0a33758e47
The B5500 simulator supports the following peripherals.
Two CPUs with between 4K and 32K of memory. The second CPU can be
enabled with "set cpu1 enable". "set cpu1 disable" disables the
second CPU.
Up to 4 floating IO channels. Individual channels can be enabled with
"set io# enable", or "set io# disable".
There are two card readers. The second reader is disabled by default.
There is one Card Punch.
The Card reader and Card Punch support the following options:
set cr format=
auto - will automatically determine the format based on the
text it recieves.
text Text based cards. Tabs are converted to the correct
number of spaces. A record of
~raw octal will enter a binary card.
~eor will enter a 7/8/9 punch in column 1.
~eof will enter a 6/7/9 punch in column 1.
~eoi will enter a 6/7/8/9 punch in column 1.
~~ will enter a ~ as the first character.
bin Binary Card format:
Each record 160 characters.
First characters 6789----
Second character 21012345
111
Top 4 bits of second character are 0.
It is unlikely that any other format could
look like this.
bcd BCD Format:
Each record variable length (80 chars or less).
Record mark has bit 7 set.
Bit 6 is even parity.
Bits 5-0 are character.
cbn CBN Format:
Each record 160 charaters.
First char has bit 7 set. Rest set to 0.
Bit 6 is odd parity.
Bit 5-0 of first character are top 6 bits
of card.
Bit 5-0 of second character are lower 6 bits
of card.
For punch format of auto if the card can't be converted to text it is
output as a raw record.
There are two line printers, the second one is disabled by default. The LP
supports the option "set lp# linesperpage=#" which determines when the
printer will force out a page break.
There are up to 16 mag tape drives, the format is controlled by the standard
simh format control for tapes. These are 6 bit tapes, 1 character per record
with parity. Units 8-16 are disabled by default.
There are up to two drum units DR0 and DR1. These can either be attached
to a file or set to AUXMEM. Setting to AUXMEM causes them to exist only
during the given simh run. Setting back to DRUM will clear whatever was
stored on the drum. To enable use of DRUM on XV the following options should
be turned on "DRA,DRB,CODEOLAY,DATAOLAY". MCP will then use the drum as a
overlay device instead of the disk system.
Disks can be attached to the various ESU's, ESU0-9 are on DKA by default,
ESU10-19 are on DKB. If "set dk1 dfx" is set, then ESU10-19 are not used and
the disks are shared by both DKA and DKB. To use more then 10 ESU's in a non
shared mode, a new version of MCP must be created. MCP must be compiled with
DFX option set to false. For MCP XV DKBNODFX must also be set to true. ESU units
can be set to MODI or MODIB. MODIB will double the size of the drive.
The DTC can be attached to a telnet port with "attach dtc #" to enable dialup
access to the sim.
The loader card for the card reader is:
~raw0104441100204231524012004000004444550211002041317700000000000024045303040243
00050000006501004131011041310055005500000062005042310000006600304231000000720010
42310000007675610165001002310010413100040107202500440106202533554061256520252265
20251765202514655355536117650000004401062025155522610165225572610465044101160500
4131
This card should be all in one line.
895 lines
32 KiB
C
895 lines
32 KiB
C
/* b5500_dtc.c: Burrioughs 5500 Data Communications
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Copyright (c) 2016, Richard Cornwell
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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RICHARD CORNWELL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "b5500_defs.h"
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#include "sim_timer.h"
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#include "sim_sock.h"
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#include "sim_tmxr.h"
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#if (NUM_DEVS_DTC > 0)
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#define UNIT_DTC UNIT_ATTABLE | UNIT_DISABLE | UNIT_IDLE
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#define DTC_MLINES 32 /* mux lines */
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#define DTC_TLINES 8
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#define DTC_BUFSIZ 112 /* max chan transfer */
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#define DTCSTA_READ 000400 /* Read flag */
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#define DTCSTA_BINARY 004000 /* Bypass translation */
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#define DTCSTA_INHIBIT 040000 /* Interrogate or Read/Write */
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/* Flags in WC Field */
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#define DTCSTA_TTU 0740 /* TTU number */
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#define DTCSTA_GM 0020 /* Ignore GM on transfer */
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#define DTCSTA_BUF 0017 /* Buffer Number */
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/* Interrogate
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D28 - Busy DEV_ERROR
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D27 - Write Ready DEV_EOF
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D24 - Read Ready DEV_IORD */
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/* Abnormal flag = DEV_WCFLG */
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/* Buffer full/GM flag = D25 */
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/* Buffer wrong state = DEV_EOF D27 */
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/* Buffer Busy = DEV_ERROR D28 */
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/* DTC not ready or buffer, DEV_NOTRDY D30 */
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/* in u3 is device address */
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/* in u4 is current address */
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/* in u5 Line number */
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#define DTC_CHAN 000003 /* Channel number */
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#define DTC_RD 000004 /* Executing a read command */
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#define DTC_WR 000010 /* Executing a write command */
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#define DTC_INQ 000020 /* Executing an interragte command */
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#define DTC_RDY 000040 /* Device Ready */
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#define DTC_BIN 000100 /* Transfer in Binary mode */
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#define DTC_IGNGM 000200 /* Ignore GM on transfer */
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#define BufNotReady 0 /* Device not connected */
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#define BufIdle 1 /* Buffer in Idle state */
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#define BufInputBusy 2 /* Buffer being filled */
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#define BufReadRdy 3 /* Buffer ready to read */
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#define BufWrite 4 /* Buffer writing */
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#define BufWriteRdy 5 /* Buffer ready for write */
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#define BufOutBusy 6 /* Buffer outputing */
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#define BufRead 7 /* Buffer reading */
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#define BufSMASK 7 /* Buffer state mask */
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#define BufAbnormal 010 /* Abnornmal flag */
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#define BufGM 020 /* Buffer term with GM */
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#define BufIRQ 040 /* Buffer ready */
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/* Not connected line:
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BufNotReady.
