mirror of https://github.com/a2stuff/vnIIc.git
client rewrite
This commit is contained in:
Joshua Bell
parent
5958a851dd
commit
a094909c8c
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@ -16,3 +16,6 @@ Client sends commands:
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* $32 _size=1_ _MOUSEBTN_ mouse button state
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* Screen
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* $80 _size=0_ please send screen; client waits for 8192 byte buffer
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Switch mouse to be signed 8-bit deltax, deltay ?
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Binary file not shown.
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@ -116,10 +116,10 @@ Current file: client.s
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000000r 1 ;;; ROM routines
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000000r 1 ;;;---------------------------------------------------------
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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 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 HCLR := $F3F2 ; Clear current hires screen to black
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000000r 1 HCLR := $F3F2 ; Clear current hires screen to black
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000000r 1
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000000r 1 ;;;---------------------------------------------------------
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000000r 1 ;;; Other
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@ -129,6 +129,26 @@ Current file: client.s
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000000r 1
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000000r 1 ZP_PTR := $FA ; Write cursor location on zero page
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000000r 1
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000000r 1 ;;;-------------------------------------------------------------------
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000000r 1 ;;; Protocol:
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000000r 1 ;;;-------------------------------------------------------------------
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000000r 1
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000000r 1 .proc Protocol
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000000r 1 Keyboard := $00
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000000r 1
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000000r 1 Button0 := $10
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000000r 1 Button1 := $11
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000000r 1
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000000r 1 Paddle0 := $20
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000000r 1 Paddle1 := $21
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000000r 1
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000000r 1 MouseX := $30
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000000r 1 MouseY := $31
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000000r 1 MouseBtn := $32
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000000r 1
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000000r 1 Screen := $80
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000000r 1 .endproc
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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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@ -137,7 +157,7 @@ Current file: client.s
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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 4C 60 60 jmp AppEntry
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006000 1 4C 5B 60 jmp AppEntry
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006003 1
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006003 1 .include "ssc.inc"
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006003 2 ;;;-------------------------------------------------------------------
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@ -273,375 +293,280 @@ Current file: client.s
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006059 1 02 PSLOT: .byte 2 ; Hardcoded for Apple IIc (TODO: Allow configuration)
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00605A 1 00 PEXIT: .byte 0 ; Set when it's time to exit (Not Yet Implemented)
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00605B 1
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00605B 1 ;;; Keyboard state
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00605B 1 00 LASTKB: .byte 0
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00605C 1 00 LASTOA: .byte 0
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00605D 1 00 LASTCA: .byte 0
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00605E 1
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00605E 1 .ifdef PADDLE_SUPPORT
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00605E 1
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00605E 1 ;;; Paddle state
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00605E 1 00 LASTP0: .byte 0
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00605F 1 00 LASTP1: .byte 0
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006060 1
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006060 1 .endif ; PADDLE_SUPPORT
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006060 1
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006060 1
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006060 1 ;;;---------------------------------------------------------
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006060 1 ;;; Initialize the application, and enter the main loop
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006060 1
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006060 1 .proc AppEntry
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006060 1 AD 59 60 lda PSLOT ; Use slot 2
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006063 1 20 07 60 jsr SSC::Init ; Initialize Super Serial Card
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006066 1 20 8C 61 jsr InitHires ; Initialize Hi-Res graphics
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006069 1 20 A0 60 jsr InitInput ; Initialize input devices
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00606C 1 20 79 60 jsr MainLoop
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00606F 1
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00606F 1 ; fall through
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00606F 1 .endproc
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00606F 1
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00606F 1 ;;;---------------------------------------------------------
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00606F 1 ;;; Clean up and exit app
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00606F 1
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00606F 1 .proc AppExit
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00606F 1 20 54 60 jsr SSC::Reset
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006072 1 8D 54 C0 sta LOWSCR
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006075 1 8D 51 C0 sta TXTSET
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006078 1 60 rts
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006079 1 .endproc
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006079 1
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006079 1
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006079 1 ;;;-------------------------------------------------------------------
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006079 1 ;;;
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006079 1 ;;; Main loop functionality
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006079 1 ;;;
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006079 1 ;;;-------------------------------------------------------------------
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006079 1
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006079 1
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006079 1 ;;;---------------------------------------------------------
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006079 1 .proc MainLoop
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006079 1
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006079 1 ;;; TODO: Sort out the protocol - should be able to send
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006079 1 ;;; input state without receiving data
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006079 1 ;;; jsr SSC::HasData ; Anything to read?
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006079 1 ;;; bne :+ ; Nope
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006079 1
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006079 1 20 83 60 : jsr ReceivePage
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00607C 1 20 A3 61 jsr FlipHires
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00607F 1 4C 79 60 jmp :- ; TODO: define an exit trigger
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006082 1 60 rts
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006083 1 .endproc
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006083 1
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006083 1
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006083 1 ;;;---------------------------------------------------------
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006083 1 ;;; Pull a hi-res page down over serial
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006083 1 ;;;
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006083 1 ;;; Protocol is:
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006083 1 ;;; * Recieve 256 bytes (graphic data)
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006083 1 ;;; * Send 1 byte (input state)
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006083 1
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006083 1 .proc ReceivePage
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006083 1 A9 00 lda #0 ; set up write pointer
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006085 1 85 FA sta ZP_PTR
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006087 1 A5 E6 lda PAGE
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006089 1 85 FB sta ZP_PTR+1
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00608B 1 A2 20 ldx #PAGESIZE ; plan to receive this many pages
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00608D 1 A0 00 ldy #0
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00608F 1
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00608F 1 20 3F 60 : jsr SSC::Get ; TODO: look for escape codes in the sequence
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006092 1 91 FA sta (ZP_PTR),Y
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006094 1 C8 iny
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006095 1 D0 F8 bne :- ; Do a full page...
