Epson Equity 386/20 Product Information Guide
Contents
1. Disk Controller Secondary 1F0 1F7 Hard Disk Controller Primary 200 207 Game Port 278 27F Parallel Port 2 2FB 2FF Serial Port 2 300 31F Prototype Card 360 36F Reserved 378 37F Parallel Port 1 380 38F SDLC Bisynchronous Communication 2 3AF Bisynchronous Communication 1 380 3BF MDA and Printer Port 300 Resewed 3D0 3DF CGA 3F0 3F7 floppy Disk Controller 3F8 3FF Serial Port 1 The keylock on the front panel allows you to disable the keyboard and RESET button and lock the top cover of the main unit for security The keyboard may be locked while the system is in operation This disables the keyboard so no one can interfere with the current operation To lock the system insert the key with the notch pointing left and turn it clockwise You must press the key in slightly when you turn it To unlock the system insert the key with the notch pointing up and turn the key counterclockwise You can remove the key in either position EQ386 20 3 EQUITY 386 20 DMA Channels Channel Function 0 Spare Spare 2 floppy disk transfers 3 Spare hard disk drive 4 Cascade of data from channel 0 3 5 Spare 6 Spare 7 Spare Hardware Interrupts CTLR1 CTLR2 FUNCTION Timer Output 0 Keyboard Interrupt from Controller 2 Serial port 2 Serial port 1 Parallel port 2 Floppy disk interrupt Parallel port 1 RTC interrupt Redirected to INTOAH Reserved Reserved Reserved Coprocesso2. 4 DTR Dam Terminal Ready 4x256KB 4x256KB 4x256KB 4 x 256KB 5 SG Signal Ground 8MB 4x 1MB 4x M8 6 DSR Dam Set Ready 10MB Ax IMB 4x 1MB 4x 256KB 4x256KB 7 RTS Requast to Send 16MB 4x MB 4x 1MB 4x 1MB 4x MB 8 CTS i Clear to Send 9 RI 1 Ring Indicator Keyboard Connector a Or 10 5 6 Pin Number Signal Nasne Clock Data Not Connected Ground 5 VOC Ground RC m EQ386 20 2 9 22 89 Equity Series Computers fe ee fh n Rr aos ate c EEE J CI acter J3 ted J5 C C C B 886200 EPSON 1J2 J C ee a B ABA Factory Settings Equity Series Computers Function Primary register set Al FDC Secondary register sat AT FDC PC register set FDC Disable FDC register set Primary parallel I F 1807 Secondary parallel I F IRQ5 Video adapter parallel I F IRQ7 Disable parallel I F Primary serial I F IRQ4 Secondary serial I F IRQ3 Disable serial I F AT compatible FDD I F Equity Ill FDD I F Standard setting Test mode of VCO 4 3 89 EQUITY 366 20 Port Addresses Function 000 01F Controller 1 020 O3F Interrupt Controller 1 022 023 Configuration Registers 040 05 Timer Counter 060 06F Keyboard Controller 070 07F Real Time Clock NMI Mask 080 09 Page Register MFG Port Interrupt Controller 2 ODF DMA Controller 2 OFO OFF Numeric Coprocessor 170 177
3. Software Problems When installing a copy protected software package on the Equity 386 20 first try the installation at 20 MHz If this does not work properly try switching to 8 MHz for the installation If you are still unable to load the program at 20 MHz try loading at 8 MHz and then switching to 20 MHz When using a software package that uses a keydisk as its copy protection method try loading it at 20 MHz If this does not work enable the amp to Speed option in SETUP EQ386 20 6 4 3 89 Equity Series Computer EQUITY 386 20 Hard Disk Drive Types 15 reserved 16 57506 612 4 17 0 663 203 17 ST 506 977 5 7 300 977 405 CDC 942055 18 57506 977 17 977 568 9 57 506 1024 1 17 512 1023 595 20 157 503 73 5 7 300 732 1304 Toshiba MK 133FA STS06 733 1 17 300 732 426 Toshiba MK 134FA 2 ISTS06 733 5 7 300 73 1304 85 57506 30 4 7 0 336 102 24 5755 612 4 305 663 204 5 STS06 306 4 340 102 26 57506 612 17 670 204 7 5756 6 1 7 300 7x 406 28 5756 9 5 88 97 405 29 57 506 306 4 17 0 mo 102 30 57506 6 1 4 306 663 204 7506 732 7 300 732 426 30 975061 108 5 7 1023 425 33 none 34 none 3 i none 36 none y 38 none 39 none 40 none 0 1022 7022 848 COC 342 6 0612 42 ESDI 022 36 022 89 8 34216 106 43 57506 O24 7 5 2 923 680 3 ESD