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Write:
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BufNotReady -> 0x34 (EOF,ERROR,NR)
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BufIdle -> BufWrite (set GM if set.)
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BufReadReady -> 0x20 (EOF).
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BufInputBusy, BufWrite -> 0x30
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-> 0x34 (EOF,ERROR)
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BufWriteRdy -> BufWrite.
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Write Done:
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BufOutBusy.
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Read:
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BufNotReady -> 0x34 (EOF,ERROR,NR)
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BufIdle -> 0x34 (EOF,ERROR,NR)
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BufInputBusy, BufOutBusy -> 0x30 (EOF,ERROR)
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BufReadRdy -> return buffer. -> BufIdle
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Interogate:
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return BufWriteRdy/BufWriteFull
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return BufReadRdy.
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Recieve Char:
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Connect:
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State BufWriteRdy.
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Output Done:
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BufGM -> BufIdle
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-> BufWriteRdy
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*/
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/* Translate chars
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output:
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! -> LF.
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< -> RO.
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> -> X-OFF
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} -> Disconnect line
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~ -> End of message.
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input:
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~/_/CR -> End of message.
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BufReadRdy, IRQ.
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</BS -> Back up one char.
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!/ -> Disconnect insert }
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BufReadRdy, IRQ.
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^B -> Clear input.
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BufIdle
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^E -> set abnormal, buffer to BufWriteRdy.
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^L -> Clear input.
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BufIdle
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? -> Set abnormal
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Char: Buf to BufInputBsy. Insert char.
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if Fullbuff, BufReadRdy, IRQ,
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*/
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t_stat dtc_srv(UNIT *);
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t_stat dtco_srv(UNIT *);
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t_stat dtc_attach(UNIT *, char *);
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t_stat dtc_detach(UNIT *);
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t_stat dtc_reset(DEVICE *);
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t_stat dtc_setnl (UNIT *, int32, char *, void *);
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t_stat dtc_set_log (UNIT *, int32, char *, void *);
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t_stat dtc_set_nolog (UNIT *, int32, char *, void *);
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t_stat dtc_show_log (FILE *, UNIT *, int32, void *);
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t_stat dtc_help(FILE *, DEVICE *, UNIT *, int32, const char *);
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t_stat dtc_help_attach (FILE *, DEVICE *, UNIT *, int32, const char *);
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const char *dtc_description(DEVICE *);
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int32 tmxr_poll;
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uint8 dtc_buf[DTC_MLINES][DTC_BUFSIZ];
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TMLN dtc_ldsc[DTC_MLINES]; /* line descriptors */
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TMXR dtc_desc = { DTC_TLINES, 0, 0, dtc_ldsc }; /* mux descriptor */
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uint8 dtc_lstatus[DTC_MLINES]; /* Line status */
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uint16 dtc_bufptr[DTC_MLINES]; /* Buffer pointer */
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uint16 dtc_bsize[DTC_MLINES]; /* Buffer size */
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uint16 dtc_blimit[DTC_MLINES]; /* Buffer size */
