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https://github.com/cybernesto/electric-mock.git
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c390792a03
- electricduet.asm is the original source code published by Paul Lutus. - PLAYER.ED.S is a commented source in french written by Deckard - MOCKINGDUET.S is an ED player for a Mockingboard installed on Slot 4. - CRICKETDUET.S is an ED player for an Apple //c with a Cricket! from Street Electronics.
129 lines
5.4 KiB
NASM
129 lines
5.4 KiB
NASM
/***************************************************************************
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* Copyright (C) 1979-2015 by Paul Lutus *
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* http://arachnoid.com/administration *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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/* Electric Duet Player Routine circa 1980 */
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$0900> A9 01: LDA #$01 ; 2 *!*
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$0902> 85 09: STA $09 ; 3
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$0904> 85 1D: STA $1D ; 3
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$0906> 48: PHA ; 3
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$0907> 48: PHA ; 3
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$0908> 48: PHA ; 3
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$0909> D0 15: BNE $0920 ; 4 *!*
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$090B> C8: INY ; 2
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$090C> B1 1E: LDA ($1E),Y ; 5 *!*
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$090E> 85 09: STA $09 ; 3
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$0910> C8: INY ; 2
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$0911> B1 1E: LDA ($1E),Y ; 5 *!*
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$0913> 85 1D: STA $1D ; 3
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$0915> A5 1E: LDA $1E ; 3 *!*
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$0917> 18: CLC ; 2
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$0918> 69 03: ADC #$03 ; 2 *!*
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$091A> 85 1E: STA $1E ; 3
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$091C> 90 02: BCC $0920 ; 4 *!*
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$091E> E6 1F: INC $1F ; 5
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$0920> A0 00: LDY #$00 ; 2 *!*
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$0922> B1 1E: LDA ($1E),Y ; 5 *!*
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$0924> C9 01: CMP #$01 ; 2
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$0926> F0 E3: BEQ $090B ; 4 *!*
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$0928> B0 0D: BCS $0937 ; 4 *!*
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$092A> 68: PLA ; 4
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$092B> 68: PLA ; 4
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$092C> 68: PLA ; 4
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$092D> A2 49: LDX #$49 ; 2 *!*
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$092F> C8: INY ; 2
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$0930> B1 1E: LDA ($1E),Y ; 5 *!*
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$0932> D0 02: BNE $0936 ; 4 *!*
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$0934> A2 C9: LDX #$c9 ; 2 *!*
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$0936> 60: RTS ; 6
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$0937> 85 08: STA $08 ; 3
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$0939> 20 2D09: JSR $092D ; 6
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$093C> 8E 8309: STX $0983 ; 4
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$093F> 85 06: STA $06 ; 3
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$0941> A6 09: LDX $09 ; 3 *!*
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$0943> 4A: LSR A ; 2
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$0944> CA: DEX ; 2
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$0945> D0 FC: BNE $0943 ; 4 *!*
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$0947> 8D 7C09: STA $097C ; 4
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$094A> 20 2D09: JSR $092D ; 6
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$094D> 8E BB09: STX $09BB ; 4
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$0950> 85 07: STA $07 ; 3
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$0952> A6 1D: LDX $1D ; 3 *!*
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$0954> 4A: LSR A ; 2
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$0955> CA: DEX ; 2
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$0956> D0 FC: BNE $0954 ; 4 *!*
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$0958> 8D B409: STA $09B4 ; 4
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$095B> 68: PLA ; 4
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$095C> A8: TAY ; 2
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$095D> 68: PLA ; 4
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$095E> AA: TAX ; 2
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$095F> 68: PLA ; 4
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$0960> D0 03: BNE $0965 ; 4 *!*
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$0962> 2C 30C0: BIT $C030 ; 4
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$0965> C9 00: CMP #$00 ; 2
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$0967> 30 03: BMI $096C ; 4 *!*
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$0969> EA: NOP ; 2
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$096A> 10 03: BPL $096F ; 4 *!*
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$096C> 2C 30C0: BIT $C030 ; 4
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$096F> 85 4E: STA $4E ; 3
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$0971> 2C 00C0: BIT $C000 ; 4
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$0974> 30 C0: BMI $0936 ; 4 *!*
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$0976> 88: DEY ; 2
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$0977> D0 02: BNE $097B ; 4 *!*
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$0979> F0 06: BEQ $0981 ; 4 *!*
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$097B> C0 00: CPY #$00 ; 2
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$097D> F0 04: BEQ $0983 ; 4 *!*
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$097F> D0 04: BNE $0985 ; 4 *!*
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$0981> A4 06: LDY $06 ; 3 *!*
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$0983> 49 40: EOR #$40 ; 2 *!*
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$0985> 24 4E: BIT $4E ; 3
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$0987> 50 07: BVC $0990 ; 4 *!*
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$0989> 70 00: BVS $098B ; 4 *!*
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$098B> 10 09: BPL $0996 ; 4 *!*
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$098D> EA: NOP ; 2
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$098E> 30 09: BMI $0999 ; 4 *!*
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$0990> EA: NOP ; 2
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$0991> 30 03: BMI $0996 ; 4 *!*
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$0993> EA: NOP ; 2
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$0994> 10 03: BPL $0999 ; 4 *!*
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$0996> CD 30C0: CMP $C030 ; 4
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$0999> C6 4F: DEC $4F ; 5
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$099B> D0 11: BNE $09AE ; 4 *!*
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$099D> C6 08: DEC $08 ; 5
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$099F> D0 0D: BNE $09AE ; 4 *!*
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$09A1> 50 03: BVC $09A6 ; 4 *!*
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$09A3> 2C 30C0: BIT $C030 ; 4
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$09A6> 48: PHA ; 3
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$09A7> 8A: TXA ; 2
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$09A8> 48: PHA ; 3
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$09A9> 98: TYA ; 2
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$09AA> 48: PHA ; 3
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$09AB> 4C 1509: JMP $0915 ; 3
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$09AE> CA: DEX ; 2
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$09AF> D0 02: BNE $09B3 ; 4 *!*
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$09B1> F0 06: BEQ $09B9 ; 4 *!*
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$09B3> E0 00: CPX #$00 ; 2
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$09B5> F0 04: BEQ $09BB ; 4 *!*
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$09B7> D0 04: BNE $09BD ; 4 *!*
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$09B9> A6 07: LDX $07 ; 3 *!*
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$09BB> 49 80: EOR #$80 ; 2 *!*
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$09BD> 70 A3: BVS $0962 ; 4 *!*
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$09BF> EA: NOP ; 2
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$09C0> 50 A3: BVC $0965 ; 4 *!* |