Atari USB analog Joystick Driver#

Tested with a Logitec Attack 3 analog Joystick. Other analog Joysticks might work. Please send feedback.

Generic VBI Driver#

Will work with Atari Basic, Turbo Basic, ACTION!, XFORTH.

Compatibility Mode#

Load driver and use Stick(0) and Strig(0) as normal.

Signals from original Joystick in Port A will overwrite USB Joystick compatibility mode.

USB Analog Joystick Mode#

Label Mem Values
USBHORZ $0270 horizontal values (127-0 left move, 128 = no move, 129-255 right move)
USBVERT $0271 vertical values (127-0 up move, 128 = no move, 129-255 down move)
USBTRIG0 $0272 Buttons 1-8 (each bit, bit set = Button pressed)
USBTRIG1 $0273 Buttons 9-10 (each bit, bit set = Button pressed)
USBTHRUS $0274 Thrust (0-255)

Source Code (BiboAssembler)#


01000          .LI OFF
01010 ****************************
01020 ** 6502 USB DEVELOPMENT   **
01030 ** (C) 2004 BY ABBUC      **
01040 ** REGIONALGRUPPE FFM     **
01050 ** ANALOG JOYSTICK DRIVER **
01060 ** FOR USB SL811HS        **
01070 ** VERSION 1.0 20041114   **
01080 ** LICENSED UNDER THE     **
01090 ** GNU PUBLIC LICENSE     **
01100 ** (GPL) VERS. 2 OR LATER **
01110 **                        **
01120 ****************************
01130 ;
01140          .OR $3500
01150          .OF "D:USBJOYST.COM"
01160 ;
01170 ; SL811 MEMORY ADDRESSES
01180 ; CHANGE ACCORDING TO YOUR
01190 ; CONFIGURATION
01200 USBSEL   = $D500
01210 USBDTA   = $D501
01220 ;
01230 ; USB REGISTER SL811
01240 ;
01250 CTL      = $00 ; USBA HOST CTL
01260 BUFADR   = $01 ; BUFFER ADDRESS
01270 BUFLEN   = $02 ; BUFFER LEN
01280 PIDEP    = $03 ; HOST PID
01290 PKSTAT   = $03 ; PAKET STATUS
01300 FNADDR   = $04 ; USB ADDR (WO)
01310 MCNTRL   = $05 ; MAIN CONTROL
01320 CDTASET  = $0E
01330 SOFCNT   = $0F ; CNTRL 2 REG
01340 SOFLOW   = $0E ; SOF LOW
01350 INTSTAT  = $0D ; IRQ STATUS
01360 ;
01370 ; USB CONSTANTS
01380 ;
01390 ; INTENA AND INTSTAT MASKS
01400 EP0DONE  = $01
01410 EP1DONE  = $02
01420 EP2DONE  = $04
01430 EP3DONE  = $08
01440 DMADONE  = $10
01450 SOFRECV  = $20
01460 USBRSET  = $40
01470 DMASTAT  = $80
01480 ;
01490 ; ENDPOINT CONTROL REG
01500 EPC0     = $00 ; ENDPOINT 0
01510 EPC1     = $10 ; ENDPOINT 1
01520 EPC2     = $20 ; ENDPOINT 2
01530 EPC3     = $30 ; ENDPOINT 3
01540 ;
01550 ; ENDPOINT REGISTER OFFSET
01560 ;
01570 EPC      = $00 ; CONTROL
01580 EPBA     = $01 ; BASE ADDRESS
01590 EPBL     = $02 ; BASE LENGTH
01600 EPPS     = $03 ; PACKET STATUS
01610 EPTC     = $04 ; TRANSFERCOUNT
01620 ;
01630 ; PID VALUES
01640 ;
01650 SOFPID   = $05 ; SOF PID
01660 INPID    = $90 ; PACKET ID
01670 SETPID   = $D0 ; SET ADDRESS REQ
01680 ;
01690 ; SET ADDRESS PACKET
01700 ;
01710 SETADDR  .HX 0005010000000000
01720 ;
01730 ; SET CONFIG PACKET
01740 ;
01750 SETCONF  .HX 0009010000000000
01760 ;
01770 ; ATARI MEMORY LOCATIONS
01780 ;
01790 STICK0   = $0278
01800 STRIG0   = $0284
01810 ;
01820 ; USB JOYSTICK SHADOW REGISTER
01830 ;
01840 USBHORZ  = $0270
01850 USBVERT  = $0271
01860 USBTRIG0 = $0272
01870 USBTRIG1 = $0273
01880 USBTHRUS = $0274
01890 ;
01900 SETVBV   = $E45C
01910 XITVBV   = $E462
01920 VCOUNT   = $D40B
01930 CONSOL   = $D01F
01940 ;
01950 ------------------------------
01960 USBRESET
01970          LDA #$AE ; SET SOF
01980          LDX #SOFCNT ; HIGH COUNT