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MTAB dtc_mod[] = {
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{ MTAB_XTD|MTAB_VDV|MTAB_VALR, 1, NULL, "DISCONNECT",
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&tmxr_dscln, NULL, &dtc_desc, "Disconnect a specific line" },
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{ UNIT_ATT, UNIT_ATT, "SUMMARY", NULL,
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NULL, &tmxr_show_summ, (void *) &dtc_desc, "Display a summary of line states" },
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{ MTAB_XTD|MTAB_VDV|MTAB_NMO, 1, "CONNECTIONS", NULL,
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NULL, &tmxr_show_cstat, (void *) &dtc_desc, "Display current connections" },
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{ MTAB_XTD|MTAB_VDV|MTAB_NMO, 0, "STATISTICS", NULL,
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NULL, &tmxr_show_cstat, (void *) &dtc_desc, "Display multiplexer statistics" },
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{ MTAB_XTD|MTAB_VDV|MTAB_VALR, 0, "LINES", "LINES=n",
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&dtc_setnl, &tmxr_show_lines, (void *) &dtc_desc, "Display number of lines" },
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{ MTAB_XTD|MTAB_VDV|MTAB_NC, 0, NULL, "LOG=n=file",
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&dtc_set_log, NULL, &dtc_desc },
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{ MTAB_XTD|MTAB_VDV|MTAB_VALR, 0, NULL, "NOLOG",
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&dtc_set_nolog, NULL, &dtc_desc, "Disable logging on designated line" },
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{ MTAB_XTD|MTAB_VDV|MTAB_NMO, 0, "LOG", NULL,
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NULL, &dtc_show_log, &dtc_desc, "Display logging for all lines" },
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{0}
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};
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UNIT dtc_unit[] = {
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{UDATA(&dtc_srv, UNIT_DTC, 0)}, /* DTC */
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{UDATA(&dtco_srv, UNIT_DIS, 0)}, /* DTC server process */
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};
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DEVICE dtc_dev = {
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"DTC", dtc_unit, NULL, dtc_mod,
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2, 8, 15, 1, 8, 64,
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NULL, NULL, &dtc_reset, NULL, &dtc_attach, &dtc_detach,
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NULL, DEV_DISABLE | DEV_DEBUG | DEV_MUX, 0, dev_debug,
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NULL, NULL, &dtc_help, &dtc_help_attach, (void *)&dtc_desc,
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&dtc_description
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};
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/* Start off a terminal controller command */
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t_stat dtc_cmd(uint16 cmd, uint16 dev, uint8 chan, uint16 *wc)
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{
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UNIT *uptr;
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int ttu;
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int buf;
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uptr = &dtc_unit[0];
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/* If unit disabled return error */
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if (uptr->flags & UNIT_DIS)
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return SCPE_NODEV;
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if ((uptr->flags & UNIT_ATT) == 0)
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return SCPE_UNATT;
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/* Check if drive is ready to recieve a command */
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if ((uptr->u5 & DTC_RDY) == 0)
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return SCPE_BUSY;
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uptr->u5 = chan;
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ttu = (*wc & DTCSTA_TTU) >> 5;
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buf = (*wc & DTCSTA_BUF);
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/* Set the Terminal unit. */
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if (ttu == 0)
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uptr->u4 = -1;
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else {
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uptr->u4 = buf + ((ttu-1) * 15);
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}
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if (*wc & DTCSTA_GM)
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uptr->u5 |= DTC_IGNGM;
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if (cmd & DTCSTA_READ)
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uptr->u5 |= DTC_RD;
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else if (cmd & DTCSTA_INHIBIT)
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uptr->u5 |= DTC_INQ;
