mirror of https://github.com/wwarthen/RomWBW.git
Wayne Warthen
4 years ago
committed by
GitHub
GitHub
29 changed files with 550 additions and 6 deletions
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@ -0,0 +1,472 @@ |
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; SN76489 + AY-3-8910 + YM2162 VGM player for CP/M |
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; |
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; Based on VGM player by J.B. Langston |
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; https://github.com/jblang/SN76489 |
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; |
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; Enhanced with multi-chip support by Marco Maccaferri |
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; |
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; YM2162/YM3484, GD3 support added by Phil Summers |
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; |
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; Compile with: |
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; |
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; TASM -80 -b VGMPLAY.ASM VGMPLAY.COM |
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|
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P8X180 .EQU 0 ; System configuration |
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RC2014 .EQU 0 |
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SBCECB .EQU 1 |
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.IF P8X180 |
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RSEL .EQU 82H ; Primary AY-3-8910 Register selection |
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RDAT .EQU 83H ; Primary AY-3-8910 Register data |
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RSEL2 .EQU 88H ; Secondary AY-3-8910 Register selection |
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RDAT2 .EQU 89H ; Secondary AY-3-8910 Register data |
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PSGREG .EQU 84H ; Primary SN76489 |
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PSG2REG .EQU 8AH ; Secondary SN76489 |
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FRAME_DLY .EQU 48 ; Frame delay (~ 1/44100) |
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.ENDIF |
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|
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.IF RC2014 |
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RSEL .EQU 0D8H ; Primary AY-3-8910 Register selection |
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RDAT .EQU 0D0H ; Primary AY-3-8910 Register data |
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RSEL2 .EQU 0A0H ; Secondary AY-3-8910 Register selection |
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RDAT2 .EQU 0A1H ; Secondary AY-3-8910 Register data |
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PSGREG .EQU 0FFH ; Primary SN76489 |
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PSG2REG .EQU 0FBH ; Secondary SN76489 |
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FRAME_DLY .EQU 15 ; Frame delay (~ 1/44100) |
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.ENDIF |
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.IF SBCECB |
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RSEL .EQU 0D8H ; Primary AY-3-8910 Register selection |
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RDAT .EQU 0D0H ; Primary AY-3-8910 Register data |
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RSEL2 .EQU 0A0H ; Secondary AY-3-8910 Register selection |
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RDAT2 .EQU 0A1H ; Secondary AY-3-8910 Register data |
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YMSEL .EQU 0C0H ; 11000000 a1=0 a0=0 |
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YMDAT .EQU 0C1H ; 11000001 a1=0 a0=1 |
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YM2SEL .EQU 0C2H ; 11000010 a1=1 a0=0 |
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YM2DAT .EQU 0C3H ; 11000011 a1=1 a0=1 |
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PSGREG .EQU 0C6H ; Primary SN76489 |
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PSG2REG .EQU 0C7H ; Secondary SN76489 |
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FRAME_DLY .EQU 10 ; Frame delay (~ 1/44100) |
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#DEFINE SBCV2004 |
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HB_RTCVAL .EQU 0FFEEH |
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RTCIO .EQU 070H |
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.ENDIF |
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#DEFINE setreg(reg,val) \ |
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#DEFCONT \ ld a,reg |
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#DEFCONT \ out (YMSEL),a |
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#DEFCONT \ nop |
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#DEFCONT \ nop |
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#DEFCONT \ ld a,val |
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#DEFCONT \ out (YMDAT),a |
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D50 .EQU 500 ; 900 ;735 |
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D60 .EQU 600 ; 1000 ;882 |
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VGM_GG_W .EQU 04FH ; GAME GEAR PSG STEREO. WRITE DD TO PORT 0X06 |
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VGM_PSG_W .EQU 050H ; PSG (SN76489/SN76496) WRITE VALUE DD |
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VGM_YM2612_W .EQU 052H ; YM2612 WRITE VALUE DD |
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VGM_WNS .EQU 061H ; WAIT N SAMPLES |
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VGM_W735 .EQU 062H ; WAIT 735 SAMPLES (1/60TH SECOND) |
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VGM_W882 .EQU 063H ; WAIT 882 SAMPLES (1/50TH SECOND) |
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VGM_ESD .EQU 066H ; END OF SOUND DATA |
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BOOT .EQU 0000H ; boot location |
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BDOS .EQU 0005H ; bdos entry point |
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FCB .EQU 005CH ; file control block |
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FCBCR .EQU FCB + 20H ; fcb current record |
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BUFF .EQU 0080H ; DMA buffer |
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PRINTF .EQU 9 ; BDOS print string function |
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OPENF .EQU 15 ; BDOS open file function |
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CLOSEF .EQU 16 ; BDOS close file function |
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READF .EQU 20 ; BDOS sequential read function |
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CR .EQU 0DH ; carriage return |
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LF .EQU 0AH ; line feed |
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EOS .EQU '$' ; end of string marker |
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.ORG 100H |
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LD (OLDSTACK),SP ; save old stack pointer |
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LD SP,STACK ; set new stack pointer |
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LD DE,MSG_WELC ; Welcome Message |
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CALL PRTSTR |
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LD C,OPENF |
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LD DE,FCB |
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CALL BDOS |
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INC A |
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JP Z, ERR |
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XOR A ; Read VGM file into memory |
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LD (FCBCR), A |
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LD DE, VGMDATA |
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LD (VGMPOS), DE |
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RLOOP LD C, READF |
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LD DE, FCB |
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CALL BDOS |
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OR A |
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JR NZ, RDONE |
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LD HL, BUFF |
