOV EAL,A ; EA contains 14-bit bend multiplied by 2
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// 079a: 48 a4 DSLL EA ; left aligned
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// 079c: 08 MOV A,EAH
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// 079d: 47 80 ONI A,$80 ; negative?
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// 079f: c4 JR $07A4
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// 07a0: 63 a1 STAW $00A1 ; save in ffa1
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// 07a2: 4f 50 JRE $06F4 ; return, two byte running status
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// 07a4: 16 ff XRI A,$FF ; invert
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// 07a6: 63 a0 STAW $00A0 ; save in ffa0
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// 07a8: 4f 4a JRE $06F4 ; return, two byte running status
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// 07aa: 71 a1 80 MVIW $00A1,$80 ; reset bend?
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// 07ad: 4f 45 JRE $06F4 ; return, two byte running status
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//
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void Assigner::noteOn(uint8_t c) {
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// 06ca: 01 3e LDAW $003E ; first byte
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a = ram[0x3e];
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h06cc:
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// 06cc: 27 17 GTI A,$17 ; greater than 23
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// 06ce: 4e 36 JRE $0706 ; no, add an octave
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if (a > 0x17) {
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// skip
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} else
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goto h0706;
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h06d0:
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// 06d0: 37 6d LTI A,$6D ; less than 108
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// 06d2: 4e 36 JRE $070A ; no, subtract an octave
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if (a < 0x6d) {
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// skip
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} else
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goto h070a;
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// 06d4: 74 e0 be SUBW $00BE ; subtract a value - transpose?
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a -= ram[0xbe];
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// 06d7: 1a MOV B,A ; save in b
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b = a;
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// 06d8: 48 22 SLR B
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// 06da: 48 22 SLR B
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// 06dc: 48 22 SLR B ; divide by 8
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b >>= 3;
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// 06de: 07 07 ANI A,$07 ; lower three bits
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a &= 0x07;
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// 06e0: 75 4e 90 EQIW $004E,$90 ; note on?
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// 06e3: d5 JR $06F9 ; no, jump ahead
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if (ram[0x4e] == 0x90) {
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// skip
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} else
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goto h06f9;
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// 06e4: 74 6b 00 NEI C,$00 ; velocity 0
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// 06e7: d1 JR $06F9 ; no, jump ahead
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if (c != 0) {
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// skip
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} else
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goto h06f9;
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// ; otherwise fall through and handle Note On
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// 06e8: 34 08 00 LXI HL,$0008 ; lookup table runs 01, 02, 04, 08, 10, 20, 40, 80
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// ; inverse of the one at 0x0010
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// 06eb: ac LDAX (HL+A) ; look up table based on note
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hl = 0x08;
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a = bitMask[hl + a]; // fetch bit corresponding to lower bits of note
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// 06ec: 1b MOV C,A ; save
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// 06ed: 34 40 ff LXI HL,$FF40 ; bit flags
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// 06f0: ad LDAX (HL+B) ; byte pointed to by upper part
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// 06f1: 60 9b ORA A,C ; or in whichever note is flagged
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// 06f3: bd STAX (HL+B) ; save in flag
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c = a; // save A for later
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hl = 0x40; // MIDI key bitmap
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a = ram[hl + b];
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a |= c;
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ram[hl + b] = a; // OR in the bit we saved and save it back
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// ; this sets up the MIDI routine to expect a two-byte message again
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// which allows for running status
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// 06f4: 71 3f 01 MVIW $003F,$01 ; expect two bytes
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// 06f7: 4f 53 JRE $064C ; return
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return;
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h06f9:
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// ; note off?