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else
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uptr->u5 |= DTC_WR;
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if (cmd & DTCSTA_BINARY)
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uptr->u5 |= DTC_BIN;
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sim_debug(DEBUG_CMD, &dtc_dev, "Datacomm access %s %06o %d %04o\n",
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(uptr->u5 & DTC_RD) ? "read" : ((uptr->u5 & DTC_INQ) ? "inq" :
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((uptr->u5 & DTC_WR) ? "write" : "unknown")),
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uptr->u5, uptr->u4, *wc);
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sim_activate(uptr, 5000);
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return SCPE_OK;
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}
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/* Handle processing terminal controller commands */
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t_stat dtc_srv(UNIT * uptr)
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{
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int chan = uptr->u5 & DTC_CHAN;
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uint8 ch;
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int ttu;
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int buf;
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int i;
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int line = uptr->u4;
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/* Process interrage command */
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if (uptr->u5 & DTC_INQ) {
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if (line == -1) {
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buf = -1;
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for(i = 0; i < DTC_MLINES; i++) {
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if (dtc_lstatus[i]& BufIRQ) {
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if ((dtc_lstatus[i] & BufSMASK) == BufReadRdy)
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buf = i;
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if ((dtc_lstatus[i] & BufSMASK) == BufWriteRdy ||
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(dtc_lstatus[i] & BufSMASK) == BufIdle) {
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line = i;
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break;
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}
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}
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}
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sim_debug(DEBUG_DETAIL, &dtc_dev, "Datacomm inqury found %d %d ",
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line, buf);
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if (line != -1) {
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chan_set_eof(chan);
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sim_debug(DEBUG_DETAIL, &dtc_dev, " writerdy ");
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} else if (buf != -1) {
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chan_set_read(chan);
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sim_debug(DEBUG_DETAIL, &dtc_dev, " readrdy ");
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line = buf;
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}
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if (line != -1) {
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if (dtc_lstatus[line] & BufAbnormal) {
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chan_set_wcflg(chan);
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sim_debug(DEBUG_DETAIL, &dtc_dev, " abnormal ");
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}
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dtc_lstatus[line] &= ~BufIRQ;
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}
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sim_debug(DEBUG_DETAIL, &dtc_dev, " %03o ", dtc_lstatus[i]);
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} else {
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if (line > dtc_desc.lines) {
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chan_set_notrdy(chan);
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} else {
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switch(dtc_lstatus[line] & BufSMASK) {
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case BufReadRdy:
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chan_set_read(chan);
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sim_debug(DEBUG_DETAIL, &dtc_dev, " readrdy ");
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break;
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case BufWriteRdy:
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chan_set_eof(chan);
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sim_debug(DEBUG_DETAIL, &dtc_dev, " writerdy ");
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break;
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default:
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chan_set_error(chan);