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LD DE, (VGMPOS) |
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LD BC, 128 |
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LDIR |
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LD (VGMPOS), DE |
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JR RLOOP |
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RDONE LD C, CLOSEF ; Close the file |
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LD DE, FCB |
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CALL BDOS |
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LD DE,MSG_BADF ; Check valid file |
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LD HL,VGMDATA |
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LD A,(HL) |
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CP 'V' |
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JP NZ,EXIT_ERR |
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INC HL |
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LD A,(HL) |
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CP 'g' |
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JP NZ,EXIT_ERR |
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INC HL |
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LD A,(HL) |
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CP 'm' |
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JP NZ,EXIT_ERR |
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INC HL |
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LD A,(HL) |
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CP ' ' |
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JP NZ,EXIT_ERR |
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LD HL,VGMDATA+08H ; Get version in DE:HL |
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LD E,(HL) |
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INC HL |
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LD D,(HL) |
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INC HL |
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LD B,(HL) |
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INC HL |
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LD C,(HL) |
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EX DE,HL |
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PUSH BC |
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POP DE |
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; CALL PRTHEX32 |
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LD HL,(VGMDATA+16H) ; Is GD3 in range? |
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LD A,H |
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OR L |
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JR NZ,SKIP_GD3 |
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LD HL,(VGMDATA+14H) ; Is there a GD3 header |
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LD DE,VGMDATA+14H |
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ADD HL,DE |
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LD A,(HL) |
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CP 'G' |
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JR NZ,SKIP_GD3 |
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INC HL |
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LD A,(HL) |
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CP 'd' |
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JR NZ,SKIP_GD3 |
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INC HL |
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LD A,(HL) |
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CP '3' |
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JR NZ,SKIP_GD3 |
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INC HL |
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LD A,(HL) |
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CP ' ' |
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JR NZ,SKIP_GD3 |
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LD DE,0009H ; Skip version and size |
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ADD HL,DE |
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CALL CRLF |
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GD3_NXT: LD A,(HL) ; Print English Track |
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OR A |
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INC HL |
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INC HL |
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JR Z,GD3_NXT1 |
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CALL PRTCHR |
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JR GD3_NXT |
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GD3_NXT1: LD A,(HL) ; Skip Japanese Track |
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OR A |
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INC HL |
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INC HL |
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JR NZ,GD3_NXT1 |
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; JR GD3_NXT1 |
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CALL CRLF |
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GD3_NXT2: LD A,(HL) ; Print English Title |
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OR A |
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INC HL |
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INC HL |
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JR Z,GD3_NXT3 |
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CALL PRTCHR |
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JR GD3_NXT2 |
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GD3_NXT3: CALL CRLF |
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SKIP_GD3: LD HL, (VGMDATA + 34H) ; Determine start of VGM |
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LD A, H ; data. |
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OR L |
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JR NZ, _S1 |
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LD HL, 000CH ; Default location (40H - 34H) |
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_S1 LD DE, VGMDATA + 34H |
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ADD HL, DE |
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LD (VGMPOS), HL |
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LD HL,D60 ; VGM delay (60hz) |
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LD (VGMDLY), HL |
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MAINLOOP CALL PLAY ; Play one frame |
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LD C,6 ; Check for keypress |
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LD E,0FFH |
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CALL BDOS |
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OR A |
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JR NZ,EXIT |
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LD HL,(VGMDLY) ; Frame delay |
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L1 LD B,FRAME_DLY |
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DJNZ $ |
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DEC HL |
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LD A,H |
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OR L |
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JR NZ,L1 |
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JR MAINLOOP |
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EXIT |
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#IFDEF SBCV2004 |
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CALL FASTIO |
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#ENDIF |
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LD A, 9FH ; Mute all channels on psg |
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OUT (PSGREG), A |
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OUT (PSG2REG), A |
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LD A, 0BFH |
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OUT (PSGREG), A |
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OUT (PSG2REG), A |
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LD A, 0DFH |
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OUT (PSGREG), A |
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OUT (PSG2REG), A |
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LD A, 0FFH |
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OUT (PSGREG), A |
