| /* i1620_tty.c: IBM 1620 typewriter | |
| Copyright (c) 2002-2005, Robert M. Supnik | |
| Permission is hereby granted, free of charge, to any person obtaining a | |
| copy of this software and associated documentation files (the "Software"), | |
| to deal in the Software without restriction, including without limitation | |
| the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
| and/or sell copies of the Software, and to permit persons to whom the | |
| Software is furnished to do so, subject to the following conditions: | |
| The above copyright notice and this permission notice shall be included in | |
| all copies or substantial portions of the Software. | |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
| ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER | |
| IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
| CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
| Except as contained in this notice, the name of Robert M Supnik shall not be | |
| used in advertising or otherwise to promote the sale, use or other dealings | |
| in this Software without prior written authorization from Robert M Supnik. | |
| tty console typewriter | |
| 22-Dec-02 RMS Added break test | |
| */ | |
| #include "i1620_defs.h" | |
| #define TTO_COLMAX 80 | |
| int32 tto_col = 0; | |
| extern uint8 M[MAXMEMSIZE]; | |
| extern uint8 ind[NUM_IND]; | |
| extern UNIT cpu_unit; | |
| extern uint32 io_stop; | |
| void tti_unlock (void); | |
| t_stat tti_rnum (int8 *c); | |
| t_stat tti_ralp (int8 *c); | |
| t_stat tti_read (int8 *c); | |
| t_stat tto_num (uint32 pa, uint32 len); | |
| t_stat tto_write (uint32 c); | |
| t_stat tty_svc (UNIT *uptr); | |
| t_stat tty_reset (DEVICE *dptr); | |
| /* TTY data structures | |
| tty_dev TTY device descriptor | |
| tty_unit TTY unit descriptor | |
| tty_reg TTY register list | |
| */ | |
| UNIT tty_unit = { UDATA (&tty_svc, 0, 0), KBD_POLL_WAIT }; | |
| REG tty_reg[] = { | |
| { DRDATA (COL, tto_col, 7) }, | |
| { DRDATA (TIME, tty_unit.wait, 24), REG_NZ + PV_LEFT }, | |
| { NULL } | |
| }; | |
| DEVICE tty_dev = { | |
| "TTY", &tty_unit, tty_reg, NULL, | |
| 1, 10, 31, 1, 8, 7, | |
| NULL, NULL, &tty_reset, | |
| NULL, NULL, NULL | |
| }; | |
| /* Data tables */ | |
| /* Keyboard to numeric */ | |
| const char *tti_to_num = "0123456789'=@:;\""; | |
| /* Keyboard to alphameric (digit pair) - translates LC to UC */ | |
| const int8 tti_to_alp[128] = { | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* 00 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* 10 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| 0x00, 0x02, 0x0F, -1, 0x13, -1, -1, -1, /* !"#$%&' */ | |
| 0x24, 0x04, 0x14, 0x10, 0x23, 0x20, 0x03, 0x21, /* ()*+,-./ */ | |
| 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 01234567 */ | |
| 0x78, 0x79, -1, -1, -1, 0x33, -1, -1, /* 89:;<=>? */ | |
| 0x34, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* @ABCDEFG */ | |
| 0x48, 0x49, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, /* HIJKLMNO */ | |
| 0x57, 0x58, 0x59, 0x62, 0x63, 0x64, 0x65, 0x66, /* PQRSTUVW */ | |
| 0x67, 0x68, 0x69, -1, -1, -1, -1, -1, /* XYZ[\]^_ */ | |
| -1, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* abcdefg */ | |
| 0x48, 0x49, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, /* hijklmno */ | |
| 0x57, 0x58, 0x59, 0x62, 0x63, 0x64, 0x65, 0x66, /* pqrstuvw */ | |
| 0x67, 0x68, 0x69, -1, -1, -1, -1, -1 /* xyz */ | |
| }; | |
| /* Numeric (digit) to typewriter */ | |
| const char num_to_tto[16] = { | |
| '0', '1', '2', '3', '4', '5', '6', '7', | |
| '8', '9', '\'', '=', '@', ':', ';', '"' | |
| }; | |
| /* Alphameric (digit pair) to typewriter */ | |
| const char alp_to_tto[256] = { | |