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sim_debug(DEBUG_DETAIL, &dtc_dev, " busy ");
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break;
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}
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}
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if (dtc_lstatus[line] & BufAbnormal) {
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chan_set_wcflg(chan);
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sim_debug(DEBUG_DETAIL, &dtc_dev, " abnormal ");
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}
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dtc_lstatus[line] &= ~BufIRQ;
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chan_set_wc(uptr->u4, 0);
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chan_set_end(chan);
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sim_debug(DEBUG_DETAIL, &dtc_dev, " %03o ", dtc_lstatus[line]);
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}
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if (line != -1) {
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for (ttu = 1; line > 15; ttu++)
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line -= 15;
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} else {
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ttu = line = 0;
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}
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chan_set_wc(chan, (ttu << 5) | line);
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chan_set_end(chan);
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uptr->u5 = DTC_RDY;
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sim_debug(DEBUG_DETAIL, &dtc_dev, "Datacomm inqury %d %d\n",
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ttu, line);
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}
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/* Process for each unit */
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if (uptr->u5 & DTC_WR) {
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if (line > dtc_desc.lines || line == -1) {
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sim_debug(DEBUG_DETAIL, &dtc_dev, "Datacomm write invalid %d\n",
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line);
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chan_set_notrdy(chan);
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chan_set_end(chan);
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uptr->u5 = DTC_RDY;
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return SCPE_OK;
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}
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/* Validate that we can send data to buffer */
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i = dtc_lstatus[line] & BufSMASK;
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switch(i) {
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case BufNotReady:
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chan_set_notrdy(chan);
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case BufInputBusy:
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case BufRead:
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case BufReadRdy:
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chan_set_error(chan);
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case BufOutBusy:
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chan_set_eof(chan);
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chan_set_end(chan);
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uptr->u5 = DTC_RDY;
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sim_debug(DEBUG_DETAIL, &dtc_dev, "Datacomm write busy %d %d\n",
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line, i);
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return SCPE_OK;
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/* Ok to start filling */
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case BufIdle:
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case BufWriteRdy:
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dtc_lstatus[line] = BufWrite;
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dtc_bufptr[line] = 0;
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dtc_bsize[line] = 0;
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sim_debug(DEBUG_DETAIL, &dtc_dev, "Datacomm write start %d\n",
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line);
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break;
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/* Continue filling */
|
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case BufWrite:
|
||
break;
|
||
}
|
||
|
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if (chan_read_char(chan, &ch, dtc_bufptr[line] >= dtc_blimit[line])) {
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sim_debug(DEBUG_DETAIL, &dtc_dev, "Datacomm write done %d %d ",
|
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line, dtc_bufptr[line]);
|
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if (dtc_lstatus[line] & BufAbnormal) {
|
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chan_set_wcflg(chan);
|
||
}
|
||
dtc_lstatus[line] = BufOutBusy;
|
||
/* Check if we filled up buffer */
|
||
if (dtc_bufptr[line] >= dtc_blimit[line]) {
