DFI MegaLITH Plus User manual

·014110826·

l
COPYRIGHT 1991, BY DFIINC.
All rights reserved.
No part of this document may be copied or reproduced in any form or
by any means without the prior written consent of OFI, Inc.
OFI, Inc. makes no warranties with respect to this documentation and
disclaims any implied warranties of merchantability, quality, or fitness
for any particular purpose. The information in this document is sub-
ject to change without notice. OFI, Inc. reserves the right to make
revisions to this publication and to make changes to any and/or al/
parts of its content, at any time, without obligation to notify any person
or entity of such changes. Further, OFI, Inc. assumes no responsibil-
ity for any errors that may appear in this document.
OFI is a registered trademark of OFI, Inc . MegaLITH PLUS is a trade-
mark of OFI, Inc. All other product names mentioned are trademarks
or registered trademarks of their respective companies.
r
FCC STATEMENT ON CLASS B
This equipment has been tested and found to comply with the limits
for a Class B digital device, pursuant to Part 15 of FCC rules. These
limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a residential installa-
tion. This equipment generates, uses and can radiate radio frequency
energy and if not installed and used in accordance with the instruction
manual may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interfer-
ence to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to correct
the interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the receiver and equipment.
Connect the equipment into an outlet on a circuit different from
that to which the receiver is connected.
Consult the dealer or an experienced radio TV technician for help.
NOTICE:
(1) The changes or modifications not expressly approved by the party
responsible for compliance could void the user's authority to oper-
ate the equipment.
(2) Shielded interface cables must be used in order to comply with
the emission limits.

TABLE OF CONTENTS
INTRODUCTION ............................... ........................................... 1·1
HARDWARE .......................................................................... 1-1
SOFTWARE ........................................................................... 1-2
FEATURES AND SPECIFICATIONS ................................... 1-3
HARDWARE ................................................................... 1-3
SOFTWARE .................................................................... 1-4
TYPES OF MEMORY· AN OVERViEW .................................... 2·1
NAMING CONVENTIONS ..................................................... 2-1
CONVENTIONAL MEMORy ......................................... . 2-1
EXTENDED MEMORY ........... ......... ............... . ..... . ......... 2-4
EXPANDED MEMORY ............ . .......... . ......... . ................. 2-4
USING THE MegaLITH PLUS MEMORy ..................... 2-6
HARDWARE INSTALLATION .................................................... 3·1
BOARD CONFIGURATION SETIINGS ............................... 3-1
JUMPER SETIINGS ............ ................. .. ....................... 3-2
SW1 DEFAULT SETIING .............................................. 3-3
SW2 DEFAULT SETIING .............................................. 3-7
SW3 DEFAULT SETIING .............................................. 3-10
MEMORY INSTALLATION .. ........ .................. . ................... ... . 3-11
TYPES OF MODULES .............. ... ............................ . ..... 3-11
HOW TO INSTALL THE MODULES ............................. 3-11
WHERE TO INSTALL THE MODULES ........................ 3-12
BOARD INSTALLATION ...... ..... .. ... .. ...................... .............. 3-13
BACKING UP THE MegaLITH PLUS SOFTWARE
DISK ................................................................................. 3-13
INSTALLING THE MegaLITH PLUS ............................. 3-14
SOFTWARE INSTALLATION ..................................................... 4·1
DESCRIPTION ............. .. .... . ...... ....... ................ .. .............. ... ... 4-1
USING EXPANDED MEMORy ............................................. 4-3
MegaLlTH.SYS PARAMETERS SPECIFICATION ....... 4-3
EXAMPLES USING MegaLlTH.SYS ........................... .. 4-6
EMS ERROR MESSAGES ............................................. 4-7

USING VIRTUAL DISKS .......................... .... ........................... 4-8
DEFINITION . ..... ............. . ................ . ... . ............................. 4-8
HOW TO USE THE VIRTUAL DISK ............ .. .................. 4-9
LIST OF TABLES AND FIGURES
VIRTUAL DISK ERROR MESSAGES ............................. 4-9
USING THE PRINT BUFFER ........ .. ....................................... 4-10
