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Octek HIPPO DCA 2, User Manual

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Appendix           Advanced Technical Information 

 

Hippo DCA2 User’s Manual 

32 

 

 

CD1 

B1 

    A1 

                   CD0 

 

CD3 

B2 

    A2 

                   CD2 

 

Ground 

B3 

    A3 

                   CD4 

 

CD5 

B4 

    A4 

                   CD6 

 

CD7 

B5 

    A5 

                   CD8 

 

CD9 

B6 

    A6 

                   Ground 

 

CD11 

B7 

    A7 

                   CD10 

 

CD13 

B8 

    A8 

                   CD12 

 

CD15 

B9 

    A9 

                   Power 

 

Ground 

B10 

    A10 

                   CD14 

 

CD17 

B11 

    A11 

                   CD16 

 

Power 

B12 

    A12 

                   CD18 

 

CD19 

B13 

    A13 

                   CD20 

 

CD21 

B14 

    A14 

                   Ground 

 

CD23 

B15 

    A15 

                   CD22 

 

CD25 

B16 

    A16 

                   CD24 

 

Ground 

B17 

    A17 

                   CD26 

 

CD27 

B18 

    A18 

                   CD28 

 

CD29 

B19 

    A19 

                   CD30 

 

CD31 

B20 

    A20 

                   Power 

 

CA30 

B21 

    A21 

                   CA31 

 

CA28 

B22 

    A22 

                   Ground 

 

CD26 

B23 

    A23 

                   CA29 

 

Ground 

B24 

    A24 

                   CA27 

 

CA24 

B25 

    A25 

                   CA25 

 

CA22 

B26 

    A26 

                   CA23 

 

Power 

B27 

    A27 

                   CA21 

 

CA20 

B28 

    A28 

                   CA19 

 

CA18 

B29 

    A29 

                   Ground 

 

CA16 

B30 

    A30 

                   CA17 

 

CA14 

B31 

    A31 

                   CA15 

 

CA12 

B32 

    A32 

                   Power 

 

CA10 

B33 

    A33 

                   CA13 

 

CA8 

B34 

    A34 

                   CA11 

 

Ground 

B35 

    A35 

                   CA9 

 

CA6 

B36 

    A36 

                   CA7 

 

CA4 

B37 

    A37 

                   CA5 

 

WBack 

B38 

    A38 

                   Ground 

 

BEO 

B39 

    A39 

                   CA3 

 

Power 

B40 

    A40 

                   CA2 

 

BE1 

B41 

    A41 

                   n/c 

 

BE2 

B42 

    A42 

                   Reset 

 

Ground 

B43 

    A43 

                   D/C 

 

BE3 

B44 

    A44 

                   M/IO 

 

ADS 

B45 

    A45 

                   W/R 

 

LRDY 

B46 

    A46 

                   RDY 

 

LDEV 

B47 

    A47 

                   Ground 

 

LREQ 

B48 

    A48 

                    IRQ9 

 

Ground 

B49 

    A49 

                   BRDY 

 

LGNT 

B50 

    A50 

                   Blast 

 

Power 

B51 

    A51 

                   ID0 

 

ID2 

B52 

    A52 

                   ID1 

 

ID3 

B53 

    A53 

                   Ground 

 

ID4 

B54 

    A54 

                   VLCLK 

 

LKEN 

B55 

    A55 

                    Power 

 

Leads 

B56 

    A56 

                    LBS16 

 

 
 
 

 
 
 
A.5 

Direct Memory Access Channels 

 
 

Channel 

Function 

8-Bit 

16-Bit 

Transfer  

Summary of Contents for HIPPO DCA 2

Page 1: ...USER S MANUAL HIPPO DCA 2 VESA LOCAL BUS MOTHERBOARD...

Page 2: ...i Hippo DCA2 486 486 VESA LocalBus Motherboard User s Manual Version 2 25 December 1994...

Page 3: ...e accurate OISI assumesno responsibility in the event that any inaccuracies are found In no event shall OISI be held liable for any loss or expenses whether directly or indirectly caused by the suppor...

Page 4: ...also included in the Appendix for hardware and software engineers This manual provides information about the installation and maintenance of the Octek Hippo DCA2 motherboard In depth explanations conc...