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// ; A contains lower three bits of note, B contains upper 4 bits
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// 06f9: 34 10 00 LXI HL,$0010 ; lookup table runs fe, fd, fb, f7, ef, df, bf, 7f
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// ; inverse of 0x0008
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// 06fc: ac LDAX (HL+A) ; look up the table based on the note
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hl = 0x10;
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a = bitMask[hl + a];
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// 06fd: 1b MOV C,A ; fetch value, store in C
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// 06fe: 34 40 ff LXI HL,$FF40 ; table in RAM
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// 0701: ad LDAX (HL+B) ; $FF40 + upper four bits as offset
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// 0702: 60 8b ANA A,C ; mask off the bit for the note
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// 0704: bd STAX (HL+B) ; store at $FF40 + offset
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c = a;
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hl = 0x40;
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a = ram[hl + b];
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a &= c;
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ram[hl + b] = a;
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return;
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// jump back to set up for running status
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// 0705: ee JR $06F4
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h0706:
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// ; add or subtract an octave to bring out-of-range notes in
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// 0706: 46 0c ADI A,$0C ; add 12 to note value in A
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// 0708: 4f c2 JRE $06CC ; jump back and test if it's in range yet
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a += 12; // semitones
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goto h06cc; // test again
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h070a:
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// 070a: 66 0c SUI A,$0C ; subtract 12 from note value in A
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// 070c: 4f c2 JRE $06D0 ; jump back and test if it's in range yet
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a -= 12; // semitones
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goto h06d0;
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// ; store first value
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// 070e: 63 3e STAW $003E
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// 0710: 4f 3a JRE $064C ; return from interrupt
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//
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// ; control change?
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// 0712: 01 3e LDAW $003E ; parameter?
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// 0714: 27 7a GTI A,$7A ; all notes off, or higher?
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// 0716: 4e 35 JRE $074D
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// 0718: 45 4f 40 ONIW $004F,$40 ; flag variable
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// 071b: 4f d7 JRE $06F4
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// 071d: 67 7b NEI A,$7B ; all notes off?
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// 071f: 4e 51 JRE $0772
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// 0721: 47 02 ONI A,$02 ; mono/poly (but ignored according to the manual)
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// 0723: c8 JR $072C
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// 0724: 05 4f fd ANIW $004F,$FD ; flag variable
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// 0727: 47 01 ONI A,$01 ; omni on
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// 0729: 4e 4d JRE $0778 ; set omni off
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// 072b: c8 JR $0734
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// 072c: 05 4f fe ANIW $004F,$FE ; clear flag variable bit 0
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// 072f: 47 01 ONI A,$01 ; if mono on?
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// 0731: 15 4f 01 ORIW $004F,$01 ; set flag variable?
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// 0734: 69 03 MVI A,$03
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// 0736: 74 88 4f ANAW $004F
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// 0739: 15 4f 20 ORIW $004F,$20
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// 073c: 77 01 EQI A,$01
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// 073e: 05 4f df ANIW $004F,$DF
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// 0741: 6a 0d MVI B,$0D ; 14 values
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// 0743: 69 00 MVI A,$00 ; zero out note flags
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// 0745: 34 40 ff LXI HL,$FF40 ; table in RAM for note flags
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// 0748: 3d STAX (HL+) ; store
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// 0749: 52 DCR B
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// 074a: fd JR $0748 ; loop
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// 074b: 4f a7 JRE $06F4 ; expect two bytes
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// 074d: 77 40 EQI A,$40 ; sustain
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// 074f: ce JR $075E
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// 0750: 74 6b 00 NEI C,$00 ; value is zero
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// 0753: c5 JR $0759
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// 0754: 15 b6 10 ORIW $00B6,$10 ; sustain on
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// 0757: 4f 9b JRE $06F4
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// 0759: 15 b6 08 ORIW $00B6,$08 ; sustain off
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// 075c: 4f 96 JRE $06F4
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// 075e: 77 01 EQI A,$01 ; mod wheel
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// 0760: 4f 92 JRE $06F4 ; expect two bytes and return (running status)
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// 0762: 55 a8 20 OFFIW $00A8,$20 ; midi mode 0
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// 0765: c7 JR $076D ; continue
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// 0766: 0b MOV A,C ; get byte
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// 0767: 17 80 ORI A,$80 ; set bit?
