mirror of
https://github.com/a2stuff/vnIIc.git
synced 2024-09-30 04:55:36 +00:00
934 lines
45 KiB
Plaintext
934 lines
45 KiB
Plaintext
ca65 V2.16 - Git f5e9b401
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Main file : client.s
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Current file: client.s
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000000r 1
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000000r 1 PADDLE_SUPPORT = 1
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000000r 1 ;MOUSE_SUPPORT = 1 ; NOTE: tests for ifdef
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000000r 1
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000000r 1 ;---------------------------------------------------------
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000000r 1 ; Super Serial constants/locations
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000000r 1 ;---------------------------------------------------------
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000000r 1
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000000r 1 ; These get incremented by the slot where they appear
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000000r 1 UACTRL = $C08B ; Control Register
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000000r 1 UACMND = $C08A ; Command Register
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000000r 1 UASTAT = $C089 ; Status Register
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000000r 1 UADATA = $C088 ; Data Register - incoming and outgoing data
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000000r 1
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000000r 1
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000000r 1 ;---------------------------------------------------------
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000000r 1 ; Hi-res graphics constants/locations
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000000r 1 ;---------------------------------------------------------
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000000r 1
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000000r 1 PLOTPAGE = $E6 ; Active hires plotting page (Applesoft)
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000000r 1 PLOTPAGE1 = $20
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000000r 1 PLOTPAGE2 = $40
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000000r 1 PAGESIZE = $20 ; Size of hi-res screen in pages
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000000r 1
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000000r 1
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000000r 1 CLRTEXT = $C050 ;display graphics
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000000r 1 SETTEXT = $C051 ;display text
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000000r 1 CLRMIXED = $C052 ;clear mixed mode- enable full graphics
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000000r 1 SETMIXED = $C053 ;enable graphics/text mixed mode
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000000r 1 PAGE1 = $C054 ;select text/graphics page1
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000000r 1 PAGE2 = $C055 ;select text/graphics page2
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000000r 1 CLRHIRES = $C056 ;select Lo-res
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000000r 1 SETHIRES = $C057 ;select Hi-res
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000000r 1
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000000r 1
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000000r 1 ;---------------------------------------------------------
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000000r 1 ; Keyboard input constants/locations
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000000r 1 ;---------------------------------------------------------
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000000r 1
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000000r 1 KEYBD = $C000 ; key down in bit 7; key code in lower bits
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000000r 1 STROBE = $C010 ; write to clear key down state
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000000r 1 OPNAPPLE = $C061 ; open apple (command) key data (read)
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000000r 1 CLSAPPLE = $C062 ; closed apple (option) key data (read)
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000000r 1 PB2 = $C063 ; Paddle button 2 (read)
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000000r 1 PB3 = $C060 ; Paddle button 3 (read)
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000000r 1
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000000r 1
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000000r 1 ;---------------------------------------------------------
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000000r 1 ; Paddle/Joystick constants/locations/routines
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000000r 1 ;---------------------------------------------------------
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000000r 1
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000000r 1 PADDLE0 = $C064 ; bit 7 = status of pdl-0 timer (read)
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000000r 1 PADDLE1 = $C065 ; bit 7 = status of pdl-1 timer (read)
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000000r 1 PADDLE2 = $C066 ; bit 7 = status of pdl-2 timer (read)
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000000r 1 PADDLE3 = $C067 ; bit 7 = status of pdl-3 timer (read)
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000000r 1 PDLTRIG = $C070 ; trigger paddles
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000000r 1
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000000r 1 PREAD = $FB1E ; Monitor paddle reading routine, call
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000000r 1 ; with paddle # in X, returns value in Y
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000000r 1
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000000r 1
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000000r 1 ;--------------------------------------------------
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000000r 1 ; Mouse locations and constants
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000000r 1 ;--------------------------------------------------
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000000r 1
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000000r 1 ; For READMOUSE and POSMOUSE
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000000r 1
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000000r 1 MOUSE_X_LSB = $0478 ; + slot Low byte of absolute X position
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000000r 1 MOUSE_X_MSB = $0578 ; + slot High byte of absolute X position
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000000r 1 MOUSE_Y_LSB = $04F8 ; + slot Low byte of absolute Y position
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000000r 1 MOUSE_Y_MSB = $05F8 ; + slot High byte of absolute Y position
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000000r 1 MOUSE_RSV1 = $0678 ; + slot Reserved and used by the firmware
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000000r 1 MOUSE_RSV2 = $06F8 ; + slot Reserved and used by the firmware
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000000r 1 MOUSE_BTN = $0778 ; + slot Button 0/1 interrupt status byte
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000000r 1 MOUSE_MODE = $07F8 ; + slot Mode byte
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000000r 1
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000000r 1 ; For CLAMPMOUSE:
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000000r 1
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000000r 1 MOUSE_CMIN_LSB = $0478 ; low byte of low clamp
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000000r 1 MOUSE_CMIN_MSB = $0578 ; high byte of low clamp
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000000r 1 MOUSE_CMAX_LSB = $04F8 ; low byte of high clamp
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000000r 1 MOUSE_CMAX_MSB = $05F8 ; high byte of high clamp
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000000r 1
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000000r 1 MOUSE_CLAMP_X = 0 ; Value for A when setting X clamp with CLAMPMOUSE
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000000r 1 MOUSE_CLAMP_Y = 1 ; Value for A when setting X clamp with CLAMPMOUSE
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000000r 1
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000000r 1
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000000r 1 ;---------------------------------------------------------
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000000r 1 ; Other
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000000r 1 ;---------------------------------------------------------
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000000r 1
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000000r 1 SLOT_CASE = $c000 ; Firmware for slots are at $cx00
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000000r 1 MAX_SLOT = 7 ; Maximum slot # on an Apple II
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000000r 1
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000000r 1 ZP = $FA ; Write cursor location on zero page
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000000r 1 ESCAPE = $80 ; Unused image data byte (all black2)
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000000r 1 ESCAPE2 = $FF ; Unused image data byte (all white2)
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000000r 1
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000000r 1
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000000r 1 ;---------------------------------------------------------
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000000r 1 ; Generic Macros
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000000r 1 ;---------------------------------------------------------
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000000r 1
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000000r 1 ;----------------------------------------
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000000r 1 .macro SaveRegisters
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000000r 1 ;----------------------------------------
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000000r 1 pha
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000000r 1 txa
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000000r 1 pha
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000000r 1 tya
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000000r 1 pha
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000000r 1 .endmacro
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000000r 1