01990          JSR REGSTORE
02000 ;
02010          LDA #$08    ; RESET USB
02020          LDX #MCNTRL ; FULLSPEED
02030          JSR REGSTORE
02040 ;
02050          LDA #$10
02060          JSR PAUSE
02070 ;
02080          LDA #00
02090          LDX #MCNTRL
02100          JSR REGSTORE
02110 ;
02120          RTS
02130 ------------------------------
02140 QUERYUSBRESET
02150 ; OUT: A=0 NO USB RESET
02160 ;    A!=0 USBRESET
02170 ;
02180          LDX #INTSTAT
02190          JSR REGFETCH
02200          AND #USBRSET
02210          RTS
02220 ------------------------------
02230 CLEARIRQ
02240          LDA #$FF
02250          LDX #INTSTAT
02260          JMP REGSTORE
02270 ------------------------------
02280 SPEED
02290 ; OUT: A=0 LOW SPEED DEVICE
02300 ;      A!=0 HIGH SPEED DEVICE
02310 ;           OR ERROR
02320 ;
02330          JSR USBRESET
02340          JSR CLEARIRQ
02350          LDA #10
02360          JSR PAUSE
02370          JSR QUERYUSBRESET
02380          BEQ .1 ; NO RESET
02390          JSR CLEARIRQ
02400          LDA #$FF
02410          RTS
02420 ;
02430 .1       LDX #INTSTAT
02440          JSR REGFETCH
02450          AND #DMASTAT
02460          BNE .2
02470 ;
02480 ; LOW SPEED
02490 ;
02500          LDA #$AE
02510          LDX #SOFCNT
02520          JSR REGSTORE
02530 ;
02540          LDA #$E0
02550          LDX #CDTASET
02560          JSR REGSTORE
02570 ;
02580          LDA #$05
02590          LDX #MCNTRL
02600          JSR REGSTORE
02610 ;
02620          JSR SETUPUSB
02630          LDA #$00
02640 ;
02650 ; FULL SPEED OR ERROR
02660 ;
02670 .2
02680          RTS
02690 ------------------------------
02700 SETUPUSB
02710          LDA #$50
02720          LDX #EPC0+EPPS
02730          JSR REGSTORE
02740 ;
02750          LDA #$00
02760          LDX #EPC0+EPTC
02770          JSR REGSTORE
02780 ;
02790          LDA #$01
02800          LDX #EPC0
02810          JSR REGSTORE
02820 ;
02830          LDA #25
02840          JSR PAUSE
02850 ;
02860          JSR CLEARIRQ
02870          RTS
02880 ------------------------------
02890 INITJOYST
02900          LDA #08
02910          LDX #MCNTRL
02920          JSR REGSTORE
02930 ;
02940          LDA #14
02950          JSR PAUSE
02960 ;
02970          LDA #$21
02980          LDX #MCNTRL
02990          JSR REGSTORE
03000 ;
03010          LDA #$10    ; $10 ADDR
03020          LDX #BUFADR ; DATABUF
03030          JSR REGSTORE
03040 ;
03050          LDA #$8     ; 8 BYTE
03060          LDX #BUFLEN ; DATABUF
03070          JSR REGSTORE
03080 ;
03090          LDA #$E0    ; 1MS EOP
03100          LDX #SOFLOW
03110          JSR REGSTORE
03120 ;
03130          LDA #$EE
03140          LDX #SOFCNT
03150          JSR REGSTORE
03160 ;
03170 ; SET BUFFER FOR SETUP-ADDRESS
03180 ; REQUEST = 1
03190 ;
03200          LDY #8
03210 .1       TYA
03220          CLC
03230          ADC #$F  ; BUF ADDR
03240          TAX
03250          LDA SETADDR-1,Y
03260          JSR REGSTORE
03270          DEY
03280          BNE .1
03290 ;
03300          LDA #00     ; WE USE
03310          LDX #FNADDR ; ADDR 0
03320          JSR REGSTORE
03330 ;
03340          LDA #SETPID
03350          LDX #PIDEP
03360          JSR REGSTORE
03370 ;
03380 .2       LDA #07
03390          JSR PROCESS
03400          AND #04
03410          BNE .2
