1990/0329/gnot/screen.c (diff list | history)

1990/0321/sys/src/9/gnot/screen.c:16,21 – 1990/0329/sys/src/9/gnot/screen.c:16,23 (short | long | prev | next)
1990/03091		int bwid; }out;
1990/0329		void duartinit(void);
1990/03091		Bitmap screen = {
1990/0320		(ulong*)((4*1024*1024-256*1024)|KZERO), /* BUG */
1990/0321/sys/src/9/gnot/screen.c:29,35 – 1990/0329/sys/src/9/gnot/screen.c:31,38
1990/03091		void screeninit(void) { bitblt(&screen, Pt(0, 0), &screen, screen.rect, 0);
1990/0329		duartinit(); bitblt(&screen, Pt(0, 0), &screen, screen.r, 0);
1990/03091		out.pos.x = MINX; out.pos.y = 0; out.bwid = defont0.info[' '].width;
1990/0321/sys/src/9/gnot/screen.c:44,57 – 1990/0329/sys/src/9/gnot/screen.c:47,60
1990/03091		if(c == '\n'){ out.pos.x = MINX; out.pos.y += defont0.height; if(out.pos.y > screen.rect.max.y-defont0.height) out.pos.y = screen.rect.min.y;
1990/0329		if(out.pos.y > screen.r.max.y-defont0.height) out.pos.y = screen.r.min.y;
1990/03091		bitblt(&screen, Pt(0, out.pos.y), &screen, Rect(0, out.pos.y, screen.rect.max.x, out.pos.y+2*defont0.height), 0);
1990/0329		Rect(0, out.pos.y, screen.r.max.x, out.pos.y+2*defont0.height), 0);
1990/03091		}else if(c == '\t'){ nx = out.pos.x + (8-(out.pos.x/out.bwid&7))*out.bwid; out.pos.x = nx; if(out.pos.x >= screen.rect.max.x)
1990/0329		if(out.pos.x >= screen.r.max.x)
1990/03091		screenputc('\n'); }else if(c == '\b'){ if(out.pos.x >= out.bwid+MINX){
1990/0321/sys/src/9/gnot/screen.c:60,66 – 1990/0329/sys/src/9/gnot/screen.c:63,69
1990/03091		out.pos.x -= out.bwid; } }else{ if(out.pos.x >= screen.rect.max.x-out.bwid)
1990/0329		if(out.pos.x >= screen.r.max.x-out.bwid)
1990/03091		screenputc('\n'); buf[0] = c&0x7F; buf[1] = 0;
1990/0321/sys/src/9/gnot/screen.c:77,89 – 1990/0329/sys/src/9/gnot/screen.c:80,97
1990/03091		uchar cmnd; /* Command Register */ uchar data; /* RX Holding / TX Holding Register */ uchar ipc_acr; /* Input Port Change/Aux. Control Register */
1990/0329		#define ivr ivr /* Interrupt Vector Register */
1990/03091		uchar is_imr; /* Interrupt Status/Interrupt Mask Register */
1990/0329		#define ip_opcr is_imr /* Input Port/Output Port Configuration Register */
1990/03091		uchar ctur; /* Counter/Timer Upper Register */
1990/0329		#define scc_sopbc ctur /* Start Counter Command/Set Output Port Bits Command */
1990/03091		uchar ctlr; /* Counter/Timer Lower Register */
1990/0329		#define scc_ropbc ctlr /* Stop Counter Command/Reset Output Port Bits Command */
1990/03091		}; enum{ CHAR_ERR =0x00, /* MR1x - Mode Register 1 */
1990/0329		PAR_ENB =0x00,
1990/03091		EVEN_PAR =0x00, ODD_PAR =0x04, NO_PAR =0x10,
1990/0321/sys/src/9/gnot/screen.c:113,118 – 1990/0329/sys/src/9/gnot/screen.c:121,129
1990/03091		PAR_ERR =0x20, FRM_ERR =0x40, RCVD_BRK =0x80,
1990/0329		BD9600 =0xBB, BD4800 =0x99, BD2400 =0x88,
1990/03091		IM_IPC =0x80, /* IMRx/ISRx - Interrupt Mask/Interrupt Status */ IM_DBB =0x40, IM_RRDYB =0x20,
1990/0321/sys/src/9/gnot/screen.c:143,148 – 1990/0329/sys/src/9/gnot/screen.c:154,207
1990/03091		}; void
1990/0329		duartinit(void) { Duart *duart; duart = DUARTREG; /* * Keyboard */ duart[0].cmnd = RESET_RCV|DIS_TX|DIS_RX; duart[0].cmnd = RESET_TRANS; duart[0].cmnd = RESET_ERR; duart[0].cmnd = RESET_MR; duart[0].mr1_2 = CHAR_ERR|PAR_ENB|EVEN_PAR|CBITS8; duart[0].mr1_2 = NORM_OP|ONESTOPB; duart[0].sr_csr = BD4800; /* * Pen */ duart[1].cmnd = RESET_RCV|DIS_TX|DIS_RX; duart[1].cmnd = RESET_TRANS; duart[1].cmnd = RESET_ERR; duart[1].cmnd = RESET_MR; duart[1].mr1_2 = CHAR_ERR|NO_PAR|CBITS8; duart[1].mr1_2 = NORM_OP|ONESTOPB; duart[1].sr_csr = BD2400; /* * Output port */ duart[0].ipc_acr = 0xBF; /* allow change of state interrupt */ 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 */ duart[0].is_imr = IM_IPC|IM_RRDYB|IM_XRDYB|IM_RRDYA; duart[0].cmnd = ENB_TX|ENB_RX; /* enable TX and RX last */ duart[1].cmnd = ENB_TX|ENB_RX; /* * Initialize keyboard */ while (!(duart[0].sr_csr & (XMT_EMT|XMT_RDY))) ; duart[0].data = 0x02; } void
1990/03091		duartintr(void) { int cause, status, c;
1990/0321/sys/src/9/gnot/screen.c:176,180 – 1990/0329/sys/src/9/gnot/screen.c:235,248
1990/03091		*/ if(cause & IM_RRDYB) /* pen input */ c = duart[1].data;
1990/0329		/* * Is it 4? */ if(cause & IM_XRDYB) duart[1].cmnd = DIS_TX; /* * Is it 3? */ if(cause & IM_IPC) mousebuttons((~duart[0].ipc_acr) & 7);
1990/03091		}