THE "SUPER 8080" MICROCOMPUTER AMI 6800 PROTOTYPE

HO
PU-rEB
DIGES-r
Volume 3, Number 1
July, 1976
THE "SUPER 8080" MICROCOMPUTER
MICRONOVA MICROCOMPUTER FAMILY
Z-80, Zilog's first microcomputer, was
introduced at the California Computer Show
and includes all the logic circuits necessary
for building high performance microcomputerbased products with virtually no external
logic, and a minimum number of static or dynamic memories.
Totally software compatible with Intel's
8080A, the 40-pin N-channel, depletion mode,
MOS microprocessor has a repertoire of 158
instructions and 17 internal registers including two real index registers. Additional
features include built-in refresh for dynamic
memory, 1.6 us machine cycle time, and a
single 5V power supply and a single phase
TTL clock. (cont'd on page 2)
As reported last month, Data General
Corp. has introduced a 16-bit microcomputer
family with the architecture, software and
system performance of a NOVA minicomputer.
The family ranges from chip sets to fully
packaged computer systems. The microNOVA
family is based on a high-performance, Data
General designed and manufactured 40-pin
NMOS microprocessor.
AMI 6800 PROTOTYPE CARD
American Microsystems, Inc. has introduced
a microprocessor prototyping board for hardware and software evaluation of 6800-based
microcomputer systems family in specific applications.
The AMI 6800 Microprocessor Evaluation
Board (EVK300) features a built-in programmer
for the S6834 EPROM microcircuitry. This
feature, not offered on competing prototyping
systems, gives the AMI board greater capability in developing prototype microcomputer
programs. (cont'd on page 2)
NATIONAL STUNS INDUSTRY W/8080
The well-known 8080A microprocessor family
is now available, along with plans for its
most popular support circuits, from National
Semiconductor Corp. 's Microprocessor Group,
according to Bill Baker, group director.
(cont'd on page 2)
cI
PO BOX 1167, CUPERTINO, CA 95014 •
This microprocessor features a 16-bit
word length, NOVA-compatible architecture,
32K main memory capacity and a sophisticated
I/O enco.ding scheme capable of controlling
multiple high-performance peripherals.
Main memory is available as dynamic RAM
or PROM, for nonvolatile storage of programs.
Memories are expandable up to 32K words.
Additional drivers, sense amplifiers and
transceivers provide full buffering for
(cont'd on page 4)
(408) 247-8940
Copyright © 1974 by Microcomputer Associates Inc., All Rights Reserved. M.R. Lemas, President. Published monthly. Subscription
$28.00 per year, overseas $38.00 per year. DARRELL D. CROW, Editor; LILLIAN LAU, Associate Editor; LINDA KOCHANOWSKI
Circulation Editor; RAY HOLT, Applications Technical Advisor; MANNY LEMAS, Applications Technical Advisor.
2
MICROCOMPUTER DIGEST
THE "SUPER 0000" MICROCOMPUTER
(from page 1)
Zilog claims the Z-80 has 25 to -100% better
throughput and that 25 to 50% less memory is
needed than with the 8080A.
Zilog has added instructions to allow for
additional indexed and relative addressing
modes, memory-to-memory block transfers, and
a wide range of memory and register rotates
and shifts. It also features 16-bit arithmetic and BCD arithmetics.
The Z-80 microprocessor is not a pin-compatible device due to adding new features to
the CPU and eliminating the need for the 8224
and 8228 circuits it also replaces. However,
Zilog has kept the pinout relatively similar
to the 8080 to simplify customer hardware
designs.
The Z-80 is available in three forms:
chips, card, and as a stand-alone floppy
disc system for hardware and software development.
The chip family includes the CPU, PIO
(parallel I/O controller), SIO (serial I/O
controller), CTC (counter/timer circuit),
and a high speed DMA controller.
The PIO and SIO programmable controllers
provide direct interfacing to a wide rapge
of parallel serial interface peripherals
without the use of additional external logic.
Real-time events are controlled by the CTC.
Resident software support include ROMbase'd executive, RAM-based assembler, text
editor, DOS file maintenance, real-time
debuggers and PL/Z and BASIC compilers.
Offline support include assembler, simulator,
compiler and test pattern generator.
Pricing for the Z-80 is $200 in sample
units and $50 in 1000 lots. Mostek and Zilog
announced last month a licensing agreement
making Mostek the Z-80 second source supplier.
AMI 6000 PROTOTYPE CARD
(from page 1)
The board also serves as a general purpose
microcomputer for low volume systems by the
cI
PO BOX 1167, CUPERTINO, CA 95014 •
Volume 3, Number 1 I July, 1976
utilization of up to 58 I/O lines and
expansion up to 56K bytes of user memory.
The AMI board, which is 10-1/2" x 12"
and has two 86-pin edge connectors, can also
be used for evaluating incoming microcircuits
and for programming EPROM's on a limited
production basis. Communication to the
board is done through a TTY. Computer
timesharing facilities are used to translate source-to-object code.
