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Obtaining

10MHz

Turbo mode

This

mainboard supports

both

a

software switch

and a

hardware

switch for

changes between

Normal

and

Turbo

modes.

Setting default operation mode

The

Turbo

hardware

switch,

jumper JP6

(shown on

page

3),

gives

you

the choice

of

running the PlM-TBtO-Z

in

either

Normal or Turbo mode when

the

power

is

on. For

default operation:

-

In

Normal mode

.....

Place a

jumper

cap

over

JP6

.

ln

Turbo mode ....... Take

the

jumper

cap

off

JP6

Software switch

Before using the software

switch, pay

attention

to

whether

default

operation

is

in

Normal or Turbo mode.

If

it

is

in

Normal mode, do

the

following:

press and

hold down

the

control

< Ctrl

>

and alternate

< Alt

>

keys

on

the

keyboard

while

you

press the

minus

<

-

> key.

The

cursor

on

the screen

will

turn

into

a

box. The Turbo

LED

on your

panel,

if

you

have installed one,

will

light.

For more

information

on

the Turbo

LED,

refer

to

the

Panel

indicators and switches

section.

Now

the computer

is

in

Turbo mode.

To

return to Normal mode,

press

the same keys

you

used

to

enter

Turbo mode. When you

enter

Normal mode,

the cursor

will

return to

the dash

(_

)

form

and the

Turbo

LED

will

turn

off.

18

3

0

If

default

operation

is

in

Turbo

mode, press and

hold

down

the

control

< Ctrl >

and

alternate

< Alt >

keys on

the

keyboard

while you

press the

minus

<

-

>

key

to

go to

Normal mode. The Turbo

LED

will

turn

off,

and the cursor

will

turn into

a

box.

To

return to Turbo,

press

the same

keys:

the

Turbo

LED

will

light

and the cursor

will

change

into

a dash.

Hardware switch

if

you have

a

hardware

switch on your panel,

connect

it

to

jumper JP6.

More information on this

is

given

in

the

Panel indicators and switches

section.

Push the hardware

switch on to

enter

Normal mode

and push

it

off

to

enter

Turbo mode.

___

Hardware switch

off

___

Hardware switch on

Using

the hardware switch

means

that the

only

indication

of

the mode your computer

is

in will

be

the

Turbo

LED.

It

will

turn on

in

the

Turbo mode

and

turn

off in

the

Normal mode. The

cursor

will

always

have the same

appearance.

19

Содержание PIM-TB10-Z

Страница 1: ...PIM TB 1 0 2 10MHz Mainboard User Manual ...

Страница 2: ...terprises Co Ltd This manual and the PlM TBtO Z mainboard are copyrighted with all rights reserved Under the copyright laws neither this manual nor the PIM TB10 Z mainboard may be copied in whole or in pan without the express written consent of Datatech Enterprises Co Ltd ...

Страница 3: ...as is This includes but is not limited to any implied warranties of merchantability and fitness for a particular purpose The information in this document is subject to change without notice Datatech assumes no responsibility for any errors that may appear in this document lBM IBM PC and PC XT are registered trademarks of International Business Machines Corporation The typeface used in the text of ...

Страница 4: ... choice in buying the PIM TB10 Z motherboard for your personal computer This motherboard is not only compatible with the PC XT but provides you with these features 16 bit 8088 10 CPU or qualified 8088 2 CPU optional 8087 1 coprocessor Switchable processing speed in 10MHz 110 faster than normal 4 77MHz and 4 77MHz Turbo Normal modes selectable by either a software switch or a hardware switch Memory...

Страница 5: ...IIIIIIIII B JP3 I JP1 Installation RAM installation Four kinds of RAM size are possible with the PlM TBtO Z motherboard The figure below shows the location of the RAM banks Remember that when inserting chips in their sockets you must make sure that the notched end of the chip is lined up with the notched end of the socket E I II E II Bank 3 Bank 2 iliili IIIIIIIlI Bank 1 K W IIIIIIIII ...

Страница 6: ... and 3 For 576K RAM bank 2 will be filled with two 4464 chips in sockets U63 and U59 and one 4164 chip in socket U55 For 640K RAM bank 2 will be filled with the same chips as were used for 576K RAM and bank 3 will be filled with two 4464 chips in sockets U72 and U67 and one 4164 chip in U76 ROM installation Two chips must be installed for the ROM of this system a 2764 in socket U38 for the ROM BIO...