|
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chan_set_gm(chan);
|
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sim_debug(DEBUG_DETAIL, &dtc_dev, "full ");
|
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} else {
|
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dtc_lstatus[line] |= BufGM;
|
||
sim_debug(DEBUG_DETAIL, &dtc_dev, "gm ");
|
||
}
|
||
sim_debug(DEBUG_DETAIL, &dtc_dev, "\n");
|
||
dtc_bsize[line] = dtc_bufptr[line];
|
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dtc_bufptr[line] = 0;
|
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chan_set_end(chan);
|
||
uptr->u5 = DTC_RDY;
|
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return SCPE_OK;
|
||
} else {
|
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dtc_buf[line][dtc_bufptr[line]++] = ch & 077;
|
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sim_debug(DEBUG_DATA, &dtc_dev, "Datacomm write data %d %02o %d\n",
|
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line, ch&077, dtc_bufptr[line]);
|
||
}
|
||
sim_activate(uptr, 5000);
|
||
}
|
||
|
||
if (uptr->u5 & DTC_RD) {
|
||
if (line > dtc_desc.lines || line == -1) {
|
||
sim_debug(DEBUG_DETAIL, &dtc_dev, "Datacomm read nothing %d\n",
|
||
line);
|
||
chan_set_notrdy(chan);
|
||
chan_set_end(chan);
|
||
uptr->u5 = DTC_RDY;
|
||
return SCPE_OK;
|
||
}
|
||
/* Validate that we can send data to buffer */
|
||
i = dtc_lstatus[line] & BufSMASK;
|
||
switch(i) {
|
||
case BufNotReady:
|
||
chan_set_notrdy(chan);
|
||
case BufInputBusy:
|
||
chan_set_error(chan);
|
||
case BufWriteRdy:
|
||
case BufOutBusy:
|
||
case BufIdle:
|
||
case BufWrite:
|
||
chan_set_eof(chan);
|
||
chan_set_end(chan);
|
||
uptr->u5 = DTC_RDY;
|
||
sim_debug(DEBUG_DETAIL, &dtc_dev, "Datacomm read busy %d %d\n",
|
||
line, i);
|
||
return SCPE_OK;
|
||
|
||
/* Ok to start filling */
|
||
case BufReadRdy:
|
||
dtc_lstatus[line] = (dtc_lstatus[line] & 030) | BufRead;
|
||
dtc_bufptr[line] = 0;
|
||
sim_debug(DEBUG_DETAIL, &dtc_dev, "Datacomm read starting %d\n",
|
||
line);
|
||
break;
|
||
|
||
/* Continue filling */
|
||
case BufRead:
|
||
break;
|
||
}
|
||
|
||
ch = dtc_buf[line][dtc_bufptr[line]++];
|
||
/* If no buffer, error out */
|
||
if (chan_write_char(chan, &ch, dtc_bufptr[line] >= dtc_bsize[line])) {
|
||
/* Check if we filled up buffer */
|
||
if (dtc_lstatus[line] & BufGM) {
|
||
chan_set_gm(chan);
|
||
sim_debug(DEBUG_DETAIL, &dtc_dev, "gm ");
|
||
}
|
||
if (dtc_lstatus[line] & BufAbnormal)
|
||
chan_set_wcflg(chan);
|
||
if (dtc_ldsc[line].conn == 0) /* connected? */
|
||
dtc_lstatus[line] = BufNotReady;
|
||
else
|
||
dtc_lstatus[line] = BufIdle;
|
||
dtc_bsize[line] = 0;
|
||
chan_set_end(chan);
|
||
uptr->u5 = DTC_RDY;
|
||
sim_debug(DEBUG_DETAIL, &dtc_dev, "Datacomm read done %d\n",
|
||
line);
|
||
return SCPE_OK;
|
||
} else {
|
||
sim_debug(DEBUG_DATA, &dtc_dev, "Datacomm read data %d %02o %d\n",
|
||
line, ch & 077, dtc_bufptr[line]);
|
||
}
|
||
sim_activate(uptr, 5000);
|
||
}
|
||
return SCPE_OK;
|
||
}
|
||
|
||
/* Unit service - receive side
|
||
|
||
Poll all active lines for input
|
||
Poll for new connections */
|
||
|
||
t_stat
|
||
dtco_srv(UNIT * uptr)
|
||
{
|
||
int c, ln, t, c1;
|
||
|
||
sim_clock_coschedule(uptr, tmxr_poll);
|
||
ln = tmxr_poll_conn(&dtc_desc); /* look for connect */
|
||
if (ln >= 0) { /* got one? */
|
||
dtc_blimit[ln] = DTC_BUFSIZ-1;
|
||
dtc_lstatus[ln] = BufIRQ|BufAbnormal|BufWriteRdy;
|
||
IAR |= IRQ_12;
|
||
sim_debug(DEBUG_DETAIL, &dtc_dev, "Datacomm connect %d\n", ln);
|
||
}
|
||
|
||
/* For each line that is in idle state enable recieve */
|
||
for (ln = 0; ln < dtc_desc.lines; ln++) {
|
||
if (dtc_ldsc[ln].conn &&
|
||
(dtc_lstatus[ln] & BufSMASK) == BufIdle) {
|
||
dtc_ldsc[ln].rcve = 1;
|
||
}
|
||
}
|
||
tmxr_poll_rx(&dtc_desc); /* poll for input */
|
||
for (ln = 0; ln < DTC_MLINES; ln++) { /* loop thru mux */
|
||
/* Check for disconnect */
|
||
if (dtc_ldsc[ln].conn == 0) { /* connected? */
|
||
switch(dtc_lstatus[ln] & BufSMASK) {
|
||
case BufIdle: /* Idle, throw in EOT */
|
||
case BufWriteRdy: /* Awaiting output, terminate */
|
||
dtc_bufptr[ln] = 0;
|
||
case BufInputBusy: /* reading, terminate with EOT */
|
||
dtc_buf[ln][dtc_bufptr[ln]++] = 017;
|
||
dtc_bsize[ln] = dtc_bufptr[ln];
|
||
dtc_lstatus[ln] = BufIRQ|BufAbnormal|BufReadRdy;
|
||
IAR |= IRQ_12;
|
||
break;
|
||
case BufOutBusy: /* Terminate Output */
|
||
dtc_lstatus[ln] = BufIRQ|BufIdle;
|
||
dtc_bsize[ln] = 0;
|
||
IAR |= IRQ_12;
|
||
break;
|
||
default: /* Other cases, ignore until
|
||
in better state */
|
||
break;
|
||
break;
|
||
}
|
||
continue; /* Skip if not connected */
|
||
}
|
||
switch(dtc_lstatus[ln] & BufSMASK) {
|
||
case BufIdle:
|
||
/* If we have any data to receive */
|
||
if (tmxr_rqln(&dtc_ldsc[ln]) > 0)
|
||
dtc_lstatus[ln] = BufInputBusy;
|
||
else
|
||
break; /* Nothing to do */
|
||
sim_debug(DEBUG_DETAIL, &dtc_dev, "Datacomm recieve %d idle\n",
|
||
ln);
|
||
dtc_bufptr[ln] = 0;
|
||
dtc_bsize[ln] = 0;
|
||
case BufInputBusy:
|
||
t = 1;
|
||
while (t && tmxr_rqln(&dtc_ldsc[ln]) != 0) {
|
||
c = tmxr_getc_ln(&dtc_ldsc[ln]) & 0x7f; /* get char */
|
||
c1 = ascii_to_con[c];
|
||
switch(c) {
|
||
case '\005': /* ^E ENQ who-are-you */
|
||
dtc_lstatus[ln] &= ~(BufSMASK);
|