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000000r 1 ;----------------------------------------
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000000r 1 .macro RestoreRegisters
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000000r 1 ;----------------------------------------
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000000r 1 pla
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000000r 1 tay
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000000r 1 pla
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000000r 1 tax
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000000r 1 pla
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000000r 1 .endmacro
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000000r 1
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000000r 1
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000000r 1 ;-------------------------------------------------------------------
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000000r 1 ;
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000000r 1 ; Application-level logic
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000000r 1 ;
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000000r 1 ;-------------------------------------------------------------------
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000000r 1
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000000r 1
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000000r 1 .ORG $6000
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006000 1
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006000 1 ;---------------------------------------------------------
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006000 1 .proc APP_ENTRY
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006000 1 ;---------------------------------------------------------
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006000 1 ; Initialize the application, and enter the main loop
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006000 1 ;---------------------------------------------------------
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006000 1 AD C7 61 lda PSLOT ; Use slot 2
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006003 1 20 71 61 jsr INITSSC ; Initialize Super Serial Card
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006006 1 20 2C 61 jsr INITHIRES ; Initialize Hi-Res graphics
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006009 1 20 40 60 jsr INITINPUT ; Initialize input devices
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00600C 1 20 19 60 jsr MAINLOOP
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00600F 1
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00600F 1 ; fall through
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00600F 1 .endproc
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00600F 1
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00600F 1 ;---------------------------------------------------------
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00600F 1 .proc APP_EXIT
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00600F 1 ;---------------------------------------------------------
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00600F 1 ; Clean up and exit app
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00600F 1 ;---------------------------------------------------------
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00600F 1 20 BE 61 jsr RESETSSC
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006012 1 8D 54 C0 sta PAGE1
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006015 1 8D 51 C0 sta SETTEXT
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006018 1 60 rts
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006019 1 .endproc
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006019 1
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006019 1
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006019 1 ;-------------------------------------------------------------------
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006019 1 ;
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006019 1 ; Main loop functionality
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006019 1 ;
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006019 1 ;-------------------------------------------------------------------
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006019 1
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006019 1
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006019 1 ;---------------------------------------------------------
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006019 1 .proc MAINLOOP
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006019 1 ;---------------------------------------------------------
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006019 1
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006019 1 ; TODO: Sort out the protocol - should be able to send
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006019 1 ; input state without receiving data
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006019 1 ; jsr SSCHASDATA ; Anything to read?
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006019 1 ; bne :+ ; Nope
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006019 1
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006019 1 20 23 60 : jsr RECEIVEPAGE
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00601C 1 20 43 61 jsr FLIPHIRES
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00601F 1 4C 19 60 jmp :- ; TODO: define an exit trigger
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006022 1 60 rts
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006023 1 .endproc
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006023 1
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006023 1
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006023 1 ;---------------------------------------------------------
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006023 1 .proc RECEIVEPAGE
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006023 1 ;---------------------------------------------------------
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006023 1 ; Pull a hi-res page down over serial
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006023 1 ;
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006023 1 ; Protocol is:
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006023 1 ; * Recieve 256 bytes (graphic data)
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006023 1 ; * Send 1 byte (input state)
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006023 1 ;---------------------------------------------------------
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006023 1
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006023 1 A9 00 lda #0 ; set up write pointer
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006025 1 85 FA sta ZP
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006027 1 A5 E6 lda PLOTPAGE
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006029 1 85 FB sta ZP+1
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00602B 1 A2 20 ldx #PAGESIZE ; plan to receive this many pages
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00602D 1 A0 00 ldy #0
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00602F 1
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00602F 1 20 A9 61 : jsr SSCGET ; TODO: look for escape codes in the sequence
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006032 1 91 FA sta (ZP),Y
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006034 1 C8 iny
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006035 1 D0 F8 bne :- ; Do a full page...
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006037 1
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006037 1 20 5E 60 jsr SENDINPUTSTATE ; brief moment to send data back upstream
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00603A 1
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00603A 1 E6 FB inc ZP+1
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00603C 1 CA dex
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00603D 1 D0 F0 bne :- ; ...as many pages as we need
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00603F 1 60 rts
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006040 1 .endproc
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006040 1
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006040 1
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006040 1 ;-------------------------------------------------------------------
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006040 1 ;
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006040 1 ; Input device routines
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006040 1 ;
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006040 1 ;-------------------------------------------------------------------
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006040 1 ; Protocol:
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006040 1 ; $7f - $ff - key down, ASCII code + $80
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006040 1 ; otherwise, a transition:
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006040 1 ;
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006040 1 SIS_KBUP = $00 ; Key up
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006040 1 SIS_OADOWN = $01 ; Open Apple transitioned to down
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006040 1 SIS_OAUP = $02 ; Open Apple transitioned to up
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006040 1 SIS_CADOWN = $03 ; Closed Apple transitioned to down
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006040 1 SIS_CAUP = $04 ; Closed Apple transitioned to up
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006040 1 ;
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006040 1 ; $05 - $0f : reserved
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006040 1 ;
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006040 1 SIS_MX = $10 ; Mouse X high nibble
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006040 1 SIS_MY = $20 ; Mouse Y high nibble
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006040 1 SIS_PDL0 = $30 ; Paddle 0 high nibble
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006040 1 SIS_PDL1 = $40 ; Paddle 1 high nibble
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006040 1 ;
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006040 1 ; $50 - $7e : reserved
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006040 1 ;
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006040 1 SIS_SYNC = $7f
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006040 1
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006040 1 ;---------------------------------------------------------
