H316_doc Honeywell H316/H516 H316 Doc

H316 Simulator Usage

01-Dec-2008

COPYRIGHT NOTICE

The following copyright notice applies to the SIMH source, binary, and documentation:

Original code published in 1993-2008, written by Robert M Supnik

Copyright (c) 1993-2008, Robert M Supnik

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

1 Simulator Files .............................................................................................................3

2 H316/H516 Features.................................................................................................... 3

2.1 CPU ......................................................................................................................4

2.2 Programmed I/O Devices .....................................................................................5

2.2.1 316/516-50 Paper Tape Reader (PTR) .........................................................5

2.2.2 316/516-52 Paper Tape Punch (PTP) ........................................................... 6

2.2.3 316/516-33 Console Teletype (TTY) .............................................................7

2.2.4 316/516-12 Real Time Clock (CLK)...............................................................8

This memorandum documents the Honeywell H316/H516 simulator.

1 Simulator Files

The H316 requires the following files:

sim/ scp.h

sim_console.h

sim_defs.h

sim_fio.h

sim_rev.h

sim_fio.c

sim_sock.c

sim_tape.c

sim_timer.c

sim_tmxr.c

sim/h316/ h316_defs.h

h316_cpu.c

h316_fhd.c

h316_lp.c

The Honeywell 316/516 simulator is configured as follows:

device names simulates

CPU H316/H516 CPU with 16/32KW memory

PTR 316/516-50 paper tape reader

PTP 316/516-52 paper tape punch

TTY 316/516-33 console terminal

CLK 316/516-12 real time clock

- Decode of an undefined instruction, and STOP_INST is set

- Reference to an undefined I/O device, and STOP_DEV is set

- More than INDMAX indirect references are detected during memory reference address

decoding

- DMA/DMC direction does not agree with I/O device operation

- A write operation is initiated on a write locked magnetic tape unit (hangs the real system)

- A disk write overruns the specified record size (destroys the rest of the track on the real system)

- A disk track has an illegal format

The LOAD and DUMP commands are not implemented.

2.1 CPU

SET CPU 12K set memory size = 12K

SET CPU 16K set memory size = 16K

SET CPU 24K set memory size = 24K

SET CPU 32K set memory size = 32K

SET CPU DMC enable DMC option

SET CPU NODMC disable DMC option

SET CPU DMA=n set number of DMA channels to n (0-4)

If memory size is being reduced, and the memory being truncated contains non-zero data, the simulator

asks for confirmation. Data in the truncated portion of memory is lost. Initial memory size is 32K. By

CPU registers include the visible state of the processor as well as the control registers for the interrupt

system.

name size comments

P 15 program counter

A 16 A register

B 16 B register

X 16 index register

SC 16 shift count

ION 1 interrupts enabled

INODEF 1 interrupts not deferred

INTREQ 16 interrupt requests

DEVRDY 16 device ready flags (read only)

DEVENB 16 device interrupt enable flags (read only)

CHREQ 20 DMA/DMC channel requests

DMAAD[0:3] 16 DMA channel current address, channels 1 to 4

DMAWC[0:3] 15 DMA channel word count, channels 1 to 4

DMAEOR[0:3] 1 DMA end of range flag, channels 1 to 4

STOP_INST 1 stop on undefined instruction

The paper tape reader (PTR) reads data from a disk file. The POS register specifies the number of the next

The mode can also be set by a switch setting in the ATTACH command:

STOP_IOE 1 stop on I/O error

The console Teletype (TTY) consists of four separate units:

TTY0 keyboard

TTY1 printer

TTY2 paper tape reader

TTY3 paper tape punch

The keyboard and printer (TTY0, TTY1) can be set to one of four modes, KSR, 7P, 7B, or 8B:

mode input characters output characters

8B no changes no changes

The default mode is KSR. The Teletype keyboard reads from the console keyboard, and the printer writes

to the simulator console window.

The paper tape reader (TTY2) can bet set to operate in binary, ASCII, or Unix ASCII mode:

SET TTY2 BINARY binary mode

SET TTY2 ASCII ASCII mode

SET TTY2 UASCII Unix ASCII mode

In ASCII or Unix ASCII mode, all non-zero characters have the high order bit forced on. In Unix ASCII

mode, newline is converted to CR, and LF is inserted as the following character.

The paper tape reader is started by program output of XON or by the command SET TTY2 START. The

paper tape reader is stopped by reader input of XOFF or by the command SET TTY2 STOP.

The Teletype paper tape punch (TTY3) can bet set to operate in binary, ASCII, or Unix ASCII mode:

SET TTY3 BINARY binary mode

ATT –U TTY3 <file> Unix ASCII mode

In ASCII or Unix ASCII mode, all characters are masked to 7b before being written to the output file. In Unix

ASCII mode, LF is converted to newline, and CR is discarded.

The Teletype paper tape punch is started by program output of TAPE or by the command SET TTY3

START. The punch is stopped by program output of XOFF or by the command SET TTY3 STOP.

The TTY implements these registers:

name size comments

BUF 8 last data item processed

MODE 1 read/write mode

PPOS 32 current punch character position

2.2.4 316/516-12 Real Time Clock (CLK)

The real time clock (CLK) frequency can be adjusted as follows:

SET CLK 60HZ set frequency to 60Hz

SET CLK 50HZ set frequency to 50Hz

The default is 60Hz.

ENABLE 1 device interrupts enabled

The real-time clock autocalibrates; the clock interval is adjusted up or down so that the clock tracks actual

elapsed time.

2.3 316/516 Line Printer (LPT)

The line printer (LPT) writes data to a disk file. The POS register specifies the number of the next data item

to be written. Thus, by changing POS, the user can backspace or advance the printer.

The line printer can be connected to the IO bus, a DMC channel, or a DMA channel:

SET LPT IOBUS connect to IO bus

The line printer implements these registers:

WDPOS 6 word position in current scan

SVCCH 2 service channel

BUF 8 buffer

POS 32 position in the output file

XTIME 24 delay between transfers

ETIME 24 delay at end of scan

PTIME 24 delay for shuttle/line advance

STOP_IOE 1 stop on I/O error

Error handling is as follows:

not attached 1 report error and stop

or to autosize the number of surfaces from the attached file:

SET FHD 1S one surface (98K)

SET FHD 2S two platters (196K)

:

SET FHD 16S sixteen surfaces (1568K)

SET FHD AUTOSIZE autosized on ATTACH

The default is one surface.

The fixed head disk can be connected to the IO bus, a DMC channel, or a DMA channel:

The fixed head disk implements these registers:

name size comments