||
dtc_lstatus[ln] |= BufIRQ|BufAbnormal|BufWriteRdy;
|
||
IAR |= IRQ_12;
|
||
sim_debug(DEBUG_DETAIL, &dtc_dev,
|
||
"Datacomm recieve ENQ %d\n", ln);
|
||
t = 0;
|
||
break;
|
||
case '}':
|
||
dtc_buf[ln][dtc_bufptr[ln]++] = 017;
|
||
dtc_lstatus[ln] |= BufAbnormal;
|
||
/* Fall through to next */
|
||
|
||
case '\r':
|
||
case '\n':
|
||
case '~':
|
||
dtc_lstatus[ln] &= ~BufSMASK;
|
||
dtc_lstatus[ln] |= BufIRQ|BufReadRdy;
|
||
/* Force at least one character for GM */
|
||
dtc_buf[ln][dtc_bufptr[ln]++] = 077;
|
||
dtc_bsize[ln] = dtc_bufptr[ln];
|
||
IAR |= IRQ_12;
|
||
t = 0;
|
||
sim_debug(DEBUG_DETAIL, &dtc_dev,
|
||
"Datacomm recieve %d return\n", ln);
|
||
break;
|
||
case '\025': /* Control U clear input buffer. */
|
||
dtc_bsize[ln] = 0;
|
||
c1 = 0;
|
||
break;
|
||
case '\b':
|
||
case 0x7f:
|
||
if (dtc_bufptr[ln] > 0) {
|
||
tmxr_putc_ln(&dtc_ldsc[ln], '\b');
|
||
tmxr_putc_ln(&dtc_ldsc[ln], ' ');
|
||
tmxr_putc_ln(&dtc_ldsc[ln], '\b');
|
||
dtc_bufptr[ln]--;
|
||
} else {
|
||
tmxr_putc_ln(&dtc_ldsc[ln], '\007');
|
||
}
|
||
c1 = 0;
|
||
sim_debug(DEBUG_DATA, &dtc_dev,
|
||
"Datacomm recieve %d backspace\n", ln);
|
||
break;
|
||
case '?':
|
||
sim_debug(DEBUG_DATA, &dtc_dev,
|
||
"Datacomm recieve %d ?\n", ln);
|
||
dtc_lstatus[ln] |= BufAbnormal;
|
||
c1 = 0;
|
||
break;
|
||
default:
|
||
sim_debug(DEBUG_DATA, &dtc_dev,
|
||
"Datacomm recieve %d %02x %c %02o\n", ln, c, c, c1);
|
||
}
|
||
if (t && c1) {
|
||
tmxr_putc_ln(&dtc_ldsc[ln], con_to_ascii[c1]);
|
||
dtc_buf[ln][dtc_bufptr[ln]++] = c1;
|
||
}
|
||
if (dtc_bufptr[ln] >= dtc_blimit[ln]) {
|
||
sim_debug(DEBUG_DETAIL, &dtc_dev,
|
||
"Datacomm recieve %d full\n", ln);
|
||
dtc_lstatus[ln] &= ~(BufSMASK);
|
||
dtc_lstatus[ln] |= BufGM|BufIRQ|BufReadRdy;
|
||
dtc_bsize[ln] = dtc_bufptr[ln];
|
||
IAR |= IRQ_12;
|
||
t = 0;
|
||
break;
|
||
}
|
||
}
|
||
|
||
break;
|
||
case BufOutBusy:
|
||
/* Get next char and send to output */
|
||
t = 1;
|
||
while(t && dtc_bufptr[ln] < dtc_bsize[ln] && dtc_ldsc[ln].xmte) {
|
||
c = dtc_buf[ln][dtc_bufptr[ln]++];
|
||
c1 = con_to_ascii[c];
|
||
switch(c) {
|
||
case 057: /* { */
|
||
c1 = '\r'; /* CR */
|
||
break;
|
||
case 032: /* ! */
|
||
c1 = '\n'; /* LF */
|
||
break;
|
||
case 076: /* < */
|
||
c1 = 0; /* X-ON */
|
||
break;
|
||
case 016: /* > */
|
||
c1 = 0; /* DEL */
|
||
break;
|
||
case 017: /* } */
|
||
/* Disconnect line */
|
||
tmxr_reset_ln(&dtc_ldsc[ln]);
|
||
sim_debug(DEBUG_DETAIL, &dtc_dev,
|
||
"Datacomm disconnect %d\n", ln);
|
||
t = 0;
|
||
continue; /* On to next line */
|
||
}
|
||
sim_debug(DEBUG_DATA, &dtc_dev,
|
||
"Datacomm transmit %d %02o %c\n", ln, c&077, c1);
|
||
tmxr_putc_ln(&dtc_ldsc[ln], c1);
|
||
if (c1 == '\n') {
|
||
tmxr_putc_ln(&dtc_ldsc[ln], '\r');
|
||
}
|
||
}
|
||
if (dtc_bufptr[ln] >= dtc_bsize[ln]) {
|
||
if (dtc_lstatus[ln] & BufGM) {
|
||
sim_debug(DEBUG_DETAIL, &dtc_dev,
|
||
"Datacomm idle %d\n", ln);
|
||
dtc_lstatus[ln] = BufIRQ|BufIdle;
|
||
} else {
|
||
sim_debug(DEBUG_DETAIL, &dtc_dev, "Datacomm writerdy %d\n",
|
||
ln);
|
||
dtc_lstatus[ln] = BufIRQ|BufWriteRdy;
|
||
}
|
||
IAR |= IRQ_12;
|
||
}
|
||
break;
|
||
default:
|
||
/* Other states are an ignore */
|
||
break;
|
||
}
|
||
} /* end for */
|
||
tmxr_poll_tx(&dtc_desc); /* poll xmt */
|
||
|
||
return SCPE_OK;
|
||
}
|
||
|
||
|
||
t_stat
|
||
dtc_reset(DEVICE *dptr) {
|
||
if (dtc_unit[0].flags & UNIT_ATT) {
|
||
sim_activate(&dtc_unit[1], 100); /* quick poll */
|
||
iostatus |= DTC_FLAG;
|
||
} else {
|
||
sim_cancel(&dtc_unit[1]);
|
||
iostatus &= ~DTC_FLAG;
|
||
}
|
||
return SCPE_OK;
|
||
}
|
||
|
||
/* Attach master unit */
|
||
t_stat
|
||
dtc_attach(UNIT * uptr, char *cptr)
|
||
{
|
||
int i;
|
||
t_stat r;
|
||
|
||
r = tmxr_attach(&dtc_desc, uptr, cptr); /* attach */
|
||
if (r != SCPE_OK)
|
||
return r; /* error */
|
||
sim_activate(&dtc_unit[1], 100); /* quick poll */
|
||
for (i = 0; i < DTC_MLINES; i++) {
|
||
dtc_lstatus[i] = BufNotReady; /* Device not connected */
|
||
}
|
||
uptr->u5 = DTC_RDY;
|
||
iostatus |= DTC_FLAG;
|
||
return SCPE_OK;
|
||
}
|
||
|
||
/* Detach master unit */
|
||
|
||
t_stat
|
||
dtc_detach(UNIT * uptr)
|
||
{
|
||
int i;
|
||
t_stat r;
|
||
|
||
r = tmxr_detach(&dtc_desc, uptr); /* detach */
|
||
for (i = 0; i < dtc_desc.lines; i++)
|
||
dtc_ldsc[i].rcve = 0; /* disable rcv */
|
||
sim_cancel(uptr); /* stop poll */
|
||
uptr->u5 = 0;
|
||
iostatus &= ~DTC_FLAG;
|
||
return r;
|
||
}
|
||
|
||
/* SET LINES processor */
|
||
|
||
t_stat dtc_setnl (UNIT *uptr, int32 val, char *cptr, void *desc)
|
||
{
|
||
int32 newln, i, t;
|
||
t_stat r;
|
||
|
||
if (cptr == NULL)
|
||
return SCPE_ARG;
|
||
newln = (int32) get_uint (cptr, 10, DTC_MLINES, &r);
|
||
if ((r != SCPE_OK) || (newln == dtc_desc.lines))
|
||
return r;
|
||
if ((newln == 0) || (newln > DTC_MLINES))
|
||
return SCPE_ARG;
|
||
if (newln < dtc_desc.lines) {
|
||
for (i = newln, t = 0; i < dtc_desc.lines; i++)
|
||
t = t | dtc_ldsc[i].conn;
|
||
if (t && !get_yn ("This will disconnect users; proceed [N]?", FALSE))
|
||
return SCPE_OK;
|
||
for (i = newln; i < dtc_desc.lines; i++) {
|
||
if (dtc_ldsc[i].conn) {
|
||
tmxr_linemsg (&dtc_ldsc[i], "\r\nOperator disconnected line\r\n");
|
||
tmxr_send_buffered_data (&dtc_ldsc[i]);
|
||
}
|
||
tmxr_detach_ln (&dtc_ldsc[i]); /* completely reset line */