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006040 1 .proc INITINPUT
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006040 1 ;---------------------------------------------------------
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006040 1 ; Initialize input devices and storage for detecting
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006040 1 ; state transitions
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006040 1 ;---------------------------------------------------------
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006040 1
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006040 1 ; Init keyboard state
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006040 1 A9 00 lda #SIS_KBUP
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006042 1 8D C9 61 sta LASTKB
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006045 1
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006045 1 ; Init Open/Closed Apple states
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006045 1 A9 02 lda #SIS_OAUP ; NOTE: Don't store OA state as it fluctuates
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006047 1 8D CA 61 sta LASTOA
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00604A 1 A9 04 lda #SIS_CAUP ; NOTE: Don't store CA state as it fluctuates
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00604C 1 8D CB 61 sta LASTCA
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00604F 1
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00604F 1 .ifdef PADDLE_SUPPORT
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00604F 1 ; Init Paddle state
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00604F 1 A9 30 lda #SIS_PDL0
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006051 1 09 08 ora #8 ; Middle of range 0...15
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006053 1 8D CC 61 sta LASTP0
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006056 1 A9 40 lda #SIS_PDL1
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006058 1 09 08 ora #8 ; Middle of range 0...15
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00605A 1 8D CD 61 sta LASTP1
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00605D 1 .endif
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00605D 1
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00605D 1 .ifdef MOUSE_SUPPORT
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00605D 1 jsr FINDMOUSE
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00605D 1 .endif
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00605D 1
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00605D 1 60 rts
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00605E 1 .endproc
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00605E 1
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00605E 1
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00605E 1 ;---------------------------------------------------------
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00605E 1 .proc SENDINPUTSTATE
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00605E 1 ;---------------------------------------------------------
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00605E 1 ; Send keyboard joystick and/or mouse state over the
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00605E 1 ; serial port
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00605E 1 ;
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00605E 1 ; Algorithm:
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00605E 1 ; - Send key state (if it changed)
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00605E 1 ; - otherwise send open-apple state (if it changed)
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00605E 1 ; - otherwise send closed-apple state (if it changed)
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00605E 1 ; - otherwise send paddle 0 state (if it changed)
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00605E 1 ; - (TODO: Mouse state)
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00605E 1 ; - otherwise send sync byte
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00605E 1 ;---------------------------------------------------------
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00605E 1
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00605E 1 48 8A 48 98 SaveRegisters ; Store registers
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006062 1 48
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006063 1 18 clc
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006064 1
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006064 1 ;--------------------------------------
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006064 1 ; Send key state, if it changed
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006064 1
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006064 1 ; NOTE: Can't use STROBE to detect key up -> key down transition
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006064 1 ; since the msb can change before the key code. Instead, consider
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006064 1 ; these cases:
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006064 1 ;
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006064 1 ; OLD STATE KEYBD STROBE RESULT
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006064 1 ; Up Up - No-op
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006064 1 ; Up Down - Save and send key down
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006064 1 ; Down - Up Save and send key up
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006064 1 ; Down - Down Save and send key ONLY if different
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006064 1 ;
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006064 1
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006064 1 AD C9 61 lda LASTKB
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006067 1 D0 0E bne KEY_WAS_DOWN
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006069 1
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006069 1 KEY_WAS_UP:
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006069 1 AD 00 C0 lda KEYBD ; Read keyboard
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00606C 1 10 27 bpl END_KEY ; - still up
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00606E 1 8D C9 61 sta LASTKB ; Down, so save it
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006071 1 20 9A 61 jsr SSCPUT ; and send it
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006074 1 4C 26 61 jmp DONE
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006077 1
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006077 1 KEY_WAS_DOWN:
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006077 1 ; key was down - strobe should match
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006077 1 ; unless the key changed or was released
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006077 1 AD 10 C0 lda STROBE
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00607A 1 30 0B bmi STROBE_DOWN
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00607C 1 STROBE_UP:
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00607C 1 A9 00 lda #SIS_KBUP ; Key was released
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00607E 1 8D C9 61 sta LASTKB ; so save it
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006081 1 20 9A 61 jsr SSCPUT ; and send it
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006084 1 4C 26 61 jmp DONE
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006087 1 STROBE_DOWN:
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006087 1 CD C9 61 cmp LASTKB ; Same key as last time?
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00608A 1 F0 09 beq END_KEY ; - no change
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00608C 1 8D C9 61 sta LASTKB ; New key, so save it
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00608F 1 20 9A 61 jsr SSCPUT ; and send it
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006092 1 4C 26 61 jmp DONE
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006095 1
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006095 1 END_KEY:
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006095 1
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006095 1 ;--------------------------------------
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006095 1 ; Send Open Apple state, if it changed
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006095 1
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006095 1 ; TODO: Can simplify this code if we make the high bits the same
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006095 1 ; for both OA states and bit = 0 down: lda OPNAPPLE ; ROL ; LDA #0 ; ROL ; ORA #signature
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006095 1
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006095 1 TEST_OA:
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006095 1 AD 61 C0 lda OPNAPPLE ; Test Open Apple state
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006098 1 30 10 bmi OA_IS_DOWN
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00609A 1 OA_IS_UP:
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00609A 1 A9 02 lda #SIS_OAUP
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00609C 1 CD CA 61 cmp LASTOA ; Changed?
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00609F 1 F0 19 beq END_OA ; Nope
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0060A1 1 8D CA 61 sta LASTOA ; Yes, save it / send it!
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0060A4 1 20 9A 61 jsr SSCPUT
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0060A7 1 4C 26 61 jmp DONE
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0060AA 1 OA_IS_DOWN:
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0060AA 1 A9 01 lda #SIS_OADOWN
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0060AC 1 CD CA 61 cmp LASTOA ; Changed?
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0060AF 1 F0 09 beq END_OA ; Nope
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0060B1 1 8D CA 61 sta LASTOA ; Yes, save it / send it!
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0060B4 1 20 9A 61 jsr SSCPUT
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0060B7 1 4C 26 61 jmp DONE
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0060BA 1
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0060BA 1 END_OA:
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0060BA 1
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0060BA 1 ;--------------------------------------
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0060BA 1 ; Send Closed Apple state, if it changed
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0060BA 1
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0060BA 1 TEST_CA:
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0060BA 1 AD 62 C0 lda CLSAPPLE ; Has the Open Apple/Button 1 value changed?
