SeaLevel PROM-III User manual

Sealevel Systems, Inc.

155 Technology Place

P.O. Box 830

Liberty, SC 29657 USA

Phone: (864) 843-4343

FAX: (864) 843-3067

www.sealevel.com

PROM-III

USER MANUAL

Contents

INTRODUCTION ........................................................................ 1

OVERVIEW ...........................................................................................1

WHAT’S INCLUDED..............................................................................1

FACTORY DEFAULT SETTINGS..............................................................1

CARD SETUP............................................................................. 2

ADDRESS SELECTION............................................................................2

ANNABOOKS PROMKIT SOFTWARE CONFIGURATION...........................4

INSTALLATION.......................................................................... 6

TECHNICAL DESCRIPTION ....................................................... 7

EPROM Page Format....................................................................8

Software Examples........................................................................8

SPECIFICATIONS....................................................................... 9

ENVIRONMENTAL SPECIFICATIONS.......................................................9

MANUFACTURING................................................................................9

POWER CONSUMPTION........................................................................9

MEAN TIME BETWEEN FAILURES (MTBF)..........................................9

PHYSICAL DIMENSIONS........................................................................9

APPENDIX A -TROUBLESHOOTING....................................... 10

APPENDIX B -HOW TO GET ASSISTANCE............................. 11

APPENDIX C -SILK-SCREEN.................................................. 12

APPENDIX D -SCHEMATIC .................................................... 13

WARRANTY............................................................................ 15

Figures

Figure 1 -Address Selection Table..................................................................2

Figure 2 -Header E2, Device Selection..........................................................3

Figure 3 -Header E3 (Write Protect for Flash EPROMs).............................4

Figure 4 -Header E4, PROM-IIIB Jumpers ..................................................5

Figure 5 –EPROM Page Format Table..........................................................8

Introduction

Sealevel Systems PROM-III Page 1

Introduction

Overview

The Sealevel Systems PROM-III uses bank switching procedures to supply the

PC with access to 1 Meg of memory in a 16K footprint. The board can be

populated with up to eight 128K x 8 EPROM (27C010), Flash EPROM

(28F010), Static RAM, or Battery Backed RAM Modules. This memory can be

utilized for Diskless operation of PCs, data storage areas, dedicated code, etc.

Designed to be compatible with Annabooks PromKit, the PROM-III when used

in conjunction with Promkit, provides a turnkey solution for the embedded PC

designer, allowing the use of low cost PCs in environments that would prove

fatal to mechanical drives.

What’s Included

The PROM-III is shipped with the following items. If any of these items are

missing or damaged, contact the supplier.

•PROM-III Adapter

•PROM Software

•User Manual

Factory Default Settings

The PROM-III factory default settings are as follows:

Base Memory Location Wait State

D000 Off

To install the PROM-III using factory default settings, refer to Installation on

page 6.

For your reference, record installed PROM-III settings below:

Base Memory Location Wait State

Card Setup

Sealevel Systems PROM-III Page 2

Card Setup

The PROM-III contains several jumper straps which must be set for proper

operation.

Address Selection

You must select a base address for the board that does not conflict with any

other EPROMs or PC memory areas. A DIP-switch (SW-1) is used to set the

address. Some known conflicts are address C000:0 if you have EGA or VGA

video, and address E000:0 through E000:FFFF (segment E) on some AT

models. We recommend D000:0, however, this may conflict with extended

memory. If you are using an Extended Memory Manager you should exclude

the address area of the PROM-III in your command line.

Base Address A14 A15 A16 A17

C000:0000 On On On On

C400:0000 Off On On On

C800:0000 On Off On On

CC00:0000 Off Off On On

D000:0000 On On Off On

D400:0000 Off On Off On

D800:0000 On Off Off On

DC00:0000 Off Off Off On

E000:0000 On On On Off

E400:0000 Off On On Off

E800:0000 On Off On Off

EC00:0000 Off Off On Off

Figure 1-Address Selection Table

Note: Setting the switch on or closed corresponds to a ‘0’ in the address, while

leaving it off or open corresponds to a ‘1’.

Board Enable / Disable: The PROM-III can be enabled or disabled with switch

position 2, marked ‘EN’, on the DIP-switch. The PROM-III is enabled with the

switch ‘On’ or ‘Closed’ and disabled when ‘Off’ or ‘Open’.

