- page 200\r
\r
; Interrupt drivers for ASCI0 and ASCI1\r
\r
global as0_dev,as1_dev\r
\r
- extrn as_init\r
+ extrn @ctbl,f_cpu\r
extrn ff_empty,ff_get,ff_full,ff_put\r
extrn ff_puth,ff_cnt,ff_gech\r
extrn bufinit\r
- extrn isv_sw,ijphl,add_hla\r
+ extrn isv_sw,ijphl,add_hla,div32_r\r
+ extrn b_st_a,b_ld_a\r
\r
\r
\r
- include config.inc\r
- include ioctl.inc\r
- include z180reg.inc\r
+ maclib z180reg.inc\r
+ maclib config.inc\r
+ maclib ioctl.inc\r
+ maclib modebaud.inc\r
\r
\r
+ m2b mbxon_bit,mb$xon$xoff\r
\r
;-----------------------------------------------------\r
\r
dw asci0_ista\r
dw asci_ioctl\r
as0_dev:\r
- db 0\r
- db 0\r
- db 0\r
- db 0\r
- db 0\r
+ db 0 ;absolute device #\r
+ db 0 ;relative device\r
+ db 0 ;iflags\r
+ db 0 ;fflags\r
+ db M_CS8 ;cflags\r
o.absdev equ 0\r
o.reldev equ 1\r
-o.cflags equ 2\r
-o.iflags equ 3\r
-o.fflags equ 4\r
+o.iflags equ 2\r
+o.fflags equ 3\r
+o.cflags equ 4\r
+\r
+ db 0\r
+ db 0\r
+oint.iflags equ as0_dev+o.iflags-s0.inbuf\r
+oint.fflags equ as0_dev+o.fflags-s0.inbuf\r
+ mkbuf s0.rx_id, s0.inbuf, s0.rx_len\r
+ mkbuf s0.tx_id, s0.outbuf,s0.tx_len\r
+\r
\r
dw asci1_out\r
dw asci1_osta\r
dw asci1_ista\r
dw asci_ioctl\r
as1_dev:\r
- db 0\r
- db 1\r
- db 0\r
- db 0\r
- db 0\r
+ db 0 ;absolute device #\r
+ db 1 ;relative device\r
+ db 0 ;iflags\r
+ db 0 ;fflags\r
+ db M_CS8 ;cflags\r
\r
-\r
-\r
-o.in_flags equ $-s0.inbuf\r
db 0\r
-o.in_flow equ $-s0.inbuf\r
db 0\r
- mkbuf s0.rx_id, s0.inbuf, s0.rx_len\r
- mkbuf s0.tx_id, s0.outbuf,s0.tx_len\r
mkbuf s1.rx_id, s1.inbuf, s1.rx_len\r
mkbuf s1.tx_id, s1.outbuf,s1.tx_len\r
\r
\r
\r
ioctl_ftab:\r
- dw cinit\r
+ dw func_tcinit ;(00h) CP/M 3 DEVINI function\r
+ dw func_tcgeta ;(01h) Get the current serial port settings.\r
+ dw func_tcseta ;(02h) Set the current serial port settings.\r
+ dw func_tcsetaw ;(03h) Allow the output buffer to drain\r
+ dw func_tcsetaf ;(04h) Allow the output buffer to drain, discard pending input\r
+ dw func_tcsbrk ;(05h) Sending a break (250ms .. 500ms)\r
+ dw func_tcsbrkp ;(06h) arg is timeinterval in 0.1sec\r
+ dw func_tiocsbrk ;(07h) Turn break on\r
+ dw func_tioccbrk ;(08h) Turn break off\r
+ dw func_tcxonc ;(09h) Software flow control (TCOOFF, TCOON, TCIOFF, TCION)\r
+ dw func_tcflsh ;(0Ah) Flush input/output buffer (TCIFLUSH, TCOFLUSH, TCIOFLUSH)\r
+ dw func_fionread ;(0Bh) Get the number of bytes in the input buffer.\r
+ dw func_tiocoutq ;(0Ch) Get the number of bytes in the output buffer.\r
+ dw func_tiocmget ;(0Dh) get the status of modem bits.\r
+ dw func_tiocmbis ;(0Eh) set the indicated modem bits.\r
+ dw func_tiocmbic ;(0Fh) clear the indicated modem bits.\r
+ dw func_tiocmset ;(10h) set the status of modem bits.\r