A high-level interpretive computer language called AMI6800 Tiny BASIC is furnished
to EVK300 users. It resides in the EPROM at
no extra charge. And Prototyping Operating
System Program (PROTO), res iding' in the ROM
is supplied with the board.
The board is available in three package
options: kit form with the PC board and a
minimum quantity of parts (EVKIOO-$295);
expanded kit with 512 x 8 EPROM (EVK200$595)~ and the expanded kit fully assembled
and tested having 2K bytes EPROM with Tiny
BASIC (EVK300-$950).
NATIONAL STUNS INDUSTRY
W/OOOO
(from page 1)
The National microprocessor, INS8080A, is
(408) 247·8940
Copyright © 1974 by Microcomputer Associates Inc., All Rights Reserved. M.R. Lemas, Pre~ident . .Published monthly. Subscription
$28.00 per year, overseas $38.00 per year. DARRELL D. CROW, Editor; LILLIAN LAU: A~late Ed~tor; LI~DA KOCHANOWSKI
Circulation Editor; RAY HOLT, Applications Technical Advisor; MANNY LEMAS, Applications Technical Advisor.
The 1-80 CPU by Iilog
From The Digital Group, of course.
If you are considering the purchase of an 8080-based system, look no further. The Z-80 has arrived. A new generation 8u80 by the same individuals who helped design the
original 8080 - combining all the advantages of the 6800,
6500 and 8080 into one fantastic little chip! And, the Z-80
maintains complete compatibility with 8080 software.
What's even better ... the Z-80 is being brought to you by
The Digital Group - people who understand quality and
realize you expect the ultimate for your expenditure. With
the Z-80, combined with the Digital Group System's videobased operation, you're at state of the art. There's no place
better.
• New Instructions (highlights):
Block move up to 64k bytes memory to memory
Block I/O up to 256 bytes to/from memory directly
String Search
Direct bit manipulation
• 22 Registers - 16 general purpose
• 1,4,8 and 16 bit operations
DIGITAL GROUP Z-80 CPU CARD
•
•
•
•
Take a look at some specifications:
Z-80 FEATURES
• Complete compatibility with 8080A object code
• 80 new instructions for a total of 158
• 696 Op codes
• Extensive 16-bit arithmetic
• 3 Interrupt modes (incl 8080), mode 2 provides 128
interrupt vectors
• Built-in automatic dynamic memory refresh
• Eleven addressing modes including:
Immediate
I mmed iate extended
Page Zero
Relative
Extended
Indexed
Register
Implied
Register Indirect
Bit
Combination of above
•
•
•
•
•
2k bytes 500ns static RAM
256 bytes EPROM bootstrap loader (1702A)
2 Direct Memory Access (DMA) channels
Hardware Interrupt controller
Supports all 3 modes of interrupt
Mode 2 supports 128 interrupt vectors
Data and Address bus lines drive 30 TTL loads
Z-80 runs at maximum rated speed
Single step or single instruction step
EPROM de-selectable for full 64k RAM availability
(programs may start at location 0)
Complete interchangeability with Digital Group 8080A,
6800 and 6500 CPUs
The Z-80 is here. And affordable. Prices for complete Digital
Group systems with the Z-80 CPU start at $475. For more
information, please call us or write. Now.
THE DIGITAL GROUP INC.
P.O. BOX 6528'
DENVER, CO 80206
(303)861-1686
MICROCOMPUTER DIGEST
a direct pin-for-pin and function-forfunction replacement for the Intel device.
"The 8080A rounds out our microprocessor
line and fills the last major gap in the product line-up," Baker siad. I1The 8080A fits
beautifully between the cost-effective 8-bit
control-oriented SC/MP and the versatile 16bit PACE processor. It's our entry into
the broad byte-handling and communications
segment of the microprocessor market."
"We decided to build and market the 8080A
because it has clearly become the industry's
most popular general-purpose microprocessor,tT
Baker added. "With National's volume capability and manufacturing efficiency, our
decision to make and market the 8080A will
confirm it as the definite industry-standard
microprocessor."
The 8080A is National's first N-channel
MOS microprocessor and is currently the most
complex device which the company has yet
fabricated with its N-channel process.
National reports they intend to build all
of the most popular support circuits in the
family (INS8224, INS8228, INS8212, INS8255),
as well as initiating programs to support
8080A users with hardware, software~ and
development tools.
Sample quantities of National's 8080A
family components are now available from
factory stock, and orders are being accepted
through the company's distributors and sales
representatives. When ordered in 100 lots,
the CPU is priced at $i9.95. In 1977, the
price in volumes greater than 10,000 will
be less than $12 each.
MICRONOVA MICROCOMPUTER FAMILY
(from page 1)
large-system memory and I/O operations.
The microNOVA ~amily also encompasses a
list of support products including asynchronous and diskette interfaces and a new diskette-based operating system, DOS, a compatible member of the RDOS family. Available
support includes training programs, full
documentation and field service.
The microNOVA mN601 CPU is a 40-pin Nchannel silicon-gate (NMOS) chip that is
produced in Data General's Sunnyvale, CA~
semiconductor facility.
