Fixed comments, added entry points for 2 config routines, disable interrupts during critical section
This commit is contained in:
Eric Rangell
Eric Rangell
parent
51b5f9c62a
commit
74d501f889
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@ -1,14 +1,14 @@
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Modules list:
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-------------
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main.o:
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CODE Offs = 000000 Size = 0001A8
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CODE Offs = 000000 Size = 0001B5
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Segment list:
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-------------
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Name Start End Size
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--------------------------------------------
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CODE 009000 0091A7 0001A8
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CODE 009000 0091B4 0001B5
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Exports list:
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@ -16,6 +16,8 @@ Current file: main.s
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000000r 1 ; THROUGH THE APPLE ANNUNCIATOR 0 OUTPUT PORT OF THE GAME CONNECTOR
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000000r 1 ; USING 32 CYCLES PER BIT TO ACHIEVE A 31.25K MIDI BAUD RATE.
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000000r 1 ;
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000000r 1 ; //GS USERS NEED TO RUN THIS PROGRAM IN NORMAL SPEED MODE
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000000r 1 ;
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000000r 1 ; THE OUTPUT IS INITIALIZED TO A HIGH LOGIC VOLTAGE. WHEN IT GOES
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000000r 1 ; LOW FOR 32 MICROSECONDS, THAT INDICATES THE START BIT OF A MIDI BYTE.
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000000r 1 ; THEN 8 BYTES OF DATA ARE TRANSMITTED, FOLLOWED BY A HIGH STOP BIT.
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@ -32,11 +34,13 @@ Current file: main.s
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000000r 1 ; TRANSMITTED, AND A POINTER IN $CE,CF (LO,HI) WITH THE ADDRESS OF
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000000r 1 ; THE DATA BYTES, THEN CALLS THE ENTRY POINT "SENDMSG" TO TRANSMIT
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000000r 1 ; THE MESSAGE.
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000000r 1 ; $900B = SEND A TEST MESSAGE - C MAJOR CHORD NOTE ONS
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000000r 1 ; $900E = SEND A TEST MESSAGE - C MAJOR CHORD NOTE OFFS
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000000r 1 ; $9011 = RESERVED
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000000r 1 ; $9014 = RESERVED
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000000r 1 ; $9017 = RESERVED
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000000r 1 ; $900B = TURN ALL NOTES OFF
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000000r 1 ; $900E = SEND A TEST MESSAGE - C MAJOR CHORD NOTE ONS
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000000r 1 ; $9011 = SEND A TEST MESSAGE - C MAJOR CHORD NOTE OFFS
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000000r 1 ; $9014 = CHANGE ANNUNCIATOR - MODIFIES CODE TO USE DIFFERENT ANNUNCIATOR
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000000r 1 ; $9017 = ANNUNCIATOR TO USE: 0-3 - only looks at least significant 2 bits
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000000r 1 ; $9018 = CHANGE LOGIC - BIT 7
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000000r 1 ; $901B = SET BIT 7 TO USE NEGATIVE LOGIC
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000000r 1 ;-------------------------------------------------------------------------
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000000r 1 ; Enhancements for 2018:
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000000r 1 ; 1. Disable interrupts during critical timing sections, preserve interrupt status
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@ -74,231 +78,242 @@ Current file: main.s
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000011r 1 TEST2:
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000011r 1 4C rr rr JMP TESTMSG2 ;SEND TEST MESSAGE 2 - C MAJOR CHORD OFF
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000014r 1 ;
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000014r 1 ;RSRVD1:
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000014r 1 ;JMP INIT
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000014r 1 ;RSRVD2:
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000014r 1 ;JMP INIT
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000014r 1 ;RSRVD3:
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000014r 1 ;JMP INIT
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000014r 1 ;---------------------------------------------------------------------------
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000014r 1 00 SAVENBYT: .byte $00 ;SAVE AREA FOR NUMBYTES
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000015r 1 00 TEMPA: .byte $00
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000016r 1 00 TEMPX: .byte $00