SPOOLER INSTALLATION .............................................. 4-10
PSPOOUPSPOOLA PARAMETER SPECIFICATIONS . 4-11
EXAMPLES USING PSPOOL .......................................... 4-13
. USING THE SPOOLER .. .................................... ......... ..... 4-14
PSPOOUPSPOOLA ERROR MESSAGES ..................... 4-14
FIGURE 2·1: 1 MEGABYTE MEMORY MAP ........................... 2-2
FIGURE 2·2: RESERVED MEMORY ON AN AT OR
386 SYSTEM ........................................................ 2-3
FIGURE 2·3: EMS 4.0 MEMORY MAP ....... ........ ...................... 2-5
FIGURE 3-1: MegaLITH PLUS BOARD LAYOUT ................... 3-2
FIGURE 3-2: SW1 DEFAULT SETTING ................................... 3-3
APPENDIX A: LINEAR MEMORY MODE ................................... A·1
FIGURE 3-3: SW2 DEFAULT SETTING ................................... 3-7
FIGURE 3-4: SW3 DEFAULT SETTING .... ............. .................. 3-10
APPENDIX B: MegaLITH PLUS MEMORY
IMPLEMENTATION .; ........................................... B·1
FIGURE 3-5: BANK LOCATIONS ON THE MegaLITH PLUS. 3-12
FIGURE 3-6: REMOVING THE SYSTEM COVER ................... 3-15
FIGURE 3-7: MegaLITH PLUS INSTALLATION ...................... 3-15
FIGURE B·1: MegaLITH PLUS MEMORY
IMPLEMENTATION ................................ ... .......... B-1
TABLE 2·1:
ADDRESS FOR THE 1 MB MEMORY MAP ....... 2-2
TABLE 3·1:
SUMMARY OF SW1 SETTING ................ .......... 3-3
TABLE 3·2:
SUMMARY OF SW2 SETTING .......................... 3-7
TABLE 3·3:
I/O PORT ADDRESS SETTINGS ....................... 3-10
TABLE 3-4:
TABLE OF TESTED CHIPS .............. ..... ............. 3-11
TABLE 3·5:
BANK SELECTION AND CHIP
REQUIREMENTS ................................................ 3-13

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INTRODUCTION
HARDWARE
The MegaLITH PLUS memory board is a high speed, cost-effective
8MB, 16-bit memory board for the 286 and 386 systems that accepts
AT-expansion cards. Compatible systems include IBM PCIAT and
Compaq Deskpro 386/25.
The MegaLITH PLUS offers flexible and easy memory configuration.
It supports up to 32MB of EMS 4.0 and extended memory . The eight
megabytes of memory per board can be configured to all EMS, all
conventionallextended, or a combination of the two. The board can
backfill OK systems to 640K, in 1 28K steps while also providing EMS
memory for programs that require it.
The MegaLITH PLUS's EMS memory is hardware EMS. EMS page
registers are built into the hardware, so EMS functions are performed
quickly.
Setting up the board is easy. Most switch settings are made using
DIP switches that are almost self-explanatory. If you need to set up
many boards, you will probably be able to set them up without even
using the manual , once you've learned the switch functions.
The MegaLITH PLUS is compatible with operating systems such as
Novell, OS/2 and XENIX. The MegaLITH PLUS's several linear
memory modes are well suited for these types of operating systems.
The MegaLITH PLUS is fast enough to work in virtually all systems
available today. Almost all 16,20 and 25MHz 286 and 386 systems
have bus speeds of only six to ten MHz. The MegaLITH PLUS board
can run in systems with bus speeds of 12M Hz.
INTRODUCTION 1-1

SOFTWARE
The MegaLITH PLUS comes with software device drivers to install
EMS memory conforming to EMS version 4.0. In addition, RAM disk
and print spooler software are provided that can use either conven-
tional, extended or EMS memory.
The MegaLITH PLUS supports all EMS 4.0 capabilities including multi-
tasking functions . In addition to storing data, the MegaLITH PLUS
board with the EMS 4.0 software provides the following additional fea-
tures:
• Memory-resident programs like SideKick Plus can be loaded into
EMS memory, saving crowded conventional memory for other ap-
plications .
•
Programs can store most of their program codes in EMS memory,
again conserving limited conventional memory.
With its hardware backfill capability, the MegaLITH PLUS EMS
driver can provide superior performance for software packages
such as Microsoft Windows 3.0 and Quarterdeck DESOview Rev.
2.31.
The MegaLITH PLUS EMS device driver software lets you choose
from five EMS page frame base addresses. This feature lets you
work around address conflicts when other boards are installed that
access the same memory address.
1-2 INTRODUCTION
FEATURES AND SPECIFICATIONS
HARDWARE
• 8192 (8MB) of conventional , extended and expanded memory
• Supports 32 register sets for multitasking capability
• Easy installation with clearly marked DIP switch settings
• Backfills OK systems to 640K, in 128K steps, of conventional
memory . Memory can be used as either expanded memory, ex-
tended memory, or both.