It features the NOVA 16-bit multi-function instruction set, multiple addressing
modes, hardware multiply/divide, hard~"are
system stack with automatic limit protection,
and a parallel 16-bit memory bus.
il
I
Volume 3, Number 1 I July, 1976
A 40~pin intelligent I/O Controller
at each device interface accepts fast signals from the microNOVA CPU and routes them
into a parallel 16-line bidirectional data
bus for I/O operations. This allows the
microNOVA to maintain the I/O functionality
of the 47-line NOVA parallel I/O system
without an excessively high pin count.
The mN603 IOC has provisions for addressing up -to 61 devices. The laC features
a program I/O facility with six I/O commands
per device: it incorporated controller
start, clear and function pulses~ has
integral data channel control logic~ and
I6-bit word -count/current address registers.
MicroNOVA software includes programdevelopment tools such as the diskette-based
DOS~ utilities like macro assembler, relocatable loader and super editor~ and Data
General's real-time, multimasking operating
system, RTOS; symbolic debugger~ and FORTRAN
arithmetic libraries, which can be invoked
by FORTRAN programs or used as utility
routines for assembly language programs.
MicroNOVA development software is included at no charge with a development system
that consists of a microNOVA minicomputer,
a diskette-subsystem~ and an ASCII terminal
system. MicroNOVA run time software is
available on any system that includes appropriate microNOVA hardware.
The microNOVA card contains a microNOVA
chip set with full buffering and 4K RAM all
on a single 7-1/2 x 9-1/2" PC board. Additional RAM memory is available in 4K- or 8K
word boards~ PROM in 2K- or 4K-word increments. Board-level packaging components
consist of a backplane/card-frame assembly
that holds nine P~Bs, a power supply assembly ~ 'and accessories.
An asynchronous interface supports Data
General terminal printers and video displays,
and a rnicroNOVA controller interfaces to
Data General's diskette subsystem. Other
boards include a general-purpose wiring
board for custom interfaces, a PROM-burner
and an extender board for easily accessible
maintenance and troubleshooting.
The chassis-level microNOVA can be used
as a fully packaged MOS minicomputer for
OEM product flow, or it can be configured
with flexible diskette and DOS as a program
or interface development system for the OEM's
internal use.
The microprocessor chip is priced at $225
in single unit quantities and $95 in 100 lots.
The CPU/4K single board microcomputer with
9-s1ot chassis, L~K memory, operator panel
and power supply is $1995.
(laC)
MICROCOMPUTER DIGEST
MICROCOMPUTER BASED PRODUCTS
12-81T MICRO ACTS LIKE PDP-OlE
A 12-bit microcomputer, designed around
the Intersil IM6100 microprocessor, offers
software compatibility with the Digital
Equipment Corp. PDP-8/E minicomputers. The
microcomputer, PCM-12, is available in kit
form for $400 to $600, depending on options.
Manufactured by PCM, the microcomputer
has a bus-oriented architecture to insure
flexibility and future expandability. A
TTL-compatible 80 line bus accomodates up to
15 cards for device interfaces and additional memory. The basic kit comes with 4K memory (expandable up to 32K), CPU, control
panel, TTY/CRT terminal interface, cassette
recorder interface, cabinet and power supply. All board interconnects are handled
by a backplane bus an<;l a single ribbon cable.
The PCM-12 can execute most PDP-8 software, including assemblers, editors, debug
routines and advanced languages like BASIC
and FORTRAN--much of which is available
over-the-counter.
ENERGY CONSERVATION
Volume 3, Number 1 I July, 1976
5
Buyers explained that the system reduces
both normal and peak power consumption loads.
The microcomputer, a standard MicroPac 80
manufactured by PCS, works in conjunction
with a minicomputer to automatically turn
heating and cooling equipment on and off
each day, as well as minimizing the use of
this equipment when power consumption approaches a peak demand level.
Buyers also pointed out that automated
energy management systems are now cost effective for any building with power bills
in excess of $5,000/month. In the past,
bills usually had to exceed $10,000 for systems of this type to be economical. System
deliveries are expected to begin in the
second quarter of 1976.
J.l
C AIDS HONEYWELL COMPUTERS
Smooth customer transition from Honeywell
Series 200/2000 to Series 60/Level 66 largecomputer systems without expensive program
and file changes are facilitated by a new
hardware-software conversion package, ,Honeywell Information Systems announced.
Hardware and firmware components of CM 66
can be connected to any standard Level 66
configuration. The system handles all Series
200/2000 instructions except input-output
instructions which are executed through
Level 66, while the processor interface adapter of the microprocessor accesses the
standard Level 66 MOS memory.
6000 FLOPPY DISC SYSrEM
A new automated energy conservation system designed to reduce power consumption in
commercial buildings by as much as 25% has
been developed by Systems Technology, Inc.
According to William Buyers, president, the
system is the first to use a microcomputer
to monitor and control the operation of electrical equipment for the more efficient management of power consumption.
Plug-compatible with all serial asynchronous RS232C equipment, the series 7000 DynaTermDisc floppy disc system has two I/O
ports, with individual speed selection from
75 to 9600 baud.