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000017r 1 ;ANNPAIR: .byte $00 ; ANNUNCIATOR NUMBER TIMES 2 (1=C05A, 2=C05C, 3=C05E)
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000017r 1 ;---------------------------------------------------------------------------
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000017r 1 INIT:
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000017r 1 2C 59 C0 BIT AN0ON
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00001Ar 1 60 RTS
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00001Br 1 ;---------------------------------------------------------------------------
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00001Br 1 XMITMSG:
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00001Br 1 A5 D7 LDA NUMBYTES ;SAVE NUMBER OF BYTES
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00001Dr 1 8D rr rr STA SAVENBYT ;BECAUSE WE WILL CLOBBER IT
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000020r 1 A0 00 LDY #$00 ;Y WILL BE AN INDEX INTO THE DATA AREA
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000022r 1 XMITLOOP:
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000022r 1 B1 CE LDA (DATAPTR),Y ;GET A DATA BYTE
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000024r 1 20 rr rr JSR XMITONE
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000027r 1 C8 INY ;POINT TO NEXT BYTE
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000028r 1 C6 D7 DEC NUMBYTES ;DECREMENT COUNTER
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00002Ar 1 A5 D7 LDA NUMBYTES ;CHECK IF ZERO
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00002Cr 1 D0 F4 BNE XMITLOOP ;LOOP UNTIL DONE SENDING ALL BYTES
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00002Er 1 AD rr rr LDA SAVENBYT
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000031r 1 85 D7 STA NUMBYTES ;RESTORE ORIGINAL VALUE OF NUMBYTES
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000033r 1 60 RTS
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000034r 1 ;---------------------------------------------------------------------------
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000034r 1 XMITONE:
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000034r 1 8D rr rr STA TEMPA ;SAVE A AND X REGISTERS
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000037r 1 8E rr rr STX TEMPX
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00003Ar 1 ;
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00003Ar 1 0A ASL A ;SHIFT BIT INTO CARRY
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00003Br 1 AA TAX ;SAVE CURRENT IMAGE OF DATA BYTE
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00003Cr 1 A9 00 LDA #$00 ;ZERO OUT ACCUMULATOR FOR ADD
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00003Er 1 69 58 ADC #<AN0OFF ;ADD CARRY TO ANNUNCIATOR ADDRESS
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000040r 1 8D rr rr STA BIT7+1 ;MODIFY THE XMITBITS SUBROUTINE
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000043r 1 8A TXA ;RESTORE ACCUMULATOR
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000044r 1 ;
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000044r 1 0A ASL A ;SHIFT BIT INTO CARRY
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000045r 1 AA TAX ;SAVE CURRENT IMAGE OF DATA BYTE
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000046r 1 A9 00 LDA #$00 ;ZERO OUT ACCUMULATOR FOR ADD
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000048r 1 69 58 ADC #<AN0OFF ;ADD CARRY TO ANNUNCIATOR ADDRESS
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00004Ar 1 8D rr rr STA BIT6+1 ;MODIFY THE XMITBITS SUBROUTINE
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00004Dr 1 8A TXA ;RESTORE ACCUMULATOR
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00004Er 1 ;
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00004Er 1 0A ASL A ;SHIFT BIT INTO CARRY
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00004Fr 1 AA TAX ;SAVE CURRENT IMAGE OF DATA BYTE
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000050r 1 A9 00 LDA #$00 ;ZERO OUT ACCUMULATOR FOR ADD
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000052r 1 69 58 ADC #<AN0OFF ;ADD CARRY TO ANNUNCIATOR ADDRESS
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000054r 1 8D rr rr STA BIT5+1 ;MODIFY THE XMITBITS SUBROUTINE
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000057r 1 8A TXA ;RESTORE ACCUMULATOR
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000058r 1 ;
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000058r 1 0A ASL A ;SHIFT BIT INTO CARRY
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000059r 1 AA TAX ;SAVE CURRENT IMAGE OF DATA BYTE
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00005Ar 1 A9 00 LDA #$00 ;ZERO OUT ACCUMULATOR FOR ADD
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00005Cr 1 69 58 ADC #<AN0OFF ;ADD CARRY TO ANNUNCIATOR ADDRESS
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00005Er 1 8D rr rr STA BIT4+1 ;MODIFY THE XMITBITS SUBROUTINE
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000061r 1 8A TXA ;RESTORE ACCUMULATOR
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000062r 1 ;
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000062r 1 0A ASL A ;SHIFT BIT INTO CARRY
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000063r 1 AA TAX ;SAVE CURRENT IMAGE OF DATA BYTE
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000064r 1 A9 00 LDA #$00 ;ZERO OUT ACCUMULATOR FOR ADD
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000066r 1 69 58 ADC #<AN0OFF ;ADD CARRY TO ANNUNCIATOR ADDRESS