+ dw func_tiocgsoftcar ;(11h) Get the status of the CLOCAL flag in the c_cflag field\r
+ dw func_tiocssoftcar ;(12h) Set the CLOCAL flag when *argp is nonzero, and clear it otherwise.\r
+\r
IOCTL_MAX equ ($-ioctl_ftab)/2\r
dw nofunc\r
\r
+\r
;--------------------------------------------------------------\r
;\r
; b: device number\r
call ijphl\r
pop ix\r
nofunc:\r
+ or a\r
ret\r
\r
-\r
;--------------------------------------------------------------\r
+; CP/M 3 DEVINI function\r
; Init Serial I/O for input and output (ASCI 0/1)\r
\r
-cinit:\r
- ld a,stat0\r
- add a,(ix+o.reldev)\r
- ld c,a\r
- ld b,0\r
- push bc\r
- xor a ;\r
- out (c),a ;Disable rx/tx interrupts\r
+func_tcinit:\r
+ call asci_stop\r
+\r
+init_st:\r
+ ld c,asext0 ;Enable baud rate generator\r
+ ld a,M_BRGMOD+M_DCD0DIS ; +M_CTS0DIS +M_BREAKEN\r
+ bit CCTS_OFLOW,(ix+o.fflags)\r
+ jr nz,$+4\r
+ or M_CTS0DIS\r
+ call out_asci_reg\r
\r
- ld c,(ix+o.reldev)\r
ld b,(ix+o.absdev)\r
- call as_init\r
+ ld c,8 ;\r
+ mlt bc ;\r
+ ld hl,@ctbl+7 ;\r
+ add hl,bc ;\r
+ ld a,(hl) ;get baudrate index\r
+ call as_br_div\r
+ ld c,astc0l\r
+ ld a,l\r
+ call out_asci_reg\r
+ inc c\r
+ ld a,h\r
+ call out_asci_reg\r
+\r
+\r
+ ld c,cntlb0\r
+ ld a,M_MPBT ;No MP Mode, X16\r
+ bit PARODD,(ix+o.iflags)\r
+ jr z,$+4\r
+ or M_PEO\r
+ call out_asci_reg\r
+\r
+ ld c,cntla0\r
+ ld a,(ix+o.cflags)\r
+ srlan CS8\r
+ ld hl,mod_tab\r
+ call add_hla\r
+ ld a,(hl)\r
+ or a,M_RE+M_TE+M_RTS0+M_EFR ;Rx/Tx enable\r
+ call out_asci_reg\r
+\r
+ push ix\r
bit 0,(ix+o.reldev)\r
jr nz,init_1\r
ld hl,rtxisvjmp0 ;rx/tx int vector\r
ld (ivtab + IV$ASCI0),hl ;\r
- ld ix,s0.inbuf\r
- call bufinit\r
ld ix,s0.outbuf\r
+ call bufinit\r
+ ld ix,s0.inbuf\r
jr init_2\r
init_1:\r
ld hl,rtxisvjmp1 ;rx/tx int vector\r
ld (ivtab + IV$ASCI1),hl ;\r
- ld ix,s1.inbuf\r
- call bufinit\r
ld ix,s1.outbuf\r
+ call bufinit\r
+ ld ix,s1.inbuf\r
init_2:\r
call bufinit\r
- pop bc\r
+ pop ix\r
+ call asci_start\r
+ ret\r
+\r
+;--------------------------------------------------------------\r
+\r
+mod_tab:\r
+ db 000B ; 7N1\r
+ db 100B ; 8N1\r
+ db 001B ; 7N2\r
+ db 101B ; 8N2\r
+ db 010B ; 7P1\r
+ db 110B ; 8P1\r
+ db 011B ; 7P2\r
+ db 111B ; 8P2\r
+\r
+\r
+;--------------------------------------------------------------\r
+; Get the current serial port settings.\r
+\r
+func_tcgeta:\r
+ ld a,d\r
+ or e\r
+ ld a,0ffh\r
+ jr z,fgeta_e\r
+\r
+ ld a,(ix+o.iflags)\r
+ call b_st_a\r
+ inc de\r
+ ld a,(ix+o.fflags)\r
+ call b_st_a\r
+ inc de\r
+\r
+ ld b,(ix+o.absdev)\r
+ ld c,8 ;\r
+ mlt bc ;\r
+ ld hl,@ctbl+7 ;\r
+ add hl,bc ;\r
+ ld a,(hl) ;get baudrate index\r
+ and M_CBAUD\r
+ ld b,a\r
+ ld a,(ix+o.cflags)\r
+ and ~M_CBAUD\r
+ or b\r
+ call b_st_a\r
+ dec de\r
+ dec de\r
+ xor a\r
+fgeta_e:\r
+ ret\r
+\r
+\r