One port is interfaced to any RS232 terminal; the other to a data set or minicomputer I/O port.
Dynalogic Corp. Ltd. has designed the
system around the Motorola M6800 microprocessor which allows incorporation of an optional editor feature which turns a dumb CRT
into an editing and data entry device.
FRONT PANELS USING pC
Harrel Inc. has designed their digipanels
using microcomputers· to facilitate and increase control capabilities. Digipanels are
complete panels for display and alarm of
MICROCOMPUTER DIGEST
temperatures, pressures, vacuum, rpm and
other parameters.
The setpoint of each parameter is on a
front panel thumbwheel switch and the actual
value is shown on the digital readout located
above the switch. A central alarm is actuated whenever the value of any parameter deviates from the setpoint by more than a predetermined amount.
MICRO SYSTEM WITH PRINTER
Beacon Computer Corp. 's Model B6800 microcomputer consists of a 500 character per
minute printer, 42 character keyboard, tape
reader, tape punch, card memory, BEA-BUSS
card extender, all cables, power supplies
and full documentation. Unit price of the
B6800 is $1,250.
6
Volume 3, Number 1 I July, 1976
GENERAL PURPOSE OEM CARDS
Data Works Instrumentation's Model 226
general purpose microprocessor card is based
on the 8080 microprocessor. It contains DMA
and data bus drivers, status latches, crystal clock and 8-bit vectored priority interrupt.
All 8080 control lines are buffered and
are available on the dual 62-contact edge
connectors. The microcomputer card operates
from +5V and :i:15V supplies and each output
is buffered to drive 48 TTL loads. Priced
at $295 for single units, Model 226 is one
of a series of logic and memory cards now
offered by Data Works.
BI-DIRECTIONAL MATRIX PRINTER
12-BIT MICROCONTROLLER
Based on the firm's TLCS-12A microcomputer, Toshiba has announced the TOSMATIC 12A
microcontroller.
The system consists of a CPU, lK PROM,
256 words of RAM and a process I/O device.
TOSMATIC is expected to be used for position control, cutter control and automatic
thickness control in rolling mills; automatic
operational control for coking furnace trucks;
weighing and moisture control in paper mills;
pumping and filter bed control at water service facilities; etc.
Features of the microcontroller include
full maintenance accessability thru the front
of the device; a watchdog capability built
in to detect hardware failures and shut off
the output; a dedicated PROM controller to
erase or write in the PROM on an individual
card basis; and the condition of each unit
can be checked from the console even when in
operation.
4040 MICROCONTROLLER
Dianatek Corp. has designed a microcontroller around the Intel 4040 microprocessor.
This controller incorporates up to 1356 bytes
of PROM, 320 bytes of RAM, 10 I/O ports and
requires only a single 15V supply. All microprocessor functions are brought out to a
card edge connector.
Two other card edge connectors access CMOS
I/O ports. The PC board is complete with
crystal clock and switches for single-step
check and reset of program. Price of the
bare board with documentation is $36. Parts
kit, less microprocessor chip set, is $39.
The new ."optimized" bi-directional matrix
serial printer that increases throughput two
to three fold has been introduced by Tally
Corp. The Model 1202 uses an internal 8080A
microprocessor to compute the shortest distance to the next print position. The 120
cps unit prints left to right and right to
left, slews at 7 ups, and moves the print
head at an accelerated rate when not printing.
MICROCOMPUTER DIGEST
The newest member to the Tally T-IOOO
series, the Model 1202, will also offer a
standard upper/lower case ASCII character
set and an optional self-test routine. The
self-test option prints an ASCII pattern and
line feed routines to ascertain printer operation and allow off-line forms set-up.
The Model 1202 prints an original plus
four carbon copies and handles form widths
from 4 to 15 inches. Other features include
a convenient snap-in ribbon cartridge, dual
tractor engagement, half-space dot matrix
characters for high print quality and an optional electronic VFU.
Unit price for the Model 1202 starts at
$2830. Quantity discounts are available.
Delivery is 90 days ARO.
8080 PROGRAM ANALYSIS
A program analyzer for 8080 systems allows
software to be debugged and run in the system's hardware without the use of a computer
simulator. Available from Data Works Instru~
mentation, Model 640 contains a 4-digit hexadecimal display that shows either the program
address or data-bus contents. Controls are
provided for stepping the program from a
selectable address, cycling through loops,
and examining bus contents by instruction
step or cycle.
The unit can be plugged directly into any
of the company's microcomputer cards or the
analyzer can be adapted to other 8080 systems
by attaching the proper signals to the inputs.
Priced at $650, the analyzer can be delivered in 2 to 4 weeks.
11- C TELECOMMUNICATIONS TERMINAL
Sidereal Corp. has introduced a new standard 4-row keyboard, ASR terminal. Micro
Net is controlled by a microcomputer and can
simultaneously access TWX, TELEX~ Timeshare,
DDD satellite, private lines and computers
with simple keyboard· instructions.