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000068r 1 8D rr rr STA BIT3+1 ;MODIFY THE XMITBITS SUBROUTINE
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00006Br 1 8A TXA ;RESTORE ACCUMULATOR
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00006Cr 1 ;
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00006Cr 1 0A ASL A ;SHIFT BIT INTO CARRY
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00006Dr 1 AA TAX ;SAVE CURRENT IMAGE OF DATA BYTE
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00006Er 1 A9 00 LDA #$00 ;ZERO OUT ACCUMULATOR FOR ADD
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000070r 1 69 58 ADC #<AN0OFF ;ADD CARRY TO ANNUNCIATOR ADDRESS
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000072r 1 8D rr rr STA BIT2+1 ;MODIFY THE XMITBITS SUBROUTINE
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000075r 1 8A TXA ;RESTORE ACCUMULATOR
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000076r 1 ;
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000076r 1 0A ASL A ;SHIFT BIT INTO CARRY
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000077r 1 AA TAX ;SAVE CURRENT IMAGE OF DATA BYTE
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000078r 1 A9 00 LDA #$00 ;ZERO OUT ACCUMULATOR FOR ADD
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00007Ar 1 69 58 ADC #<AN0OFF ;ADD CARRY TO ANNUNCIATOR ADDRESS
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00007Cr 1 8D rr rr STA BIT1+1 ;MODIFY THE XMITBITS SUBROUTINE
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00007Fr 1 8A TXA ;RESTORE ACCUMULATOR
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000080r 1 ;
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000080r 1 0A ASL A ;SHIFT BIT INTO CARRY
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000081r 1 AA TAX ;SAVE CURRENT IMAGE OF DATA BYTE
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000082r 1 A9 00 LDA #$00 ;ZERO OUT ACCUMULATOR FOR ADD
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000084r 1 69 58 ADC #<AN0OFF ;ADD CARRY TO ANNUNCIATOR ADDRESS
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000086r 1 8D rr rr STA BIT0+1 ;MODIFY THE XMITBITS SUBROUTINE
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000089r 1 8A TXA ;RESTORE ACCUMULATOR
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00008Ar 1 ;
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00008Ar 1 20 rr rr JSR XMITBITS ;SEND THE BYTE OUT
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00008Dr 1 AE rr rr LDX TEMPX
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000090r 1 AD rr rr LDA TEMPA ;RESTORE X AND A
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000093r 1 60 RTS
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000094r 1 ;-----------------------------------------------------------------------
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000094r 1 XMITBITS:
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000094r 1 2C 58 C0 BIT AN0OFF ;4 CYCLES - TRANSMIT START BIT - ALWAYS LOW
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000097r 1 20 rr rr JSR DELAY22 ;6+22
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00009Ar 1 BIT0:
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00009Ar 1 2C 58 C0 BIT AN0OFF ;4
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00009Dr 1 20 rr rr JSR DELAY22 ;6+22
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0000A0r 1 BIT1:
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0000A0r 1 2C 58 C0 BIT AN0OFF ;4
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0000A3r 1 20 rr rr JSR DELAY22 ;6+22
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0000A6r 1 BIT2:
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0000A6r 1 2C 58 C0 BIT AN0OFF ;4
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0000A9r 1 20 rr rr JSR DELAY22 ;6+22
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0000ACr 1 BIT3:
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0000ACr 1 2C 58 C0 BIT AN0OFF ;4
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0000AFr 1 20 rr rr JSR DELAY22 ;6+22
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0000B2r 1 BIT4:
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0000B2r 1 2C 58 C0 BIT AN0OFF ;4
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0000B5r 1 20 rr rr JSR DELAY22 ;6+22
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0000B8r 1 BIT5:
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0000B8r 1 2C 58 C0 BIT AN0OFF ;4
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0000BBr 1 20 rr rr JSR DELAY22 ;6+22
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0000BEr 1 BIT6:
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0000BEr 1 2C 58 C0 BIT AN0OFF ;4
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0000C1r 1 20 rr rr JSR DELAY22 ;6+22
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0000C4r 1 BIT7:
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0000C4r 1 2C 58 C0 BIT AN0OFF ;4
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0000C7r 1 20 rr rr JSR DELAY22 ;6+22
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0000CAr 1 2C 59 C0 BIT AN0ON ;4 ;TRANSMIT STOP BIT - ALWAYS HIGH
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0000CDr 1 20 rr rr JSR DELAY22 ;6+22
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0000D0r 1 60 RTS
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0000D1r 1 ;-----------------------------------------------------------------------