03420 ;
03430          LDA #20
03440          JSR PAUSE
03450 ;
03460          LDA #INPID
03470          LDX #PIDEP
03480          JSR REGSTORE
03490 ;
03500          LDA #03
03510          JSR PROCESS
03520 ;
03530 ; SELECT CONFIGURATION 1
03540 ;
03550          LDY #8
03560 .3       TYA
03570          CLC
03580          ADC #$F
03590          TAX
03600          LDA SETCONF-1,Y
03610          JSR REGSTORE
03620          DEY
03630          BNE .3
03640 ;
03650          LDA #01
03660          LDX #FNADDR ; NEW ADDR
03670          JSR REGSTORE
03680 ;
03690          LDA #SETPID
03700          LDX #PIDEP
03710          JSR REGSTORE
03720 ;
03730 .4       LDA #07
03740          JSR PROCESS
03750          AND #04
03760 ;
03770          BNE .4
03780 ;
03790          LDA #INPID
03800          LDX #PIDEP
03810          JSR REGSTORE
03820 ;
03830          LDA #03
03840          JSR PROCESS
03850 ;
03860          LDA #INPID
03870          ORA #01
03880          LDX #PIDEP
03890          JSR REGSTORE
03900 ;
03910          RTS
03920 ------------------------------
03930 ; PRINT INLINE STRING
03940 ; END MARKER '@'
03950 ;
03960 PRINT    PLA         get Return address
03970          STA $D0     from Stack
03980          PLA         and store
03990          STA $D1     as pointer
04000 ;
04010 INCP     INC $D0     increase
04020          BNE .1      pointer
04030          INC $D1
04040 .1       LDX #0      read Char from RAM
04050          LDA ($D0,X)
04060          CMP #'@     End?
04070          BEQ ENDPR   yes==>
04080          JSR PUTCHAR Print Char
04090          JMP INCP    back to loop
04100 ;
04110 ENDPR    LDA $D1     store pointer
04120          PHA         as new
04130          LDA $D0     return address
04140          PHA         on stack
04150          RTS         continue pgm
04160 ;            after text
04170 ------------------------------
04180 PUTCHAR  TAX         Print char
04190          LDA $E407   with OS
04200          PHA         Routine
04210          LDA $E406
04220          PHA
04230          TXA
04240          RTS         JUMP
04250 ------------------------------
04260 WAITJOYSTICK
04270          JSR PRINT
04280          .HX 9B
04290          .AS "ATARI USB JOYSTICK DRIVER"
04300          .HX 9B
04310          .AS "Version 1.0 / GNU License"
04320          .HX 9B
04330          .AS "(c) 2004 ABBUC e.V."
04340          .HX 9B
04350          .AS "H. Reminder, T. Grasel, C. Strotmann"
04360          .HX 9B9B
04370          .AS "WAIT FOR DEVICE, [START] TO SKIP..."
04380          .HX 9B40
04390 .1       JSR SPEED
04400          BEQ .2
04410 ; QUERY CONSOL KEYS
04420          LDA CONSOL
04430          AND #1 ; START KEY
04440          BEQ .3 ; SKIP USB
04450          BNE .1
04460 ;
04470 .2       JSR PRINT
04480          .AS "LOW SPEED DEVICE DETECTED!"
04490          .HX 9B40
04500 ;
04510          JSR INITJOYST
04520          JSR PRINT
04530          .AS "JOYSTICK INITILIZED."
04540          .HX 9B40
04550          LDX /JOYVBI
04560          LDY #JOYVBI
04570          LDA #7
04580          JSR SETVBV
04590          RTS
04600 ;
04610 .3       JSR PRINT
04620          .AS "USB detection skipped,"
04630          .HX 9B
04640          .AS "no USB Driver installed!"
04650          .HX 9B40
04660          RTS