Micro Net can also access other receiving
terminals and communicate directly with them,
bypassing expensive code conversion. According to a Sidereal spokesman, Micro Net simplifies all communications procedures with a
standard format, 4-row typewriter keyboard.
Message preparation is standardized on one
Micro Net-created tape. The new terminal
automatically produces a printed copy·of the
taped message. Standard keyboard procedures
also automatically dial and redial receiving
terminals, virtually eliminating the need
7
Volume 3, Number 11 July, 1976
for an operator to stand by unsuccessfully
attempting to access often busy lines.
Micro Net also has a built-in, self-diagnostic capability.
Sidereal offers two models, the Micro Net
33 and the Micro Net 35. Both models are
available immediately for lease or purchase.
MICROCOMPUTER SOFTWARE
BSO OFFERING CROSS-ASSEMBLERS
A series of microcomputer cross-assemblers,
developed by Boston Systems Office, Inc.,
feature assembly software written completely
in MACRO. The assemblers are available on a
commerical timesharing networl.
The series is for the Intel 4004, 4040,
8008 and 8080, Fairchild F8, Motorola 6800,
Mostek 6500 series, Texas Instruments 9900
and 1100, and National Semiconductor PACE
microprocessor. Assemblers also are available for TI8080, NEC 8080, and "Mostek F8;
plans are to develop similar software for,
other microprocessors. Software is available
for sale or lease for running on DEC-system10 and PDP-ll computers.
F-8 CROSS ASSEMBLER FOR PDP-8
Logic Systems is offering a cross assembler for the Fairchild F8 microprocessor
that is designed to run on a PDP-8 computer
with a minimum OS/8 operating system.
The assembler will handle aDY size program with a maximum of 600 labels. Features
include: shorthand or free form input data,
formatted list output, binary code in "FairBuf" loader format, and a simplified instruction set.
The assembler requires only 8K of memory.
PL/M 6800 COMPILER
The new PL/M 6800 Compiler, available directly from Intermetrics or through General
Electric Information Services computer network, is.a one-pass compiler which produces
optimized object code in a format directly
usable by the Motorola MINIBUG/MIKBUG and
EXbug Loader Function. The compiler includes
a number of user-controlled features such as
source program listing, object code listing,
assembler code listing and symbol table dumps.
The price for PL/M6800 is $1000 from Intermetrics.
MICROCOMPUTER DIGEST
RESIDENT SINGLE-PASS ASSEMBLER
Micro Systems Software is offering a onepass assembler that runs in resident mode on
an 8080, assembles a compatible sub-set of
the Intel language and generates machine code
directly into memory for immediate execution.
It occupies less than 2K bytes of memory and
can be placed in PROM/ROM.
Features include a bias-address offset
for storing machine code, and three output
print options: print object and source, print
object only, and no print. Price is $495.
MEMORIES AND PERIPHERALS
lSI TEST SYSTEM
A computer-controlled, 120-pin semiconductor test system designed specifically for
testing high-complexity LSI devices such as
microprocessors, calculators and high-density
memories, was introduced at the Electro/76
Show by the Systems Technology Division of
Fairchild Camera and Instrument Corp'.
a
...J
Volume 3, Number 1 I July, 1976
strobe, each programmable from 10 ns to 10
ms with 160-ns resolution; and.test periods
ranging from 100 ns to 40 ms.
CRT IMAGE STORED IN 4K RAM
A CRT display memory, the Intel in-477,
stores an entire video image on a single
board built with 4K RAMs.
The memory locations can be accessed both
randomly and sequentially at data rates up
to almost 20 x 10 6 b/s. This allows the in477 to be used in special image processing
applications and to refresh CRT displays of
virtually any size and image format.
The board is 15" square, operates on standard power supplies of +5, - 5 and +12V and is
completely TTL compatible. Maximum power
dissipation is less than 25W.
Price for the in-477 is $1725 in 100+
lots.
CORE MEMORY FOR NATIONAL uP
Plessey Microsystems has introduced the
PM-MP8 stand-alone core memory system. The
memory has been designed to fulfill both RAM
and PROM functions in microcomputers.
Configured either as a 16K x 8 or 8K x 16
memory, the system is fully compatible with
National Semiconductor's IMP-16C, -16P, -8C,
-8P and PACE microprocessors.
It can also be used to replace the IMP16P/004A RAM or as an add-on memory module,
and features a separate I/O data bus, 3state outputs, access time under 450 ns, and
programmable address select.
An optional memory control card which enables the memory system to be used with the
IMP-16L and other 16- and 8-bit microprocessors provides write protect to prevent inadvertent program modification, data protect
for memory contents during power-up and power-down sequences.
MICROCOMPUTER CORE MEMORY
With the capability of testing up to 120
pins at speeds up to 10MHz, the Sentry IV
system facilitates testing and characterization of advanced semiconductor devices regardless of technology--bipolar TTL, DTL,
ECL or MOS static or dynamic P-channel or Nchannel, or CMOS.
The Sentry IV system offers up to 12 tim~
ing generators for data and clock timing;
four additional timing generators for output
Ampex Corp. 's new Model MCM 1000 microcomputer core memory provides 450 ns access
to 1024, 2048 or 2096 x 8-bit data words and
full cycle operation in 1300 ns.