Works with DOS, NOVELL, OS/2, XENIX, DESQview, Microsoft
Windows 3.0, Concurrent DOS XM and other operating systems
• Maximum expanded memory:
- 8M (one board)
- 32M (four boards)
• Maximum linear memory:
- 8M (one board)
16M (two boards)
• DRAM chip type:
- 256K x8 or 256K x9 (70 - 120 ns) SIMM
1M x8 or 256K x9 (70 - 120 ns) SIMM
INTRODUCTION 1-3

SOFTWARE
• Support for EMS 4.0 driver
MegaLlTH.SYS
Virtual Disk (Vdisk) programs provided
CMMDISKSYS - conventional memory
EXMDISKSYS - extended memory
EMSDISKSYS - expanded memory
• Printer spooler program provided
PSPOOL.COM
PSPOOLA.COM
PSPLHELP.COM
Installation program provided
1-4 INTRODUCTION
TYPES OF MEMORY
OVERVIEW
-
AN
This chapter describes the different kinds of memory and suggests
the most appropriate way to set up your board.
NAMING CONVENTIONS
In this manual, memory between OK and 640K is referred to as con-
ventional memory. Memory above the 1024K address is referred to
as extended memory . When conventional and extended memory are
referenced as one unit, they are called linear memory. Memory con-
forming to the Lotus/Intel/Microsoft (LIM) Expanded Memory Specifica-
tion is referred to as EMS memory. Enhanced Expanded Memory
Specification (EEMS) is a superset of EMS memory.
CONVENTIONAL MEMORY
Conventional memory refers to DOS memory below 640K. Generally
programs must fit into conventional memory to run, although some
programs use extended or EMS memory to store data files.
The 640K conventional memory size was designed around the 8088
microprocessor. This microprocessor, used in the IBM PC and PCIXT, is
capable of addressing only 1024K of memory. Operating systems such
as MS-DOS and PC-DOS and other application programs were limited
to the first 640K with the remaining 384K address space reserved for
video RAM, ROM BIOS, and other system devices. Figure 2-1 gives
an illustration of the 1 MB memory map. Below it is a table of decimal
and hexadecimal addresses for the 1 MB memory map .
TYPES OF MEMORY- AN OVERVIEW 2-1

1024K The
ar ea reserved (or tbe
I Reserved I
t-- ROM BIOS and hardware devica
Memory devices (d;,ploy adopter
ards,
nerwort board .. Ind bird diet
640K
"'nlroIlera ).
Add-On Memory
The area where programs
are execuled.
.Motherboard
Memory
OK
Conventional Memory
FIGURE 2·1. 1 MEGABYTE MEMORY MAP
DECIMAL
HEX
MEMORY USE
1024K
100000h
Reserved address space
960K
FOOOOh
640K - 1024K
896K
EOOOOh
for video memory,
832K
DOOOOh
ROM BIOS, and some
768K
COOOOh
system devices
704K
BOOOOh
640K
AOOOOh
Conventiona l
576K
90000h
memory address space
512K
80000h
OK - 640K
448K
70000h
for DOS and
384K
60000h
application programs
320K
50000h
256K
40000h
192K
30000h
128K
20000h
64K
10000h
OK
OOOOOh
TABLE 2·1. ADDRESS FOR THE 1MB MEMORY MAP
2-2 TYPES OF MEMORY - AN OVERVIEW
Reserved memory in Figure 2-1 is divided into the following areas:
•
•
•
ROM BIOS area - the part of DOS that is built into every PC and
manages the hardware basics, such as reading the keyboard ,
driving the printer , and displaying information on the screen.
Screen Buffer on Video Display RAM - the area that stores the
information that appears on the video display monitor.
Hardware-specific ROMs - the area for the enhanced graphics
adapter (EGA) display and hard disk controller.
Refer to Figure 2-2 for an illustration on how reserved memory is nor-
mally configured .
10000H
FOOOH
EOOOH
D400H
C400H
BSOOH
BOOOH
AOOOH
_--.-- ---,- _1024K
ROM
BIOS
_-+----+-_ 960K
Extra
ROM
LIM
Data Area
896K
848K
--+--=.,---+-- 784K
--,g~,-- 736K
--+--=:..:...=---+-- 704K
EGA!
VGA
_-'-- -- -'--_ 640K
III -UNUSED
FIGURE 2·2. RESERVED MEMORY ON AN AT OR 386 SYSTEM
TYPES OF MEMORY -AN OVERVIEW 2-3

EXTENDED MEMORY
The 286 and 386 CPU can address more than 1 MB of memory , but
the DOS operating system still places a 640K cap on the size of con-
ventional memory. Extended memory, also referred to as protected
mode memory, is mapped to a 1024K (1.0M) or higher address.