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OUT (PSG2REG), A |
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LD A, 8 ; Mute all channels on ay |
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OUT (RSEL), A |
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OUT (RSEL2), A |
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XOR A |
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OUT (RDAT), A |
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OUT (RDAT2), A |
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LD A, 9 |
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OUT (RSEL), A |
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OUT (RSEL2), A |
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XOR A |
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OUT (RDAT), A |
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OUT (RDAT2), A |
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LD A, 10 |
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OUT (RSEL), A |
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OUT (RSEL2), A |
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XOR A |
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OUT (RDAT), A |
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OUT (RDAT2), A |
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CALL FASTIO |
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setreg($22,$00) ; lfo off |
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setreg($27,$00) ; note off ch 0 |
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setreg($28,$01) ; note off ch 1 |
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setreg($28,$02) ; note off ch 2 |
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setreg($28,$03) ; note off ch 3 |
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setreg($28,$04) ; note off ch 4 |
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setreg($28,$05) ; note off ch 5 |
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setreg($28,$06) ; note off ch 6 |
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setreg($28,$01) ; note off ch 1 |
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setreg($2b,$00) ; dac off |
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setreg($28,$00) ; key off |
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LD DE,MSG_EXIT |
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EXIT_ERR: CALL PRTSTR |
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LD SP, (OLDSTACK) |
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RST 00H |
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ERR LD C, PRINTF |
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LD DE, NOFILE |
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CALL BDOS |
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RST 00H |
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NOFILE .DB "File not found", CR, LF, EOS |
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MSG_EXIT .DB "FINISHED.",CR,LF,0 |
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;------------------------------------------------------------------------------ |
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; VGM Player. |
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;------------------------------------------------------------------------------ |
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PLAY |
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#IFDEF SBCV2004 |
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CALL SLOWIO |
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#ENDIF |
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LD HL, (VGMPOS) ; Start processing VGM commands |
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NEXT LD A, (HL) |
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INC HL |
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LD (VGMPOS), HL |
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CP VGM_ESD ; Restart VGM cmd |
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JR NZ, NEXT1 |
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LD HL, (VGMDATA + 1CH) ; Loop offset |
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LD A, H |
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OR L |
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JP Z, EXIT |
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LD DE, VGMDATA + 1CH |
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ADD HL, DE |
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LD (VGMPOS), HL |
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JR NEXT |
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NEXT1 CP VGM_GG_W ; Game Gear SN76489 stereo. Ignored |
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JR NZ, PSG |
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INC HL |
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JR NEXT |
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PSG CP VGM_PSG_W ; Write byte to SN76489. |
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JR NZ, PSG2 |
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LD A, (HL) |
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INC HL |
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OUT (PSGREG), A |
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JR NEXT |
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PSG2 CP 30H ; Write byte to second SN76489. |
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JR NZ, AY |
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LD A, (HL) |
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INC HL |
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OUT (PSG2REG), A |
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JR NEXT |
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; AY SECTION |
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AY CP 0A0H |
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JR NZ,YM |
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LD A, (HL) |
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INC HL |
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BIT 7, A ; Bit 7=1 for second AY-3-8910 |
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JR Z, AY1 |
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AND 7FH |
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OUT (RSEL2), A |
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LD A, (HL) |
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INC HL |
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OUT (RDAT2), A |
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JR NEXT |
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AY1 OUT (RSEL), A |
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LD A, (HL) |
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INC HL |
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OUT (RDAT), A |
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JR NEXT |
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; YM SECTION |
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YM: CP 052H |
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JR NZ, YM2 |
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LD A,(HL) |
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OUT (YMSEL),A |
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INC HL |
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LD A,(HL) |
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OUT (YMDAT),A |
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INC HL |
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JR NEXT |
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YM2: CP 053H |
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JR NZ, PCM |
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LD A,(HL) |
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OUT (YM2SEL),A |
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INC HL |
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LD A,(HL) |
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OUT (YM2DAT),A |
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INC HL |
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JP NEXT |
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PCM: |
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WAITNN CP 61H ; Wait nn samples |
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JR NZ, WAIT60 |
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LD A, (HL) |