Card Setup

Sealevel Systems PROM-III Page 3

Wait State Generation: Closing the ‘W’ switch (position #1) generates a wait

state to the PC Bus for every board access. This may be necessary when

running in extremely fast machines that do not slow down to the (normal) 8

Megahertz (MHz) speed for bus accesses. This should not be necessary for

most machines when utilizing 250 nano-second (ns) EPROMs. If you suspect a

speed problem, try setting the ‘W’ switch ‘On’, or ‘Closed’.

Jumper E1: This header used only for Flash EPROMs. Be sure to remove this

Jumper if you are using 27010 EPROMs or 128K RAMs.

Jumper Block E2: The PROM-III allows the use of 27010 EPROM, 28F010

Flash EPROM, 128K byte Static RAM, or battery backed RAM modules

(Dallas Semiconductor part # DS1245Y). The jumpers on E2 provide for these

options. The board is divided into two groups, socket U1 through U6, and U7

through U8. This provides a mixture of up to 768K bytes of EPROM (U1-U6),

and up to 256K bytes of RAM (U7-U8) or vice-versa. The selection is made

for Group 1 (U1-U6) by setting the top row of jumpers on E2 either all to the

right for EPROM (and Flash), or all to the left for RAM (and battery backed

modules). The selection for group two (U7-U8) is on the bottom row of E2,

again, all jumpers to the right selects EPROM, and all jumpers to the left

selects RAM. See the examples below:

U1-U6RE

U7-U8

This setting allows up to 1Mbyte

of EPROM, or Flash EPROM in

Groups 1 & 2

U1-U6RE

U7-U8

U1-U6RE

U7-U8

This setting allows up to 768Kbyte

of EPROM in Group 1

256 Kbyte of SRAM in Group 2

U1-U6

U7-U8

This setting allows up to 768 Kbyte

of SRAM in Group 1

256 Kbyte of EPROM in Group 2

This setting allows up to 1Mbyte

of Static RAM(SRAM) in

Groups 1 & 2

Figure 2-Header E2, Device Selection

Card Setup

Sealevel Systems PROM-III Page 4

Jumper E3: used only if a 27010 EPROM (or 28F010 Flash) is installed in U1

and there is a need to protect it from being written to . This jumper prevents U1

from being erased and re-written during (Flash or RAM) program updates.

Position ‘A’ is for Flash EPROM programming only, while position ‘B’ is for

27010 EPROMs, RAM Modules, and ‘program-protecting’ a Flash EPROM

device.

A B

Figure 3-Header E3 (Write Protect for Flash EPROMs)

Annabooks Promkit Software Configuration

To use the PROM-III with Annabooks PromKit Diskless EPROM Software,

simply follow the initial PromKit instructions. The PROM-III default address

should be set at address segment D000:0, the enable switch should be ‘On’, or

‘Closed’ and the wait state switch ‘Off’, or ‘Open’. Note that the EPROM

containing the file xxx.pk1 is placed in socket U1, xxx.pk2 is placed in socket

U2, etc. If you are using the board to emulate two drives (group 1 and 2), be

sure to follow the instructions carefully.

If using Flash EPROMs or SRAM software is supplied with the board to

program Flash EPROMs or load the RAM with the PromKit files. The ‘readme’

file on the Sealevel PROM-III has instructions and examples for these

operations.

Card Setup

Sealevel Systems PROM-III Page 5

Header E5: This header enables the on board battery for CMOS SRAM. It is

very important to install this jumper after the CMOS SRAM is installed.

Note: Installing CMOS SRAM while a jumper is in place could result in damage

to the CMOS SRAM!

Header E4: These jumpers are used in conjunction with E2 to determine if the

board is configured for SRAM or EPROM. Please follow the examples below

in configuring your board. The left column of pins on Header E4 control the

chip selects for U1 through U6 and the right column control the chip selects

for U7 and U8.

1 - 6

7 - 8 E

1 - 6

7 - 8

1 - 6

7 - 8

1 - 6

7 - 8

E4 Configured for 1M EPROM

Configured for 768K EPROM (U1-6)

256K SRAM (U7-8)

Configured for 768K SRAM (U1-6)

256K EPROM (U7-8)

Configured for 1M SRAM

Figure 4-Header E4, PROM-IIIB Jumpers

Note: Incorrectly setting E4 will result in damage to the battery!

