1990/0830/gnot/screen.c (diff list | history)

1990/0825/sys/src/9/gnot/screen.c:22,27 – 1990/0830/sys/src/9/gnot/screen.c:22,28 (short | long | prev | next)
1990/03091
1990/0329		void duartinit(void);
1990/0808		int duartacr;
1990/0830		int duartimr;
1990/0329
1990/03091		Bitmap screen = {
1990/0825/sys/src/9/gnot/screen.c:205,211 – 1990/0830/sys/src/9/gnot/screen.c:206,212
1990/0329		duart[1].ip_opcr = 0x00; duart[1].scc_ropbc = 0xFF; /* make sure the port is reset first */ duart[1].scc_sopbc = 0x04; /* dtr = 1, pp = 01 */
1990/0707		duart[0].is_imr = IM_IPC|IM_RRDYB|IM_XRDYB|IM_RRDYA|IM_XRDYA;
1990/0830		duart[0].is_imr = duartimr = IM_IPC|IM_RRDYB|IM_XRDYB|IM_RRDYA|IM_XRDYA;
1990/0329		duart[0].cmnd = ENB_TX|ENB_RX; /* enable TX and RX last */ duart[1].cmnd = ENB_TX|ENB_RX;
1990/0825/sys/src/9/gnot/screen.c:217,230 – 1990/0830/sys/src/9/gnot/screen.c:218,235
1990/0329		duart[0].data = 0x02;
1990/0808		}
1990/0830		int duartinputport(void) { Duart *duart = DUARTREG; return duart[1].ip_opcr; }
1990/0808		void duartbaud(int b) { int x; Duart *duart;
1990/0830		Duart *duart = DUARTREG;
1990/0808		duart = DUARTREG;                  switch(b){ case 38400: x = BD38400;
1990/0825/sys/src/9/gnot/screen.c:257,262 – 1990/0830/sys/src/9/gnot/screen.c:262,293
1990/0808		duart[1].sr_csr = x;
1990/0329		}
1990/0830		void duartdtr(int val) { Duart *duart = DUARTREG; if (val) duart[1].scc_ropbc=0x01; else duart[1].scc_sopbc=0x01; } void duartbreak(int ms) { static QLock brk; Duart *duart = DUARTREG; if (ms<=0 || ms >20000) error(0, Ebadarg); qlock(&brk); duart[0].is_imr = duartimr &= ~IM_XRDYB; duart[1].cmnd = STRT_BRK|ENB_TX; tsleep(&u->p->sleep, return0, 0, ms); duart[1].cmnd = STOP_BRK|ENB_TX; duart[0].is_imr = duartimr |= IM_XRDYB; qunlock(&brk); }
1990/0330		enum{ Kptime=200 /* about once per ms */ };
1990/0825/sys/src/9/gnot/screen.c:269,275 – 1990/0830/sys/src/9/gnot/screen.c:300,306
1990/0330		duart = DUARTREG; duart[0].ctur = (Kptime)>>8; duart[0].ctlr = (Kptime)&255; duart[0].is_imr = IM_IPC|IM_RRDYB|IM_XRDYB|IM_RRDYA|IM_CRDY;
1990/0830		duart[0].is_imr = duartimr |= IM_CRDY;
1990/0330		x = duart[1].scc_sopbc; }
1990/0825/sys/src/9/gnot/screen.c:281,287 – 1990/0830/sys/src/9/gnot/screen.c:312,318
1990/0330		duart = DUARTREG; x = duart[1].scc_ropbc; duart[0].is_imr = IM_IPC|IM_RRDYB|IM_XRDYB|IM_RRDYA;
1990/0830		duart[0].is_imr = duartimr &= ~IM_CRDY;
1990/0330		} void