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0000D1r 1 DELAY22:
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0000D1r 1 EA NOP ;WAIT 22 CYCLES
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0000D2r 1 EA NOP
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0000D3r 1 EA NOP
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0000D4r 1 EA NOP
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0000D5r 1 EA NOP
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0000D6r 1 EA NOP
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0000D7r 1 EA NOP
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0000D8r 1 EA NOP
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0000D9r 1 60 RTS
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0000DAr 1 ;-----------------------------------------------------------------------
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0000DAr 1 TESTMSG1:
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0000DAr 1 A9 07 LDA #7
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0000DCr 1 85 D7 STA NUMBYTES
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0000DEr 1 A9 rr LDA #<TESTDAT1
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0000E0r 1 85 CE STA DATAPTR
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0000E2r 1 A9 rr LDA #>TESTDAT1
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0000E4r 1 85 CF STA DATAPTR+1
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0000E6r 1 20 rr rr JSR SENDMSG
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0000E9r 1 60 RTS
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0000EAr 1 ;-----------------------------------------------------------------------
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0000EAr 1 TESTMSG2:
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0000EAr 1 A9 07 LDA #7
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0000ECr 1 85 D7 STA NUMBYTES
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0000EEr 1 A9 rr LDA #<TESTDAT2
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0000F0r 1 85 CE STA DATAPTR
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0000F2r 1 A9 rr LDA #>TESTDAT2
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0000F4r 1 85 CF STA DATAPTR+1
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0000F6r 1 20 rr rr JSR SENDMSG
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0000F9r 1 60 RTS
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0000FAr 1 ;-----------------------------------------------------------------------
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0000FAr 1 QUIET:
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0000FAr 1 A9 90 LDA #$90
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0000FCr 1 85 D7 STA NUMBYTES
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0000FEr 1 A9 rr LDA #<QUIETMSG
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000100r 1 85 CE STA DATAPTR
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000102r 1 A9 rr LDA #>QUIETMSG
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000104r 1 85 CF STA DATAPTR+1
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000106r 1 20 rr rr JSR SENDMSG
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000109r 1 60 RTS
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00010Ar 1 ;-----------------------------------------------------------------------
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00010Ar 1 TESTDAT1:
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00010Ar 1 90 3C 40 40 .byte $90,$3C,$40,$40,$40,$43,$40
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00010Er 1 40 43 40
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000111r 1 TESTDAT2:
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000111r 1 90 3C 00 40 .byte $90,$3C,$00,$40,$00,$43,$00
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000115r 1 00 43 00
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000118r 1 QUIETMSG:
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000118r 1 B0 78 00 B0 .byte $B0,$78,$00,$B0,$79,$00,$B0,$7B,$00
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00011Cr 1 79 00 B0 7B
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000120r 1 00
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000121r 1 B1 78 00 B1 .byte $B1,$78,$00,$B1,$79,$00,$B1,$7B,$00
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000125r 1 79 00 B1 7B
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000129r 1 00
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00012Ar 1 B2 78 00 B2 .byte $B2,$78,$00,$B2,$79,$00,$B2,$7B,$00
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00012Er 1 79 00 B2 7B
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000132r 1 00
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000133r 1 B3 78 00 B3 .byte $B3,$78,$00,$B3,$79,$00,$B3,$7B,$00
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000137r 1 79 00 B3 7B
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00013Br 1 00
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00013Cr 1 B4 78 00 B4 .byte $B4,$78,$00,$B4,$79,$00,$B4,$7B,$00
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000140r 1 79 00 B4 7B
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000144r 1 00
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000145r 1 B5 78 00 B5 .byte $B5,$78,$00,$B5,$79,$00,$B5,$7B,$00
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000149r 1 79 00 B5 7B