Under the DOS operating system , extended memory is pr i m~rily . us~
for RAM disks, print spoolers, and EMS 4.0. No DOS appll~tIOn IS
able to execute in extended memory, and few DOS applications are
able to make any use of extended memory . Linear-memory operating
systems, e.g ., XENIX, Novell and OS/2 , can use extended memory
more effectively than DOS.
EXPANDED MEMORY
EMS (Expanded Memory Specification) memory, also known as LIM
(LotusllntellMicrosoft) memory and expanded memory was developed
by the LIM namesake companies to give programs additional room to
load their data files . Programs written for EMS 4.0 can store both
data and program codes into EMS memory . Program code stored in
EMS 4.0 memory can run from within EMS memory.
EMS memory is addressed by a method called page swapping : As
shown in Figure 2-1, part of the 640K-1024K address range IS r e-
served for system devices. The MegaLlT~ PLUS 's MegaLlT~.SYS
device driver program sets up a 64K contiguous page frame In the
768K-896K (COOOO-DFFFF in hex) memory. Four of t~es~ pages can
be mapped into the 64K page frame. When the application program
needs to access data stored in EMS memory, it finds which page the
data is located, then ' moves the needed page into the base frame.
The previous page is swapped out of the page frame and moved back
into the EMS board.
2-4 TYPES OF MEMORY - AN OVERVIEW
Since the size of the mapping area is not limited to 64K, any area
between 16K to 1 MB can be mapped. Th is mapping area can be set
and changed by the program where several non-adjacent "mapping"
areas are possible .
Figure 2-3 shows how a 16K page of expanded memory can be
mapped into the conventional memory space of the PC. An EMS
physical page can be pos i tioned logically in any empty memory space
between 256K and 1024K.
C<>nw<>11onaJ
Momo<y
102 4K BIOS
8AOK VlOEO
elASMomo<y
U~ te 32MB dlvk!.a'
L:n1o It!K io; >eaJ pa g .. .
Any Ioglc.a/ ~ . un
o.",.O~ I O" "'Y
phy.leal page.
AGURE 2-3. EMS 4.0 MEMORY MAP
In summary, these expanded memory capab i lities make it possible to
run not just one, but multiple programs concurrently in expanded
memory. The process of multitasking (letting several programs run
simultaneously by giving each a "slice" of time in turn) is now possible
because context-switch i ng (the process of allocating these time slices)
can be done at processor speeds.
'tYPES OF MEMORY -AN OVERVIEW 2-5

USING THE MegaLITH PLUS MEMORY
If your system has only 512K memory, you should use the MegaLITH
PLUS to backfill the system to 640K. MegaLITH PLUS can offer a
total of 8192K onboard memory. The remaining 8064K of memory can be
configured as all EMS, all extended, or a combination of the two.
If you have software that req.uires extend~d memory, or you are run-
ning a linear-memory operating system like Novell, XENIX or OS/2,
you should use the MegaLITH PLUS for linear memory.
If you have any EMS 4.0 or 3.2 programs, you should set up the
MegaLITH PLUS for EMS.
You can set the board for EMS memory without leaving the EMS
memory available for your programs by installing a RAM disk similar
to those provided for in the MegaLITH PLUS package.
In rare cases, you may not be able to install the Mega~ITH PLUS as
an EMS board due to a page frame address conflict With another ex-
pansion card. In this case, you may need to set the MegaLITH PLUS
for linear memory.
2-6 TYPES OF MEMORY -AN OVERVIEW
HARDWARE INSTALLATION
This chapter describes the installation of the MegaLITH PLUS
memory expansion board to your system" It is divided into three main
sections. Section 1 details the board configuration settings. Section 2
describes memory installation and section 3 illustrates the installation
of the board into your system.
If you will be using the MegaLITH PLUS for linear memory, you need
to know how much conventional and extended memory your system
currently has. Run your system's configuration setup program to
check your system's hardware configuration. You can also run the
DOS CHKDSK program to display total conventional memory
onboard.
BOARD CONFIGURATION SETTINGS
This section provides a detailed description on the MegaLITH PLUS
board's layout and factory switch settings . It provides the basic infor-
mation required to configure the board to your system.
Shown in Figure 3-1 is the MegaLITH PLUS board layout. The left-
hand side of the board consists of the SIMM sockets. There are a
total of 4 banks for the 256K x 8/256K x 9 or 1Mx 811 Mx 9 (70 to
120 ns) SIM modules. On the upper right-hand side of the board are
the three DIP switches. DIP SW1 contains the switches to enable/disable
parity checking and onboard memory configuration settings. DIP SW2
and SW3 contain the switches for reserved linear memory settings and V
o port designation respectively.
