GE IS200TBAIH2C TERM BOARD

Description

GE General Electric Technical Specifications: IS200TBAIH2C

IS200TBAIH2C Eight 16 pin sockets provide DRAM (Dynamic Random

Access Memory) storage capabilities for 65536 bytes of

user memory using ‘the MK4564 dynamic RAM. Each

MK4564 is organized as 65’536 by 1 bit.’Refresh circuitry

handles the DRAM rfifresh function automatically with no

responsibility requ”ired of the system user. IS200TBAIH2C Refresh occurs

during each’ operation· code fetch and, therefore, is

transparent to system throughput. The entire 65K bytes of

memory is addressable directly using the sixteen position

Address Bus. Normal shipping configuration after a reset is

with the DRAM from OOOOH through OFFFH, and from

FOOOH to FFFFH, and EPROM from EOOOH through EFFFH.

IS200TBAIH2C Serial Input/Output for the SOlE-COMBO board is

designed around the MK3884-4 Z80-S10 chip. It provides

two fully independent, serial data channels and is designed

to be used in asynchronous applications. An independent

software programmable Baud-rate clock generator is

included to increase communication flexibility. Baud rates

of the terminal may be measured via software by measuring

the width ofthe start bit ofthe serial data stream. Channel A

(SIOA) is shipped set up as Data Communication Equipment

(OCE) and SIO channel B (SlOB) is shipped set up as Data

Terminal Equipment(OTE). Both channels exitthe board via

edge connector SK2.

CTC

IS200TBAIH2C A four-channel Counter Timer Circuit consisting of an

MK3882-4 Z80-CTC is included on-board for software

controlled event counting and timer functions. The CTC

Trigger inputs and zero-count outputs are buffered and

brought out to connector SK2 for off-board control.

Connecting the zero-count output of one CTC channel to the

trigger input of another CTC channel makes it possible to

cascade the four CTC channels for longer counting

sequences.

DMA

The Z80 Direct Memory Access circuit, an MK3883-4 Z80-

OMA, is a programmable single channel device which

provides all address, control, and timing signals required to

effect the transfer of blocks of data between two “ports”

within a Z80-CPU-based system. These “ports” may be

either system main memory, or any system peripheral

input/output port. Additional benefits are gained with a

feature of the OMA that can search a block of data for a

particular byte (bit maskable) with or without a simul

taneous data transfer. Primary use of the OMA function on

the SOlE-COMBO is to provide floppy disk transfers.

Why are the prices of many products of our company more competitive?
(1) Source purchase to reduce the price difference in the intermediate phase
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Lead time problem
(1) For the spot products in stock, the de

livery can be arranged on the same day after the contract payment is signed
(2) Order products and deliver according to the quoted delivery date
Xiamen Xiongba adheres to the enterprise philosophy of “improving the value of spare parts supply chain”,
For the simple purchase procedure of spare parts, ensure that they are delivered to the site in a timely manner, and help users reduce the risk of downtime caused by the shortage of spare parts
The emergency spare parts support service is complete, and the user can customize the spare parts. The quality of the spare parts is reliable. All the spare parts provided enjoy a one-year super long warranty
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