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00014Dr 1 00
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00014Er 1 B6 78 00 B6 .byte $B6,$78,$00,$B6,$79,$00,$B6,$7B,$00
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000152r 1 79 00 B6 7B
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000156r 1 00
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000157r 1 B7 78 00 B7 .byte $B7,$78,$00,$B7,$79,$00,$B7,$7B,$00
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00015Br 1 79 00 B7 7B
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00015Fr 1 00
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000160r 1 B8 78 00 B8 .byte $B8,$78,$00,$B8,$79,$00,$B8,$7B,$00
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000164r 1 79 00 B8 7B
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000168r 1 00
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000169r 1 B9 78 00 B9 .byte $B9,$78,$00,$B9,$79,$00,$B9,$7B,$00
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00016Dr 1 79 00 B9 7B
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000171r 1 00
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000172r 1 BA 78 00 BA .byte $BA,$78,$00,$BA,$79,$00,$BA,$7B,$00
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000176r 1 79 00 BA 7B
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00017Ar 1 00
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00017Br 1 BB 78 00 BB .byte $BB,$78,$00,$BB,$79,$00,$BB,$7B,$00
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00017Fr 1 79 00 BB 7B
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000183r 1 00
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000184r 1 BC 78 00 BC .byte $BC,$78,$00,$BC,$79,$00,$BC,$7B,$00
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000188r 1 79 00 BC 7B
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00018Cr 1 00
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00018Dr 1 BD 78 00 BD .byte $BD,$78,$00,$BD,$79,$00,$BD,$7B,$00
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000191r 1 79 00 BD 7B
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000195r 1 00
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000196r 1 BE 78 00 BE .byte $BE,$78,$00,$BE,$79,$00,$BE,$7B,$00
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00019Ar 1 79 00 BE 7B
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00019Er 1 00
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00019Fr 1 BF 78 00 BF .byte $BF,$78,$00,$BF,$79,$00,$BF,$7B,$00
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0001A3r 1 79 00 BF 7B
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0001A7r 1 00
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0001A8r 1 ;----------------
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0001A8r 1 ; END OF PROGRAM
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0001A8r 1 ;----------------
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0001A8r 1 .endproc
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0001A8r 1
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000014r 1 CHNGANNC:
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000014r 1 4C rr rr JMP CHGANNC ;RECONFIGURE PROGRAM TO USE ANNUNCIATOR NUMBER IN NEXT BYTE
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000017r 1 ANNC2USE:
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000017r 1 00 .byte $00 ;ONLY LEAST SIGNIFICANT 2 BITS ARE USED
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000018r 1 CHNGLOGC:
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000018r 1 4C rr rr JMP CHGLOGIC ;RECONFIGURE PROGRAM TO USE POSITIVE OR NEGATIVE LOGIC
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00001Br 1 LOGICBYT:
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00001Br 1 00 .byte $00 ;SET HIGH BIT TO 1 TO USE NEGATIVE LOGIC, ELSE POSITIVE LOGIC (DEFAULT)
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00001Cr 1 ;---------------------------------------------------------------------------
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00001Cr 1 00 SAVENBYT: .byte $00 ;SAVE AREA FOR NUMBYTES
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00001Dr 1 00 TEMPA: .byte $00
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00001Er 1 00 TEMPX: .byte $00
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00001Fr 1 ;ANNPAIR: .byte $00 ; ANNUNCIATOR NUMBER TIMES 2 (1=C05A, 2=C05C, 3=C05E)
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00001Fr 1 ;---------------------------------------------------------------------------
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00001Fr 1 INIT:
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00001Fr 1 2C 59 C0 BIT AN0ON
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000022r 1 60 RTS
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000023r 1 ;---------------------------------------------------------------------------
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000023r 1 XMITMSG:
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000023r 1 A5 D7 LDA NUMBYTES ;SAVE NUMBER OF BYTES
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000025r 1 8D rr rr STA SAVENBYT ;BECAUSE WE WILL CLOBBER IT
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000028r 1 A0 00 LDY #$00 ;Y WILL BE AN INDEX INTO THE DATA AREA
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00002Ar 1 XMITLOOP:
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00002Ar 1 B1 CE LDA (DATAPTR),Y ;GET A DATA BYTE