HARDWARE INSTALLATION 3-1

h
BANK 0 BANK 1 BANK 2 BANK 3
SW1
SW2 SW3
,------,I D D
IIIIII IIII
J1 D
J2 D
J3 D
FIGURE 3-1. MEGALITH PLUS BOARD LAYOUT
JUMPER SETTINGS
Jumper J1
DRAM Type Select i on
ON: 1M SIMM (Default)
Jumper J2
EMS Data Access
ON: 8- Bit
OFF: 256K SIMM
OFF : 16-B it (Default)
Note: If for some reasons your system refuses to work on a 16-bit
EMS, please change the jumper setting to 8- bit mode.
3-2 HARDWARE INSTALLATION
Warning: Jumper J3 should always be OFF (default setting) . Recon-
figuring this jumper will cause problems to the board .
SW1 DEFAULT SETTING
DEFAULT SETIING
All EXPANDED MEMORY
FIGURE 3-2. SW1 DEFAULT SETTING
Figure 3-2 shows the default setting for SW1 . SW1-8 is used to set
the board for parity check enable/disable. Switches SW1-1 to SW1-7
are set according to the number of memory you have onboard. The
default setting for the MegaLITH PLUS board is SW1-8 ON (parity
enable) . Listed be l ow is a summary of switch settings for conven-
ti onal/extended memory already installed onboard .
Note: Leave SW1-8 ON (parity enable) unless you have a special
reason to disable par i ty checking .
Linear
Memory on
System (KB)
0
128
256
384
512
640
768
896
1024
1 2
ON ON
ON ON
ON
ON
ON
ON
ON ON
ON ON
ON ON
ON ON
ON ON
SW1
345
ON
ON ON
ON ON
ON
ON
ON
ON
ON
ON ON
ON
ON OFF
ON ON
OFF
ON ON
OFF
ON
ON OFF
ON OFF
ON
6 7
ON ON
ON
OFF
OFF
ON
OFF OFF
ON
ON
ON OFF
OFF
ON
OFF OFF
ON
ON
HARDWARE INSTALLATION 3-3

Linear
Memory on
System (KB)
2176
2304
2432
2560
2688
2816
2994
3072
4224
4352
4480
4608
4736
4864
4992
5120
1 2
ON
ON
ON
ON
ON
ON
ON
ON
ON OFF
ON OFF
ON OFF
ON
OFF
ON OFF
ON OFF
ON OFF
ON OFF
3-4 HARDWARE INSTALLATION
SW1
3 4
ON ON
ON ON
ON ON
ON ON
ON
ON
ON ON
ON ON
ON
OFF
5
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
6
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
7
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
Linear
Memory on
System (KB)
7 296
7424
7 552
7680
7808
7936
8064
8192
9344
9472
9600
9728
9856
9984
10112
1 0240
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
2
OFF
OFF
OFF
O FF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
ON
ON
SW1
3 4
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
ON ON
ON
OFF
ON
OFF
ON OFF
ON OFF
ON OFF
ON OFF
ON OFF
OFF
ON
5
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
6 7
ON OFF
OFF ON
OFF
OFF
ON ON
ON
OFF
OFF
ON
OFF OFF
ON ON
ON
OFF
OFF
ON
OFF OFF
ON ON
ON
OFF
OFF
ON
OFF OFF
ON
ON
HARDWARE INSTALLATION 3-5

Linear
SW2 DEFAULT SETTING
Memory on
SW1
System (KB) 1 2 3 4
ON
1 2 3 4 5 6
~~~~~~
RESERVED FOR
LINEAR MEMORY . TYPE
OFF
FIGURE 3·3. SW2 DEFAULT SETTING
12416 OFF OFF ON
ON ON ON OFF
12544 OFF OFF ON
ON ON OFF ON
Figure 3-3 shows the default setting for SW2.
SW2 is reserved for
12672
OFF OFF ON ON ON OFF OFF
12800 OFF OFF
ON ON OFF ON
ON
linear memory. The default setting for SW2-1 to SW2-6 is ON. Refer
12928 OFF OFF ON ON OFF
ON OFF
to Table 3-2 for a summary of switch settings for SW2.