4. 12 89 Common Questions amp Answers on the Equity 386 20 6 13 89 Tape Backup Systems Test Results 7 12 89 Equity Apex with Sysgen OmniBridge and BridgeFiler Drives 8 11 89 Using High Capacity ESDI and SCSI HDDs with the Equity Series 8 11 89 Novell Netware Compatibility Test Results for the Equity 386 20 Related Documentation Y 16299100502 Equity 386 20 MSDOS 3 3 Manual 16299100200 Equity 386 20 GW BASIC Manual M TM EQ386 Equity 386 20 Technical Manual M PM EQ386 Equity 386 20 Technical Reference Manual M PL EQ386 Equity 386 20 Parts List Y18499100100 Equity 386 20 User s Guide EQ386 20 8 9 22 89 Equity Series Computers
5. I 3 2 828 37 9 Toshiba MK 156F 4 57506 024 a 2 03 142 5 ca 46 157506 65 8 28 1 618 1408 NECOS147H 4 i none da 57506 420 820 405 Seagate 57251 49 57508 830 2 7 30 4583 ToshibaMK56FB so 57506 On 9 C24 i024 65 Seagate 574096 a 34 628 962 Toshiba MK S4F 52 feso 967 5 967 850 CDC 94166 101 53 ES0 7 7 36 967 9d CDC 94186 141 9 36 96 53d 94166 182 7 34 Micropolis 1354A 5 CDC 94166 101 2 T COC 94166 141 2 3 34 COC 94166 182 2 none 1 Mimiscribe 8425F Seagate 7125 2 For Western Digital ESDI Drive Maker default setting 3 Micropous 1325 Ataai 3085 Lanstor Lan64 Maxtor XT1095 Newbury NDR1085 4 Micropoits 323A Miniscribe 3035 Microscience 1050 Seagate ST4053 Types 1 through 47 are allocated at OFE401h IBM new AT compatible area Types 48 through 58 are aliocated at OFD2F 1h to OFDFFOh extended Hard Drive Parameter atea Equity Series Computers 413189 EQ386 20 7 EQUITY 366 20 Information Reference List Engineering Change Notices None Technical Information Bulletins 386 20 001 6 12 89 CHET CHET RM Board Connector Product Support Bulletins 6 12 89 Using Expanded Memory with the Equity and Apex 6 9 89 Equity Series Computers ROM History 4 19 89 Apex Apex Plus Equity Series Keyboards 5 16 89 Equity 386 20 Coprocessor Installation 6 12 89 Using the EEMM386 EXE Device Driver 6
6. SPEED switch selects between 8 MHz and 20 MHz When the computer is running at 8 MM the power light is red and at 20 MHz the light is green The VOLUME CONTROL controls the internal speaker s loudness Turn it to the right to increase the volume and to the left to decrease the volume EQ386 20 1 EQUITY 386 20 Connector Pin Assignments Parallel Port Connector P N NO SIGNAL NAME DIRECTION DESCRIPTION 1 STROBE 0 2 DATAO 0 Printer Data Bit 0 3 DATA1 0 Printer Data Bit 1 4 DATA2 0 Printer Dam Bit 2 5 DATA3 0 Printer Oata Bit 3 6 DATA4 0 Printer Data Bit 4 7 DATAS Printer Dam Bit 5 8 BATAS Printer Bam Bf 9 10 ACK Acknowledge 11 5 l Printer Busy 12 PE 1 End of Paper 13 SLCT Printer Select 14 AUTOFT Auto Feed 15 ERROR Printer Error 16 INIT t Printer initialize 17 SLCTIN 1 Printer Select In 18 GND Ground 19 GND Ground 20 GND Ground 21 GND Ground 22 GND Ground 23 GND Ground 27128 BIOS ROM type 24 GND Ground Must be installed either 25 GND Ground position 80387 Installed Serial Port Connector 80387 Not Installed 1 2 3 4 5 Factory Settings 00000 67 8 9 The following table shows the possible configurations you can use PIN NO SIGNAL NAME DIRECTION DESCRIPTION Memory Bank 0 Bank 1 Bulk2 Bank 3 1MB 256KB 1 Dam Carrier Detect 2M8 4 x 256KB 4 x256KB 2 R XD T Receive Dam 4MB 4x 1MB 3 TXDT Transmit Dam or
7. e hard disk drive try starting over with the Unconditional Format option in diagnostics When installing an optional expanded memory board or increasing memory on the internal memory board for use as expanded memory do not list the memory under the memory expansion option in SETUP That option is for EXTENDED memory ONLY If you are instaling an EGA or VGA card select SPECIAL OPTIONS as display type in SETUP This holds true even when you are using a color or monochrome monitor with these cards When instaling a hard disk drive be sure to consult the drive type tables on page EQ386 20 7 for the drive type which fits the drive you are installing Adding Memory Modules Using The total amount of memory must be one of the following MB 2 MB 4 MB 8 MB 10 MB or 16 MB Memory banks must be filled with one size SIMM You cannot mix SIMM types in one bank If you are using more than one memory bank they must be filled in pairs This means you can use 1 2 or 4 banks Each pair must be filled with the same type of SIMMs You must also fill them in order That means that the possible combinations are Bank 0 Bank 0 and Bank 1 or all four banks Shadow RAM It is only necessary to enable shadow RAM for the video ROM if you are using an EGA or VGA card CGA MDA and MGA cards are supported by the system ROM BIOS Therefore they are included in the shadow RAM setting for the BIOS ROM EQ386 20 5 EQUITY 386 20