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00002Cr 1 20 rr rr JSR XMITONE
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00002Fr 1 C8 INY ;POINT TO NEXT BYTE
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000030r 1 C6 D7 DEC NUMBYTES ;DECREMENT COUNTER
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000032r 1 A5 D7 LDA NUMBYTES ;CHECK IF ZERO
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000034r 1 D0 F4 BNE XMITLOOP ;LOOP UNTIL DONE SENDING ALL BYTES
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000036r 1 AD rr rr LDA SAVENBYT
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000039r 1 85 D7 STA NUMBYTES ;RESTORE ORIGINAL VALUE OF NUMBYTES
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00003Br 1 60 RTS
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00003Cr 1 ;---------------------------------------------------------------------------
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00003Cr 1 XMITONE:
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00003Cr 1 8D rr rr STA TEMPA ;SAVE A AND X REGISTERS
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00003Fr 1 8E rr rr STX TEMPX
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000042r 1 ;
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000042r 1 0A ASL A ;SHIFT BIT INTO CARRY
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000043r 1 AA TAX ;SAVE CURRENT IMAGE OF DATA BYTE
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000044r 1 A9 00 LDA #$00 ;ZERO OUT ACCUMULATOR FOR ADD
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000046r 1 69 58 ADC #<AN0OFF ;ADD CARRY TO ANNUNCIATOR ADDRESS
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000048r 1 8D rr rr STA BIT7+1 ;MODIFY THE XMITBITS SUBROUTINE
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00004Br 1 8A TXA ;RESTORE ACCUMULATOR
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00004Cr 1 ;
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00004Cr 1 0A ASL A ;SHIFT BIT INTO CARRY
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00004Dr 1 AA TAX ;SAVE CURRENT IMAGE OF DATA BYTE
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00004Er 1 A9 00 LDA #$00 ;ZERO OUT ACCUMULATOR FOR ADD
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000050r 1 69 58 ADC #<AN0OFF ;ADD CARRY TO ANNUNCIATOR ADDRESS
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000052r 1 8D rr rr STA BIT6+1 ;MODIFY THE XMITBITS SUBROUTINE
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000055r 1 8A TXA ;RESTORE ACCUMULATOR
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000056r 1 ;
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000056r 1 0A ASL A ;SHIFT BIT INTO CARRY
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000057r 1 AA TAX ;SAVE CURRENT IMAGE OF DATA BYTE
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000058r 1 A9 00 LDA #$00 ;ZERO OUT ACCUMULATOR FOR ADD
|
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00005Ar 1 69 58 ADC #<AN0OFF ;ADD CARRY TO ANNUNCIATOR ADDRESS
|
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00005Cr 1 8D rr rr STA BIT5+1 ;MODIFY THE XMITBITS SUBROUTINE
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00005Fr 1 8A TXA ;RESTORE ACCUMULATOR
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000060r 1 ;
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000060r 1 0A ASL A ;SHIFT BIT INTO CARRY
|
||||
000061r 1 AA TAX ;SAVE CURRENT IMAGE OF DATA BYTE
|
||||
000062r 1 A9 00 LDA #$00 ;ZERO OUT ACCUMULATOR FOR ADD
|
||||
000064r 1 69 58 ADC #<AN0OFF ;ADD CARRY TO ANNUNCIATOR ADDRESS
|
||||
000066r 1 8D rr rr STA BIT4+1 ;MODIFY THE XMITBITS SUBROUTINE
|
||||
000069r 1 8A TXA ;RESTORE ACCUMULATOR
|
||||
00006Ar 1 ;
|
||||
00006Ar 1 0A ASL A ;SHIFT BIT INTO CARRY
|
||||
00006Br 1 AA TAX ;SAVE CURRENT IMAGE OF DATA BYTE
|
||||
00006Cr 1 A9 00 LDA #$00 ;ZERO OUT ACCUMULATOR FOR ADD
|
||||
00006Er 1 69 58 ADC #<AN0OFF ;ADD CARRY TO ANNUNCIATOR ADDRESS
|
||||
000070r 1 8D rr rr STA BIT3+1 ;MODIFY THE XMITBITS SUBROUTINE
|
||||
000073r 1 8A TXA ;RESTORE ACCUMULATOR
|
||||
000074r 1 ;
|
||||
000074r 1 0A ASL A ;SHIFT BIT INTO CARRY
|
||||
000075r 1 AA TAX ;SAVE CURRENT IMAGE OF DATA BYTE
|
||||
000076r 1 A9 00 LDA #$00 ;ZERO OUT ACCUMULATOR FOR ADD
|
||||
000078r 1 69 58 ADC #<AN0OFF ;ADD CARRY TO ANNUNCIATOR ADDRESS
|
||||
00007Ar 1 8D rr rr STA BIT2+1 ;MODIFY THE XMITBITS SUBROUTINE
|
||||
00007Dr 1 8A TXA ;RESTORE ACCUMULATOR
|
||||
00007Er 1 ;
|
||||
00007Er 1 0A ASL A ;SHIFT BIT INTO CARRY
|
||||
00007Fr 1 AA TAX ;SAVE CURRENT IMAGE OF DATA BYTE
|
||||
000080r 1 A9 00 LDA #$00 ;ZERO OUT ACCUMULATOR FOR ADD
|
||||
000082r 1 69 58 ADC #<AN0OFF ;ADD CARRY TO ANNUNCIATOR ADDRESS
|
||||
000084r 1 8D rr rr STA BIT1+1 ;MODIFY THE XMITBITS SUBROUTINE
|
||||
000087r 1 8A TXA ;RESTORE ACCUMULATOR
|
||||
000088r 1 ;
|
||||
000088r 1 0A ASL A ;SHIFT BIT INTO CARRY
|
||||
000089r 1 AA TAX ;SAVE CURRENT IMAGE OF DATA BYTE
|
||||
00008Ar 1 A9 00 LDA #$00 ;ZERO OUT ACCUMULATOR FOR ADD
|
||||
00008Cr 1 69 58 ADC #<AN0OFF ;ADD CARRY TO ANNUNCIATOR ADDRESS
|
||||
00008Er 1 8D rr rr STA BIT0+1 ;MODIFY THE XMITBITS SUBROUTINE
|
||||
000091r 1 8A TXA ;RESTORE ACCUMULATOR
|
||||
000092r 1 ;
|
||||
000092r 1 20 rr rr JSR XMITBITS ;SEND THE BYTE OUT
|
||||
000095r 1 AE rr rr LDX TEMPX
|
||||
000098r 1 AD rr rr LDA TEMPA ;RESTORE X AND A
|
||||
00009Br 1 60 RTS
|
||||
00009Cr 1 ;-----------------------------------------------------------------------
|
||||
00009Cr 1 XMITBITS:
|
||||
00009Cr 1 08 PHP ;SAVE CURRENT INTERRUPT STATUS