Each self-contained memory module includes
timing and control, data and address registers, decoding and drive circuits and TTL
negative interface. A data-save feature prevents loss of data upon power interruptions.
Two sizes are available.
The MCM 1000 is priced at $500 in quantity.
MICROCOMPUTER DIGEST
LSI-ll MEMORIES
Memory Systems Inc. is now offering two
accessory boards for DEC's LSI-II microcomputer.
The two boards, one with 8,192 words of
16-bits each and the other with 16,384 words
offer access times of 500 ns and cycle times
of 800 ns.- The units are tentati vely priced
at $1,450 for the 16K board and $879 for the
8K version.
AMI 512x8 EPROM
A 24-pin, high-speed static 512 x 8-bit
EPROM, designed for use in bus-organized
S6800 systems, is now available from American Microsystems, Inc.
The 86834 memory features UV erase time
of less than 10 minutes and a full write
time of less than one minute. The device
dissipates 750 mW when using +5 and -12V
power supplies. It features 3-state outputs
and a typical access time of 500 ns.
A 750 ns version, the S5204A, is also being offered.
The 86834 is priced at $35.90 while the
S5204A is tagged at $27.90. Both prices are
for 100 lots.
VIDEO RAM
The MTX-$16video RAM (VRAM) provides a
direct link between microcomputers and the
video input of a television or CRT. To the
~icrocomputer, the input side of the 3 x 4
x 0.6 inch module looks like an ordinary
128 x 8 RAM with connections to the 7-, 9or 10-bit address and 8-bit data buses.
The output is a video signal that displays an 8 x 16 field of ASCII upper and
lower case letters and symbols. Manufactured by Matrox Electronic Systems, the
VRAM requires only +5V at less than lW.
Price is $95 in quantity.
PROM/ROM SIMULATOR
A new PROM/ROM simulator from ElectriCom
will simulate a 32 x 8, 256 x 4 or 512 x 4
PROM/ROM on each of 2 channels or a 512 x 8
format on 1 channel. In addition, the RS4000 can be loaded from keyboards, preprogrammed PROM/ROM or optional TU-150 papertape reader.
Features include 6-function text editor,
10
Volume 3, Number 1 I July, 1976
replaceable output connector sockets, and
address/data display. The R8-4000 is priced
at $1970.
2704/2708 PROGRAMMER
A versatile programmer for the Intel 2704
(4K) and 2708 (8K) erasable PROMs requires
only 70 seconds to program and verify one of
the 4K memories and only 140 seconds for an
8K device. Verification is done automatically with Curtis Electro Devices, Inc. 's unit
by using an internal RAM.
The RAM may be loaded manually by using
eight data switches and an octal address
switch or automatically from a master ROM,
ROM simulator, or minicomputer. Eight status
lamps on the model PR-2708 programmer allow
visual verification and adjustment of the
contents of the erasable PROM.
The PR-2708 is housed in a 16 x 10 x 4"
metal case, and sells for $998.
IN CIRCUIT ROM EMULATOR
A ROM emulator that can be connected directly to any ROM or PROM socket to emulate
any configuration up to lK x 8 is now available from Genesys. Access time at the attachment point is 50 ns.
The GENRAM RE8192 loads and operates from
an RS232C or current-loop interface at rates
up to 19,200 baud. It recognizes only addresses and data-field control characters,
and can load individual locations. Options
provide compatibility with slower ROM simulators. Faster access times will be available soon.
The unit is tagged at $1776.
60 PROM ERASER
Up to 60 erasable PROMs of the MM5203Q,
1702A and 2708 and similar types can be
handled by Turner Designs' new Model 30-000
PROM eraser.
Devices are loaded on removable metal
trays that also prevent electrostatic damage.
An adjustable time, calibrated in minutes
and with a hold feature, controls operation.
Output at 2537 ~ is 7000 uW/cm 2 . A door interlock prevents accidental exposure and a
specially designed UV-lamp envelope protects
users from ozone.
The unit is priced at $295.
MICROCOMPUTER DIGEST
MICROCOMPUTER LINE PRINTER
A low cost, 160-char/s line printer with
EIA and asynchronous bit-parallel ASCII
interface cards, has been designed for use
with most microcomputers by the Binary Corp.
Self-contained in a 10 x 10 x 4!T package
that includes power supply, the device uses
a Sharp electric-discharge printer to provide 20-col printout on 2.25"-wide paper.
Its standard 64-char set includes full
alphanumerics.
CASSETTE TAPE TRANSPORT
A low cost, variable-speed cassette tape
transport, the Phi-Deck, features 4-motor
control, remot~ control capabilities, fast
start/stop,<30-s rewind, as or battery
operation, and variable speed from 0.4 to
10 in./s.
Power requirements for the unit manufactured by Triple I, are 7 Vdc at 600 rnA
avg. Four separate motors control take-up,
rewind, play or record, and head engagement.
Options such as EOT/BOT sensing, record/
play, read/write, electronics, and cassettein-place sensing are available.