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006097 1
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006097 1 20 BE 60 jsr SendInputState ; brief moment to send data back upstream
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00609A 1
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00609A 1 E6 FB inc ZP_PTR+1
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00609C 1 CA dex
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00609D 1 D0 F0 bne :- ; ...as many pages as we need
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00609F 1 60 rts
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0060A0 1 .endproc
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0060A0 1
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0060A0 1
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0060A0 1 ;;;-------------------------------------------------------------------
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0060A0 1 ;;;
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0060A0 1 ;;; Input device routines
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0060A0 1 ;;;
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0060A0 1 ;;;-------------------------------------------------------------------
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0060A0 1 ;;; Protocol:
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0060A0 1 ;;; $7f - $ff - key down, ASCII code + $80
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0060A0 1 ;;; otherwise, a transition:
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0060A0 1 ;;;
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0060A0 1 SIS_KBUP = $00 ; Key up
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0060A0 1 SIS_OADOWN = $01 ; Open Apple transitioned to down
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0060A0 1 SIS_OAUP = $02 ; Open Apple transitioned to up
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0060A0 1 SIS_CADOWN = $03 ; Closed Apple transitioned to down
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0060A0 1 SIS_CAUP = $04 ; Closed Apple transitioned to up
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0060A0 1 ;;;
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0060A0 1 ;;; $05 - $0f : reserved
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0060A0 1 ;;;
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0060A0 1 SIS_MX = $10 ; Mouse X high nibble
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0060A0 1 SIS_MY = $20 ; Mouse Y high nibble
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0060A0 1 SIS_PDL0 = $30 ; Paddle 0 high nibble
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0060A0 1 SIS_PDL1 = $40 ; Paddle 1 high nibble
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0060A0 1 ;;;
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0060A0 1 ;;; $50 - $7e : reserved
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0060A0 1 ;;;
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0060A0 1 SIS_SYNC = $7f
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0060A0 1
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0060A0 1 ;;;---------------------------------------------------------
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0060A0 1 ;;; Initialize input devices and storage for detecting
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0060A0 1 ;;; state transitions
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0060A0 1
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0060A0 1 .proc InitInput
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0060A0 1
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0060A0 1 ;;; Init keyboard state
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0060A0 1 A9 00 lda #SIS_KBUP
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0060A2 1 8D 5B 60 sta LASTKB
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00605B 1
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00605B 1 ;;;---------------------------------------------------------
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00605B 1 ;;; Initialize the application, and enter the main loop
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00605B 1
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00605B 1 .proc AppEntry
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00605B 1 AD 59 60 lda PSLOT ; Use slot 2
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00605E 1 20 07 60 jsr SSC::Init ; Initialize Super Serial Card
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006061 1 20 2B 61 jsr InitHires ; Initialize Hi-Res graphics
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006064 1 20 A5 60 jsr InitInput ; Initialize input devices
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006067 1 20 74 60 jsr MainLoop
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00606A 1 ;; fall through
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00606A 1 .endproc
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00606A 1
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00606A 1 ;;;---------------------------------------------------------
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00606A 1 ;;; Clean up and exit app
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00606A 1
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00606A 1 .proc AppExit
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00606A 1 20 54 60 jsr SSC::Reset
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00606D 1 8D 54 C0 sta LOWSCR
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006070 1 8D 51 C0 sta TXTSET
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006073 1 60 rts
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006074 1 .endproc
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006074 1
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006074 1 ;;;-------------------------------------------------------------------
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006074 1 ;;;
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006074 1 ;;; Main loop functionality
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006074 1 ;;;
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006074 1 ;;;-------------------------------------------------------------------
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006074 1
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006074 1
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006074 1 ;;;---------------------------------------------------------
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006074 1 .proc MainLoop
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006074 1
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006074 1 ;;; TODO: Sort out the protocol - should be able to send
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006074 1 ;;; input state without receiving data
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006074 1 ;;; jsr SSC::HasData ; Anything to read?
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006074 1 ;;; bne :+ ; Nope
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006074 1
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006074 1 20 7E 60 : jsr ReceivePage
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006077 1 ;; Input is sent every 256 bytes (32 times per page)
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006077 1 20 42 61 jsr FlipHires
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00607A 1
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00607A 1 4C 74 60 jmp :- ; TODO: define an exit trigger
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00607D 1 60 rts
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00607E 1 .endproc
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00607E 1
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00607E 1
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00607E 1 ;;;---------------------------------------------------------
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00607E 1 ;;; Pull a hi-res page down over serial
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00607E 1 ;;;
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00607E 1 ;;; Protocol is:
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00607E 1 ;;; * Recieve 256 bytes (graphic data)
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00607E 1 ;;; * Send 1 byte (input state)
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00607E 1
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00607E 1 .proc ReceivePage
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00607E 1 A9 80 lda #Protocol::Screen
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006080 1 20 30 60 jsr SSC::Put
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006083 1 A9 00 lda #0 ; data size
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006085 1 20 30 60 jsr SSC::Put
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006088 1
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006088 1
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006088 1 A9 00 lda #0 ; set up write pointer
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00608A 1 85 FA sta ZP_PTR
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00608C 1 A5 E6 lda PAGE
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00608E 1 85 FB sta ZP_PTR+1
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006090 1 A2 20 ldx #PAGESIZE ; plan to receive this many pages
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006092 1 A0 00 ldy #0
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006094 1
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006094 1 20 3F 60 : jsr SSC::Get
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006097 1 91 FA sta (ZP_PTR),Y
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006099 1 C8 iny
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00609A 1 D0 F8 bne :- ; Do a full page...
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00609C 1
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00609C 1 ;; Interleave to maintain responsiveness
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00609C 1 20 A6 60 jsr SendInputState
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00609F 1
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00609F 1 E6 FB inc ZP_PTR+1
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0060A1 1 CA dex
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0060A2 1 D0 F0 bne :- ; ...as many pages as we need
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0060A4 1 60 rts
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0060A5 1 .endproc
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0060A5 1
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0060A5 1 ;;; Init Open/Closed Apple states
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0060A5 1 A9 02 lda #SIS_OAUP ; NOTE: Don't store OA state as it fluctuates
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0060A7 1 8D 5C 60 sta LASTOA
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0060AA 1 A9 04 lda #SIS_CAUP ; NOTE: Don't store CA state as it fluctuates
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0060AC 1 8D 5D 60 sta LASTCA
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0060A5 1
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0060A5 1 ;;;-------------------------------------------------------------------
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0060A5 1 ;;;
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0060A5 1 ;;; Input device routines
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0060A5 1 ;;;
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0060A5 1 ;;;-------------------------------------------------------------------
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0060A5 1
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0060A5 1 ;;;---------------------------------------------------------
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0060A5 1 ;;; Initialize input devices and storage for detecting
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0060A5 1 ;;; state transitions
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0060A5 1
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0060A5 1 .proc InitInput
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0060A5 1
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0060A5 1 .ifdef MOUSE_SUPPORT
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0060A5 1 jsr Mouse::FindMouse
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0060A5 1 .endif
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0060A5 1
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0060A5 1 60 rts
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0060A6 1 .endproc
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0060A6 1
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0060A6 1
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0060A6 1 ;;;---------------------------------------------------------
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0060A6 1 ;;; Send a full set of input state updates.
