#include <devtty.h>
#include <stdarg.h>
-char tbuf1[TTYSIZ];
-char tbuf2[TTYSIZ];
+static char tbuf1[TTYSIZ];
+static char tbuf2[TTYSIZ];
+static char tbuf3[TTYSIZ];
+static uint8_t curtty; /* output side */
+static uint8_t inputtty; /* input side */
+static struct vt_switch ttysave[2];
+static uint8_t vtbackbuf[VT_WIDTH * VT_HEIGHT];
struct vt_repeat keyrepeat;
+uint8_t *vtbase[2] = { 0xF800, vtbackbuf };
+
__sfr __at 0xE8 tr1865_ctrl;
__sfr __at 0xE9 tr1865_baud;
__sfr __at 0xEA tr1865_status;
struct s_queue ttyinq[NUM_DEV_TTY+1] = { /* ttyinq[0] is never used */
{ NULL, NULL, NULL, 0, 0, 0 },
{ tbuf1, tbuf1, tbuf1, TTYSIZ, 0, TTYSIZ/2 },
- { tbuf2, tbuf2, tbuf2, TTYSIZ, 0, TTYSIZ/2 }
+ { tbuf2, tbuf2, tbuf2, TTYSIZ, 0, TTYSIZ/2 },
+ { tbuf3, tbuf3, tbuf3, TTYSIZ, 0, TTYSIZ/2 }
};
/* Write to system console */
uint8_t reg;
if (minor != 2)
return TTY_READY_NOW;
+ /* TODO: check model status & 0x80 for CTS flow control if appropriate */
reg = tr1865_status;
return (reg & 0x40) ? TTY_READY_NOW : TTY_READY_SOON;
}
vtq = vtbuf;
}
+static void vtexchange(void)
+{
+ /* Swap the pointers over: TRS80 video we switch by copying not
+ flipping hardware pointers */
+ uint8_t *v = vtbase[0];
+ vtbase[0] = vtbase[1];
+ vtbase[1] = v;
+ /* The cursor x/y for current tty are stale in the save area
+ so save them */
+ vt_save(&ttysave[curtty]);
+
+ /* Before we flip the memory */
+ cursor_off();
+
+ vtswap();
+
+ /* Cursor back */
+ if (!ttysave[inputtty].cursorhide)
+ cursor_on(ttysave[inputtty].cursory, ttysave[inputtty].cursorx);
+}
+
void tty_putc(uint8_t minor, unsigned char c)
{
irqflags_t irq;
tr1865_rxtx = c;
else {
irq = di();
- if (vtq == vtbuf + sizeof(vtbuf))
+ if (curtty != minor -1) {
+ /* Kill the cursor as we are changing the memory buffers. If
+ we don't do this the next cursor_off will hit the wrong
+ buffer */
+ vtflush();
+ cursor_off();
+ vt_save(&ttysave[curtty]);
+ curtty = minor - 1;
+ vt_load(&ttysave[curtty]);
+ /* Fix up the cursor */
+ if (!ttysave[curtty].cursorhide)
+ cursor_on(ttysave[curtty].cursory, ttysave[curtty].cursorx);
+ }
+ else if (vtq == vtbuf + sizeof(vtbuf))
vtflush();
*vtq++ = c;
irqrestore(irq);
uint8_t reg = tr1865_status;
if (reg & 0x80) {
reg = tr1865_rxtx;
- tty_inproc(2, reg);
+ tty_inproc(3, reg);
}
}
{
uint8_t baud;
uint8_t ctrl;
- if (minor != 2)
+ if (minor != 3)
return;
- baud = ttydata[2].termios.c_cflag & CBAUD;
+ baud = ttydata[3].termios.c_cflag & CBAUD;
if (baud > B19200) {
- ttydata[2].termios.c_cflag &= ~CBAUD;
- ttydata[2].termios.c_cflag |= B19200;
+ ttydata[3].termios.c_cflag &= ~CBAUD;
+ ttydata[3].termios.c_cflag |= B19200;
baud = B19200;
}
baud = trsbaud[baud];
tr1865_baud = baud | (baud << 4);
- ctrl = 3;
- if (ttydata[2].termios.c_cflag & PARENB) {
- if (ttydata[2].termios.c_cflag & PARODD)
+ ctrl = 3; /* DTR|RTS */
+ if (ttydata[3].termios.c_cflag & PARENB) {