Страница 7: ...I E II II lgw Ill IIIIIIIIIIIIII IIIIIIIII IIIIIIIII ca IIIIII 9 0N H normal operation 1 2 3 4 5 6 7 8 ON operation wrthout 8087 E9 5 E E E E 5 coprocessor ON operation With 8087 E E g g g E coprocessor ON for enhanced graphics I I I I E El I I 12345678 adapter ON for color graphics IIIIHHII adapter 40x20 12345678 mOde 0N for color graphics IIIIllliilll adapter 80x25 12345678 mode NOTE 5 indicates...

Страница 8: ... display or omit some of these items from your system Your computer dealer offers an accessory which allows you to add the ON two switches and the LED to your system An example of E E for two dlSk dnves an ideal display panel for your computer is pictured below ON I I I I I I u u for three disk drives 1 2 3 4 5 6 7 8 ON ll l n H for four disk drives 1 2 3 4 5 6 7 8 Functions of panel indicators an...

Страница 9: ...ch connector is located at JP6 on the motherboard By using a switch connected to it operation of the computer can be switched between Turbo and Normal modes For more information on the Turbo switch refer to the Hardware switch section In addition to the connectors for the control panel Speaker connector A speaker may be connected to JP1 on the motherboard The pinouts for the speaker are as follows...

Страница 10: ... 5V DC 5V DC 1 O 11 5VDC 12 5VDC l 1 2 Keyboard connector The keyboard connector is located at the back of your system unit as shown in the figure below Location of keyboard connector from back panel The keyboard connector is a five pin DIN connector The pinouts are give below Pin Assignments 1 Keyboard clock 2 Keyboard data 3 Spare 4 Ground 5 5 VDC 13 ...

Страница 11: ...low Base of case Insert the plastic connectors into the holes on the motherboard which will be located above the slot type connectors in your case The pointed ends of the plastic connectors should be on the top side of the motherboard 0 Note that using the plastic connectors is optional but you should use the brass connectors in order to ground the motherboardto your case if you have used the plas...

Страница 12: ...rate at either of two clock speeds 4 77MHz or 10MHz In the 10MHz Turbo mode your computer will op erate up to 110 faster than a conventional 8088 based computer NOTE Do not use RAM memory on an expansion card because its design may not be compatible with the 1OMHz CPU at access time Use memory on the motherboard comprised of 4164 and 41256 and 4464 chips within 120ns Refer to RAM installation sect...

Страница 13: ...ches section Now the computer is in Turbo mode To return to Normal mode press the same keys you used to enter Turbo mode When you enter Normal mode the cursor will return to the dash _ form and the Turbo LED will turn off 18 3 0 If default operation is in Turbo mode press and hold down the control Ctrl and alternate Alt keys on the keyboard while you press the minus key to go to Normal mode The Tu...

Страница 14: ...t current The power supply is connected to the board by a 12 pin connector Other connectors are for a control panel a speaker and a keyboard Eight 62 pin expansion slots are also mounted on the board The l O channel Is bussed across these eight l O slots An eight switch Dual In Line Package DlP switch SW1 is mounted on the board and can be read under program control The DIP switch provides the sys...

Страница 15: ...ng a constant time base for implementing a time of day clock Channel 1 is used to time and request refresh cycles from the DMA channel and Channel 2 is used to support the tone generation for the audio speaker Each channel has a minimum timing resolution of 1 05us 22 0 O Interrupt Of the eight prioritized levels of interrupts six are bussed to the expansion slots for use by the interface cards Two...

Страница 16: ... memory refresh timing control lines a channel check line a power line and a ground for the adapters Four voltage levels are provided for the expansion cards 5V DC 5V DC 12V DC and 12V DC These functions are provided in a 62 pin connector with too mil card tab spacing 24 0 O A ready line is available on the l O channel to allow operation with slow I O or memory deVIces If the channel s ready line ...

Страница 17: ...ocessor it is available to the l O channel as an indicator of a valid processor address when used with AEN Processor addresses are latched with the falling edge of ALE 0 CH CK 0 channel check This line provides the processor with parity error information on memory or devices in the l O channel When this signal is active low a parity error is activated 0 CH RDY I O channel ready This line normally ...

Страница 18: ...resh system dynamic memory DACK 0 They are active low AEN address enable This line is used to degate the processor and other de vices from the l O channel to allow DMA transfers to take place When this line is active high the DMA controller had control over the address bus the data bus the read command lines memory and I O and the write command lines memory and l O 28 O O T C terminal count This l...

Страница 19: ...n the l O address map A timer clock channel the output of which is pro grammable within the functions of the 8253 5 timer when using a 1 19MHz clock input The timer gate is also controlled by an 8255A 5 PPl output port bit Ad dress and bit assignment are in the l O address map The speaker connector is a two pin 90 degree con nector See Speaker connector section for more infor mation 30 333 O J O ...

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