13056 OFF
OFF ON ON OFF OFF
ON
13184 OFF OFF
ON ON OFF OFF OFF
13312
OFF OFF ON OFF ON
ON ON
MegaLITH PLUS
Reserved for
SW2
ConventionaV
Extended Memory
1 2 3 4 5 6
* 128
ON
ON ON ON
ON ON
256
ON
ON ON
ON ON OFF
14464 OFF OFF OFF ON ON OFF
ON
14592
OFF OFF OFF ON ON ON
OFF
14720 OFF OFF OFF
ON ON OFF OFF
14848 OFF OFF OFF
ON OFF ON ON
14976
OFF OFF OFF ON OFF
ON OFF
15104
OFF OFF OFF ON OFF OFF
ON
15232 OFF OFF OFF
ON OFF OFF OFF
15360 OFF OFF OFF
OFF ON ON
ON
384
ON ON ON
ON OFF ON
5 12
ON ON ON ON
OFF OFF
640
ON ON ON
OFF
ON ON
768
ON ON
ON
OFF
ON
OFF
896
ON ON ON
OFF OFF ON
1024
ON
ON ON OFF OFF OFF
1152
ON ON OFF ON ON
ON
1280
ON ON OFF ON ON
OFF
1408
ON ON OFF ON
OFF
ON
1536
ON ON OFF ON OFF OFF
1664
ON ON
OFF OFF ON ON
1792
ON ON OFF OFF ON
OFF
1920
ON ON OFF OFF
OFF
ON
2048
ON
ON OFF OFF
OFF OFF
* •
DEFAULT
• DEFAULT
TABLE 3·1. SUMMARY OF SW1 SETTING
3-6 HARDWARE INSTALLATION HARDWARE INSTALLATION 3-7

MegaliTH PLUS
Reserved for
ConventionaV
Extended Memory
4224
4352
4480
4608
4736
4864
4992
5120
5248
5376
5504
5632
5760
5888
6016
6144
1 2
OFF ON
OFF ON
OFF ON
OFF
ON
OFF ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF ON
OFF
ON
OFF
ON
OFF ON
OFF ON
OFF
ON
OFF
ON
SW2
3 4 5 6
ON ON ON ON
ON ON
ON OFF
ON ON OFF
ON
ON
ON OFF OFF
ON OFF
ON ON
ON
OFF
ON OFF
ON OFF OFF
ON
ON
OFF OFF
OFF
OFF
ON ON ON
OFF ON ON OFF
OFF
ON
OFF
ON
OFF ON OFF
ON
OFF OFF
ON
ON
OFF OFF
ON OFF
OFF OFF OFF
ON
OFF OFF
OFF OFF
----------------------
3-8 HARDWARE INSTALLATION
~
I
MegaLITH PLUS
Reserved for
ConventionaV
Extended Memory
6272
6400
6528
6656
6784
6912
7040
7168
7296
7424
7552
7680
7808
7936
8064
8192
1 2
OFF OFF
OFF OFF
OFF
OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
SW2
3 4 5 6
ON ON ON ON
ON
ON ON
OFF
ON
ON OFF
ON
ON
ON OFF OFF
ON OFF
ON ON
ON OFF
ON
OFF
ON OFF OFF
ON
OFF OFF
OFF OFF
OFF
ON
ON
ON
OFF
ON
ON OFF
OFF ON OFF
ON
OFF
ON OFF OFF
OFF OFF
ON
ON
OFF OFF
ON
OFF
OFF OFF
OFF
ON
OFF OFF
OFF OFF
TABLE 3·2. SUMMARY OF SW2 SETTING
HARDWARE INSTALLATION 3·9

SW3 DEFAULT SETTING
1/0 PORT FOR EMS
FIGURE 3-4. SW3 DEFAULT SETIING
Figure 3-4 shows the default settings f~r SW3 . SW3 is used for 1/9
port address sett i ngs. The default setting for the MegaLITH PLUS IS
SW3-1 ON, SW3-2 OFF, SW3-3 ON and SW3-4 OFF. The default
setting for I/O port address is 258H . Refer to Table 3-3 for a sum-
mary of I/O port address settings for SW3 of the MegaLITH PLUS.
110
ADDRESS
SW3
2 3 4
0208 H
ON ON
ON ON
0218H
ON ON
ON
OFF
0228H
ON ON
OFF
ON
0238H
ON ON
OFF
OFF
0248H
ON
OFF
ON
ON
*
0258H
ON
OFF
ON
OFF
0268H
ON
OFF OFF
ON
0278H
ON
OFF OFF OFF
0288H
OFF
ON ON
ON
0298H
OFF
ON
ON
OFF
02A8H
OFF
ON
OFF
ON
02B8H
OFF
ON
OFF OFF
02C8H
OFF OFF
ON ON
02D8H
OFF
OFF
ON
OFF
02E8H
OFF OFF OFF
ON
02F8H
OFF OFF OFF OFF
• DEFAULT
TABLE 3·3. I/O PORT ADDRESS SETIINGS
3-10 HARDWARE INSTALLATION
MEMORY INSTALLATION
TYPES OF MODULES
To install the maximum 8192K (8MB) of memory on the MegaLITH
PLUS memory expansion board, you will need 8 pieces of 1Mx9 SIM
modules . The chips must all be rated at a maximum access time of
70 to 120 nanoseconds (ns).