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0060A6 1
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0060A6 1 ;;; Assumes time to transmit is roughly comparable to time
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0060A6 1 ;;; to measure input state, therefore only sending changes is
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0060A6 1 ;;; not worthwhile in most cases.
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0060A6 1
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0060A6 1 .proc SendInputState
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0060A6 1 20 B0 60 jsr MaybeSendKeyboard
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0060A9 1 20 E3 60 jsr SendButtons
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0060AC 1
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0060AC 1 .ifdef PADDLE_SUPPORT
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0060AC 1 20 04 61 jsr SendPaddles
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0060AF 1 .endif
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0060AF 1
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0060AF 1 .ifdef PADDLE_SUPPORT
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0060AF 1 ;;; Init Paddle state
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0060AF 1 A9 30 lda #SIS_PDL0
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0060B1 1 09 08 ora #8 ; Middle of range 0...15
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0060B3 1 8D 5E 60 sta LASTP0
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0060B6 1 A9 40 lda #SIS_PDL1
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0060B8 1 09 08 ora #8 ; Middle of range 0...15
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0060BA 1 8D 5F 60 sta LASTP1
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0060BD 1 .endif
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0060AF 1 .ifdef MOUSE_SUPPORT
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0060AF 1 jsr SendMouse
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0060AF 1 .endif
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0060AF 1
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0060AF 1 .endproc
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0060AF 1
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0060AF 1
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0060AF 1 ;;;------------------------------------------------------------
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0060AF 1 ;;; Keyboard
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0060AF 1
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0060AF 1 ;;; NOTE: Can't use KBDSTRB to detect key up -> key down transition
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0060AF 1 ;;; since the msb can change before the key code. Instead, consider
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0060AF 1 ;;; these cases:
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0060AF 1 ;;;
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0060AF 1 ;;; OLD STATE KBD KBDSTRB RESULT
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0060AF 1 ;;; Up Up - No-op
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0060AF 1 ;;; Up Down - Save and send key down
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0060AF 1 ;;; Down - Up Save and send key up
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0060AF 1 ;;; Down - Down Save and send key ONLY if different
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0060AF 1 ;;;
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0060AF 1
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0060AF 1 00 last_kb: .byte 0
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0060B0 1
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0060B0 1 .proc MaybeSendKeyboard
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0060B0 1 AD AF 60 lda last_kb
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0060B3 1 D0 08 bne key_was_down
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0060B5 1
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0060B5 1 key_was_up:
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0060B5 1 ;; Key was up - send only if now down.
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0060B5 1 AD 00 C0 lda KBD ; Read keyboard
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0060B8 1 10 28 bpl done ; Do nothing if it is still up.
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0060BA 1 4C CF 60 jmp send ; Otherwise send.
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0060BD 1
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0060BD 1 .ifdef MOUSE_SUPPORT
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0060BD 1 jsr Mouse::FindMouse
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0060BD 1 .endif
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0060BD 1
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0060BD 1 60 rts
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0060BE 1 .endproc
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0060BE 1
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0060BE 1
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0060BE 1 ;;;---------------------------------------------------------
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0060BE 1 ;;; Send keyboard joystick and/or mouse state over the
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0060BE 1 ;;; serial port
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0060BE 1 ;;;
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0060BE 1 ;;; Algorithm:
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0060BE 1 ;;; - Send key state (if it changed)
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0060BE 1 ;;; - otherwise send open-apple state (if it changed)
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0060BE 1 ;;; - otherwise send closed-apple state (if it changed)
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0060BE 1 ;;; - otherwise send paddle 0 state (if it changed)
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0060BE 1 ;;; - (TODO: Mouse state)
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0060BE 1 ;;; - otherwise send sync byte
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0060BE 1
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0060BE 1 .proc SendInputState
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0060BE 1
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0060BE 1 48 8A 48 98 SaveRegisters ; Store registers
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0060C2 1 48
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0060C3 1 18 clc
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0060C4 1
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0060C4 1 ;;;--------------------------------------
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0060C4 1 ;;; Send key state, if it changed
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0060C4 1
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0060C4 1 ;;; NOTE: Can't use KBDSTRB to detect key up -> key down transition
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0060C4 1 ;;; since the msb can change before the key code. Instead, consider
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0060C4 1 ;;; these cases:
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0060C4 1 ;;;
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0060C4 1 ;;; OLD STATE KBD KBDSTRB RESULT
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0060C4 1 ;;; Up Up - No-op
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0060C4 1 ;;; Up Down - Save and send key down
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0060C4 1 ;;; Down - Up Save and send key up
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0060C4 1 ;;; Down - Down Save and send key ONLY if different
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0060C4 1 ;;;
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0060C4 1
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0060C4 1 AD 5B 60 lda LASTKB
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0060C7 1 D0 0E bne KEY_WAS_DOWN
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0060C9 1
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0060C9 1 KEY_WAS_UP:
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0060C9 1 AD 00 C0 lda KBD ; Read keyboard
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0060CC 1 10 27 bpl END_KEY ; - still up
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0060CE 1 8D 5B 60 sta LASTKB ; Down, so save it
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0060D1 1 20 30 60 jsr SSC::Put ; and send it
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0060D4 1 4C 86 61 jmp DONE
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0060D7 1
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0060D7 1 KEY_WAS_DOWN:
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0060D7 1 ; key was down - strobe should match
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0060D7 1 ; unless the key changed or was released
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0060D7 1 AD 10 C0 lda KBDSTRB
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0060DA 1 30 0B bmi KBDSTRB_DOWN
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0060DC 1 KBDSTRB_UP:
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0060DC 1 A9 00 lda #SIS_KBUP ; Key was released
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0060DE 1 8D 5B 60 sta LASTKB ; so save it
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0060E1 1 20 30 60 jsr SSC::Put ; and send it
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0060E4 1 4C 86 61 jmp DONE
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0060E7 1 KBDSTRB_DOWN:
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0060E7 1 CD 5B 60 cmp LASTKB ; Same key as last time?