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0060BD 1 30 10 bmi CA_IS_DOWN
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0060BF 1 CA_IS_UP:
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0060BF 1 A9 04 lda #SIS_CAUP
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0060C1 1 CD CB 61 cmp LASTCA ; Changed?
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0060C4 1 F0 19 beq END_CA ; Nope
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0060C6 1 8D CB 61 sta LASTCA ; Yes, save it
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0060C9 1 20 9A 61 jsr SSCPUT ; and send it
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0060CC 1 4C 26 61 jmp DONE
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0060CF 1 CA_IS_DOWN:
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0060CF 1 A9 03 lda #SIS_CADOWN
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0060D1 1 CD CB 61 cmp LASTCA ; Changed?
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0060D4 1 F0 09 beq END_CA ; Nope
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0060D6 1 8D CB 61 sta LASTCA ; Yes, save it
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0060D9 1 20 9A 61 jsr SSCPUT ; and send it
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0060DC 1 4C 26 61 jmp DONE
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0060DF 1
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0060DF 1 END_CA:
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0060DF 1
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0060DF 1 .ifdef PADDLE_SUPPORT
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0060DF 1
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0060DF 1 ;--------------------------------------
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0060DF 1 ; Send Paddle 0 state, if it changed
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0060DF 1 TEST_PDL0:
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0060DF 1 A2 00 ldx #0
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0060E1 1 20 1E FB jsr PREAD
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0060E4 1 98 tya
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0060E5 1 4A lsr ; Shift to low nibble
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0060E6 1 4A lsr
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0060E7 1 4A lsr
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0060E8 1 4A lsr
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0060E9 1 09 30 ora #SIS_PDL0 ; And mark it with the signature
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0060EB 1 CD CC 61 cmp LASTP0 ; Change?
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0060EE 1 F0 09 beq END_PDL0 ; Nope
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0060F0 1 8D CC 61 sta LASTP0 ; Yes, save it
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0060F3 1 20 9A 61 jsr SSCPUT ; and send it
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0060F6 1 4C 26 61 jmp DONE
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0060F9 1 END_PDL0:
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0060F9 1 ; Chew up time so next paddle read will be correct
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0060F9 1 ; TODO: Replace this with a "read both" strobes
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0060F9 1 ; routine
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0060F9 1 EA EA EA EA : .repeat 11 ; By experiment, need 11 NOPs.
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0060FD 1 EA EA EA EA
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006101 1 EA EA EA
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006104 1 nop
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006104 1 .endrep
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006104 1 C8 iny
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006105 1 D0 F2 bne :-
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006107 1
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006107 1 ;--------------------------------------
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006107 1 ; Send Paddle 1 state, if it changed
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006107 1 TEST_PDL1:
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006107 1 A2 01 ldx #1
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006109 1 20 1E FB jsr PREAD
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00610C 1 98 tya
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00610D 1 4A lsr ; Shift to low nibble
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00610E 1 4A lsr
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00610F 1 4A lsr
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006110 1 4A lsr
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006111 1 09 40 ora #SIS_PDL1 ; And mark it with the signature
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006113 1 CD CD 61 cmp LASTP1 ; Change?
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006116 1 F0 09 beq END_PDL1 ; Nope
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006118 1 8D CD 61 sta LASTP1 ; Yes, save it
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00611B 1 20 9A 61 jsr SSCPUT ; and send it
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00611E 1 4C 26 61 jmp DONE
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006121 1 END_PDL1:
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006121 1 ; NOTE: No need to chew time like PDL0
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006121 1 ; since data receive will make up for it; if we
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006121 1 ; loop in SENDINPUTSTATE need to add it here
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006121 1
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|
006121 1 .endif
|
|
006121 1
|
|
006121 1
|
|
006121 1 ;--------------------------------------
|
|
006121 1 .ifdef MOUSE_SUPPORT
|
|
006121 1 .error "Mouse support not fully implemented"
|
|
006121 1 .endif
|
|
006121 1
|
|
006121 1 ;--------------------------------------
|
|
006121 1 ; No state changes so send sync byte
|
|
006121 1
|
|
006121 1 A9 7F lda #SIS_SYNC
|
|
006123 1 20 9A 61 jsr SSCPUT
|
|
006126 1
|
|
006126 1 DONE:
|
|
006126 1 68 A8 68 AA RestoreRegisters
|
|
00612A 1 68
|
|
00612B 1 60 rts
|
|
00612C 1
|
|
00612C 1 .endproc
|
|
00612C 1
|
|
00612C 1
|
|
00612C 1 ;-------------------------------------------------------------------
|
|
00612C 1 ;
|
|
00612C 1 ; Hi-res graphics routines
|
|
00612C 1 ;
|
|
00612C 1 ;-------------------------------------------------------------------
|
|
00612C 1
|
|
00612C 1 ;---------------------------------------------------------
|
|
00612C 1 .proc INITHIRES
|
|
00612C 1 ;---------------------------------------------------------
|
|
00612C 1 ; Set up the graphics display and pointers
|
|
00612C 1 ;---------------------------------------------------------
|
|
00612C 1 A9 20 lda #PLOTPAGE1 ; clear page 1
|
|
00612E 1 85 E6 sta PLOTPAGE
|
|
006130 1 20 59 61 jsr CLEARHIRES
|
|
006133 1
|
|
006133 1 20 43 61 jsr FLIPHIRES ; then show it and flip to 2
|
|
006136 1 8D 57 C0 sta SETHIRES
|
|
006139 1 8D 50 C0 sta CLRTEXT
|
|
00613C 1 8D 52 C0 sta CLRMIXED
|
|
00613F 1 8D 54 C0 sta PAGE1
|
|
006142 1
|
|
006142 1 60 rts
|
|
006143 1 .endproc
|
|
006143 1
|
|
006143 1
|
|
006143 1 ;---------------------------------------------------------
|
|
006143 1 .proc FLIPHIRES
|
|
006143 1 ;---------------------------------------------------------
|
|
006143 1 ; Call when done with the current plotting page
|
|
006143 1 ; (selected in PLOTPAGE) and it will be shown and the
|
|
006143 1 ; other page will be shown.