+;--------------------------------------------------------------\r
+; Set the current serial port settings.\r
+\r
+func_tcseta:\r
+ ld a,d\r
+ or e\r
+ ld a,0ffh\r
+ jr z,fseta_e\r
+\r
+ call asci_stop\r
+\r
+ call b_ld_a\r
+ ld (ix+o.iflags),a\r
+ inc de\r
+ call b_ld_a\r
+ ld (ix+o.fflags),a\r
+ inc de\r
+\r
+ ld b,(ix+o.absdev)\r
+ ld c,8 ;\r
+ mlt bc ;\r
+ ld hl,@ctbl+7 ;\r
+ add hl,bc ;\r
+ call b_ld_a\r
+ ld (ix+o.cflags),a\r
+ and M_CBAUD\r
+ ld (hl),a ;set baudrate index\r
+ dec de\r
+ dec de\r
+ push de\r
+ call init_st\r
+ pop de\r
+ xor a\r
+fseta_e:\r
+ ret\r
+\r
+\r
+;--------------------------------------------------------------\r
+; Allow the output buffer to drain\r
+\r
+func_tcsetaw:\r
+\r
+;--------------------------------------------------------------\r
+; Allow the output buffer to drain, discard pending input\r
+\r
+func_tcsetaf:\r
+\r
+;--------------------------------------------------------------\r
+; Sending a break (250ms .. 500ms)\r
+\r
+func_tcsbrk:\r
+\r
+;--------------------------------------------------------------\r
+; arg is timeinterval in 0.1sec\r
+\r
+func_tcsbrkp:\r
+\r
+;--------------------------------------------------------------\r
+; Turn break on\r
+\r
+func_tiocsbrk:\r
+\r
+;--------------------------------------------------------------\r
+; Turn break off\r
+\r
+func_tioccbrk:\r
+\r
+;--------------------------------------------------------------\r
+; Software flow control (TCOOFF, TCOON, TCIOFF, TCION)\r
+\r
+func_tcxonc:\r
+\r
+;--------------------------------------------------------------\r
+; Flush input/output buffer (TCIFLUSH, TCOFLUSH, TCIOFLUSH)\r
+\r
+func_tcflsh:\r
+\r
+;--------------------------------------------------------------\r
+; Get the number of bytes in the input buffer.\r
+\r
+func_fionread:\r
+\r
+;--------------------------------------------------------------\r
+; Get the number of bytes in the output buffer.\r
+\r
+func_tiocoutq:\r
+\r
+;--------------------------------------------------------------\r
+; get the status of modem bits.\r
+\r
+func_tiocmget:\r
+\r
+;--------------------------------------------------------------\r
+; set the indicated modem bits.\r
+\r
+func_tiocmbis:\r
+\r
+;--------------------------------------------------------------\r
+; clear the indicated modem bits.\r
+\r
+func_tiocmbic:\r
+\r
+;--------------------------------------------------------------\r
+; set the status of modem bits.\r
+\r
+func_tiocmset:\r
+\r
+;--------------------------------------------------------------\r
+; Get the status of the CLOCAL flag in the c_cflag field\r
+\r
+func_tiocgsoftcar:\r
+\r
+;--------------------------------------------------------------\r
+; Set the CLOCAL flag when *argp is nonzero, and clear it otherwise.\r
