#include <devhd.h>
#include <devsys.h>
#include <devlpr.h>
+#include <devtty.h>
struct devsw dev_tab[] = /* The device driver switch table */
{
/* 0: /dev/fd Floppy disc block devices */
- { fd_open, no_close, fd_read, fd_write, no_ioctl },
+ { fd_open, no_close, fd_read, fd_write, no_ioctl },
/* 1: /dev/hd Hard disc block devices */
- { hd_open, no_close, hd_read, hd_write, no_ioctl },
+ { hd_open, no_close, hd_read, hd_write, no_ioctl },
/* 2: /dev/tty TTY devices */
- { tty_open, tty_close, tty_read, tty_write, tty_ioctl },
+ { tty_open, trstty_close, tty_read, tty_write, tty_ioctl },
/* 3: /dev/lpr Printer devices */
- { lpr_open, lpr_close, no_rdwr, lpr_write, no_ioctl },
+ { lpr_open, lpr_close, no_rdwr, lpr_write, no_ioctl },
/* 4: /dev/mem etc System devices (one offs) */
- { no_open, no_close, sys_read, sys_write, sys_ioctl },
+ { no_open, no_close, sys_read, sys_write, sys_ioctl },
/* Pack to 7 with nxio if adding private devices and start at 8 */
};
char tbuf1[TTYSIZ];
char tbuf2[TTYSIZ];
+__sfr __at 0xE8 tr1865_ctrl;
+__sfr __at 0xE9 tr1865_baud;
+__sfr __at 0xEA tr1865_status;
+__sfr __at 0xEB tr1865_rxtx;
+
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 },
static bool tty_writeready(uint8_t minor)
{
- minor;
- return 1; /* FIXME !! */
+ uint8_t reg;
+ if (minor == 1)
+ return 1;
+ reg = tr1865_status;
+ if (reg & 0x40)
+ return 1;
+ return 0;
}
void tty_putc(uint8_t minor, unsigned char c)
{
if (minor == 1)
vtoutput(&c, 1);
+ if (minor == 2)
+ tr1865_rxtx = c;
}
-void tty_pollirq(void)
+void tty_interrupt(void)
{
- /* Keyboard scanner */
+ uint8_t reg = tr1865_status;
+ if (reg & 0x80) {
+ reg = tr1865_rxtx;
+ tty_inproc(2, reg);
+ }
}
/* Called to set baud rate etc */
+static const uint8_t trsbaud[] = {
+ 0,0,1,2, 3,4,5,6, 7,10,14, 15
+};
+
+static const uint8_t trssize[4] = {
+ 0x00, 0x40, 0x20, 0x60
+};
+
void tty_setup(uint8_t minor)
{
- minor;
+ uint8_t baud;
+ uint8_t ctrl;
+ if (minor == 1)
+ return;
+ baud = ttydata[2].termios.c_cflag & CBAUD;
+ if (baud > B19200) {
+ ttydata[2].termios.c_cflag &= ~CBAUD;
+ ttydata[2].termios.c_cflag |= B19200;
+ baud = B19200;
+ }
+ tr1865_baud = baud | (baud << 4);
+
+ ctrl = 3;
+ if (ttydata[2].termios.c_cflag & PARENB) {
+ if (ttydata[2].termios.c_cflag & PARODD)
+ ctrl |= 0x80;
+ } else
+ ctrl |= 0x8; /* No parity */
+ ctrl |= trssize[(ttydata[2].termios.c_cflag & CSIZE) >> 4];
+ tr1865_ctrl = ctrl;
+}
+
+int trstty_close(uint8_t minor)
+{
+ if (minor == 2)
+ tr1865_ctrl = 0; /* Drop carrier */
+ return tty_close(minor);
}
-/* For the moment */
int tty_carrier(uint8_t minor)
{
- minor;
- return 1;
+ if (minor == 1)
+ return 1;
+ if (tr1865_ctrl & 0x80)
+ return 1;
+ return 0;
+}
+
+
+static uint8_t keymap[8];
+static uint8_t keyin[8];
+static uint8_t keybyte, keybit;
+static uint8_t newkey;
+static int keysdown = 0;
+static uint8_t shiftmask[8] = {
+ 0, 0, 0, 0, 0, 0, 0, 7
+};
+
+static void keyproc(void)
+{
+ int i;
+ uint8_t key;
+
+ for (i = 0; i < 8; i++) {
+ /* Set one of A0 to A7, and read the byte we get back.
+ Invert that to get a mask of pressed buttons */
+ keyin[i] = *(uint8_t *)(0xF400 | (1 << i));
+ key = keyin[i] ^ keymap[i];
+ if (key) {
+ int n;
+ int m = 1;
+ for (n = 0; n < 8; n++) {
+ if ((key & m) && (keymap[i] & m)) {
+ if (!(shiftmask[i] & m))
+ keysdown--;
+ }
+ if ((key & m) && !(keymap[i] & m)) {
+ if (!(shiftmask[i] & m))
+ keysdown++;
+ keybyte = i;
+ keybit = n;
+ newkey = 1;
+ }
+ m += m;
+
+ }
+ }
+ keymap[i] = keyin[i];
+ }
+}
+
+static uint8_t keyboard[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', '[', '\\', ']', '^', '_' },
+ {'0', '1', '2', '3', '4', '5', '6', '7' },
+ {'8', '9', ':', ';', ',', '-', '.', '/' },
+ {13, 12, 3, 0/*up*/, 0/*down*/, 8/* left */, 0/*right*/, ' '},
+ { 0, 0, 0, 0, 0xF1, 0xF2, 0xF3, 0 }
+};
+
+static uint8_t shiftkeyboard[8][10] = {
+ {'@', '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', '{', '|', '}', '^', '_' },
+ {'0', '!', '"', '#', '$', '%', '&', '\'' },
+ {'(', ')', '*', '+', '<', '=', '>', '?' },
+ {13, 12, 3, 0/*up*/, 0/*down*/, 8/* left */, 0/*right*/, ' '},
+ { 0, 0, 0, 0, 0xF1, 0xF2, 0xF3, 0 }
+};
+
+static uint8_t capslock = 0;
+
+static void keydecode(void)
+{
+ uint8_t c;
+
+ if (keybyte == 7 && keybit == 3) {
+ capslock = 1 - capslock;
+ return;
+ }
+
+ if (keymap[7] & 3) /* shift */
+ c = shiftkeyboard[keybyte][keybit];
+ else
+ c = keyboard[keybyte][keybit];
+
+ /* The keyboard lacks some rather important symbols so remap them
+ with control */
+ if (keymap[7] & 4) { /* control */
+ if (c > 31 && c < 96)
+ c &= 31;
+ if (keymap[7] & 3) {
+ if (c == '(')
+ c = '{';
+ if (c == ')')
+ c = '}';
+ if (c == '-')
+ c = '_';
+ if (c == '/')
+ c = '``';
+ if (c == '<')
+ c = '^';
+ } else {
+ if (c == '(')
+ c = '[';
+ if (c == ')')
+ c = ']';
+ if (c == '-')
+ c = '|';
+ }
+ }
+ if (capslock && c >= 'a' && c <= 'z')
+ c -= 'a' - 'A';
+ if (c)
+ tty_inproc(1, c);
+}
+
+void kbd_interrupt(void)
+{
+ newkey = 0;
+ keyproc();
+ if (keysdown < 3 && newkey)
+ keydecode();
}
public / FUZIX.git / commitdiff