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// 0769: 63 a2 STAW $00A2 ; mod wheel value?
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// 076b: 4f 87 JRE $06F4 ; expect two bytes and return (running status)
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// 076d: 71 a2 80 MVIW $00A2,$80 ; mod wheel off?
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// 0770: 4f 82 JRE $06F4 ; expect two bytes and return
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//
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// ; handle all notes off
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// 0772: 5d 4f BIT 5,$004F ; all notes off?
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// 0774: 4f 7e JRE $06F4 ; expect two bytes and return
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// 0776: 4f c9 JRE $0741 ; wipe a table
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// 0778: 74 7b 01 EQI C,$01
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// 077b: 15 4f 02 ORIW $004F,$02
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// 077e: 4f b4 JRE $0734
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//
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// ; program change
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// 0780: 55 a8 20 OFFIW $00A8,$20 ; Midi mode 0?
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// 0783: c5 JR $0789 ; skip ahead and do nothing
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// 0784: 0b MOV A,C ; get prog
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// 0785: 17 80 ORI A,$80 ; bit 7
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// 0787: 63 a3 STAW $00A3 ; store
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// 0789: 71 3f 00 MVIW $003F,$00 ; expect one byte (running status)
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// 078c: 54 4c 06 JMP $064C ; return
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//
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// ; bend
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// 078f: 55 a8 20 OFFIW $00A8,$20 ; midi mode 0?
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// 0792: d7 JR $07AA ; clear and end
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// 0793: 0b MOV A,C
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// 0794: 18 MOV EAH,A ; EAH gets msb
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// 0795: 01 3e LDAW $003E ; lsb
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// 0797: 48 25 SLL A ; multiply by two
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// 0799: 19 MOV EAL,A ; EA contains 14-bit bend multiplied by 2
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// 079a: 48 a4 DSLL EA ; left aligned
|
||||
// 079c: 08 MOV A,EAH
|
||||
// 079d: 47 80 ONI A,$80 ; negative?
|
||||
// 079f: c4 JR $07A4
|
||||
// 07a0: 63 a1 STAW $00A1 ; save in ffa1
|
||||
// 07a2: 4f 50 JRE $06F4 ; return, two byte running status
|
||||
// 07a4: 16 ff XRI A,$FF ; invert
|
||||
// 07a6: 63 a0 STAW $00A0 ; save in ffa0
|
||||
// 07a8: 4f 4a JRE $06F4 ; return, two byte running status
|
||||
// 07aa: 71 a1 80 MVIW $00A1,$80 ; reset bend?
|
||||
// 07ad: 4f 45 JRE $06F4 ; return, two byte running status
|
||||
}
|
||||
// ; handle TX interrupt
|
||||
// 07af: 01 c1 LDAW $00C1 ; buffer pointers?