Page 5: ...rnal Cache Saturation Problem 5 1 13 DynamiCache Excels and External Cache Suffers Under Heavy Processing Loads 5 1 14 Target Operating Environments 5 1 15 L2 DCA2 Cache Efficiency Versus Application...

Page 6: ...tor 22 3 16 Turbo Led Connector 23 3 17 Speaker Connector 23 3 18 Keyboard Lock Connector 24 3 19 Keyboard Connector 24 3 20 External Battery Connector 25 3 21 Power Supply Connector 25 Chapter4 BIOS...

Page 7: ...low cost enhancement to standard DRAM DCA2 was designed for pure performance DCA2 transforms the entire memory bank into DynamiCache a high speed memory that operates at 15ns rather than 70ns 1 3 Wha...

Page 8: ...Random Writes 35ns Random Read Access Page Miss Transparent Refresh during Cache Reads Hidden DRAM precharge during Page Reads Consumes 1 3 the power of SRAM plus DRAM solutions On board cache Hit Mi...

Page 9: ...into the cache and data is available at the output all within a single 35ns access Subsequent reads within the page burst read local instructions or data can continue at a 15ns cycle time Figure 1 Sin...

Page 10: ...ion became larger and much more complex supporting virtual disks DLLs and GUI interfaces 1 11 Application Overhead and its effect on External Cache These new applications subsequently brought with the...

Page 11: ...ceases to be effective in providing any benefit to system performance This is the state in which the cache has become saturated If the processing demands from the CPU increase any further the externa...

Page 12: ...usually utilize less than 5 memory load DOS applicationstypically generate less than 25 memory load Windows 3 11 applicationstypically generate approximately 50 memory load OS 2 2 11 UNIX and Windows...

Page 13: ...DRAM modules Memory Width 32 bit DynamiCache DRAM Enhancement Fast Page Mode and Hidden Refresh supported BIOS Subsystem BIOS Type AMI Microid Research BIOS Shadowing Shadow RAM for System and Video B...

Page 14: ...eneral Features Hippo DCA2 User s Manual 8 CHAPTER 2 GENERAL FEATURES 2 1 Layout of Hippo DCA2 Board Figure 2 Inspect and clean your computer system regularly Electronic components are sensitive to du...

Page 15: ...nsion slots 6 32 Bit VESA Extension slots 7 DynamiCache slot 1 and slot 2 8 DRAM slot 1 and slot 2 9 System BIOS 10 Mach 210 programmable logic 11 Mach 110 programmable logic 12 82C802G chipset 13 Tra...

Page 16: ...t state 0 wait state JP13 SL CPU select 2 3 RFU JP14 SL CPU select 2 3 SL JP15 Cyrix CPU support 2 3 RFU JP16 CPU clock multiplier 2 5x open RFU JP17 Clock multiplier 2x open RFU JP18 EPMI open RFU JP...

Page 17: ...of over two hundred authorized distributors worldwide DynamiCache is as easy to handle and install as standard 72 pin DRAM It requires no special handling or skill other than taking normal anti static...

Page 18: ...4 4 16 X 24 4 4 16 4 28 4 4 16 16 40 4 4 32 X 40 4 4 32 32 72 4 8 X X 12 4 8 8 X 20 8 X X X 8 8 X 4 X 12 8 X 4 4 16 8 X 8 X 16 8 X 8 8 24 8 X 16 X 24 8 X 16 4 28 8 X 16 16 40 8 X 32 X 40 8 X 32 32 72...

Page 19: ...miCache to allow the entire program set and dataset to run within DCA2 2 8 ISA Slots ISA is the abbreviation for Industry Standard Architecture It refers to the bus architecture originally created for...

Page 20: ...CPUs as well as various processing speeds With DynamiCache the onboard memory is brought up to the speed of the CPU making it possible to run a fast processor without the problem of bottlenecks 2 11 P...

Page 21: ...he Environmental Protection Agency s Energy Star program In order to meet the EPA s Energy Star standards a system must consume fewer than 30 watts when in sleep mode The Hippo DCA2 accomplishes this...

Page 22: ...system cool The motherboard contains many high speed componentsand they will generate heat during operation Other add on cards and the hard disk can also produce a lot of heat The temperature inside...