LSI UNIBUS ADAPTOR
A Unibus adaptor from Associated Computer
Consultants combines the DEC LSI-II and
Unibus into 1 bus. Fitting directly into
the H9270 backplane, this quad-width pc
board provides a bidirectional data rate of
659K words/sec, 28K words of memory and
peripheral device address space.
The $650 price includes a cable which
interconnects the bus via an edge connector.
PEOPLE, LITERA TURE AND EVENTS
$900,000 XINCON III ORDERS
The Xincom Systems Division of Fairchild
Camera and Instrument Corporation has
received more t'han $900,000 in initial
orders for its Xincom III semiconductor
memory test system.
Customers who have committed to Xincom
III third-generation destributed multiprocessor architecture for their memory
test requirements include Advanced Memory
Systems, General Electric, General Instrument, Intersil, and Fairchild's MOS Division and Bipolar Memory and ECL Division.
II
Volume 3, Number 1/ July, 1976
CRAMERKIT BROCHURE
Cramer Electronics, has issued an informative new spec sheet that offers descriptions, features, components, and specifications for its selection of Cramerkit line.
Cramerkits are now available based on Intel
8080A, Texas Instruments TMS 8080 and TMS
9900, Motorola 6800, AMD 9080-1, RCA COSMAC
and Mostek F8 Microprocessors.
GUIDE TO TELEPRINTERS
A new guide to help business communications users evaluate and select printing
communications terminals is now available
from AUERBACH Publishers Inc.
The AUERBACH Guide to Teleprinters covers
the major features of over 130 of the most
current teleprinters on the market. A
market overview of teleprinters suggested
selection criteria and application potentials are also provided.
Tpe Guide offers detailed, analytical
descriptions of 35 major terminals~ covering
the manufacturer, specific product features,
limitations, competitive performance, compatibility, and maintenance characteristics.
A directory of suppliers is included.
The new AUERBACH Guide to Teleprinters,
166 pages, is available for $24.95.
PEOPLE ON THE MOVE
Appointment of JOHN A. EKISS as dir~ctor,
MOS Manufacturing Operations for RCA Solid
State Division was announced by Philip R.
Thomas division vice president, MOS Integrated Circuits.
Ramtek Corporation, has named two new
vice presidents, JOSEPH G. MORRIS, Marketing,
and GAYMOND W. SCHULTZ, Engineering.
RICHARD B. RUBENSTEIN has joined American
Microsystems, Inc. in the newly created
position of product/technology planned
coordinator.
L]ONEL MARTIN has been named Manager of
Technical Operations for Zentec Corporation.
BERNARD T. MARREN has resigned from AMI
as president and chief executive officer of
the company.
National Semiconductor Corp. has appointed
OMEGA ELECTRONIC SALES, INC., Huntington
Valley, Pennsylvania as its exclusive Sales
Representative for the territory of Eastern
Pennsylvania, Southern New Jersey and
Delaware.
12
MICROCOMPUTER DIGEST
Volume 3, Number 1 I July, 1976
EDUCATION
28-29
July
20
F8 Microprocessor Seminars
Seattle WA Mostek Corp.
$20
21
F8 Microprocessor Seminars
Portland OR Mostek Corp.
$20
Personal Computing 76 Consumer Trade
Fair $7.80 Atlantic City NJ
SPONSORING ORGANIZATIONS AND CONTACTS:
Elmar Electronics, 2288 Charleston Rd.
Mt. View, CA 94040 (415) 961-3611
26-30
IMP/PACE Applications $395 Santa
Clara CA National Semiconductor
Corp.
Intel Corp., Mic~ocomputer Systems Training,
3065 Bowers Ave.~ Santa Clara, CA 95051
(408) 246-7501
26-30
Mini and Microcomputers Their
Structures, Characteristics and
Applications $375 University of
Michigan
Mostek Corporation, 1215 W. Crosby Rd.,
Carrollton~ TX 75006, (214) 242-0444
28
Intel Microprocessor Applications
Free Denver CO Elmar Electronics
University of Maryland, Dept. of Computer
Science, College Park, MD 20742 ATTN:
Dr. Yaohan Chu, Program Chairman
August
2- 6
Microprocessor Fundamentals $395
Miami FL National Semiconductor
2- 6
SC/MP Applicatlons $395 Santa
Clara CA National Semiconductor
3
F8 Microprocessor Seminars Free
Bridgeport CT Mostek Corp.
5
Intel Microprocessor Applications
Free Palo Alto, CA Elmar Electronics
9-13
National Semiconductor Corp., 2900 Semiconductor Dr., Santa Clara CA 95051 (408)
732-5000
COMPANY ADDRESSES FOR THIS-./SSUE
Alpha Power, Inc., 9020 Eton Ave., Canoga
Park, CA 91304, (213) 998-9873
American Microsystems Inc., 3800 Homestead
Road, Santa Clara, CA 95051, (408) 246-0330
Ampex, Box 33, Marina del Ray, CA 90291
(213) 821-8933
IMP/PACE Applications $395
FL National-Semiconductor
Miami
10
F8/Micrologic Seminar
WA Elmar Electronics
Seattle
16-18
DISE Workshop on Microprocessors
and Education Ft. Collins CO
University of Maryland
Beacon Computer Corp., 3 Lexington Dr.,
Metuchen, NJ 08840, (201) 494-6161
16-20
SC/MP Applications $395
National Semiconductor
Betatech, Inc., 100 Great Rd., Bedford, MA
01730
17
F8 Microprocessor Seminars Free
Los Angeles, CA Mostek Corp.