|
|
006143 1 ;---------------------------------------------------------
|
|
006143 1 A5 E6 lda PLOTPAGE ; plotting on which page?
|
|
006145 1 C9 20 cmp #PLOTPAGE1
|
|
006147 1 F0 08 beq :+
|
|
006149 1
|
|
006149 1 8D 55 C0 sta PAGE2 ; page 2 - so show it
|
|
00614C 1 A9 20 lda #PLOTPAGE1 ; and plot on page 1
|
|
00614E 1 85 E6 sta PLOTPAGE
|
|
006150 1 60 rts
|
|
006151 1
|
|
006151 1 8D 54 C0 : sta PAGE1 ; page 1 - so show it
|
|
006154 1 A9 40 lda #PLOTPAGE2 ; and plot on page 2
|
|
006156 1 85 E6 sta PLOTPAGE
|
|
006158 1 60 rts
|
|
006159 1 .endproc
|
|
006159 1
|
|
006159 1
|
|
006159 1 ;---------------------------------------------------------
|
|
006159 1 .proc CLEARHIRES
|
|
006159 1 ;---------------------------------------------------------
|
|
006159 1 ; Clear hires plotting page (selected in PLOTPAGE) to
|
|
006159 1 ; black uses ZP; not terribly efficient
|
|
006159 1 ;---------------------------------------------------------
|
|
006159 1 A9 00 lda #0 ; Set up ZP as a pointer into the hires page
|
|
00615B 1 85 FA sta ZP
|
|
00615D 1 A5 E6 lda PLOTPAGE
|
|
00615F 1 85 FB sta ZP+1
|
|
006161 1 A2 20 ldx #PAGESIZE ; Clear this many pages
|
|
006163 1 A9 00 lda #0 ; with black!
|
|
006165 1 A8 tay
|
|
006166 1 91 FA : sta (ZP),Y
|
|
006168 1 C8 iny
|
|
006169 1 D0 FB bne :-
|
|
00616B 1 E6 FB inc ZP+1
|
|
00616D 1 CA dex
|
|
00616E 1 D0 F6 bne :-
|
|
006170 1 60 rts
|
|
006171 1 .endproc
|
|
006171 1
|
|
006171 1
|
|
006171 1
|
|
006171 1 ;-------------------------------------------------------------------
|
|
006171 1 ;
|
|
006171 1 ; Serial port routines
|
|
006171 1 ;
|
|
006171 1 ;-------------------------------------------------------------------
|
|
006171 1
|
|
006171 1
|
|
006171 1 ;---------------------------------------------------------
|
|
006171 1 .proc INITSSC
|
|
006171 1 ;---------------------------------------------------------
|
|
006171 1 ; Initialize the SSC; slot passed in A
|
|
006171 1 ; [based on ADTPro]
|
|
006171 1 ;---------------------------------------------------------
|
|
006171 1 0A asl ; Slot passed in A
|
|
006172 1 0A asl
|
|
006173 1 0A asl
|
|
006174 1 0A asl ; Now $S0
|
|
006175 1 69 88 adc #$88 ; Low byte of UADATA
|
|
006177 1 AA tax
|
|
006178 1 A9 0B lda #CMND_NRDI ; Command register: no parity, RTS on, DTR on, no interrupts
|
|
00617A 1 9D 02 C0 sta $C002,X
|
|
00617D 1 AC C6 61 ldy PSPEED ; Control register: look up by baud rate (8 data bits, 1 stop bit)
|
|
006180 1 B9 C2 61 lda BPSCTRL,Y
|
|
006183 1 9D 03 C0 sta $C003,X
|
|
006186 1 8E A6 61 stx MOD_UADATA_1+1 ; Modify references to
|
|
006189 1 8E B3 61 stx MOD_UADATA_2+1 ; UADATA to point at
|
|
00618C 1 8E BF 61 stx MOD_UADATA_3+1 ; correct slot (UADATA+S0)
|
|
00618F 1 E8 inx
|
|
006190 1 8E 9C 61 stx MOD_UASTAT_1+1 ; Modify reference to
|
|
006193 1 8E AA 61 stx MOD_UASTAT_2+1 ; UASTAT to point at
|
|
006196 1 8E B7 61 stx MOD_UASTAT_3+1 ; correct slot (UASTAT+S0)
|
|
006199 1 60 rts
|
|
00619A 1
|
|
00619A 1 .endproc
|
|
00619A 1
|
|
00619A 1
|
|
00619A 1 ;---------------------------------------------------------
|
|
00619A 1 SSCPUT:
|
|
00619A 1 ;---------------------------------------------------------
|
|
00619A 1 ; Send accumulator out the serial port
|
|
00619A 1 ; (this is a blocking call)
|
|
00619A 1 ; [based on ADTPro]
|
|
00619A 1 ;---------------------------------------------------------
|
|
00619A 1 48 pha ; Push A onto the stack
|
|
00619B 1 MOD_UASTAT_1:
|
|
00619B 1 AD 89 C0 : lda UASTAT ; Check status bits
|
|
00619E 1 29 70 and #$70
|
|
0061A0 1 C9 10 cmp #$10
|
|
0061A2 1 D0 F7 bne :- ; Output register is full, so loop
|
|
0061A4 1 68 pla
|
|
0061A5 1 MOD_UADATA_1:
|
|
0061A5 1 8D 88 C0 sta UADATA ; Put character
|
|
0061A8 1 60 rts
|
|
0061A9 1
|
|
0061A9 1
|
|
0061A9 1 ;---------------------------------------------------------
|
|
0061A9 1 SSCGET:
|
|
0061A9 1 ;---------------------------------------------------------
|
|
0061A9 1 ; Read a character from the serial port to the accumulator
|
|
0061A9 1 ; (this is a blocking call)
|
|
0061A9 1 ; [based on ADTPro]
|
|
0061A9 1 ;---------------------------------------------------------
|
|
0061A9 1 MOD_UASTAT_2:
|
|
0061A9 1 AD 89 C0 lda UASTAT ; Check status bits
|
|
0061AC 1 29 68 and #$68
|
|
