Datatech Enterprises Mini 80386SX, User Manual

Page 1: ...o Mini 803863X 20MHz Mainboard User s Manual ...

Page 2: ...990 Datatech Enterprises Co Ltd The PPM 20300 this manual and all illustrations in it are copyrighted with all rights reserved Under the copyright laws the PPM 20300 this manual and illustrations may not be copied without the written consent of Datatech EnterprisesCo Ltd ...

Page 3: ...T 2 and 3 of jumper W13 are shorted when you install your system Otherwise you will have to set up your con figuration whenever you turn on your computer Checklist Your PPM 20300 mainboard package contains the following One PPM 20300 mainboard One user s manual One BIOS system setup manual One EMS driver diskette Theifollowing does not apply to any country where such provrswns are inconsistentwith...

Page 4: ...set 19 Display AdapterSettings 20 Power Good and Power Fail Detect 20 803868X CPU 21 Address Pipeline 21 Math Coprocessor Installation 22 Connectionto Power Supply 24 Choosing a Power Supply 25 Battery Connector 26 Keyboard Connector 26 4 Software 27 Shadow RAM Enable 27 EMS Driver Setup 28 Operation 30 Entering 20MHz Turbo Mode 30 SoftwareTurbo Switch 30 HardwareTurbo Switch 30 Factory Default Se...

Page 5: ...amming architecture and the cost savings associated with 16 bit hardware systems Moreover the 803868X microprocessor is 100 ob ject code compatible with the 386 286 and 8086 microprocessors Therefore PPM 2030C CPU based systems optimize both for performance and cost The PPM 2030C can access the world s largest existing microcomputer software base including the growing collection of 32 bit software...

Page 6: ...or a hardware switch Onboard battery backup for CMOS configura tion table and real time clock RAM subsystem of 512KB 640KB 1MB 1 5MB 2MB 3MB 4MB and 5MB Eight expansion slots Six 16 bit slots and two 8 bit slots Sixteen level interrupt J ahargable i l er Seven channel DMAfor disk and special l O I 64KB legal DTK BIOS ADL certified _ _ _ _ _ _ ll __ 05 developed by Datatech Enterprises Co Ltd Four ...

Page 7: ...The DIP and SIMM DRAM banks can containfrom 512KB 640KB 1MB 1 5MB 2MB 3MB 4MB to 5MB by means of setting jumpers W1 W6 Reterto the illustration below torthe location of jumpers W1 W6 and the RAM banks J Illltlllllllllllllllllltllllll 1 ng r Bantu 2 lIEEI EEEIJ DEED lBank 0 II Bank 1 I WIHHIlullIIHIIIIIIHHIIIIIVJ wlllllllllllllllllllll _ IIIII a4 Bank 1 3 1 11111111111111 1 11111111111111 1 11 1 11...

Page 8: ...ot Turbo mode if your system is operating in both zero wait state and disabled page interleave mode Million Instruction Per secondTest The Million Instruction Per Second MIPS perfor mance test for page interleave zero wait is in 2 45 and for Turbo mode one wait is 2 23 e z w Chip Insertion Rememberthat when inserting chips you must make sure the notched or dotted end of the chip is lined up wrth t...

Page 9: ...either bank as bank 0 1i 1 640KB Total Onboard System Memory Bank 0 41256 FlAM Module x 2 pieces __ IIIIIIIII30 L UIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIG J Bank 1 4164 RAM Module x 2 pieces IIIIIIIII 30 b DIIIIIIIIIIIIIIIIIIIIIIIIIIIIIID J y llIllllIHIIIIHI III IT III IIIIII IIIIIII IIIIIII or Bank 0 44256 X 4 41256 X 2 Jumpers W1 W6 I 1 You may use either bank as bank 0 ...

Page 10: ... X 2 or Bank 0 44256 X 4 41256 X 2 Jumpers W1 W61 E_ E_ EE EE EE EE 1 1 1 Any bank 0 may be used with any bank 1 10 1 5MB Total Onboard System Memory Bank 2 41256 RAM Module x 2 pieces IIIIIIIII 1 30 L T lllllllIIIIIIIIIIIIIIIIIIIIIIIIDJ Bank 1 44256 x 4 41256 X 2 Bank 0 Lullllllllllllllfillll lllllllllll flu 44256 x 4 41256 x 2 1 Jumpers W1 W6 0616 1 11 ...

Page 11: ...llllllag Lullll IllllllllllllllllllllllllEI d Bank 3 41256 RAM Module x 2 pieces IIIIIIIII Bank 1 44256 x 4 41256 x 2 Bank 1 44256 X 4 41256 X 2 Bank0 44256X 4 41256 X 2 Jumpers W1 W6 Bank 0 44256 x 4 41256 x 2 O Jumpers w1 we 2MB Total Onboard System Memory om 1 Bank 0 411000 RAM Module x 2 pieces IIIIIIIII Lvnnnluunnnnn lulu l Jumpers W1 1 1 ...

Page 12: ...0 RAM Module x 2 pieces Bank 2 411000 RAM Module x 2 pieces l W 3 IIIIIIIII Bank 3 411000 RAM Module x 2 pieces IIIIIIIII Bank 1 411000 RAM Module x 2 pieces IIIIIIIII Bank 1 44256 X 4 41256 x 2 Bank 0 44256 X 4 41256 X 2 Jumpers W1 W6 1 l 1 1 O I 1 1 Wm Jumper1sO W1 W6 4 3 15 ...