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0060EA 1 F0 09 beq END_KEY ; - no change
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0060EC 1 8D 5B 60 sta LASTKB ; New key, so save it
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0060EF 1 20 30 60 jsr SSC::Put ; and send it
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0060F2 1 4C 86 61 jmp DONE
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0060F5 1
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0060F5 1 END_KEY:
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0060F5 1
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0060F5 1 ;;;--------------------------------------
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0060F5 1 ;;; Send Open Apple state, if it changed
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0060F5 1
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0060F5 1 ;;; TODO: Can simplify this code if we make the high bits the same
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0060F5 1 ;;; for both OA states and bit = 0 down: lda BUTN0 ; ROL ; LDA #0 ; ROL ; ORA #signature
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0060F5 1
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0060F5 1 TEST_OA:
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0060F5 1 AD 61 C0 lda BUTN0 ; Test Open Apple state
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0060F8 1 30 10 bmi OA_IS_DOWN
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0060FA 1 OA_IS_UP:
|
||||
0060FA 1 A9 02 lda #SIS_OAUP
|
||||
0060FC 1 CD 5C 60 cmp LASTOA ; Changed?
|
||||
0060FF 1 F0 19 beq END_OA ; Nope
|
||||
006101 1 8D 5C 60 sta LASTOA ; Yes, save it / send it!
|
||||
006104 1 20 30 60 jsr SSC::Put
|
||||
006107 1 4C 86 61 jmp DONE
|
||||
00610A 1 OA_IS_DOWN:
|
||||
00610A 1 A9 01 lda #SIS_OADOWN
|
||||
00610C 1 CD 5C 60 cmp LASTOA ; Changed?
|
||||
00610F 1 F0 09 beq END_OA ; Nope
|
||||
006111 1 8D 5C 60 sta LASTOA ; Yes, save it / send it!
|
||||
0060BD 1 key_was_down:
|
||||
0060BD 1 ;; Key was down - strobe should match
|
||||
0060BD 1 ;; unless the key changed or was released.
|
||||
0060BD 1 AD 10 C0 lda KBDSTRB
|
||||
0060C0 1 30 05 bmi kbdstrb_down
|
||||
0060C2 1
|
||||
0060C2 1 kbdstrb_up:
|
||||
0060C2 1 A9 00 lda #0 ; Now released
|
||||
0060C4 1 4C CF 60 jmp send
|
||||
0060C7 1
|
||||
0060C7 1 kbdstrb_down:
|
||||
0060C7 1 CD AF 60 cmp last_kb ; Same key as last time?
|
||||
0060CA 1 F0 16 beq done ; - no change, don't send.
|
||||
0060CC 1 4C CF 60 jmp send
|
||||
0060CF 1
|
||||
0060CF 1 8D AF 60 send: sta last_kb
|
||||
0060D2 1 A5 00 lda Protocol::Keyboard
|
||||
0060D4 1 20 30 60 jsr SSC::Put
|
||||
0060D7 1 A9 01 lda #1 ; Data size
|
||||
0060D9 1 20 30 60 jsr SSC::Put
|
||||
0060DC 1 AD AF 60 lda last_kb
|
||||
0060DF 1 20 30 60 jsr SSC::Put
|
||||
0060E2 1
|
||||
0060E2 1 60 done: rts
|
||||
0060E3 1 .endproc
|
||||
0060E3 1
|
||||
0060E3 1 ;;;------------------------------------------------------------
|
||||
0060E3 1 ;;; Buttons
|
||||
0060E3 1
|
||||
0060E3 1 .proc SendButtons
|
||||
0060E3 1
|
||||
0060E3 1 A5 10 lda Protocol::Button0
|
||||
0060E5 1 20 30 60 jsr SSC::Put
|
||||
0060E8 1 A9 01 lda #1 ; Data size
|
||||
0060EA 1 20 30 60 jsr SSC::Put
|
||||
0060ED 1 AD 61 C0 lda BUTN0
|
||||
0060F0 1 20 30 60 jsr SSC::Put
|
||||
0060F3 1
|
||||
0060F3 1 A5 11 lda Protocol::Button1
|
||||
0060F5 1 20 30 60 jsr SSC::Put
|
||||
0060F8 1 A9 01 lda #1 ; Data size
|
||||
0060FA 1 20 30 60 jsr SSC::Put
|
||||
0060FD 1 AD 62 C0 lda BUTN1
|
||||
006100 1 20 30 60 jsr SSC::Put
|
||||
006103 1
|
||||
006103 1 60 rts
|
||||
006104 1 .endproc
|
||||
006104 1
|
||||
006104 1 ;;;------------------------------------------------------------
|
||||
006104 1 ;;; Paddles
|
||||
006104 1
|
||||
006104 1 .ifdef PADDLE_SUPPORT
|
||||
006104 1 .proc SendPaddles
|
||||
006104 1
|
||||
006104 1 A5 20 lda Protocol::Paddle0
|
||||
006106 1 20 30 60 jsr SSC::Put
|
||||
006109 1 A9 01 lda #1 ; Data size
|
||||
00610B 1 20 30 60 jsr SSC::Put
|
||||
00610E 1
|
||||
00610E 1 A2 00 ldx #0
|
||||
006110 1 20 1E FB jsr PREAD
|
||||
006113 1 98 tya
|
||||
006114 1 20 30 60 jsr SSC::Put
|
||||
006117 1 4C 86 61 jmp DONE
|
||||
00611A 1
|
||||
00611A 1 END_OA:
|
||||
00611A 1
|
||||
00611A 1 ;;;--------------------------------------
|
||||
00611A 1 ;;; Send Closed Apple state, if it changed
|
||||
00611A 1
|
||||
00611A 1 TEST_CA:
|
||||
00611A 1 AD 62 C0 lda BUTN1 ; Has the Open Apple/Button 1 value changed?
|
||||
00611D 1 30 10 bmi CA_IS_DOWN
|
||||
00611F 1 CA_IS_UP:
|
||||
00611F 1 A9 04 lda #SIS_CAUP
|
||||
006121 1 CD 5D 60 cmp LASTCA ; Changed?
|
||||
006124 1 F0 19 beq END_CA ; Nope
|
||||
006126 1 8D 5D 60 sta LASTCA ; Yes, save it
|
||||
006129 1 20 30 60 jsr SSC::Put ; and send it
|
||||
00612C 1 4C 86 61 jmp DONE
|
||||
00612F 1 CA_IS_DOWN:
|
||||
00612F 1 A9 03 lda #SIS_CADOWN
|
||||
006131 1 CD 5D 60 cmp LASTCA ; Changed?