E2 and E4 must correspond to EPROM and RAM memory selections, if they

do not errors will be experienced in programming and reading data from

EPROM / SRAM.

Installation

Sealevel Systems PROM-III Page 6

Installation

The PROM-III can be installed in any of the PC ISA expansion slots. The

PROM-III contains several jumper straps for each port which must be set for

proper operation prior to installing the adapter into the computer.

1. Identify an unused area of memory in which to install thePROM-III.

2. If you are using a memory manager (i.e. EMM386, QEMM386, Blue Max,

etc.) exclude the memory area in which the PROM-III will reside.

3. Turn off PC power. Disconnect the power cord.

4. Remove the PC case cover.

5. Locate an available slot and remove the blank metal slot cover.

6. Gently insert the PROM-III into the slot. Make sure that it is seated

properly.

7. Replace the screw.

8. Replace the cover.

9. Connect the power cord.

Installation is complete.

Technical Description

Sealevel Systems PROM-III Page 7

Technical Description

The Sealevel Systems PROM-III uses bank switching procedures to supply the

PC with access to 1 Meg of memory in a 16K footprint. The board can be

populated with up to eight 128K x 8 EPROM (27C010), Flash EPROM

(28F010), Static RAM, or Battery Backed RAM Modules. The following

description explains the basic operation of the board.

Assuming a board base address of D0000 Hex, each device (128K X 8) is

broken down into 16 -8K pages of data. The pages are accessed by writing an

‘actual’ bank # to D0000 -D1FFF Hex. The selected 8K page is then read

from D2000 -D3FFF Hex. Please refer to Section 5, Software Considerations

for programming examples.

The first 8K page of the first device (logical bank 0) is always accessed at

D0000 -D1FFF Hex. This page could also be accessed by writing a 0 to

D0000, and then reading locations D2000 -D3FFF Hex. The purpose of this

architecture is to provide a common driver area (for automatically booting and

initialization/driver code) and then up to 127 Bank Selected Pages of data. This

is similar to the Lotus / Intel /Microsoft (LIM) Extended Memory

Specification EMS.

If you are writing a specialized program, or driver to utilize the PROM-III, you

need to know how to switch pages. If you are running an existing application,

such as Promkit by Annabooks, you need not be concerned with the operation

of the board.

Technical Description

Sealevel Systems PROM-III Page 8

EPROM Page Format

EPROM# U1 U2 U3 U4 U5 U6 U7 U8

Address offset Page Page Page Page Page Page Page Page

00000-1FFF 00 10 20 30 40 50 60 70

2000-3FFF 01 11 21 31 41 51 61 71

4000-5FFF 02 12 22 32 42 52 62 72

6000-7FFF 03 13 23 33 43 53 63 73

8000-9FFF 04 14 24 34 44 54 64 74

A000-BFFF 05 15 25 35 45 55 65 75

C000-DFFF 06 16 26 36 46 56 66 76

E000-FFFF 07 17 27 37 47 57 67 77

10000-11FFF 08 18 28 38 48 58 68 78

12000-13FFF 09 19 29 39 49 59 69 79

14000-15FFF 0A 1A 2A 3A 4A 5A 6A 7A

16000-17FFF 0B 1B 2B 3B 4B 5B 6B 7B

18000-19FFF 0C 1C 2C 3C 4C 5C 6C 7C

1A000-1BFFF 0D 1D 2D 3D 4D 5D 6D 7D

1C000-1DFFF 0E 1E 2E 3E 4E 5E 6E 7E

1E000-1FFFF 0F 1F 2F 3F 4F 5F 6F 7F

Figure 5–EPROM Page Format Table

Software Examples

Basic Examples: Base Address = D000:0

Read and print all data within the 8K driver bank:

DEF SEG = &HD000 DEF SEG = &HD000

FOR X=0 TO &H1FFF POKE(0),&H0

PRINT PEEK(X);’ ‘; (OR) DEF SEG = &HD200

NEXT X FOR X=0 TO &H1FFF

PRINT PEEK(X);’ ‘;

NEXT X

Read and print all data within the last 8K of the first EPROM:

DEF SEG = &HD000

POKE(0),&H0F ‘SET THE BANK # TO THE LAST ONE IN THE EPROM

DEF SEG = &HD200

FOR X=0 TO &H1FFF

PRINT PEEK(X);’ ‘;

NEXT X

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