Page 13: ... of different control panel designs currently available with system unit cases ideally the control panel will include a keyboard look a reset switch a microprocessor speed switch with a LED commonly referred to as 3 Turbo switch and LEDs that indicate power and hard disk activity The panel will probably look something like the figure below POWER s Q Q DD TURBO RESET 6 Functionsof Panel Indicators ...

Page 14: ...rmal J Jumper J3 Pinouts 1 Select Pin J 0 Ground 18 Speaker Jumper J4 Jumper J4 is used to connect a speaker When the four pins are connected to a speaker in a closed circuit the speaker is functional Refer to the figure below for the pinouts Jumper J4 Pinouts i 0 Data Out 0 5 VDC 0 Ground 0 5 VDC Turbo LED JumperJ5 Jumper J5 is used to enable Turbo LED The Turbo LED in the hardware switch indicat...

Page 15: ...tect function pins one and two of jumper W11 shorted Jumper W11 Function 1 Power Fail Detect Circuit Active 0 1 O External Power GoodFunction Active 20 ll 0 0 803868X CPU The PPM 20300 uses an Intel 803868X 20 microprocessorrunning at 20MHz The 803868X has a numberof features that enable a substantial leap in processing power and capability over the 80286 standard used in AT type microcomputers As...

Page 16: ...ed to enable or disable the 80387SX Make sure the notchedot the 80387SXis lined up with the notched end of the socket Refer to the figures below and on the next page for jumper W9 the 803868X and 80387SX Jumper W9 80387SX Enable Disable Table 80387SXSelection 22 0 Dun nunruimuummnfl soasssx 80387SX Notch 80387SX Socket U4 2 Figure The location of W9 803868X and 80387SX 23 ...

Page 17: ... power supply The power good signal is a TTL compatible high level for normal operation or a low level for fault conditions It the power good signal works well the system will function properly Otherwise the CMOS RAM data setting will be lost You are advised to use the internal power fail detect circuit pins one and two of jumperW11 shorted if the external power good signal does not work well Foll...

Page 18: ...stem memory capability Note that If you have more than one megabyte memory you may enable or disablethe 384K memory as shadow RAM The 384K is always allocated at the same address for shadow RAM even if you disable the shadow RAM IMPORTANT You can only enter the setup menu by pressing Esc when the power is switched on You may reset the system to enter setup menu too Shadow RAM Enable For efficient ...

Page 19: ... 4 mut bthD O F1 accept Esc 0 28 0 Indicate two parameters for EMS page register l O base address and frame start address Choose the correct configuration as you desire then press F1 to complete setup You will get a warning if you give an incorrect response For example if you give DOOOH as your frame start segment and shadow RAM in the same area the following message will appear DTK NEAT EMS hardw...

Page 20: ...s on the keyboard while you press the minus key The Turbo LED on your panel if you have one will light For more information on the Turbo LED refer to the Connectors section Hardware Turbo Switch If your hardware Turbo switch is connected to pins one and two of jumper J3 pushing the switch on and off will toggle between 10MHz Normal mode and 20MHz Turbo mode Alternate Use of Both Switches Both the ...

Page 21: ...inear address reflects physical memory and is truncated so that only the lower 24 bits of this address are used to address the 16 megabyte memory address space If paging is enabled this final linear address reflects a 32 bit address This is translated through the paging unit to form a 16 megabyte physical address 32 j Real Address Mode Syst in real mode the 3868X microprocessoroperates as a very f...

Page 22: ...tte Controller IRQ 7 Parallel Port 1 34 ROM Subsystem The ROM subsystem has a 32K by 16 bit arrange ment consisting of two 32K by 8 bit ROM EPROM a modules The odd and even address codes reside in 1 0 separate modules The top of the first megabyte and the bottom of the last megabyte address space is assigned to ROM hex 0F0000 and hex FFOOOO Parity checking is not done on ROM DTK BIOS has been prov...

Page 23: ...nd 16 bit system memory are supported by channels 5 6 and 7 DMA channels 5 through 7 will transfer data in 128KB blocks throughout the 16 megabyte system address space These channels will not transfer data on odd byte boundaries 1 O The addresses forthe page register are as follows Page Register l O Hex Address DMA Channel 0 0087 DMA Channel 1 0083 DMA Channel 2 0081 DMA Channel 3 0082 DMA Channel...

Page 24: ...SD10 D ACK7 14 011 DRO7 15 SD12 5VDC 16 SD13 MASTER 17 SD14 GND 18 SD15 D Math Coprocessor Control The math coprocessor functions as an l O device through l O port addresses hex 0F8 OFA and CFO The microprocessorsends OP codes and operands to I O ports The microprocessor also receives and stores results through the same l O ports The busy signal sent by the processor forces the microproces sor to ...

Page 25: ...horted Plpelining enable W9 80387SX 1 2 shorted Coprocessor enable 2 3 shorted Coprecessor disable W1 1 PowerGoodSelection 1 2 shorted Onboard 2 3 shorted External W12 Display Mode 1 2 shorted Mono 2 3 shorted Color 40 1 50 O 0 W13 Battery Selection 1 2 shorted External 2 3 shorted Onboard J1 CPU FrequencyIndicator J2 Keylock PowerLED J3 Turbo Switch J4 Speaker J5 Turbo LED J6 Hardware Reset J7 Ex...

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