+\r
+func_tiocssoftcar:\r
+\r
+ or 0ffh\r
+ ret\r
+\r
+;--------------------------------------------------------------\r
+\r
+asci_stop:\r
+ ld c,stat0 ;Disable rx/tx interrupts\r
+ xor a ;\r
+ call out_asci_reg\r
+\r
+ ld c,cntla0 ;Disable receiver and transmitter\r
+ ld a,M_RTS0+M_EFR ;RTS/CKA1\r
+ jr out_asci_reg\r
+\r
+;--------------------------------------------------------------\r
+\r
+asci_start:\r
+ ld c,stat0 ;\r
ld a,M_RIE\r
- out (c),a ;Enable rx interrupts\r
+ jr out_asci_reg\r
+\r
+;--------------------------------------------------------------\r
+; output to asci0/1 register\r
+;\r
+; c: register address\r
+; a: value\r
+;\r
+\r
+out_asci_reg:\r
+ push bc\r
+ ld b,a\r
+ ld a,c\r
+ cp astc0l ;astc0/1 are 16 bit\r
+ jr c,$+5\r
+ add a,(ix+o.reldev)\r
+ add a,(ix+o.reldev)\r
+ ld c,a\r
+ ld a,b\r
+ ld b,0\r
+ out (c),a\r
+ pop bc\r
ret\r
\r
+;--------------------------------------------------------------\r
+; baud rate divider\r
+;\r
+; a: index\r
+; return\r
+; hl: divider\r
+\r
+as_br_div:\r
+ push de\r
+ push bc\r
+ and 0fh\r
+ add a,a ;get factor\r
+ ld hl,bd150_tab\r
+ call add_hla\r
+ ld c,(hl)\r
+ inc hl\r
+ ld b,(hl)\r
+ ld hl,(f_cpu)\r
+ ld de,(f_cpu+2)\r
+ call div32_r\r
+ ld bc,32*150\r
+ call div32_r\r
+ ld de,2\r
+ or a\r
+ sbc hl,de\r
+ pop bc\r
+ pop de\r
+ ret nc\r
+ ld hl,0\r
+ ret\r
+\r
+bd150_tab:\r
+; factor index baudrate orig. cp/m\r
+ dw 19200/150 ; 0 19200 -\r
+ dw 28800/150 ; 1 28800 50\r
+ dw 38400/150 ; 2 38400 75\r
+ dw 57600/150 ; 3 57600 110\r
+ dw 11520/15 ; 4 115200 134.5\r
+ dw 150/150 ; 5 150\r
+ dw 300/150 ; 6 300\r
+ dw 600/150 ; 7 600\r
+ dw 1200/150 ; 8 1200\r
+ dw 1800/150 ; 9 1800\r
+ dw 2400/150 ;10 2400\r
+ dw 3600/150 ;11 3600\r
+ dw 4800/150 ;12 4800\r
+ dw 7200/150 ;13 7200\r
+ dw 9600/150 ;14 9600\r
+ dw 19200/150 ;15 19200\r
+\r
+\r
+;--------------------------------------------------------------\r
+\r
+ if 0\r
+\r
+initab0:\r
+ db 1,stat0,0 ;Disable rx/tx interrupts\r
+ ;Enable baud rate generator\r
+ db 1,asext0,M_BRGMOD+M_DCD0DIS ; +M_CTS0DIS\r
+ db 2,astc0l\r
+init_br_off equ $ - initab0\r
+ dw 28\r
+ db 1,cntlb0,M_MPBT ;No MP Mode, X16\r
+ db 1,cntla0,M_RE+M_TE+M_MOD2 ;Rx/Tx enable, 8N1\r
+ db 0\r
+\r
+initab1:\r
+ db 1,stat1,0 ;Disable rx/tx ints, disable CTS1\r
+ db 1,asext1,M_BRGMOD ;Enable baud rate generator\r
+ db 2,astc1l,low 3, high 3\r
+ db 1,cntlb1,M_MPBT ;No MP Mode, X16\r
+ db 1,cntla1,M_RE+M_TE+M_MOD2 ;Rx/Tx enable, 8N1\r
+ db 0\r
+ endif\r
\r
;--------------------------------------------------------------\r
\r
;todo: parity, framing overrun error\r
\r
\r
- ld e,(ix+o.in_flow)\r
+ ld e,(ix+oint.fflags)\r
bit IXON,e\r
jr z,rxtxi0_2\r
\r
projects / z180-stamp-cpm3.git / blobdiff