8. hard disk indicator light release latch power indicator diskette drive key lock light diskette drive indicator light keyboard tional disk cable Switch siot socket CPU hard disk Control switch drive slot knob Computer Specifications CPU 80386 20 PGA 132 pins socketed CPU Clock 20 MHz 0 wait states 6 MHz 1 wait state switchable on the fly software controlled switch Bus Speed 6 MHz fixed OMA Clock 4 MHz fixed NPX 60367 20 PGA 68 pins socket only NPX Speed 20 MHz fixed DRAM 1 MB minimum 16 MB maximum on the memory board BIOS Two 272 20 chips socketed Interface One serial 9 pins D shell standard One parallel 25 pins D shell standard One video adapter optional One FDO connector up to 2 FDDs supported standard Two HOD connectors ESDI optional ST506 optional FOO 5 25 inch 1 2 MS for A standard 3 5 inch 1 44 MB 720 5 25 360 KB for 8 optional HOD 5 25 inch half height or fuil height SO MB ESDI 1 1 interleave optional 40 MB 57506 1 1 interleave optional Keyboard 101 key enhanced keyboard Lock On the front panel Switches Reset Clock speed select 20 2 8 MHz Monitor select Color monochrome Volume Audio speaker volume control DRAM Expansion Power Supply Input 115 VAC Min 92 V 4 A Max 132 V 230 VAC Min 1 V Max 2 5 A Max 265 V Frequency 49 61 H2 Power Consumption 115 VAC Appro
9. r Hard disk controller Reserved EQ386 20 4 4 3 89 Equity Series Computers Installation Support Tips Power The Equity 386 20 has a power supply that is switchable between 145 V for USA and Canadian use and 230 V for use in Other countries The voltage switch is located at the rear of the CPU between the AC inlet and the AC outlet see figure below voltage switch option card siots power outlet power inlet serial port parallel port WARNING The voltage is not changed between the AC inlet and the AC outlet If the CPU is switched for 230 V in order to function in Europe only peripherals certified for use at 230 V should be plugged into the outlet Installing floppy Disk Drives When installing a floppy disk drive as drive B remember to set the drive select jumper to the second position and attach the pass through connector on the floppy drive controller cable to the drive not the end connector If the drive does not function normally make sure that the drive type has been correctly selected in SETUP Also check that any special drivers that may be necessary have been installed correctly Installing Hard Disk Drives It is recommended that a 16 bit AT type hard disk controller be used in the Equity 386 20 If you must for some reason use an 8 bit XT type controller select drive type NONE in SETUP Equity Series Computers 4 3 89 EQUITY 386 20 If you are having difficulty in formatting th
10. ximately 60 W 230 VAC Approximately 60 w Surge Current 42 A 0 P 0 5 second more insulation Strength 115 VAC AC 1 25 kV 1 min AC FG AC secondary 230 VAC AC 1 25 kV 1 min AC FG On the main control board 16 SIMM sockets Applicable to both 256x1x9 and 1Mx1x9 AC 3 75 kV 1 min AC secondary Environmental Conditions OPERATING Temperature 410 Ft095 F 5 C to 35 C Humidity non condensing 20 to 80 Maximum Wet Bulb 29 degrees Vibration 0 2 G 0 5 G HDD Shock HDD 1G less then 10 ms Shock HDD 1 G 25 mm o w Hz Altitude HDD 0 to 3 000 m ASL EQUITY 386 20 NON OPERATING 4 F to 140 F 20 c to 60 10 to 90 40 degrees 1 6 no HOD 0 5 G HDD 3G lees than 10 ms 3G lt 25 mm o w Hz 300 to 3 600 m ASL STORAGE 40 F to 140 F 4o c to 60 C 5 to 96 45 degrees 3 no 30 G less then 10 me 30 G 25 mm O W Hz 300 to 3 600 m ASL Switch Settings CPU speed switch There are no DIP switches on the Equity 386 20 However there is a MONITOR SELECT switch a CPU SPEED switch and a VOLUME CONTROL on the front of the unit in the lower left hand corner Monitor select MONO COLOR Monochrome monitor Color composite EGA and VGA monitors Insulation Resistance 25M ohm more 500 VDC AC FG AC secondary 1 M ohm more 250 VDC SG FG Equity Series Computers 4 3 89 The CPU
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