0061AE 1 C9 08 cmp #$8
|
|
0061B0 1 D0 F7 bne SSCGET ; Input register empty, loop
|
|
0061B2 1 MOD_UADATA_2:
|
|
0061B2 1 AD 88 C0 lda UADATA ; Get character
|
|
0061B5 1 60 rts
|
|
0061B6 1
|
|
0061B6 1
|
|
0061B6 1 ;---------------------------------------------------------
|
|
0061B6 1 SSCHASDATA:
|
|
0061B6 1 ;---------------------------------------------------------
|
|
0061B6 1 ; Read a character from the serial port to the accumulator
|
|
0061B6 1 ; (this is a blocking call)
|
|
0061B6 1 ; [based on ADTPro]
|
|
0061B6 1 ;---------------------------------------------------------
|
|
0061B6 1 MOD_UASTAT_3:
|
|
0061B6 1 AD 89 C0 lda UASTAT ; Check status bits
|
|
0061B9 1 29 68 and #$68
|
|
0061BB 1 C9 08 cmp #$8
|
|
0061BD 1 60 rts
|
|
0061BE 1
|
|
0061BE 1
|
|
0061BE 1 ;---------------------------------------------------------
|
|
0061BE 1 RESETSSC:
|
|
0061BE 1 ;---------------------------------------------------------
|
|
0061BE 1 ; Clean up serial port
|
|
0061BE 1 ; [based on ADTPro]
|
|
0061BE 1 ;---------------------------------------------------------
|
|
0061BE 1 MOD_UADATA_3:
|
|
0061BE 1 2C 88 C0 bit UADATA
|
|
0061C1 1 60 rts
|
|
0061C2 1
|
|
0061C2 1
|
|
0061C2 1
|
|
0061C2 1 .ifdef MOUSE_SUPPORT
|
|
0061C2 1 ;-------------------------------------------------------------------
|
|
0061C2 1 ;
|
|
0061C2 1 ; Mouse routines
|
|
0061C2 1 ;
|
|
0061C2 1 ;-------------------------------------------------------------------
|
|
0061C2 1
|
|
0061C2 1 MOUSEPTR = $EB ; Zero page location
|
|
0061C2 1
|
|
0061C2 1 MOUSE_MIN_X = $10
|
|
0061C2 1 MOUSE_MAX_X = $1f
|
|
0061C2 1 MOUSE_CENTER_X = $17
|
|
0061C2 1 MOUSE_MIN_Y = $20
|
|
0061C2 1 MOUSE_MAX_Y = $2f
|
|
0061C2 1 MOUSE_CENTER_Y = $2f
|
|
0061C2 1
|
|
0061C2 1
|
|
0061C2 1 ;--------------------------------------------------
|
|
0061C2 1 ; Macros for common mouse operations
|
|
0061C2 1 ;--------------------------------------------------
|
|
0061C2 1
|
|
0061C2 1 ;----------------------------------------
|
|
0061C2 1 .macro ClampMouse axis, min, max
|
|
0061C2 1 ;----------------------------------------
|
|
0061C2 1 ; axis: MOUSE_CLAMP_X or MOUSE_CLAMP_Y
|
|
0061C2 1 ; min: minimum value (2 byte)
|
|
0061C2 1 ; max: maximum value (2 byte)
|
|
0061C2 1 ;----------------------------------------
|
|
0061C2 1 ; Clamp X to 0...255
|
|
0061C2 1 lda #<min
|
|
0061C2 1 sta MOUSE_CMIN_LSB
|
|
0061C2 1 lda #>min
|
|
0061C2 1 sta MOUSE_CMIN_MSB
|
|
0061C2 1 lda #<max
|
|
0061C2 1 sta MOUSE_CMAX_LSB
|
|
0061C2 1 lda #>max
|
|
0061C2 1 sta MOUSE_CMAX_MSB
|
|
0061C2 1 lda #axis
|
|
0061C2 1 jsr CLAMPMOUSE
|
|
0061C2 1 .endmacro
|
|
0061C2 1
|
|
0061C2 1 ;----------------------------------------
|
|
0061C2 1 .macro PosMouse px, py
|
|
0061C2 1 ;----------------------------------------
|
|
0061C2 1 ldx MOUSE_SLOT
|
|
0061C2 1 lda #<px
|
|
0061C2 1 sta MOUSE_X_LSB,X
|
|
0061C2 1 lda #>px
|
|
0061C2 1 sta MOUSE_X_MSB,X
|
|
0061C2 1 lda #<py
|
|
0061C2 1 sta MOUSE_Y_LSB,X
|
|
0061C2 1 lda #>py
|
|
0061C2 1 sta MOUSE_Y_MSB,X
|
|
0061C2 1 jsr POSMOUSE
|
|
0061C2 1 .endmacro
|
|
0061C2 1
|
|
0061C2 1
|
|
0061C2 1 ;---------------------------------------------------------
|
|
0061C2 1 .proc FINDMOUSE
|
|
0061C2 1 ;---------------------------------------------------------
|
|
0061C2 1 ; Find and initialize the mouse port
|
|
0061C2 1 ;---------------------------------------------------------
|
|
0061C2 1
|
|
0061C2 1 ; Reference: http://home.swbell.net/rubywand/R034MOUSEPRG.TXT
|
|
0061C2 1
|
|
0061C2 1 sei ; No interrupts while we're getting set up
|
|
0061C2 1 ;
|
|
0061C2 1 ; Step 1: Find the mouse card by scanning slots for ID bytes
|
|
0061C2 1 ;
|
|
0061C2 1
|
|
0061C2 1 ldy #MAX_SLOT ; Start search in slot 7
|
|
0061C2 1
|
|
0061C2 1 TESTSLOT:
|
|
0061C2 1 sty MOUSE_SLOT ; Save for later
|
|
0061C2 1 tya
|
|
0061C2 1 clc
|
|
0061C2 1 adc #>SLOT_BASE ; Firmware is $c0 + slot
|
|
0061C2 1 sta MOD_MOUSE_ID + 2 ; Update msb of signature test
|
|
0061C2 1 ldx #MOUSEID_MAX ; This many signature bytes
|
|
0061C2 1
|
|
0061C2 1 TESTID:
|
|
0061C2 1 lda MOUSEID_ADDR,x
|
|
0061C2 1 sta MOD_MOUSE_ID + 1 ; Update lsb of signature test
|
|
0061C2 1 MOD_MOUSE_ID:
|
|
0061C2 1 lda SLOT_BASE
|
|
0061C2 1 cmp MOUSEID_VAL,x ; Does it match the signature?