|
||
}
|
||
}
|
||
if (dtc_desc.lines < newln)
|
||
memset (dtc_ldsc + dtc_desc.lines, 0, sizeof(*dtc_ldsc)*(newln-dtc_desc.lines));
|
||
dtc_desc.lines = newln;
|
||
return dtc_reset (&dtc_dev); /* setup lines and auto config */
|
||
}
|
||
|
||
/* SET LOG processor */
|
||
|
||
t_stat dtc_set_log (UNIT *uptr, int32 val, char *cptr, void *desc)
|
||
{
|
||
char *tptr;
|
||
t_stat r;
|
||
int32 ln;
|
||
|
||
if (cptr == NULL)
|
||
return SCPE_ARG;
|
||
tptr = strchr (cptr, '=');
|
||
if ((tptr == NULL) || (*tptr == 0))
|
||
return SCPE_ARG;
|
||
*tptr++ = 0;
|
||
ln = (int32) get_uint (cptr, 10, dtc_desc.lines, &r);
|
||
if ((r != SCPE_OK) || (ln >= dtc_desc.lines))
|
||
return SCPE_ARG;
|
||
return tmxr_set_log (NULL, ln, tptr, desc);
|
||
}
|
||
|
||
/* SET NOLOG processor */
|
||
|
||
t_stat dtc_set_nolog (UNIT *uptr, int32 val, char *cptr, void *desc)
|
||
{
|
||
t_stat r;
|
||
int32 ln;
|
||
|
||
if (cptr == NULL)
|
||
return SCPE_ARG;
|
||
ln = (int32) get_uint (cptr, 10, dtc_desc.lines, &r);
|
||
if ((r != SCPE_OK) || (ln >= dtc_desc.lines))
|
||
return SCPE_ARG;
|
||
return tmxr_set_nolog (NULL, ln, NULL, desc);
|
||
}
|
||
|
||
/* SHOW LOG processor */
|
||
|
||
t_stat dtc_show_log (FILE *st, UNIT *uptr, int32 val, void *desc)
|
||
{
|
||
int32 i;
|
||
|
||
for (i = 0; i < dtc_desc.lines; i++) {
|
||
fprintf (st, "line %d: ", i);
|
||
tmxr_show_log (st, NULL, i, desc);
|
||
fprintf (st, "\n");
|
||
}
|
||
return SCPE_OK;
|
||
}
|
||
|
||
/* Show summary processor */
|
||
|
||
t_stat
|
||
dtc_summ(FILE * st, UNIT * uptr, int32 val, void *desc)
|
||
{
|
||
uint32 i, t;
|
||
|
||
t = 0;
|
||
for (i = 0; i < DTC_MLINES; i++)
|
||
t = t + (dtc_ldsc[i].conn != 0);
|
||
if (t == 1)
|
||
fprintf(st, "1 connection");
|
||
else
|
||
fprintf(st, "%d connections", t);
|
||
return SCPE_OK;
|
||
}
|
||
|
||
/* SHOW CONN/STAT processor */
|
||
|
||
t_stat
|
||
dtc_show(FILE * st, UNIT * uptr, int32 val, void *desc)
|
||
{
|
||
int32 i, cc;
|
||
|
||
for (cc = 0; (cc < DTC_MLINES) && dtc_ldsc[cc].conn; cc++) ;
|
||
if (cc) {
|
||
for (i = 0; i < DTC_MLINES; i++) {
|
||
if (dtc_ldsc[i].conn) {
|
||
if (val)
|
||
tmxr_fconns(st, &dtc_ldsc[i], i);
|
||
else
|
||
tmxr_fstats(st, &dtc_ldsc[i], i);
|
||
}
|
||
}
|
||
} else
|
||
fprintf(st, "all disconnected\n");
|
||
return SCPE_OK;
|
||
}
|
||
|
||
t_stat dtc_help (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, const char *cptr)
|
||
{
|
||
|
||
fprintf (st, "B249 Terminal Control Unit\n\n");
|
||
fprintf (st, "The B249 is a terminal multiplexor. Up to %d lines are supported.\n", DTC_MLINES);
|
||
fprintf (st, "The default number of lines is %d. The number of lines can\n", DTC_MLINES);
|
||
fprintf (st, "be changed with the command\n\n");
|
||
fprintf (st, " sim> SET %s LINES=n set line count to n\n\n", dptr->name);
|
||
fprintf (st, "The B249 supports logging on a per-line basis. The command\n\n");
|
||
fprintf (st, " sim> SET %s LOG=n=filename\n\n", dptr->name);
|
||
fprintf (st, "enables logging for the specified line(n) to the indicated file. The command\n\n");
|
||
fprintf (st, " sim> SET %s NOLOG=line\n\n", dptr->name);
|
||
fprintf (st, "disables logging for the specified line and closes any open log file. Finally,\n");
|
||
fprintf (st, "the command:\n\n");
|
||
fprintf (st, " sim> SHOW %s LOG\n\n", dptr->name);
|
||
fprintf (st, "displays logging information for all %s lines.\n\n", dptr->name);
|
||
fprintf (st, "Once the B249 is attached and the simulator is running, the B249 will listen for\n");
|
||
fprintf (st, "connections on the specified port. It assumes that the incoming connections\n");
|
||
fprintf (st, "are Telnet connections. The connection remains open until disconnected by the\n");
|
||
fprintf (st, "simulated program, the Telnet client, a SET %s DISCONNECT command, or a\n", dptr->name);
|
||
fprintf (st, "DETACH %s command.\n\n", dptr->name);
|
||
fprintf (st, "Other special %s commands:\n\n", dptr->name);
|
||
fprintf (st, " sim> SHOW %s CONNECTIONS show current connections\n", dptr->name);
|
||
fprintf (st, " sim> SHOW %s STATISTICS show statistics for active connections\n", dptr->name);
|
||
fprintf (st, " sim> SET %s DISCONNECT=linenumber disconnects the specified line.\n\n\n", dptr->name);
|
||
fprintf (st, "All open connections are lost when the simulator shuts down or the %s is\n", dptr->name);
|
||
fprintf (st, "detached.\n\n");
|
||
dtc_help_attach (st, dptr, uptr, flag, cptr);
|
||
return SCPE_OK;
|
||
}
|
||
|
||
t_stat dtc_help_attach (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, const char *cptr)
|
||
{
|
||
tmxr_attach_help (st, dptr, uptr, flag, cptr);
|
||
fprintf (st, "The terminal lines perform input and output through Telnet sessions connected\n");
|
||
fprintf (st, "to a user-specified port. The ATTACH command specifies the port to be used:\n\n");
|
||
fprintf (st, " sim> ATTACH %s {interface:}port set up listening port\n\n", dptr->name);
|
||
fprintf (st, "where port is a decimal number between 1 and 65535 that is not being used for\n");
|
||
fprintf (st, "other TCP/IP activities. All terminals are considered Dialup to the B249.\n");
|
||
return SCPE_OK;
|
||
}
|
||
|
||
const char *dtc_description (DEVICE *dptr)
|
||
{
|
||
return "B249 Terminal Control Unit";
|
||
}
|
||
|
||
#endif
|