| ' ', -1, '?', '.', ')', -1, -1, -1, /* 00 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| '+', -1, '!', '$', '*', ' ', -1, -1, /* 10 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| '-', '/', '\'', ',', '(', -1, -1, -1, /* 20 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, -1, '0', '=', '@', ':', -1, -1, /* 30 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, 'A', 'B', 'C', 'D', 'E', 'F', 'G', /* 40 */ | |
| 'H', 'I', -1, -1, -1, -1, -1, -1, | |
| '-', 'J', 'K', 'L', 'M', 'N', 'O', 'P', /* 50 */ | |
| 'Q', 'R', -1, -1, -1, -1, -1, -1, | |
| -1, '/', 'S', 'T', 'U', 'V', 'W', 'X', /* 60 */ | |
| 'Y', 'Z', -1, -1, -1, -1, -1, -1, | |
| '0', '1', '2', '3', '4', '5', '6', '7', /* 70 */ | |
| '8', '9', -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* 80 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* 90 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* A0 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* B0 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* C0 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* D0 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* E0 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1, | |
| -1, -1, -1, -1, -1, -1, -1, -1, /* F0 */ | |
| -1, -1, -1, -1, -1, -1, -1, -1 | |
| }; | |
| /* Terminal IO | |
| - On input, parity errors cannot occur. | |
| - On input, release-start does NOT cause a record mark to be stored. | |
| - On output, invalid characters type an invalid character and set WRCHK. | |
| If IO stop is set, the system halts at the end of the operation. | |
| */ | |
| t_stat tty (uint32 op, uint32 pa, uint32 f0, uint32 f1) | |
| { | |
| t_addr i; | |
| uint8 d; | |
| int8 ttc; | |
| t_stat r, inv = SCPE_OK; | |
| switch (op) { /* case on op */ | |
| case OP_K: /* control */ | |
| switch (f1) { /* case on control */ | |
| case 1: /* space */ | |
| tto_write (' '); | |
| break; | |
| case 2: /* return */ | |
| tto_write ('\r'); | |
| break; | |
| case 3: /* backspace */ | |
| if ((cpu_unit.flags & IF_MII) == 0) return STOP_INVFNC; | |
| tto_write ('\b'); | |
| break; | |
| case 4: /* index */ | |
| if ((cpu_unit.flags & IF_MII) == 0) return STOP_INVFNC; | |
| tto_write ('\n'); | |
| break; | |
| case 8: /* tab */ | |
| tto_write ('\t'); | |
| break; | |
| default: | |
| return STOP_INVFNC; | |
| } | |
| return SCPE_OK; | |
| case OP_RN: /* read numeric */ | |
| tti_unlock (); /* unlock keyboard */ | |
| for (i = 0; i < MEMSIZE; i++) { /* (stop runaway) */ | |
| r = tti_rnum (&ttc); /* read char */ | |
| if (r != SCPE_OK) return r; /* error? */ | |
| if (ttc == 0x7F) return SCPE_OK; /* end record? */ | |
| M[pa] = ttc & (FLAG | DIGIT); /* store char */ | |
| PP (pa); /* incr mem addr */ | |
| } | |
| break; | |
| case OP_RA: /* read alphameric */ | |
| tti_unlock (); | |
| for (i = 0; i < MEMSIZE; i = i + 2) { /* (stop runaway) */ | |
| r = tti_ralp (&ttc); /* read char */ | |
| if (r != SCPE_OK) return r; /* error? */ | |
| if (ttc == 0x7F) return SCPE_OK; /* end record? */ | |
| M[pa] = (M[pa] & FLAG) | (ttc & DIGIT); /* store 2 digits */ | |
| M[pa - 1] = (M[pa - 1] & FLAG) | ((ttc >> 4) & DIGIT); | |
| pa = ADDR_A (pa, 2); /* incr mem addr */ | |
| } | |
| break; | |
| case OP_DN: | |
| return tto_num (pa, 20000 - (pa % 20000)); /* dump numeric */ | |
| case OP_WN: | |
| return tto_num (pa, 0); /* type numeric */ | |
| case OP_WA: | |
| for (i = 0; i < MEMSIZE; i = i + 2) { /* stop runaway */ | |
| d = M[pa] & DIGIT; /* get digit */ | |
| if ((d & 0xA) == REC_MARK) /* 8-2 char? */ | |
| CRETIOE (io_stop, inv); /* end record */ | |
| d = ((M[pa - 1] & DIGIT) << 4) | d; /* get digit pair */ | |
| ttc = alp_to_tto[d]; /* translate */ | |
| if (ttc < 0) { /* bad char? */ | |
| ind[IN_WRCHK] = 1; /* set write check */ | |
| inv = STOP_INVCHR; /* set return status */ | |
| } | |
| tto_write (ttc & 0x7F); /* write */ | |
| pa = ADDR_A (pa, 2); /* incr mem addr */ | |