Binary Corp., 2680 Bayshore Frontage Rd.
Mountain View, CA 94043
18
F8 Microprocessor Seminars
Tucson AZ Mostek Corp.
The Boston Systems Office, Inc., 400-1 Totten
Pond Rd.~ Waltham, MA 02174, (617) 890-0888
19
F8 Microprocessor Seminars Free
Albuquerque, NM Mostek Corp.
Cramer Electronics, 85 Wells Ave .. Newton
MA 02159 (617) 969-7700
19
F8 Micro~ogic_Seminar Free
Alto, CA Elmar Electronics
Palo
Curtis Electro Devices, Inc., Box 4090,
Mountain View, CA 94040, (415) 964-3136
23-27.
Advanced Programming $395
FL National Semiconductor
Miami
Free
Miami FL
Free
Associated Computer Consultants, 150 Aero
Camino, Goleta, CA 93017, (805) 968-8800
Auerbach Publishers Inc., 121 North Broad
St., Philadelphia, PA 19107, (215) 491-8200
~
Data General, Rte. 9, Southboro, MA 01772,
(617) 485-9100
Data Works Instrumentation, 9748 Cozycroft
Ave., Chatsworth, CA 91311, (213) 998-8985
MICROCOMPUTER DIGEST
Volume 3, Number 1 I July, 1976
J3
Deltron Inc., Wisshiekon Ave., North Wales,
PA 19454
Microcomputer Associates Inc., 2589 Scott
Blvd., Santa Clara, CA 95050, (408) 247-8940
Dianatek Corp., Box 1, N. Sutton, NH 03260,
(603) 927-4955
MSI Data Corp., 340 Fischer Ave., Costa Mesa
CA 92627, ,( 714) 549~6000
Dynalogic Corp., Ltd., Bentley Ave., Ottawa
K2E 6T7 Canada
National Semiconductor Corp., 2900 Semiconductor Dr., Santa Clara, C~ 95051, (408)
732-5000
ElectriCom, 12567 Crenshaw Blvd., Hawthorne,
CA 90250, (213) 676-6576
Fairchild Systems Technology Div., 1725
Technology Dr., San Jose, CA 95LIO, (415)
962-3047
Genesys, 11120 Roselle St., San Diego, CA
92121, (714) 452-8665
Hanel Inc., 16G Fitch, E. Norwalk, CT 06855
(203) 866-2573
Honeywell, Inc., Information Systems, Inc.,
Old Connecticut Path, Framingham, MA 91701
Intel Corporation, 3065 Bowers Ave., Santa
Clara, CA 95051, (408) 246-7501
Intermetrics, 701 Concord Ave., Cambridge,
MA 02138, (617) 661-1840
Logic Systems, 437-A Aldo Ave., Santa Clara,
CA 95050, (408) 244-2412
Matrox Electronic Systems, Box 56, Ahuntsic
Stn., H36 3N5 Canada, (514) 481-6838
Memory Systems Inc., 3341 W. El Segundo Blvd.
Hawthorne, CA 90250, (213) 772-4220
Micro Systems Software, 335 W. Olive #216,
Sunnyvale, CA 94086, (408) 735-1650
PCM, P.O. Box 215, San Ramon; CA 94583
Plessey Microsystems, 1674 McGraw Ave.,
Santa Ana, CA 92705, (714) 540-9945
Power-One, Inc., 531 Dawson Dr., Camarillo,
CA 93010, (805) 484-2806
Process Computer Systems, G-4025 S. Center
Rd., Flint, MI 48507, (313) 744-0225
Sidereal Corp., P.O. Box 1042, Portland. OR
97207, (503) 227-0111
Tally Corp., 8301 S. 180th St., Kent, WA
98031, (206) 251-5643
Toshiba (Tokyo Shibanra Elec. Co.), 2-1
Ginza, 5-chome, ChuQ-ku, Tokyo, Japan
Toshiba (Tokyo Shibaura Elec. Co.), 280
Park Ave., New York, NY 10017
Triple I, 1901 N. Walnut, Oklahoma City,. OK
73125
Turner Designs, 2247-A Old Middlefield Way,
Mountain View, CA 94043, (415) 965-9800
Zilog, Inc., 170 State St., Suite 260A, Los
Altos, CA 94022, (415) 941-5055
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MICROCOMPUTER DIGEST
Volume 3, Number 1 I July, 1976
MICROCOMPUTER CONCEPTS, INC.
SHEPARDSON MICROSYSTEMS
Custom hardware and software development for
PACE, IMP 16, SCAMP, 6800
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