Page 23: ...DX4 100 2 3 2 3 1 2 open open 1 2 1 2 3 4 2 3 2 3 2 3 2 3 Intel P24T 2 3 2 3 1 2 open open 1 2 1 2 3 4 2 3 2 3 2 3 2 3 Intel 487 25 1 2 1 2 1 2 open open 2 3 1 2 3 4 2 3 2 3 2 3 2 3 Intel 487 33 2 3 2...

Page 24: ...aight before installing the CPU onto the PGA socket located on your motherboard refer tolayout for exact location To properly align the CPU with thesocket align pin 1 of the CPU with pin 1 of the CPU...

Page 25: ...ks and the DRAM modules into the DRAM banks Figure 9 Memory Modules Sockets Never force the SIMM modules into the SIMM sockets The sockets are fragile and the locking latches may break Depending on ho...

Page 26: ...bank at an angle then push the module forward so that it is locked into place by the latches located on the sides of the bank The latches should be locked tightly and the holes in the module should b...

Page 27: ...w current directly from the motherboard without having to rely on a separate power connector A CPU fan is highly recommended for today shigh speed CPUs Extreme high CPU temperature are generated durin...

Page 28: ...jumpers and dip switches that must be properly set before installing the board into the computer These switches are necessary to configure various functions on the motherboard 3 14 Reset Switch Connec...

Page 29: ...oggle between standard AT Bus speed and maximum speed of the processor This switch is open when it s ready for normal operation and is closed or shorted to obtain high speed of the sytem 1 2 Figure 12...

Page 30: ...nector and can be installed in keyed position 3 18 Keyboard Lock Connector The keyboard lock enables the user to lock the keyboard preventing unauthorized use of the system J is a five pin single in l...

Page 31: ...cards Before turning on the power make sure that all of these parts are secured 3 20 External Battery Connector The Hippo DCA2 comes with an onboard rechargeable battery so an external battery is not...

Page 32: ...y provide 5 VDCwith a voltage range between 4 95 VDC and 5 25 VDC There are two power supplies connectors on the motherboard Power supplies can run on a widerange of voltages and must be set to the pr...

Page 33: ...ailure The memory refresh circuitry is faulty 2 Parity Error A parity error occured in the first 64KB block of memory 3 Base 64K RAM Failure A memory failure occurred in the first 64KB of memory 4 Sys...

Page 34: ...L H L Memory bank 0 block access read failure L H L H H L Memory bank 0 block access read wrfitge failure L H H H H L Master 8259 failure L H L L L H Slave 8259 failure L H H L L H Master 8259 interr...

Page 35: ...128 KB Video RAM display buffer 00C0000 00DFFFF 128 KB Reserved for add on cards ROM BIOS 00E0000 00EFFFF 64 KB System ROM BIOS expansion 00F0000 00FFFFF 64 KB System ROM BIOS 0100000 0FDFFFF 15232 K...

Page 36: ...DMA Page Registers 0A0 0BF Interrupt Controller 2 8259A 0C0 0DF DMA Controller 2 8237A 5 0F0 Clear Math Coprocessor Busy 0F1 Reset Math Coprocessor 0F8 0FF Math Coprocessor 1F0 1F8 Fixed Disk 200 207...

Page 37: ...O CLK B20 A20 SA11 I O I IRQ7 B21 A21 SA10 I O I IRQ6 B22 A22 SA9 I O I IRQ5 B23 A23 SA8 I O I IRQ4 B24 A24 SA7 I O I IRQ3 B25 A25 SA6 I O O DACK2 B26 A26 SA5 I O O T C B27 A27 SA4 I O O BALE B28 A28...

Page 38: ...round B24 A24 CA27 CA24 B25 A25 CA25 CA22 B26 A26 CA23 Power B27 A27 CA21 CA20 B28 A28 CA19 CA18 B29 A29 Ground CA16 B30 A30 CA17 CA14 B31 A31 CA15 CA12 B32 A32 Power CA10 B33 A33 CA13 CA8 B34 A34 CA1...

Page 39: ...t address C2 CH 0 base and current word count C4 CH 1 base and current address C6 CH 1 base and current word count C8 CH 2 base and current address CA CH 2 base and current word count CC CH 3 base and...

Page 40: ...008F A 8 System Interrupts Interrupt Controllers NMI level Parity or I O Channel Check CTLR 1 CTLR 2 IRQ0 Timer Output 0 IRQ1 Keyboard Output Buffer Full IRQ2 Interrupt from CTLR 2 IRQ8 Real time Clo...

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