The following SIM modules have been tested good with the MegaLITH
PLUS board . Most other brands will work with this board, but a few
untested brands may fail to do so.
BRAND
PANASONIC
PANASONIC
OKI
SIEMENS
NEC
FUJITSU
MITSUBISHI
CHIP NUMBER
MN41 C4256-08
MN41 C1 000SJ-08
M511000A-08
HYB511 000AJ-70
NEC421 000-80
F81 C1 000BJ - 80
M5M41 000BJ-80
TABLE 3-4. TABLE OF TESTED CHIPS
HOW TO INSTALL THE MODULES
Computer components are easily damaged by stat ic electricity. Be
careful to handle the MegaLITH PLUS only by its edges. Do not
touch any of the metal circuitry wi th your hands, specifically, the gold
contacts. Do all of the preparation work on a static-free surface .
HARDWARE INSTALLATION 3-11

Position the legs of the modules above the SIMM bank .. Seat the.le~s
of the module into the bank. Make sure that each leg I~ seated In Its
respective socket before pressing the module securely Into the bank .
Check that none of the legs are bent under the module.
WHERE TO INSTALL THE MODULES
You will need two (2) to eight (8) SIM modules to populate onboard
memory . The MegaLITH PLUS can be configured to 512K, 1M, 1.5M,
2M, 4M, 6M and 8M memory sizes.
BANK 0 BANK 1 BANK 2 BANK 3
SW1 SW2 SW3
L----JIDD
IIIIII IIII
J1D
J2D
J3D
FIGURE 3-5. BANK LOCATIONS ON THE MEGALITH PLUS
Figure 3-5 shows the location of the banks . Make sure that the DIP
switch SW1-8 is set ON to enable the memory parity check functi,on.
See the section on Board Configuration settings to set the DIP sWitch
SW1-8.
3-12 HARDWARE INSTALLATION
The table below summarizes the bank locations and number of SIM
modules needed for the corresponding memory sizes.
MEMORY
256KX8 OR BANK 1MX8 OR
BANK
SIZE
256KX9 SELECTION 1MX9
SELECTION
SIMM SIMM
512K
2 pes .
BANK °
1M
4 pes .
BANK 0, 1
1.
5M
6 pes .
BANK 0, 1, 2
"
2M
B pes .
BANK 0, 1, 2, 3 2
pes .
BANK °
4M
4 pes .
BANK 0,1
6M
6 pes .
BANK 0, 1, 2
BM
B pes .
BANK 0, 1, 2,3
* Use only either 256K or 1M memory configuration and not both.
Note: Use DRAM chips with speed of 70 ns to 120 ns.
TABLE 3-5. BANK SELECTION AND CHIP REQUIREMENTS
BOARD INSTALLATION
BACKING UP THE MegaLITH PLUS
The MegaLITH PLUS software disk is a single-sided, eight sector
non-system disk . It can be used with PC-DOS 3,0 or above . Before
you begin, you must first backup the original MegaLITH PLUS utility
disk. The following steps are used to back up the MegaLITH PLUS
software programs.
1. Prepare a blank formatted disk for copying the files from the origi-
nal disk .
2. Put a write-protect tab on the or i ginal diskette. This will prevent
accidental erasures during the copy process.
HARDWARE INSTALLATION 3-13

3. Boot your PC/AT system.
4. Copy the MegaLITH PLUS programs to a blank formatted disk.
a. If you have only one floppy drive, type:
COpy A:'*.* B: <Enter>
Note: The system will prompt you to change the source (A:) and
destination (8:) diskettes although you're using only one
floppy disk drive.
b. If you have two floppy drives, insert the MegaLITH PLUS
software disk in drive B and type:
COpy B:'*.*A: <Enter>
5. Store the original MegaLITH PLUS disk in a safe place.
INSTALLING THE MEGALITH PLUS
If you are installing the MegaLITH PLUS for the first time, install the
MegaLITH PLUS memory expansion board into the bus slot of your
system. Insert the backup utility disk into drive A and type
INSTALL.EXE. Before you begin installation, access the READ.ME
file using the TYPE command under DOS and read the information
carefully. After reading the READ.ME file, type INSTALL at the DOS
prompt to begin installation . The program will guide you through a
series of questions and instruct you on the proper installation of the
board.