|
|
0061C2 1 bne NOMATCH ; Nope - try the next slot
|
|
0061C2 1 dex ; Yes! Keep testing
|
|
0061C2 1 bpl TESTID ; Fall through if all done
|
|
0061C2 1 jmp FOUND_MOUSE
|
|
0061C2 1
|
|
0061C2 1 NOMATCH:
|
|
0061C2 1 dey ; Didn't match
|
|
0061C2 1 bne TESTSLOT ; Keep looking until slot 0
|
|
0061C2 1 sty MOUSE_SLOT ; Oops, no mouse - make a note
|
|
0061C2 1 rts ; and bail
|
|
0061C2 1
|
|
0061C2 1 ;
|
|
0061C2 1 ; Step 2: Set up indirect calling routines
|
|
0061C2 1 ;
|
|
0061C2 1
|
|
0061C2 1 FOUND_MOUSE:
|
|
0061C2 1 ; Slot is in y
|
|
0061C2 1
|
|
0061C2 1 tya
|
|
0061C2 1 ora #>SLOT_BASE ; Compute $Cn - needed for
|
|
0061C2 1 sta MOUSEPTR+1 ; MSB of MOUSEPTR ($Cn00)
|
|
0061C2 1 sta TOMOUSE_Cn ; X register before firmware calls
|
|
0061C2 1 sta TOMOUSE_msb ; MSB of firmware calls
|
|
0061C2 1
|
|
0061C2 1 lda #0
|
|
0061C2 1 sta MOUSEPTR ; LSB of MOUSEPTR ($Cn00)
|
|
0061C2 1
|
|
0061C2 1 tya
|
|
0061C2 1 asl ; Compute $n0 - needed for
|
|
0061C2 1 asl
|
|
0061C2 1 asl
|
|
0061C2 1 asl
|
|
0061C2 1 sta TOMOUSE_n0 ; Y register before firmware calls
|
|
0061C2 1
|
|
0061C2 1 ;
|
|
0061C2 1 ; Step 3: Configure the mouse card
|
|
0061C2 1 ;
|
|
0061C2 1
|
|
0061C2 1 ; Initialize the mouse for use
|
|
0061C2 1 jsr INITMOUSE ; reset, clamp to 0-1023 x/y
|
|
0061C2 1 lda #1 ; mouse on, no interrupts
|
|
0061C2 1 jsr SETMOUSE ; TODO: test carry bit result (set = error)
|
|
0061C2 1 ;
|
|
0061C2 1 ; Since we want deltas, clamp and center
|
|
0061C2 1 ;
|
|
0061C2 1 ClampMouse MOUSE_CLAMP_X, MOUSE_MIN_X, MOUSE_MAX_X
|
|
0061C2 1 ClampMouse MOUSE_CLAMP_Y, MOUSE_MIN_Y, MOUSE_MAX_Y
|
|
0061C2 1 PosMouse MOUSE_CENTER_X, MOUSE_CENTER_Y
|
|
0061C2 1
|
|
0061C2 1 cli ; Enable interrupts so mouse can function
|
|
0061C2 1
|
|
0061C2 1 rts
|
|
0061C2 1
|
|
0061C2 1 .endproc
|
|
0061C2 1
|
|
0061C2 1
|
|
0061C2 1 ;--------------------------------------------------
|
|
0061C2 1 ; Indirect jump table for mouse firmware routines
|
|
0061C2 1 ;--------------------------------------------------
|
|
0061C2 1
|
|
0061C2 1 SETMOUSE: ldy #$12
|
|
0061C2 1 jmp GOMOUSE
|
|
0061C2 1 SERVEMOUSE: ldy #$13
|
|
0061C2 1 jmp GOMOUSE
|
|
0061C2 1 READMOUSE: ldy #$14
|
|
0061C2 1 jmp GOMOUSE
|
|
0061C2 1 CLEARMOUSE: ldy #$15
|
|
0061C2 1 jmp GOMOUSE
|
|
0061C2 1 POSMOUSE: ldy #$16
|
|
0061C2 1 jmp GOMOUSE
|
|
0061C2 1 CLAMPMOUSE: ldy #$17
|
|
0061C2 1 jmp GOMOUSE
|
|
0061C2 1 HOMEMOUSE: ldy #$18
|
|
0061C2 1 jmp GOMOUSE
|
|
0061C2 1 INITMOUSE: ldy #$19
|
|
0061C2 1 jmp GOMOUSE
|
|
0061C2 1
|
|
0061C2 1 ;--------------------------------------------------
|
|
0061C2 1 .proc GOMOUSE
|
|
0061C2 1 ;--------------------------------------------------
|
|
0061C2 1 tax ; Preserve the value in A
|
|
0061C2 1 lda (MOUSEPTR),Y ; Get the routine entry point
|
|
0061C2 1 sta TOMOUSE_lsb ; Patch the JMP instruction
|
|
0061C2 1 txa ; Restore the value in A
|
|
0061C2 1 .endproc
|
|
0061C2 1 ; fall through
|
|
0061C2 1
|
|
0061C2 1 ; The following operand bytes must be patched by the
|
|
0061C2 1 ; initialization code which detects the mouse.