| } | |
| break; | |
| default: /* invalid function */ | |
| return STOP_INVFNC; | |
| } | |
| return STOP_RWRAP; | |
| } | |
| /* Read numerically - cannot generate parity errors */ | |
| t_stat tti_rnum (int8 *c) | |
| { | |
| int8 raw, flg = 0; | |
| char *cp; | |
| t_stat r; | |
| *c = -1; /* no char yet */ | |
| do { | |
| r = tti_read (&raw); /* get char */ | |
| if (r != SCPE_OK) return r; /* error? */ | |
| if (raw == '\r') *c = 0x7F; /* return? mark */ | |
| else if (raw == '~') flg = FLAG; /* flag? mark */ | |
| else if (cp = strchr (tti_to_num, raw)) /* legal? */ | |
| *c = ((int8) (cp - tti_to_num)) | flg; /* assemble char */ | |
| else raw = 007; /* beep! */ | |
| tto_write (raw); /* echo */ | |
| } while (*c == -1); | |
| return SCPE_OK; | |
| } | |
| /* Read alphamerically - cannot generate parity errors */ | |
| t_stat tti_ralp (int8 *c) | |
| { | |
| int8 raw; | |
| t_stat r; | |
| *c = -1; /* no char yet */ | |
| do { | |
| r = tti_read (&raw); /* get char */ | |
| if (r != SCPE_OK) return r; /* error? */ | |
| if (raw == '\r') *c = 0x7F; /* return? mark */ | |
| else if (tti_to_alp[raw] >= 0) /* legal char? */ | |
| *c = tti_to_alp[raw]; /* xlate */ | |
| else raw = 007; /* beep! */ | |
| tto_write (raw); /* echo */ | |
| } while (*c == -1); | |
| return SCPE_OK; | |
| } | |
| /* Read from keyboard */ | |
| t_stat tti_read (int8 *c) | |
| { | |
| int32 t; | |
| do { | |
| t = sim_poll_kbd (); /* get character */ | |
| } while ((t == SCPE_OK) || (t & SCPE_BREAK)); /* ignore break */ | |
| if (t < SCPE_KFLAG) return t; /* error? */ | |
| *c = t & 0177; /* store character */ | |
| return SCPE_OK; | |
| } | |
| /* Write numerically - cannot generate parity errors */ | |
| t_stat tto_num (uint32 pa, uint32 len) | |
| { | |
| t_stat r; | |
| uint8 d; | |
| uint32 i, end; | |
| end = pa + len; | |
| for (i = 0; i < MEMSIZE; i++) { /* (stop runaway) */ | |
| d = M[pa]; /* get char */ | |
| if (len? (pa >= end): /* dump: end reached? */ | |
| ((d & REC_MARK) == REC_MARK)) /* write: rec mark? */ | |
| return SCPE_OK; /* end operation */ | |
| if (d & FLAG) tto_write ('~'); /* flag? */ | |
| r = tto_write (num_to_tto[d & DIGIT]); /* write */ | |
| if (r != SCPE_OK) return r; /* error? */ | |
| PP (pa); /* incr mem addr */ | |
| } | |
| return STOP_RWRAP; | |
| } | |
| /* Write, maintaining position */ | |
| t_stat tto_write (uint32 c) | |
| { | |
| int32 rpt; | |
| if (c == '\t') { /* tab? */ | |
| rpt = 8 - (tto_col % 8); /* distance to next */ | |
| tto_col = tto_col + rpt; /* tab over */ | |
| while (rpt-- > 0) sim_putchar (' '); /* use spaces */ | |
| return SCPE_OK; | |
| } | |
| if (c == '\r') { /* return? */ | |
| sim_putchar ('\r'); /* crlf */ | |
| sim_putchar ('\n'); | |
| tto_col = 0; /* clear colcnt */ | |
| return SCPE_OK; | |
| } | |
| if ((c == '\n') || (c == 007)) { /* non-spacing? */ | |
| sim_putchar (c); | |
| return SCPE_OK; | |
| } | |
| if (c == '\b') tto_col = tto_col? tto_col - 1: 0; /* backspace? */ | |
| else tto_col++; /* normal */ | |
| if (tto_col > TTO_COLMAX) { /* line wrap? */ | |
| sim_putchar ('\r'); | |
| sim_putchar ('\n'); | |
| tto_col = 0; | |
| } | |
| sim_putchar (c); | |
| return SCPE_OK; | |
| } | |
| /* Unit service - polls for WRU */ | |
| t_stat tty_svc (UNIT *uptr) | |
| { | |
| int32 temp; | |
| sim_activate (&tty_unit, tty_unit.wait); /* continue poll */ | |
| if ((temp = sim_poll_kbd ()) < SCPE_KFLAG) return temp; /* no char or error? */ | |
| return SCPE_OK; | |
| } | |
| /* Reset routine */ | |
| t_stat tty_reset (DEVICE *dptr) | |
| { | |
| sim_activate (&tty_unit, tty_unit.wait); /* activate poll */ | |
| tto_col = 0; | |
| return SCPE_OK; | |
| } | |
| /* TTI unlock - signals that we are ready for keyboard input */ | |
| void tti_unlock (void) | |
| { | |
| tto_write ('`'); | |
| return; | |
| } |