|
||||
00009Dr 1 78 SEI ;MASK INTERRUPTS DURING CRITICAL TIMING SECTION
|
||||
00009Er 1 2C 58 C0 BIT AN0OFF ;4 CYCLES - TRANSMIT START BIT - ALWAYS LOW
|
||||
0000A1r 1 20 rr rr JSR DELAY22 ;6+22
|
||||
0000A4r 1 BIT0:
|
||||
0000A4r 1 2C 58 C0 BIT AN0OFF ;4
|
||||
0000A7r 1 20 rr rr JSR DELAY22 ;6+22
|
||||
0000AAr 1 BIT1:
|
||||
0000AAr 1 2C 58 C0 BIT AN0OFF ;4
|
||||
0000ADr 1 20 rr rr JSR DELAY22 ;6+22
|
||||
0000B0r 1 BIT2:
|
||||
0000B0r 1 2C 58 C0 BIT AN0OFF ;4
|
||||
0000B3r 1 20 rr rr JSR DELAY22 ;6+22
|
||||
0000B6r 1 BIT3:
|
||||
0000B6r 1 2C 58 C0 BIT AN0OFF ;4
|
||||
0000B9r 1 20 rr rr JSR DELAY22 ;6+22
|
||||
0000BCr 1 BIT4:
|
||||
0000BCr 1 2C 58 C0 BIT AN0OFF ;4
|
||||
0000BFr 1 20 rr rr JSR DELAY22 ;6+22
|
||||
0000C2r 1 BIT5:
|
||||
0000C2r 1 2C 58 C0 BIT AN0OFF ;4
|
||||
0000C5r 1 20 rr rr JSR DELAY22 ;6+22
|
||||
0000C8r 1 BIT6:
|
||||
0000C8r 1 2C 58 C0 BIT AN0OFF ;4
|
||||
0000CBr 1 20 rr rr JSR DELAY22 ;6+22
|
||||
0000CEr 1 BIT7:
|
||||
0000CEr 1 2C 58 C0 BIT AN0OFF ;4
|
||||
0000D1r 1 20 rr rr JSR DELAY22 ;6+22
|
||||
0000D4r 1 2C 59 C0 BIT AN0ON ;4 ;TRANSMIT STOP BIT - ALWAYS HIGH
|
||||
0000D7r 1 20 rr rr JSR DELAY22 ;6+22
|
||||
0000DAr 1 28 PLP ;RESTORE SAVED INTERRUPT STATUS
|
||||
0000DBr 1 60 RTS
|
||||
0000DCr 1 ;-----------------------------------------------------------------------
|
||||
0000DCr 1 DELAY22:
|
||||
0000DCr 1 EA NOP ;WAIT 22 CYCLES
|
||||
0000DDr 1 EA NOP
|
||||
0000DEr 1 EA NOP
|
||||
0000DFr 1 EA NOP
|
||||
0000E0r 1 EA NOP
|
||||
0000E1r 1 EA NOP
|
||||
0000E2r 1 EA NOP
|
||||
0000E3r 1 EA NOP
|
||||
0000E4r 1 60 RTS
|
||||
0000E5r 1 ;-----------------------------------------------------------------------
|
||||
0000E5r 1 TESTMSG1:
|
||||
0000E5r 1 A9 07 LDA #7
|
||||
0000E7r 1 85 D7 STA NUMBYTES
|
||||
0000E9r 1 A9 rr LDA #<TESTDAT1
|
||||
0000EBr 1 85 CE STA DATAPTR
|
||||
0000EDr 1 A9 rr LDA #>TESTDAT1
|
||||
0000EFr 1 85 CF STA DATAPTR+1
|
||||
0000F1r 1 20 rr rr JSR SENDMSG
|
||||
0000F4r 1 60 RTS
|
||||
0000F5r 1 ;-----------------------------------------------------------------------
|
||||
0000F5r 1 TESTMSG2:
|
||||
0000F5r 1 A9 07 LDA #7
|
||||
0000F7r 1 85 D7 STA NUMBYTES
|
||||
0000F9r 1 A9 rr LDA #<TESTDAT2
|
||||
0000FBr 1 85 CE STA DATAPTR
|
||||
0000FDr 1 A9 rr LDA #>TESTDAT2
|
||||
0000FFr 1 85 CF STA DATAPTR+1
|
||||
000101r 1 20 rr rr JSR SENDMSG
|
||||
000104r 1 60 RTS
|
||||
000105r 1 ;-----------------------------------------------------------------------
|
||||
000105r 1 QUIET:
|
||||
000105r 1 A9 90 LDA #$90
|
||||
000107r 1 85 D7 STA NUMBYTES
|
||||
000109r 1 A9 rr LDA #<QUIETMSG
|
||||
00010Br 1 85 CE STA DATAPTR
|
||||
00010Dr 1 A9 rr LDA #>QUIETMSG
|
||||
00010Fr 1 85 CF STA DATAPTR+1
|
||||
000111r 1 20 rr rr JSR SENDMSG
|
||||
000114r 1 60 RTS
|
||||
000115r 1 ;-----------------------------------------------------------------------
|
||||
000115r 1 CHGANNC:
|
||||
000115r 1 60 RTS
|
||||
000116r 1 ;-----------------------------------------------------------------------
|
||||
000116r 1 CHGLOGIC:
|
||||
000116r 1 60 RTS
|
||||
000117r 1 ;-----------------------------------------------------------------------
|
||||
000117r 1 TESTDAT1:
|
||||
000117r 1 90 3C 40 40 .byte $90,$3C,$40,$40,$40,$43,$40
|
||||
00011Br 1 40 43 40
|
||||
00011Er 1 TESTDAT2:
|
||||
00011Er 1 90 3C 00 40 .byte $90,$3C,$00,$40,$00,$43,$00
|
||||
000122r 1 00 43 00
|
||||
000125r 1 QUIETMSG:
|
||||
000125r 1 B0 78 00 B0 .byte $B0,$78,$00,$B0,$79,$00,$B0,$7B,$00
|
||||
000129r 1 79 00 B0 7B
|
||||
00012Dr 1 00
|
||||
00012Er 1 B1 78 00 B1 .byte $B1,$78,$00,$B1,$79,$00,$B1,$7B,$00
|
||||
000132r 1 79 00 B1 7B
|
||||
000136r 1 00
|
||||
000137r 1 B2 78 00 B2 .byte $B2,$78,$00,$B2,$79,$00,$B2,$7B,$00
|
||||
00013Br 1 79 00 B2 7B
|
||||
00013Fr 1 00
|
||||
000140r 1 B3 78 00 B3 .byte $B3,$78,$00,$B3,$79,$00,$B3,$7B,$00
|
||||
000144r 1 79 00 B3 7B
|
||||
000148r 1 00
|
||||
000149r 1 B4 78 00 B4 .byte $B4,$78,$00,$B4,$79,$00,$B4,$7B,$00
|
||||
00014Dr 1 79 00 B4 7B
|
||||
000151r 1 00
|
||||
000152r 1 B5 78 00 B5 .byte $B5,$78,$00,$B5,$79,$00,$B5,$7B,$00
|
||||
000156r 1 79 00 B5 7B
|
||||
00015Ar 1 00
|
||||
00015Br 1 B6 78 00 B6 .byte $B6,$78,$00,$B6,$79,$00,$B6,$7B,$00
|
||||
00015Fr 1 79 00 B6 7B
|
||||
000163r 1 00
|
||||
000164r 1 B7 78 00 B7 .byte $B7,$78,$00,$B7,$79,$00,$B7,$7B,$00
|
||||
000168r 1 79 00 B7 7B
|
||||
00016Cr 1 00
|
||||
00016Dr 1 B8 78 00 B8 .byte $B8,$78,$00,$B8,$79,$00,$B8,$7B,$00
|
||||
000171r 1 79 00 B8 7B
|
||||
000175r 1 00
|
||||
000176r 1 B9 78 00 B9 .byte $B9,$78,$00,$B9,$79,$00,$B9,$7B,$00
|
||||
00017Ar 1 79 00 B9 7B
|
||||
00017Er 1 00
|
||||
00017Fr 1 BA 78 00 BA .byte $BA,$78,$00,$BA,$79,$00,$BA,$7B,$00
|
||||
000183r 1 79 00 BA 7B
|
||||
000187r 1 00
|
||||
000188r 1 BB 78 00 BB .byte $BB,$78,$00,$BB,$79,$00,$BB,$7B,$00
|
||||
00018Cr 1 79 00 BB 7B
|
||||
000190r 1 00
|
||||
000191r 1 BC 78 00 BC .byte $BC,$78,$00,$BC,$79,$00,$BC,$7B,$00
|
||||
000195r 1 79 00 BC 7B
|
||||
000199r 1 00
|
||||
00019Ar 1 BD 78 00 BD .byte $BD,$78,$00,$BD,$79,$00,$BD,$7B,$00
|
||||
00019Er 1 79 00 BD 7B
|
||||
0001A2r 1 00
|
||||
0001A3r 1 BE 78 00 BE .byte $BE,$78,$00,$BE,$79,$00,$BE,$7B,$00
|
||||
0001A7r 1 79 00 BE 7B
|
||||
0001ABr 1 00
|
||||
0001ACr 1 BF 78 00 BF .byte $BF,$78,$00,$BF,$79,$00,$BF,$7B,$00
|
||||
0001B0r 1 79 00 BF 7B
|
||||
0001B4r 1 00
|
||||
0001B5r 1 ;----------------
|
||||
0001B5r 1 ; END OF PROGRAM
|
||||
0001B5r 1 ;----------------
|
||||
0001B5r 1 .endproc
|
||||
0001B5r 1
|
||||
|
|
|
|||
Binary file not shown.