04670 ------------------------------
04680 RESPART  .OR $600
04690 ;
04700 ; THRESHOLD ANALOG->DIGITAL
04710 THLEFT   .HX 60
04720 THRIGHT  .HX A0
04730 THUP     .HX 60
04740 THDOWN   .HX A0
04750 ------------------------------
04760 REGFETCH
04770 ; IN:  X=USB REGISTER
04780 ; OUT: A=USB DATA
04790          STX USBSEL
04800          LDA USBDTA
04810          RTS
04820 ------------------------------
04830 REGSTORE
04840 ; IN:  A=USB DATA
04850 ;      X=USB REGISTER
04860          STX USBSEL
04870          STA USBDTA
04880          RTS
04890 ------------------------------
04900 PAUSE
04910 ; IN:  A=NUMBER OF 1/50 SEC
04920          TAX
04930 .1       LDA VCOUNT
04940          BNE .1
04950          DEX
04960          BNE .1
04970          RTS
04980 ------------------------------
04990 GETJOYSTICK
05000 ;
05010          LDA #03
05020          JSR PROCESS
05030 ;        AND #01
05040 ;        BEQ .2  ; NO DATA
05050 ;
05060          LDX #$10
05070          JSR REGFETCH
05080          STA USBHORZ
05090          LDX #$11
05100          JSR REGFETCH
05110          STA USBVERT
05120          LDX #$12
05130          JSR REGFETCH
05140          STA USBTHRUS
05150          LDX #$13
05160          JSR REGFETCH
05170          STA USBTRIG0
05180          LDX #$14
05190          JSR REGFETCH
05200          STA USBTRIG1
05210 ;
05220 .2       RTS
05230 ------------------------------
05240 PROCESS
05250 ; IN:  A=USB COMMAND
05260 ; OUT: A=RETURNCODE
05270          PHA
05280          LDA #01
05290          LDX #INTSTAT
05300          JSR REGSTORE
05310 ;
05320          PLA
05330          LDX #CTL
05340          JSR REGSTORE
05350 ;
05360 .1       LDX #INTSTAT
05370          JSR REGFETCH
05380          AND #$01
05390          BEQ .1
05400 ;
05410          LDX #PKSTAT
05420          JSR REGFETCH
05430          RTS
05440 ------------------------------
05450 USB2ATA
05460          LDA #$0F
05470          STA STICK0
05480          LDA #1
05490          STA STRIG0
05500 ;
05510          LDA USBTRIG0
05520          ORA USBTRIG1
05530          BEQ GETSTICK
05540          LDA #0
05550          STA STRIG0
05560 ;
05570 GETSTICK
05580          LDA STICK0
05590          LDX USBHORZ
05600          CPX THLEFT
05610          BCC .1   ; LEFT
05620          CPX THRIGHT
05630          BCS .2   ; RIGHT
05640          BCC .10
05650 .1       EOR #$04 ; LEFT
05660          BPL .3
05670 .2       EOR #$08 ; RIGHT
05680 .3       STA STICK0
05690 .10
05700          LDX USBVERT
05710          CPX THUP
05720          BCC .11  ; UP
05730          CPX THDOWN
05740          BCS .12  ; DOWN
05750          BCC .20
05760 .11      EOR #$01 ; UP
05770          BNE .13
05780 .12      EOR #$02 ; DOWN
05790 .13      STA STICK0
05800 .20      RTS
05810 ------------------------------
05820 JOYVBI
05830          LDA STICK0
05840          EOR #$0F
05850          BNE .1
05860          LDA STRIG0
05870          BEQ .1
05880 ;
05890          JSR GETJOYSTICK
05900          JSR USB2ATA
05910 .1       JMP XITVBV
05920 ------------------------------
05930          .OR $2E0
05940          .DA WAITJOYSTICK
05950 ------------------------------

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« This page (revision-4) was last changed on 16-Apr-2010 16:20 by Stefan Haubenthal