+ if (ttydata[3].termios.c_cflag & PARODD)
ctrl |= 0x80;
} else
ctrl |= 0x8; /* No parity */
- ctrl |= trssize[(ttydata[2].termios.c_cflag & CSIZE) >> 4];
+ ctrl |= trssize[(ttydata[3].termios.c_cflag & CSIZE) >> 4];
tr1865_ctrl = ctrl;
}
int trstty_close(uint8_t minor)
{
- if (minor == 2 && ttydata[2].users == 0)
- tr1865_ctrl = 0; /* Drop carrier */
+ if (minor == 3 && ttydata[3].users == 0)
+ tr1865_ctrl = 0; /* Drop carrier and rts */
return tty_close(minor);
}
int tty_carrier(uint8_t minor)
{
- if (minor != 2)
+ if (minor != 3)
return 1;
if (tr1865_ctrl & 0x80)
return 1;
{'@', 'a', 'b', 'c', 'd', 'e', 'f', 'g' },
{'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o' },
{'p', 'q', 'r', 's', 't', 'u', 'v', 'w' },
- {'x', 'y', 'z', '[', '\\', ']', '^', '_' },
+ {'x', 'y', 'z', 0, 0, 0, 0, 0 },
{'0', '1', '2', '3', '4', '5', '6', '7' },
{'8', '9', ':', ';', ',', '-', '.', '/' },
- { KEY_ENTER, KEY_CLEAR, KEY_STOP, KEY_UP, KEY_DOWN, KEY_LEFT, KEY_RIGHT, ' '},
- { 0, 0, 0, 0, KEY_F1, KEY_F2, KEY_F3, 0 }
+ { KEY_ENTER, KEY_CLEAR, KEY_STOP, KEY_UP, 0/*KEY_DOWN*/, KEY_LEFT, KEY_RIGHT, ' '},
+ /* The Model 1 only has bit 0 of this for its shift key. The Model 3
+ has bit 2 for right shift. Some add-ons used bit 4 for control,
+ other things borrowed the down arrow */
+ { 0, 0, 0, 0, 0, 0, 0, 0 }
};
uint8_t shiftkeyboard[8][8] = {
{'@', 'A', 'B', 'C', 'D', 'E', 'F', 'G' },
{'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O' },
{'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W' },
- {'X', 'Y', 'Z', '{', '|', '}', '^', '_' },
+ {'X', 'Y', 'Z', 0, 0, 0, 0, 0 },
{'0', '!', '"', '#', '$', '%', '&', '\'' },
{'(', ')', '*', '+', '<', '=', '>', '?' },
- { KEY_ENTER, KEY_CLEAR, KEY_STOP, KEY_UP, KEY_DOWN, KEY_LEFT, KEY_RIGHT, ' '},
- { 0, 0, 0, 0, KEY_F1, KEY_F2, KEY_F3, 0 }
+ { KEY_ENTER, KEY_CLEAR, KEY_STOP, KEY_UP, 0/*KEY_DOWN*/, KEY_LEFT, KEY_RIGHT, ' '},
+ { 0, 0, 0, 0, 0, 0, 0, 0 }
};
static uint8_t capslock = 0;
return;
}
- if (keymap[7] & 3) { /* shift */
+ /* Only the model 3 has right shift (2) */
+ if (keymap[7] & 3) { /* shift (left/right) */
c = shiftkeyboard[keybyte][keybit];
+ /* VT switcher */
+ if (c == KEY_F1 || c == KEY_F2) {
+ if (inputtty != c - KEY_F1) {
+ inputtty = c - KEY_F1;
+ vtexchange(); /* Exchange the video and backing buffer */
+ }
+ return;
+ }
} else
c = keyboard[keybyte][keybit];
/* The keyboard lacks some rather important symbols so remap them
- with control */
- if (keymap[7] & 4) { /* control */
+ with control (down arrow)*/
+ if ((keymap[6] | keymap[7]) & 16) { /* control */
if (keymap[7] & 3) { /* shift */
if (c == '(')
c = '{';
if (c == '<')
c = '^';
} else {
- if (c == '(')
+ if (c == '8'/*'('*/)
c = '[';
- else if (c == ')')
+ else if (c == '9'/*')'*/)
c = ']';
else if (c == '-')
c = '|';
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