|
|
@ -12,6 +12,8 @@
|
|||
; THROUGH THE APPLE ANNUNCIATOR 0 OUTPUT PORT OF THE GAME CONNECTOR
|
||||
; USING 32 CYCLES PER BIT TO ACHIEVE A 31.25K MIDI BAUD RATE.
|
||||
;
|
||||
; //GS USERS NEED TO RUN THIS PROGRAM IN NORMAL SPEED MODE
|
||||
;
|
||||
; THE OUTPUT IS INITIALIZED TO A HIGH LOGIC VOLTAGE. WHEN IT GOES
|
||||
; LOW FOR 32 MICROSECONDS, THAT INDICATES THE START BIT OF A MIDI BYTE.
|
||||
; THEN 8 BYTES OF DATA ARE TRANSMITTED, FOLLOWED BY A HIGH STOP BIT.
|
||||
|
|
@ -28,11 +30,13 @@
|
|||
; TRANSMITTED, AND A POINTER IN $CE,CF (LO,HI) WITH THE ADDRESS OF
|
||||
; THE DATA BYTES, THEN CALLS THE ENTRY POINT "SENDMSG" TO TRANSMIT
|
||||
; THE MESSAGE.
|
||||
; $900B = SEND A TEST MESSAGE - C MAJOR CHORD NOTE ONS
|
||||
; $900E = SEND A TEST MESSAGE - C MAJOR CHORD NOTE OFFS
|
||||
; $9011 = RESERVED
|
||||
; $9014 = RESERVED
|
||||
; $9017 = RESERVED
|
||||
; $900B = TURN ALL NOTES OFF
|
||||
; $900E = SEND A TEST MESSAGE - C MAJOR CHORD NOTE ONS
|
||||
; $9011 = SEND A TEST MESSAGE - C MAJOR CHORD NOTE OFFS
|
||||
; $9014 = CHANGE ANNUNCIATOR - MODIFIES CODE TO USE DIFFERENT ANNUNCIATOR
|
||||
; $9017 = ANNUNCIATOR TO USE: 0-3 - only looks at least significant 2 bits
|
||||
; $9018 = CHANGE LOGIC - BIT 7
|
||||
; $901B = SET BIT 7 TO USE NEGATIVE LOGIC
|
||||
;-------------------------------------------------------------------------
|
||||
; Enhancements for 2018:
|
||||
; 1. Disable interrupts during critical timing sections, preserve interrupt status
|
||||
|
|
@ -70,12 +74,14 @@ TEST1:
|
|||
TEST2:
|
||||
JMP TESTMSG2 ;SEND TEST MESSAGE 2 - C MAJOR CHORD OFF
|
||||
;
|
||||
;RSRVD1:
|
||||
;JMP INIT
|
||||
;RSRVD2:
|
||||
;JMP INIT
|
||||
;RSRVD3:
|
||||
;JMP INIT
|
||||
CHNGANNC:
|
||||
JMP CHGANNC ;RECONFIGURE PROGRAM TO USE ANNUNCIATOR NUMBER IN NEXT BYTE
|
||||
ANNC2USE:
|
||||
.byte $00 ;ONLY LEAST SIGNIFICANT 2 BITS ARE USED
|
||||
CHNGLOGC:
|
||||
JMP CHGLOGIC ;RECONFIGURE PROGRAM TO USE POSITIVE OR NEGATIVE LOGIC
|
||||
LOGICBYT:
|
||||
.byte $00 ;SET HIGH BIT TO 1 TO USE NEGATIVE LOGIC, ELSE POSITIVE LOGIC (DEFAULT)
|
||||
;---------------------------------------------------------------------------
|
||||
SAVENBYT: .byte $00 ;SAVE AREA FOR NUMBYTES
|
||||
TEMPA: .byte $00
|
||||
|
|
@ -167,6 +173,8 @@ XMITONE:
|
|||
RTS
|
||||
;-----------------------------------------------------------------------
|
||||
XMITBITS:
|
||||
PHP ;SAVE CURRENT INTERRUPT STATUS
|
||||
SEI ;MASK INTERRUPTS DURING CRITICAL TIMING SECTION
|
||||
BIT AN0OFF ;4 CYCLES - TRANSMIT START BIT - ALWAYS LOW
|
||||
JSR DELAY22 ;6+22
|
||||
BIT0:
|
||||
|
|
@ -195,6 +203,7 @@ BIT7:
|
|||
JSR DELAY22 ;6+22
|
||||
BIT AN0ON ;4 ;TRANSMIT STOP BIT - ALWAYS HIGH
|
||||
JSR DELAY22 ;6+22
|
||||
PLP ;RESTORE SAVED INTERRUPT STATUS
|
||||
RTS
|
||||
;-----------------------------------------------------------------------
|
||||
DELAY22:
|
||||
|
|
@ -238,6 +247,12 @@ QUIET:
|
|||
JSR SENDMSG
|
||||
RTS
|
||||
;-----------------------------------------------------------------------
|
||||
CHGANNC:
|
||||
RTS
|
||||
;-----------------------------------------------------------------------
|
||||
CHGLOGIC:
|
||||
RTS
|
||||
;-----------------------------------------------------------------------
|
||||
TESTDAT1:
|
||||
.byte $90,$3C,$40,$40,$40,$43,$40
|
||||
TESTDAT2:
|
||||
|
|
|
|||
Binary file not shown.
Loading…
Reference in New Issue