|
||||
006134 1 F0 09 beq END_CA ; Nope
|
||||
006136 1 8D 5D 60 sta LASTCA ; Yes, save it
|
||||
006139 1 20 30 60 jsr SSC::Put ; and send it
|
||||
00613C 1 4C 86 61 jmp DONE
|
||||
00613F 1
|
||||
00613F 1 END_CA:
|
||||
00613F 1
|
||||
00613F 1 .ifdef PADDLE_SUPPORT
|
||||
00613F 1
|
||||
00613F 1 ;;;--------------------------------------
|
||||
00613F 1 ;;; Send Paddle 0 state, if it changed
|
||||
00613F 1 TEST_PDL0:
|
||||
00613F 1 A2 00 ldx #0
|
||||
006141 1 20 1E FB jsr PREAD
|
||||
006144 1 98 tya
|
||||
006145 1 4A lsr ; Shift to low nibble
|
||||
006146 1 4A lsr
|
||||
006147 1 4A lsr
|
||||
006148 1 4A lsr
|
||||
006149 1 09 30 ora #SIS_PDL0 ; And mark it with the signature
|
||||
00614B 1 CD 5E 60 cmp LASTP0 ; Change?
|
||||
00614E 1 F0 09 beq END_PDL0 ; Nope
|
||||
006150 1 8D 5E 60 sta LASTP0 ; Yes, save it
|
||||
006153 1 20 30 60 jsr SSC::Put ; and send it
|
||||
006156 1 4C 86 61 jmp DONE
|
||||
006159 1 END_PDL0:
|
||||
006159 1 ; Chew up time so next paddle read will be correct
|
||||
006159 1 ; TODO: Replace this with a "read both" strobes
|
||||
006159 1 ; routine
|
||||
006159 1 EA EA EA EA : .repeat 11 ; By experiment, need 11 NOPs.
|
||||
00615D 1 EA EA EA EA
|
||||
006161 1 EA EA EA
|
||||
006164 1 nop
|
||||
006164 1 .endrep
|
||||
006164 1 C8 iny
|
||||
006165 1 D0 F2 bne :-
|
||||
006167 1
|
||||
006167 1 ;;;--------------------------------------
|
||||
006167 1 ;;; Send Paddle 1 state, if it changed
|
||||
006167 1 TEST_PDL1:
|
||||
006167 1 A2 01 ldx #1
|
||||
006169 1 20 1E FB jsr PREAD
|
||||
00616C 1 98 tya
|
||||
00616D 1 4A lsr ; Shift to low nibble
|
||||
00616E 1 4A lsr
|
||||
00616F 1 4A lsr
|
||||
006170 1 4A lsr
|
||||
006171 1 09 40 ora #SIS_PDL1 ; And mark it with the signature
|
||||
006173 1 CD 5F 60 cmp LASTP1 ; Change?
|
||||
006176 1 F0 09 beq END_PDL1 ; Nope
|
||||
006178 1 8D 5F 60 sta LASTP1 ; Yes, save it
|
||||
00617B 1 20 30 60 jsr SSC::Put ; and send it
|
||||
00617E 1 4C 86 61 jmp DONE
|
||||
006181 1 END_PDL1:
|
||||
006181 1 ; NOTE: No need to chew time like PDL0
|
||||
006181 1 ; since data receive will make up for it; if we
|
||||
006181 1 ; loop in SendInputState need to add it here
|
||||
006181 1
|
||||
006181 1 .endif
|
||||
006181 1
|
||||
006181 1
|
||||
006181 1 ;;;--------------------------------------
|
||||
006181 1 ;;; No state changes so send sync byte
|
||||
006181 1
|
||||
006181 1 A9 7F lda #SIS_SYNC
|
||||
006183 1 20 30 60 jsr SSC::Put
|
||||
006186 1
|
||||
006186 1 DONE:
|
||||
006186 1 68 A8 68 AA RestoreRegisters
|
||||
00618A 1 68
|
||||
00618B 1 60 rts
|
||||
00618C 1
|
||||
00618C 1 .endproc
|
||||
00618C 1
|
||||
00618C 1
|
||||
00618C 1 ;;;-------------------------------------------------------------------
|
||||
00618C 1 ;;;
|
||||
00618C 1 ;;; Hi-res graphics routines
|
||||
00618C 1 ;;;
|
||||
00618C 1 ;;;-------------------------------------------------------------------
|
||||
00618C 1
|
||||
00618C 1 ;;;---------------------------------------------------------
|
||||
00618C 1 ;;; Set up the graphics display and pointers
|
||||
00618C 1
|
||||
00618C 1 .proc InitHires
|
||||
00618C 1 A9 20 lda #PAGE1 ; clear page 1
|
||||
00618E 1 85 E6 sta PAGE
|
||||
006190 1 20 F2 F3 jsr HCLR
|
||||
006193 1
|
||||
006193 1 20 A3 61 jsr FlipHires ; then show it and flip to 2
|
||||
006196 1 8D 57 C0 sta HIRES
|
||||
006199 1 8D 50 C0 sta TXTCLR
|
||||
00619C 1 8D 52 C0 sta MIXCLR
|
||||
00619F 1 8D 54 C0 sta LOWSCR
|
||||
0061A2 1
|
||||
0061A2 1 60 rts
|
||||
0061A3 1 .endproc
|
||||
0061A3 1
|
||||
0061A3 1
|
||||
0061A3 1 ;;;---------------------------------------------------------
|
||||
0061A3 1 ;;; Call when done with the current plotting page
|
||||
0061A3 1 ;;; (selected in PAGE) and it will be shown and the
|
||||
0061A3 1 ;;; other page will be shown.
|
||||
0061A3 1
|
||||
0061A3 1 .proc FlipHires
|
||||
0061A3 1 A5 E6 lda PAGE ; plotting on which page?
|
||||
0061A5 1 C9 20 cmp #PAGE1
|
||||
0061A7 1 F0 08 beq :+
|
||||
0061A9 1
|
||||
0061A9 1 8D 55 C0 sta HISCR ; page 2 - so show it
|
||||
0061AC 1 A9 20 lda #PAGE1 ; and plot on page 1
|
||||
0061AE 1 85 E6 sta PAGE
|
||||
0061B0 1 60 rts
|
||||
0061B1 1
|
||||
0061B1 1 8D 54 C0 : sta LOWSCR ; page 1 - so show it
|
||||
0061B4 1 A9 40 lda #PAGE2 ; and plot on page 2
|
||||
0061B6 1 85 E6 sta PAGE
|
||||
0061B8 1 60 rts
|
||||
0061B9 1 .endproc
|
||||
0061B9 1
|
||||
006117 1
|
||||
006117 1 ;; Assumes at least 11 cycles to send, so
|
||||
006117 1 ;; timer has a chance to reset.