|
||||
// 07b1: 74 f8 c2 EQAW $00C2
|
||||
@ -1901,12 +1961,12 @@ void Assigner::resetVoices() {
|
||||
b = 5; // five voices
|
||||
// 0b86: 69 80 MVI A,$80
|
||||
a = 0x80;
|
||||
// 0b88: 3d STAX (HL+)
|
||||
h0b88:
|
||||
// 0b88: 3d STAX (HL+)
|
||||
h0b88:
|
||||
ram[hl++] = a;
|
||||
// 0b89: 52 DCR B
|
||||
// 0b8a: fd JR $0B88
|
||||
if (b>0) {
|
||||
if (b > 0) {
|
||||
b--;
|
||||
goto h0b88;
|
||||
}
|
||||
@ -1916,14 +1976,14 @@ void Assigner::resetVoices() {
|
||||
b = 0x05;
|
||||
// 0b90: 69 88 MVI A,$88
|
||||
a = 0x88;
|
||||
// 0b92: 3d STAX (HL+)
|
||||
h0b92:
|
||||
// 0b92: 3d STAX (HL+)
|
||||
h0b92:
|
||||
ram[hl++] = a;
|
||||
// 0b93: 41 INR A
|
||||
a++;
|
||||
// 0b94: 52 DCR B
|
||||
// 0b95: fc JR $0B92
|
||||
if (b>0) {
|
||||
if (b > 0) {
|
||||
b--;
|
||||
goto h0b92;
|
||||
}
|
||||
|
||||
@ -71,14 +71,16 @@ void Chassis::noteOn(uint8_t note) {
|
||||
|
||||
ic1.ram[0x4e] = 0x90;
|
||||
ic1.ram[0x3e] = note;
|
||||
ic1.noteOn();
|
||||
ic1.noteOn(0x40);
|
||||
|
||||
/*
|
||||
#ifdef D_MIDIBITMAP
|
||||
printf("note on -> ");
|
||||
for (uint8_t i = 0x40; i < 0x4f; i++) {
|
||||
printf("%02x ", ic1.ram[i]);
|
||||
}
|
||||
printf("\n");
|
||||
*/
|
||||
#endif
|
||||
|
||||
s.keyon = true;
|
||||
for (i = 0; i < NUM_VOICES; i++) {
|
||||
vPtr++;
|
||||
@ -98,16 +100,18 @@ void Chassis::noteOn(uint8_t note) {
|
||||
}
|
||||
|
||||
void Chassis::noteOff(uint8_t note) {
|
||||
ic1.ram[0x4e] = 0x80;
|
||||
ic1.ram[0x4e] = 0x90;
|
||||
ic1.ram[0x3e] = note;
|
||||
ic1.noteOn();
|
||||
ic1.noteOn(0);
|
||||
|
||||
/*
|
||||
#ifdef D_MIDIBITMAP
|
||||
printf("note off -> ");
|
||||
for (uint8_t i = 0x40; i < 0x4f; i++) {
|
||||
printf("%02x ", ic1.ram[i]);
|
||||
}
|
||||
printf("\n");
|
||||
*/
|
||||
#endif
|
||||
|
||||
s.keyon = false;
|
||||
for (uint32_t i = 0; i < NUM_VOICES; i++) {
|
||||
if (s.voice[i].note == note && !s.voice[i].isFree()) {
|
||||
@ -133,7 +137,7 @@ void Chassis::doMidi(const MidiEvent *ev, uint32_t count, uint32_t timeLimit) {
|
||||
}
|
||||
lastEvent = i;
|
||||
|
||||
ic1.voiceOn();
|
||||
//ic1.voiceOn();
|
||||
}
|
||||
|
||||
void Chassis::run(const float **, float **outputs, uint32_t frames, const MidiEvent *midiEvents, uint32_t midiEventCount) {
|
||||
|
||||
@ -2,16 +2,23 @@
|
||||
|
||||
#include <cstdint>
|
||||
|
||||
#define D_MIDIBITMAP
|
||||
|
||||
class Assigner {
|
||||
public:
|
||||
uint8_t ram[256];
|
||||
uint16_t a = 0, b = 0, c = 0, eal = 0, eah = 0;
|
||||
uint32_t bc, de, hl, ea = 0;
|
||||
|
||||
void noteOn();
|
||||
void noteOn(uint8_t c);
|
||||
void voiceOn();
|
||||
void resetVoices();
|
||||
// void clearNotes();
|
||||
//void assignNote();
|
||||
// void clearNotes();
|
||||
// void assignNote();
|
||||
|
||||
private:
|
||||
uint8_t bitMask[24] = {
|
||||
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
||||
0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80,
|
||||
0xfe, 0xfd, 0xfb, 0xf7, 0xef, 0xdf, 0xbf, 0x7f};
|
||||
};
|
||||
Loading…
Reference in New Issue
Block a user