From: Christian Groessler Date: Fri, 6 Dec 2013 20:16:10 +0000 (+0100) Subject: remove old (static) serial driver boilerplate X-Git-Tag: V2.15~208^2~1 X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=2461163f3856fe430929a57812c3a8440dd90057;p=cc65 remove old (static) serial driver boilerplate --- diff --git a/libsrc/atari/rs232.s_ b/libsrc/atari/rs232.s_ deleted file mode 100644 index 35f20ca4f..000000000 --- a/libsrc/atari/rs232.s_ +++ /dev/null @@ -1,389 +0,0 @@ -; -; Christian Groessler, Dec-2001 -; -; RS232 routines using the R: device (currently tested with an 850 only) -; -; unsigned char __fastcall__ rs232_init (char hacked); -; unsigned char __fastcall__ rs232_params (unsigned char params, unsigned char parity); -; unsigned char __fastcall__ rs232_done (void); -; unsigned char __fastcall__ rs232_get (char* B); -; unsigned char __fastcall__ rs232_put (char B); -; unsigned char __fastcall__ rs232_pause (void); [TODO] -; unsigned char __fastcall__ rs232_unpause (void); [TODO] -; unsigned char __fastcall__ rs232_status (unsigned char* status, -; unsigned char* errors); [TODO] -; - - .import findfreeiocb - .import __do_oserror - .import fddecusage - .import fdtoiocb - .import __inviocb - .import clriocb - .import newfd - .import _close, pushax, popax, popa - .importzp ptr1, tmp2, tmp3 - - .export _rs232_init, _rs232_params, _rs232_done, _rs232_get - .export _rs232_put, _rs232_pause, _rs232_unpause, _rs232_status - - .include "atari.inc" - .include "errno.inc" - .include "rs232.inc" - - .rodata - -rdev: .byte "R:", ATEOL, 0 - - .bss - -; receive buffer -RECVBUF_SZ = 256 -recv_buf: .res RECVBUF_SZ - -cm_run: .res 1 ; concurrent mode running? - - .data - -rshand: .word $ffff - - .code - -;---------------------------------------------------------------------------- -; -; unsigned char __fastcall__ rs232_init (char hacked); -; /* Initialize the serial port. The parameter is ignored in the Atari version. -; * return 0/-1 for OK/Error -; */ -; - -.proc _rs232_init - - jsr findfreeiocb - bne init_err - txa - tay ; move iocb # into Y - lda #3 - sta tmp3 ; name length + 1 - lda #rdev - jsr newfd - tya - bcs doopen ; C set: open needed / device not already open - - pha - jsr _rs232_done ;** shut down if started @@@TODO check this out!! - pla - -doopen: tax - pha - jsr clriocb - pla - tax - lda #rdev - sta ICBAH,x - lda #OPEN - sta ICCOM,x - - lda #$0D ; mode in+out+concurrent - sta ICAX1,x - lda #0 - sta ICAX2,x - sta ICBLL,x ; zap buf len - sta ICBLH,x - jsr CIOV - bmi cioerr1 - - lda tmp2 ; get fd - sta rshand - ldx #0 - stx rshand+1 - txa - rts - -cioerr1:jsr fddecusage ; decrement usage counter of fd as open failed - -init_err: - ldx #0 - lda #RS_ERR_INIT_FAILED - rts - -.endproc ; _rs232_init - - -;---------------------------------------------------------------------------- -; -; unsigned char __fastcall__ rs232_params (unsigned char params, unsigned char parity); -; -; Set communication parameters. -; -; params contains baud rate, stop bits and word size -; parity contains parity -; -; 850 manual documents restrictions on the baud rate (not > 300), when not -; using 8 bit word size. So only 8 bit is currently tested. -; - -.proc _rs232_params - - sta tmp2 - lda rshand - cmp #$ff - bne work ; work only if initialized - lda #RS_ERR_NOT_INITIALIZED - bne done -work: lda rshand - ldx #0 - jsr fdtoiocb ; get iocb index into X - bmi inverr ; shouldn't happen - tax - - ; set handshake lines - - lda #34 ; xio 34, set cts, dtr etc - sta ICCOM,x - lda #192+48+3 ; DTR on, RTS on, XMT on - sta ICAX1,x - lda #0 - sta ICBLL,x - sta ICBLH,x - sta ICBAL,x - sta ICBAH,x - sta ICAX2,x - jsr CIOV - bmi cioerr - - ; set baud rate, word size, stop bits and ready monitoring - - lda #36 ; xio 36, baud rate - sta ICCOM,x - jsr popa ; get parameter - sta ICAX1,x - ;ICAX2 = 0, monitor nothing - jsr CIOV - bmi cioerr - - ; set translation and parity - - lda #38 ; xio 38, translation and parity - sta ICCOM,x - lda tmp2 - ora #32 ; no translation - sta ICAX1,x - jsr CIOV - bmi cioerr - - lda #0 -done: ldx #0 - rts - -inverr: jmp __inviocb - -.endproc ;_rs232_params - -cioerr: jmp __do_oserror - - -;---------------------------------------------------------------------------- -; -; unsigned char __fastcall__ rs232_done (void); -; /* Close the port, deinstall the interrupt hander. You MUST call this function -; * before terminating the program, otherwise the machine may crash later. If -; * in doubt, install an exit handler using atexit(). The function will do -; * nothing, if it was already called. -; */ -; - -.proc _rs232_done - - lda rshand - cmp #$ff - beq done -work: ldx rshand+1 - jsr pushax - jsr _close - pha - txa - pha - ldx #$ff - stx rshand - stx rshand+1 - inx - stx cm_run - pla - tax - pla -done: rts - -.endproc ;rs232_done - - -;---------------------------------------------------------------------------- -; -; unsigned char __fastcall__ rs232_get (char* B); -; /* Get a character from the serial port. If no characters are available, the -; * function will return RS_ERR_NO_DATA, so this is not a fatal error. -; */ -; - -.proc _rs232_get - - ldy rshand - cpy #$ff - bne work ; work only if initialized - lda #RS_ERR_NOT_INITIALIZED - bne nierr - -work: sta ptr1 - stx ptr1+1 ; store pointer to received char - - lda rshand - ldx #0 - jsr fdtoiocb - tax - lda cm_run ; concurrent mode already running? - bne go - jsr ena_cm ; turn on concurrent mode - -go: ; check whether there is any input available - - lda #STATIS ; status request, returns bytes pending - sta ICCOM,x - jsr CIOV - bmi cioerr ; @@@ error handling - - lda DVSTAT+1 ; get byte count pending - ora DVSTAT+2 - beq nix_da ; no input waiting... - - ; input is available: get it! - - lda #GETCHR ; get raw bytes - sta ICCOM,x ; in command code - lda #0 - sta ICBLL,x - sta ICBLH,x - sta ICBAL,x - sta ICBAH,x - jsr CIOV ; go get it - bmi cioerr ; @@@ error handling - - ldx #0 - sta (ptr1,x) ; return received byte - txa - rts - -nierr: ldx #0 - rts - -nix_da: lda #RS_ERR_NO_DATA - ldx #0 - rts - -.endproc ;_rs232_get - - -;---------------------------------------------------------------------------- -; -; unsigned char __fastcall__ rs232_put (char B); -; /* Send a character via the serial port. There is a transmit buffer, but -; * transmitting is not done via interrupt. The function returns -; * RS_ERR_OVERFLOW if there is no space left in the transmit buffer. -; */ -; - -.proc _rs232_put - - ldy rshand - cpy #$ff - bne work ; work only if initialized - lda #RS_ERR_NOT_INITIALIZED - bne nierr - -work: pha - lda rshand - ldx #0 - jsr fdtoiocb - tax - lda cm_run ; concurrent mode already running? - bne go - jsr ena_cm ; turn on concurrent mode - - ; @@@TODO: check output buffer overflow -go: lda #PUTCHR ; put raw bytes - sta ICCOM,x ; in command code - lda #0 - sta ICBLL,x - sta ICBLH,x - sta ICBAL,x - sta ICBAH,x - pla ; get the char back - jsr CIOV ; go do it - rts - -nierr: ldx #0 - rts - -.endproc ;_rs232_put - -;---------------------------------------------------------------------------- -; -; unsigned char __fastcall__ rs232_pause (void); -; /* Assert flow control and disable interrupts. */ -; - -_rs232_pause: - - -;---------------------------------------------------------------------------- -; -; unsigned char __fastcall__ rs232_unpause (void); -; /* Re-enable interrupts and release flow control */ -; - -_rs232_unpause: - - -;---------------------------------------------------------------------------- -; -; unsigned char __fastcall__ rs232_status (unsigned char* status, -; unsigned char* errors); -; /* Return the serial port status. */ -; - -_rs232_status: - - lda #255 - tax - rts - - -; enable concurrent rs232 mode -; gets iocb index in X -; all registers destroyed - -.proc ena_cm - - lda #40 ; XIO 40, start concurrent IO - sta ICCOM,x - sta cm_run ; indicate concurrent mode is running - lda #0 - sta ICAX1,x - sta ICAX2,x - lda #recv_buf - sta ICBAH,x - lda #RECVBUF_SZ - sta ICBLH,x - lda #$0D ; value from 850 man, p62. must be 0D?, - sta ICAX1,x ; or any non-zero? - jmp CIOV - -.endproc ;ena_cm - - .end