|
||||
006117 1
|
||||
006117 1 A5 21 lda Protocol::Paddle1
|
||||
006119 1 20 30 60 jsr SSC::Put
|
||||
00611C 1 A9 01 lda #1 ; Data size
|
||||
00611E 1 20 30 60 jsr SSC::Put
|
||||
006121 1
|
||||
006121 1 A2 01 ldx #1
|
||||
006123 1 20 1E FB jsr PREAD
|
||||
006126 1 98 tya
|
||||
006127 1 20 30 60 jsr SSC::Put
|
||||
00612A 1
|
||||
00612A 1 60 rts
|
||||
00612B 1 .endproc
|
||||
00612B 1 .endif
|
||||
00612B 1
|
||||
00612B 1 ;;;-------------------------------------------------------------------
|
||||
00612B 1 ;;;
|
||||
00612B 1 ;;; Hi-res graphics routines
|
||||
00612B 1 ;;;
|
||||
00612B 1 ;;;-------------------------------------------------------------------
|
||||
00612B 1
|
||||
00612B 1 ;;;---------------------------------------------------------
|
||||
00612B 1 ;;; Set up the graphics display and pointers
|
||||
00612B 1
|
||||
00612B 1 .proc InitHires
|
||||
00612B 1 A9 20 lda #PAGE1 ; clear page 1
|
||||
00612D 1 85 E6 sta PAGE
|
||||
00612F 1 20 F2 F3 jsr HCLR
|
||||
006132 1
|
||||
006132 1 20 42 61 jsr FlipHires ; then show it and flip to 2
|
||||
006135 1 8D 57 C0 sta HIRES
|
||||
006138 1 8D 50 C0 sta TXTCLR
|
||||
00613B 1 8D 52 C0 sta MIXCLR
|
||||
00613E 1 8D 54 C0 sta LOWSCR
|
||||
006141 1
|
||||
006141 1 60 rts
|
||||
006142 1 .endproc
|
||||
006142 1
|
||||
006142 1
|
||||
006142 1 ;;;---------------------------------------------------------
|
||||
006142 1 ;;; Call when done with the current plotting page
|
||||
006142 1 ;;; (selected in PAGE) and it will be shown and the
|
||||
006142 1 ;;; other page will be shown.
|
||||
006142 1
|
||||
006142 1 .proc FlipHires
|
||||
006142 1 A5 E6 lda PAGE ; plotting on which page?
|
||||
006144 1 C9 20 cmp #PAGE1
|
||||
006146 1 F0 08 beq :+
|
||||
006148 1
|
||||
006148 1 8D 55 C0 sta HISCR ; page 2 - so show it
|
||||
00614B 1 A9 20 lda #PAGE1 ; and plot on page 1
|
||||
00614D 1 85 E6 sta PAGE
|
||||
00614F 1 60 rts
|
||||
006150 1
|
||||
006150 1 8D 54 C0 : sta LOWSCR ; page 1 - so show it
|
||||
006153 1 A9 40 lda #PAGE2 ; and plot on page 2
|
||||
006155 1 85 E6 sta PAGE
|
||||
006157 1 60 rts
|
||||
006158 1 .endproc
|
||||
006158 1
|
||||
|
|
|
|||
303
client/client.s
303
client/client.s
|
|
@ -38,6 +38,26 @@ MAX_SLOT := 7 ; Maximum slot # on an Apple II
|
|||
|
||||
ZP_PTR := $FA ; Write cursor location on zero page
|
||||
|
||||
;;;-------------------------------------------------------------------
|
||||
;;; Protocol:
|
||||
;;;-------------------------------------------------------------------
|
||||
|
||||
.proc Protocol
|
||||
Keyboard := $00
|
||||
|
||||
Button0 := $10
|
||||
Button1 := $11
|
||||
|
||||
Paddle0 := $20
|
||||
Paddle1 := $21
|
||||
|
||||
MouseX := $30
|
||||
MouseY := $31
|
||||
MouseBtn := $32
|
||||
|
||||
Screen := $80
|
||||
.endproc
|
||||
|
||||
|
||||
;;;-------------------------------------------------------------------
|
||||
;;;
|
||||
|
|
@ -64,19 +84,6 @@ PSPEED: .byte SSC::BPS_115k ; Hardcoded for Apple IIc (TODO: Allow configura
|
|||
PSLOT: .byte 2 ; Hardcoded for Apple IIc (TODO: Allow configuration)
|
||||
PEXIT: .byte 0 ; Set when it's time to exit (Not Yet Implemented)
|
||||
|
||||
;;; Keyboard state
|
||||
LASTKB: .byte 0
|
||||
LASTOA: .byte 0
|
||||
LASTCA: .byte 0
|
||||
|
||||
.ifdef PADDLE_SUPPORT
|
||||
|
||||
;;; Paddle state
|
||||
LASTP0: .byte 0
|
||||
LASTP1: .byte 0
|
||||
|
||||
.endif ; PADDLE_SUPPORT
|
||||
|
||||
|
||||
;;;---------------------------------------------------------
|
||||
;;; Initialize the application, and enter the main loop
|
||||
|
|
@ -87,8 +94,7 @@ LASTP1: .byte 0
|
|||
jsr InitHires ; Initialize Hi-Res graphics
|
||||
jsr InitInput ; Initialize input devices
|
||||
jsr MainLoop
|
||||
|
||||
; fall through
|
||||
;; fall through
|
||||
.endproc
|
||||
|
||||
;;;---------------------------------------------------------
|
||||
|
|
@ -101,7 +107,6 @@ LASTP1: .byte 0
|
|||
rts
|
||||
.endproc
|
||||
|
||||
|
||||
;;;-------------------------------------------------------------------
|
||||
;;;
|
||||
;;; Main loop functionality
|
||||
|
|
@ -118,7 +123,9 @@ LASTP1: .byte 0
|
|||
;;; bne :+ ; Nope
|
||||
|
||||
: jsr ReceivePage
|
||||
;; Input is sent every 256 bytes (32 times per page)
|
||||
jsr FlipHires
|
||||
|
||||
jmp :- ; TODO: define an exit trigger
|
||||
rts
|
||||
.endproc
|
||||
|
|
@ -132,6 +139,12 @@ LASTP1: .byte 0
|
|||
;;; * Send 1 byte (input state)
|
||||
|
||||
.proc ReceivePage
|
||||
lda #Protocol::Screen
|
||||
jsr SSC::Put
|
||||
lda #0 ; data size
|
||||
jsr SSC::Put
|
||||
|
||||
|
||||
lda #0 ; set up write pointer
|
||||
sta ZP_PTR
|
||||
lda PAGE
|
||||
|
|
@ -139,12 +152,13 @@ LASTP1: .byte 0
|
|||
ldx #PAGESIZE ; plan to receive this many pages
|
||||
ldy #0
|
||||
|
||||
: jsr SSC::Get ; TODO: look for escape codes in the sequence
|
||||
: jsr SSC::Get
|
||||
sta (ZP_PTR),Y
|
||||
iny
|
||||
bne :- ; Do a full page...