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INC HL |
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LD D, (HL) |
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INC HL |
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LD (VGMPOS), HL |
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LD L, A |
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LD H, D |
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LD (VGMDLY), HL |
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RET |
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WAIT60 CP VGM_W735 ; Wait 735 samples (60Hz) |
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JR NZ, WAIT50 |
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LD (VGMPOS), HL |
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LD HL, D50 |
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LD (VGMDLY), HL |
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RET |
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WAIT50 CP VGM_W882 ; Wait 882 samples (50Hz) |
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JR NZ, WAIT1 |
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LD (VGMPOS), HL |
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LD HL, D60 |
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LD (VGMDLY), HL |
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RET |
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WAIT1 CP 70H ; WAIT 0-15 SAMPLES |
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JR C, UNK ; CODES 70-7FH |
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CP 80H |
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JP NC, UNK |
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SUB 6FH |
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LD L, A |
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LD H, 0 |
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LD (VGMDLY), HL |
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RET |
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UNK: CALL PRTDOT |
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CALL PRTHEX |
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JP NEXT |
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SLOWIO: |
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#IFDEF SBCV2004 |
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PUSH AF |
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LD A,(HB_RTCVAL) |
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OR %00001000 ; SBC-V2-004+ CHANGE |
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OUT (RTCIO),A ; TO HALF CLOCK SPEED |
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POP AF |
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#ENDIF |
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RET |
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FASTIO: |
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#IFDEF SBCV2004 |
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LD A,(HB_RTCVAL) |
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AND %11110111 ; SBC-V2-004+ CHANGE TO |
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OUT (RTCIO),A ; NORMAL CLOCK SPEED |
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#ENDIF |
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RET |
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#INCLUDE "printing.inc" |
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MSG_WELC: .DB "VGM Player for RomWBW v0.1, 8-Nov-2021",CR,LF |
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; .DB "J.B. Langston/Marco Maccaferri/Phil Summers",CR,LF |
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.DB 0 |
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MSG_BADF: .DB "Not a VGM file",CR,LF,0 |
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;------------------------------------------------------------------------------ |
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; Variables |
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;------------------------------------------------------------------------------ |
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VGMPOS .DW 0 |
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VGMDLY .DW 0 |
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OLDSTACK .DW 0 ; original stack pointer |
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.DS 40H ; space for stack |
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STACK ; top of stack |
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;------------------------------------------------------------------------------ |
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; VGM data |
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;------------------------------------------------------------------------------ |
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VGMDATA |
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.END |
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@ -0,0 +1,43 @@ |
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VGM Player for Z80 |
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================== |
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|
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Simple player for VGM (Video Game Music) files. |
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Usage: |
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VGMPLAY MUSIC.VGM |
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Default Ports: |
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D8H-D0H - First AY-3-8910 (RSEL/RDAT) |
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A0H-A1H - Second AY-3-8910 |
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FFH - First SN76489 |
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FBH - Second SN76489 |
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C6H-C7H - YM2612/YM3484 |
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|
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If your system uses different ports you need to recompile the source. |
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|
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Note: The player should be compatible with VGM files up to version 1.51 |
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but there are very few controls (if any) in the code, be sure to have |
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a good VGM file that doesn't contain much extra data. These files can be |
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very big, the player is limited to the available TPA space which is |
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typically around 54-55k, bigger files will overwrite the CP/M code and/or |
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wrap around the 64k limit. |
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|
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The played is designed to run on a standard RC2014 with a 7.3728 MHz clock, |
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if your system uses a different clock you need to adjust the frame delay accordingly. |
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Example Music Files |
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=================== |
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|
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LEMMIN01.VGM - SN76489 - Lemmings: Title Screen |
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PENGUI03.VGM - AY-3-8910 - Penguin Adventure: Forest Path |
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PITFAL02.VGM - 2xSN76489 - Pitfall II: Scene 1 |
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TIGER02.VGM - 2xAY-3-8910 - Tiger Hely: First Mission |
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WONDER01.VGM - 2xSN76489 - Wonder Boy in Monster Land |
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FILTHY01.VGM - YM3484 - Columns : Filthy |
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ITSGAMOV.VGM - YM3484+SN76489 - Puyo Puyo Tsuu : It's Game Over! |
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|
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Original Source by J.B Langston, Marco Maccaferri |
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ROMWBW + YM2612/YM3484 version by Phil Summers |
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