Additional details on the MegaLITH PLUS utility program disk are
found on the next chapter.
3-14 HARDWARE INSTALLATION
The steps for the proper installation of the board are listed below.
1. Unlock your system unit, turn off the power, and unplug the
power cord.
2. Remove the cover mounting screws from the rear of the sys-
tem unit. After removing the mounting screws slide the top of
the case forward and lift the cover. Refer to Figure 3-6.
FIGURE 3-6. REMOVING THE SYSTEM COVER
3. Remove the blank cover plate from any empty 16-bit expan-
sion slot. (Please refer to Figure 3-7). Save the screw.
FIGURE 3-7. MEGALITH PLUS INSTALLATION
HARDWARE INSTALLATION 3-15

4. Firmly and carefully plug the prepared MegaLITH PLUS board
into the selected slot. The gold contacts at the base of the
card go into the connector on the motherboard.
5. Replace the adapter mounting screw.
6. Replace the system unit cover and reattach all cards.
3-16 HARDWARE INSTALLATION
SOFTWARE INSTALLATION
This section describes the use and operation of the MegaLITH PLUS
software, including the EMS device drivers, RAM disk device drivers,
and print spoolers.
DESCRIPTION
Your MegaLITH PLUS diskette includes the following programs:
1. INSTALL.EXE
This program facilitates the setting of the DIP switches on the
MegaLITH PLUS memory expansion board. It also automatically
creates or modifies the CONFIG.SYS and the AUTOEXEC.BAT to
facilitate the installation of the MegaLITH PLUS's drivers and utili-
ties .. To use the program, follow the instructions prompted on the
screen.
2. MegaLlTH.SYS
MegaLlTH.SYS is a device driver conforming to EMS version 4.0.
You must tell DOS to install the EMS driver by including a com-
mand line in the CONFIG.SYS file for application programs using
the expanded memory.
3. EMSDISK.SYS
EMSDISK.SYS is a device driver using EMS memory to simulate
a virtual disk. In the CONFIG.SYS file, the command line to use
EMSDISK.SYS must be placed after the command line which de-
fines MegaLlTH.SYS.
SOFTWARE INSTALLATION 4-1

4. CMMDISK.SYS
CMMDISK.SYS is a device driver using conventional memory to
set up a RAM disk.
5. EXMDISK.SYS
EXMDISK.SYS is a device driver using extended memory to set
up a RAM disk.
6. PSPOOLA.COM
PSPOOLA.COM uses EMS memory for print spooling. It lets you
do other computing tasks while the computer is printing .
7. PSPOOL.COM
PSPOOL.COM uses conventional memory for print spooling. It
lets you do other computing tasks while the computer is printing.
S. PSPLHELP.COM
This program shows the PSPOOL and PSPOOLA command syn-
tax. It also gives a listing of all spooler options and their mean-
ings.
4-2 SOFTWARE INSTALLATION
USING EXPANDED MEMORY
The LotuS/lntel/Microsoft Expanded Memory Specification defines the
software interface of the Expanded Memory Manager {EMM) as a de-
vice driver that controls and manages the interface between DOS ap-
plication programs and expanded memory. If you are using the
MegaLITH PLUS for EMS memory, the MegaLlTH.SYS expanded
memory manager (EMM) must be installed.
Up to four MegaLITH PLUS cards with 32MB of expanded memory
can be installed using the MegaLlTH.SYS driver.
To install the EMM, use an ASCII text editor to either create or modify the
CONFIG.SYS file. This file must be in the root directory of the boot disk.
(The boot disk is usually hard disk C or the drive A system flo~y.)
You can select the 1/0 port and base segment addresses of the
MegaLITH PLUS expanded memory by properly specifying the pa-
rameters.
MEGALlTH.SYS PARAMETER SPECIFICATION
The full command format for using MegaLlTH . SYS is as follows:
DEVICE = MegaLlTH.SYS [/B=xxxx] [IP=nnn{;mmm}] [/H=yy]
[/S=zz] [/L] [1X=aaaa-bbbb] [/1=cccc-dddd] [IT =tttt]
18= xxxx
xxxx is the EMS page frame base address in hexadecimal. In
expanded memory management, a contiguous 64K page frame
segment must be reserved. The following are valid page frame
base addresses: COOO, C400 , caoo, CCOO and 0000. The de-
fault page frame base address is COOO.
SOFTWARE INSTALLATION 4-3