|
||||
|
||||
jsr SendInputState ; brief moment to send data back upstream
|
||||
;; Interleave to maintain responsiveness
|
||||
jsr SendInputState
|
||||
|
||||
inc ZP_PTR+1
|
||||
dex
|
||||
|
|
@ -158,26 +172,6 @@ LASTP1: .byte 0
|
|||
;;; Input device routines
|
||||
;;;
|
||||
;;;-------------------------------------------------------------------
|
||||
;;; Protocol:
|
||||
;;; $7f - $ff - key down, ASCII code + $80
|
||||
;;; otherwise, a transition:
|
||||
;;;
|
||||
SIS_KBUP = $00 ; Key up
|
||||
SIS_OADOWN = $01 ; Open Apple transitioned to down
|
||||
SIS_OAUP = $02 ; Open Apple transitioned to up
|
||||
SIS_CADOWN = $03 ; Closed Apple transitioned to down
|
||||
SIS_CAUP = $04 ; Closed Apple transitioned to up
|
||||
;;;
|
||||
;;; $05 - $0f : reserved
|
||||
;;;
|
||||
SIS_MX = $10 ; Mouse X high nibble
|
||||
SIS_MY = $20 ; Mouse Y high nibble
|
||||
SIS_PDL0 = $30 ; Paddle 0 high nibble
|
||||
SIS_PDL1 = $40 ; Paddle 1 high nibble
|
||||
;;;
|
||||
;;; $50 - $7e : reserved
|
||||
;;;
|
||||
SIS_SYNC = $7f
|
||||
|
||||
;;;---------------------------------------------------------
|
||||
;;; Initialize input devices and storage for detecting
|
||||
|
|
@ -185,26 +179,6 @@ LASTP1: .byte 0
|
|||
|
||||
.proc InitInput
|
||||
|
||||
;;; Init keyboard state
|
||||
lda #SIS_KBUP
|
||||
sta LASTKB
|
||||
|
||||
;;; Init Open/Closed Apple states
|
||||
lda #SIS_OAUP ; NOTE: Don't store OA state as it fluctuates
|
||||
sta LASTOA
|
||||
lda #SIS_CAUP ; NOTE: Don't store CA state as it fluctuates
|
||||
sta LASTCA
|
||||
|
||||
.ifdef PADDLE_SUPPORT
|
||||
;;; Init Paddle state
|
||||
lda #SIS_PDL0
|
||||
ora #8 ; Middle of range 0...15
|
||||
sta LASTP0
|
||||
lda #SIS_PDL1
|
||||
ora #8 ; Middle of range 0...15
|
||||
sta LASTP1
|
||||
.endif
|
||||
|
||||
.ifdef MOUSE_SUPPORT
|
||||
jsr Mouse::FindMouse
|
||||
.endif
|
||||
|
|
@ -214,24 +188,29 @@ LASTP1: .byte 0
|
|||
|
||||
|
||||
;;;---------------------------------------------------------
|
||||
;;; Send keyboard joystick and/or mouse state over the
|
||||
;;; serial port
|
||||
;;;
|
||||
;;; Algorithm:
|
||||
;;; - Send key state (if it changed)
|
||||
;;; - otherwise send open-apple state (if it changed)
|
||||
;;; - otherwise send closed-apple state (if it changed)
|
||||
;;; - otherwise send paddle 0 state (if it changed)
|
||||
;;; - (TODO: Mouse state)
|
||||
;;; - otherwise send sync byte
|
||||
;;; Send a full set of input state updates.
|
||||
|
||||
;;; Assumes time to transmit is roughly comparable to time
|
||||
;;; to measure input state, therefore only sending changes is
|
||||
;;; not worthwhile in most cases.
|
||||
|
||||
.proc SendInputState
|
||||
jsr MaybeSendKeyboard
|
||||
jsr SendButtons
|
||||
|
||||
SaveRegisters ; Store registers
|
||||
clc
|
||||
.ifdef PADDLE_SUPPORT
|
||||
jsr SendPaddles
|
||||
.endif
|
||||
|
||||
;;;--------------------------------------
|
||||
;;; Send key state, if it changed
|
||||
.ifdef MOUSE_SUPPORT
|
||||
jsr SendMouse
|
||||
.endif
|
||||
|
||||
.endproc
|
||||
|
||||
|
||||
;;;------------------------------------------------------------
|
||||
;;; Keyboard
|
||||
|
||||
;;; NOTE: Can't use KBDSTRB to detect key up -> key down transition
|
||||
;;; since the msb can change before the key code. Instead, consider
|
||||
|
|
@ -244,148 +223,98 @@ LASTP1: .byte 0
|
|||
;;; Down - Down Save and send key ONLY if different
|
||||
;;;
|
||||
|
||||
lda LASTKB
|
||||
bne KEY_WAS_DOWN
|
||||
last_kb: .byte 0
|
||||
|
||||
KEY_WAS_UP:
|
||||
.proc MaybeSendKeyboard
|
||||
lda last_kb
|
||||
bne key_was_down
|
||||
|
||||
key_was_up:
|
||||
;; Key was up - send only if now down.
|
||||
lda KBD ; Read keyboard
|
||||
bpl END_KEY ; - still up
|
||||
sta LASTKB ; Down, so save it
|
||||
jsr SSC::Put ; and send it
|
||||
jmp DONE
|
||||
bpl done ; Do nothing if it is still up.
|
||||
jmp send ; Otherwise send.
|
||||
|
||||
KEY_WAS_DOWN:
|
||||
; key was down - strobe should match
|
||||
; unless the key changed or was released
|
||||
key_was_down:
|
||||
;; Key was down - strobe should match
|
||||
;; unless the key changed or was released.
|
||||
lda KBDSTRB
|
||||
bmi KBDSTRB_DOWN
|
||||
KBDSTRB_UP:
|
||||
lda #SIS_KBUP ; Key was released
|
||||
sta LASTKB ; so save it
|
||||
jsr SSC::Put ; and send it
|
||||
jmp DONE
|
||||
KBDSTRB_DOWN:
|
||||
cmp LASTKB ; Same key as last time?