|
|
0061C2 1
|
|
0061C2 1 BANK = $C054
|
|
0061C2 1
|
|
0061C2 1 TOMOUSE:
|
|
0061C2 1 ldx #$C1 ; Set up slot in $Cn form in X
|
|
0061C2 1 ldy #$10 ; Set up slot in $n0 form in Y
|
|
0061C2 1 php ; Save interrupt state
|
|
0061C2 1 sei ; No interrupts while calling
|
|
0061C2 1 bit BANK
|
|
0061C2 1 jsr SLOT_BASE ; Go to the mouse routine
|
|
0061C2 1 plp ; Restore interrupt state
|
|
0061C2 1 rts
|
|
0061C2 1
|
|
0061C2 1 TOMOUSE_Cn = TOMOUSE + 1
|
|
0061C2 1 TOMOUSE_n0 = TOMOUSE + 3
|
|
0061C2 1 TOMOUSE_lsb = TOMOUSE + 10
|
|
0061C2 1 TOMOUSE_msb = TOMOUSE + 11
|
|
0061C2 1
|
|
0061C2 1
|
|
0061C2 1 ; TODO: Turn this into a proper delta-sending routine
|
|
0061C2 1
|
|
0061C2 1 ;--------------------------------------------------
|
|
0061C2 1 .proc FOOMOUSE
|
|
0061C2 1 ;--------------------------------------------------
|
|
0061C2 1 ;
|
|
0061C2 1 ;--------------------------------------------------
|
|
0061C2 1 txa ; save x
|
|
0061C2 1 pha
|
|
0061C2 1 tya ; save y
|
|
0061C2 1 pha
|
|
0061C2 1
|
|
0061C2 1 jsr READMOUSE
|
|
0061C2 1
|
|
0061C2 1 jmp DONE
|
|
0061C2 1
|
|
0061C2 1 ldx MOUSE_SLOT
|
|
0061C2 1
|
|
0061C2 1 lda MOUSE_X_LSB,x
|
|
0061C2 1 sta LAST_MX
|
|
0061C2 1
|
|
0061C2 1 lda MOUSE_Y_LSB,x
|
|
0061C2 1 sta LAST_MY
|
|
0061C2 1
|
|
0061C2 1 lda LAST_MX
|
|
0061C2 1 cmp #MOUSE_CENTER_X
|
|
0061C2 1 bne SEND
|
|
0061C2 1
|
|
0061C2 1 lda LAST_MY
|
|
0061C2 1 cmp #MOUSE_CENTER_Y
|
|
0061C2 1 beq DONE
|
|
0061C2 1
|
|
0061C2 1 SEND:
|
|
0061C2 1 lda LAST_MX
|
|
0061C2 1 ora #SIS_MX
|
|
0061C2 1 jsr SSCPUT
|
|
0061C2 1 lda LAST_MY
|
|
0061C2 1 ora #SIS_MY
|
|
0061C2 1 jsr SSCPUT
|
|
0061C2 1
|
|
0061C2 1 PosMouse MOUSE_CENTER_X, MOUSE_CENTER_Y
|
|
0061C2 1
|
|
0061C2 1 DONE:
|
|
0061C2 1 pla ; restore y
|
|
0061C2 1 tay
|
|
0061C2 1 pla ; restore x
|
|
0061C2 1 tax
|
|
0061C2 1 rts
|
|
0061C2 1
|
|
0061C2 1 .endproc
|
|
0061C2 1
|
|
0061C2 1 .endif ; MOUSE_SUPPORT
|
|
0061C2 1
|
|
0061C2 1
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0061C2 1 ;-------------------------------------------------------------------
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0061C2 1 ;
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0061C2 1 ; Lookup Tables and Variable Storage
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0061C2 1 ;
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0061C2 1 ;-------------------------------------------------------------------
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0061C2 1
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0061C2 1 ; Lookup table for UACTRL register, by baud rate
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0061C2 1
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0061C2 1 16 1E 1F 10 BPSCTRL: .byte $16,$1E,$1F,$10 ; 300, 9600, 19200, 115k (with 8 data bits, 1 stop bit, no echo)
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0061C6 1 .enum
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0061C6 1 BPS_300
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0061C6 1 BPS_9600
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0061C6 1 BPS_19200
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0061C6 1 BPS_115k
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0061C6 1 .endenum
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0061C6 1 CMND_NRDI = $0B ; Command: no parity, RTS on, DTR on, no interrupts
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0061C6 1
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0061C6 1
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0061C6 1 ; Application configuration
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0061C6 1 03 PSPEED: .byte BPS_115k ; Hardcoded for Apple IIc (TODO: Allow configuration)
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0061C7 1 02 PSLOT: .byte 2 ; Hardcoded for Apple IIc (TODO: Allow configuration)
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0061C8 1 00 PEXIT: .byte 0 ; Set when it's time to exit (Not Yet Implemented)
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0061C9 1
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0061C9 1
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0061C9 1 ; Keyboard state
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0061C9 1 00 LASTKB: .byte 0
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0061CA 1 00 LASTOA: .byte 0
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0061CB 1 00 LASTCA: .byte 0
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0061CC 1
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0061CC 1 .ifdef PADDLE_SUPPORT
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0061CC 1
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0061CC 1 ; Paddle state
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0061CC 1 00 LASTP0: .byte 0
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0061CD 1 00 LASTP1: .byte 0
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0061CE 1
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0061CE 1 .endif ; PADDLE_SUPPORT
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0061CE 1
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0061CE 1
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0061CE 1 .ifdef MOUSE_SUPPORT
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0061CE 1
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0061CE 1 ; Mouse
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0061CE 1 MOUSE_SLOT: .byte 0 ; mouse slot, or 0 if none
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0061CE 1 LAST_MX: .byte $7f
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0061CE 1 LAST_MY: .byte $7f
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0061CE 1
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0061CE 1 ; Mouse ID bytes
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0061CE 1 MOUSEID_MAX = 4
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0061CE 1 MOUSEID_ADDR: .byte $05, $07, $0b, $0c, $fb
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0061CE 1 MOUSEID_VAL: .byte $38, $18, $01, $20, $d6
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0061CE 1
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0061CE 1 .endif ; MOUSE_SUPPORT
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0061CE 1
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0061CE 1
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