|
||||
beq END_KEY ; - no change
|
||||
sta LASTKB ; New key, so save it
|
||||
jsr SSC::Put ; and send it
|
||||
jmp DONE
|
||||
bmi kbdstrb_down
|
||||
|
||||
END_KEY:
|
||||
kbdstrb_up:
|
||||
lda #0 ; Now released
|
||||
jmp send
|
||||
|
||||
;;;--------------------------------------
|
||||
;;; Send Open Apple state, if it changed
|
||||
kbdstrb_down:
|
||||
cmp last_kb ; Same key as last time?
|
||||
beq done ; - no change, don't send.
|
||||
jmp send
|
||||
|
||||
;;; TODO: Can simplify this code if we make the high bits the same
|
||||
;;; for both OA states and bit = 0 down: lda BUTN0 ; ROL ; LDA #0 ; ROL ; ORA #signature
|
||||
|
||||
TEST_OA:
|
||||
lda BUTN0 ; Test Open Apple state
|
||||
bmi OA_IS_DOWN
|
||||
OA_IS_UP:
|
||||
lda #SIS_OAUP
|
||||
cmp LASTOA ; Changed?
|
||||
beq END_OA ; Nope
|
||||
sta LASTOA ; Yes, save it / send it!
|
||||
send: sta last_kb
|
||||
lda Protocol::Keyboard
|
||||
jsr SSC::Put
|
||||
jmp DONE
|
||||
OA_IS_DOWN:
|
||||
lda #SIS_OADOWN
|
||||
cmp LASTOA ; Changed?
|
||||
beq END_OA ; Nope
|
||||
sta LASTOA ; Yes, save it / send it!
|
||||
lda #1 ; Data size
|
||||
jsr SSC::Put
|
||||
lda last_kb
|
||||
jsr SSC::Put
|
||||
jmp DONE
|
||||
|
||||
END_OA:
|
||||
done: rts
|
||||
.endproc
|
||||
|
||||
;;;--------------------------------------
|
||||
;;; Send Closed Apple state, if it changed
|
||||
;;;------------------------------------------------------------
|
||||
;;; Buttons
|
||||
|
||||
TEST_CA:
|
||||
lda BUTN1 ; Has the Open Apple/Button 1 value changed?
|
||||
bmi CA_IS_DOWN
|
||||
CA_IS_UP:
|
||||
lda #SIS_CAUP
|
||||
cmp LASTCA ; Changed?
|
||||
beq END_CA ; Nope
|
||||
sta LASTCA ; Yes, save it
|
||||
jsr SSC::Put ; and send it
|
||||
jmp DONE
|
||||
CA_IS_DOWN:
|
||||
lda #SIS_CADOWN
|
||||
cmp LASTCA ; Changed?
|
||||
beq END_CA ; Nope
|
||||
sta LASTCA ; Yes, save it
|
||||
jsr SSC::Put ; and send it
|
||||
jmp DONE
|
||||
.proc SendButtons
|
||||
|
||||
END_CA:
|
||||
lda Protocol::Button0
|
||||
jsr SSC::Put
|
||||
lda #1 ; Data size
|
||||
jsr SSC::Put
|
||||
lda BUTN0
|
||||
jsr SSC::Put
|
||||
|
||||
lda Protocol::Button1
|
||||
jsr SSC::Put
|
||||
lda #1 ; Data size
|
||||
jsr SSC::Put
|
||||
lda BUTN1
|
||||
jsr SSC::Put
|
||||
|
||||
rts
|
||||
.endproc
|
||||
|
||||
;;;------------------------------------------------------------
|
||||
;;; Paddles
|
||||
|
||||
.ifdef PADDLE_SUPPORT
|
||||
.proc SendPaddles
|
||||
|
||||
lda Protocol::Paddle0
|
||||
jsr SSC::Put
|
||||
lda #1 ; Data size
|
||||
jsr SSC::Put
|
||||
|
||||
;;;--------------------------------------
|
||||
;;; Send Paddle 0 state, if it changed
|
||||
TEST_PDL0:
|
||||
ldx #0
|
||||
jsr PREAD
|
||||
tya
|
||||
lsr ; Shift to low nibble
|
||||
lsr
|
||||
lsr
|
||||
lsr
|
||||
ora #SIS_PDL0 ; And mark it with the signature
|
||||
cmp LASTP0 ; Change?
|
||||
beq END_PDL0 ; Nope
|
||||
sta LASTP0 ; Yes, save it
|
||||
jsr SSC::Put ; and send it
|
||||
jmp DONE
|
||||
END_PDL0:
|
||||
; Chew up time so next paddle read will be correct
|
||||
; TODO: Replace this with a "read both" strobes
|
||||
; routine
|
||||
: .repeat 11 ; By experiment, need 11 NOPs.
|
||||
nop
|
||||
.endrep
|
||||
iny
|
||||
bne :-
|
||||
jsr SSC::Put
|
||||
|
||||
;; Assumes at least 11 cycles to send, so
|
||||
;; timer has a chance to reset.
|
||||
|
||||
lda Protocol::Paddle1
|
||||
jsr SSC::Put
|
||||
lda #1 ; Data size
|
||||
jsr SSC::Put
|
||||
|
||||
;;;--------------------------------------
|
||||
;;; Send Paddle 1 state, if it changed
|
||||
TEST_PDL1:
|
||||
ldx #1
|
||||
jsr PREAD
|
||||
tya
|
||||
lsr ; Shift to low nibble
|
||||
lsr
|
||||
lsr
|
||||
lsr
|
||||
ora #SIS_PDL1 ; And mark it with the signature
|
||||
cmp LASTP1 ; Change?
|
||||
beq END_PDL1 ; Nope
|
||||
sta LASTP1 ; Yes, save it
|
||||
jsr SSC::Put ; and send it
|
||||
jmp DONE
|
||||
END_PDL1:
|
||||
; NOTE: No need to chew time like PDL0
|
||||
; since data receive will make up for it; if we
|
||||
; loop in SendInputState need to add it here
|
||||
|
||||
.endif
|
||||
|
||||
|
||||
;;;--------------------------------------
|
||||
;;; No state changes so send sync byte
|
||||
|
||||
lda #SIS_SYNC
|
||||
jsr SSC::Put
|
||||
|
||||
DONE:
|
||||
RestoreRegisters
|
||||
rts
|
||||
|
||||
.endproc
|
||||
|
||||
.endif
|
||||
|
||||
;;;-------------------------------------------------------------------
|
||||
;;;
|
||||
|
|
|
|||
Loading…
Reference in New Issue