...because we can't all be on the bleeding edge...





JE1081

JAMECO ELECTRONIC COMPONENTS

JE1081

Card Type

Memory card

Maximum Onboard Memory

2MB DRAM

Data Bus

16-bit ISA

Card Size

Full-length, full-height card

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

Parity checking enabled

SW1/8

On

 

Parity checking disabled

SW1/8

Off

Factory configured - do not alter

SW2/7

Unidentified

Factory configured - do not alter

SW2/8

Unidentified

 

Speed 6MHz/8MHz

JP1

Pins 1 & 2 closed

 

Speed 10MHz/12Mhz

JP1

Pins 2 & 3 closed

KILOBYTES STARTING ADDRESS SELECTION

Address

SW1/1

SW1/2

SW1/3

0KB

Off

Off

Off

125KB

On

Off

Off

256KB

Off

On

Off

384KB

On

On

Off

512KB

Off

Off

On

640KB

On

Off

On

768KB

Off

On

On

896KB

On

On

On

MEGEBYTES STARTING ADDRESS SELECTION

Address

SW1/4

SW1/5

SW1/6

SW1/7

0MB

Off

Off

Off

Off

1MB

On

Off

Off

Off

2MB

Off

On

Off

Off

3MB

On

On

Off

Off

4MB

Off

Off

On

Off

5MB

On

Off

On

Off

6MB

Off

On

On

Off

7MB

On

On

On

Off

8MB

Off

Off

Off

On

9MB

On

Off

Off

On

10MB

Off

On

Off

On

11MB

On

On

Off

On

12MB

Off

Off

On

On

13MB

On

Off

On

On

14MB

Off

On

On

On

15MB

On

On

On

On

BASE/EXTENDED MEMORY SELECTION

Total

Base/extended

Possible expanded

SW2/5

SW2/6

0.5Mb

0.5Mb

0.0Mb

Off

Off

1.0Mb

0.5Mb

0.5Mb

Off

Off

1.5Mb

0.5Mb

1.0Mb

Off

Off

2.0Mb

0.5Mb

1.5Mb

Off

Off

1.0Mb

1.0Mb

0.0Mb

Off

On

1.5Mb

1.0Mb

0.5Mb

Off

On

2.0Mb

1.0Mb

1.0Mb

Off

On

1.5Mb

1.5Mb

0.0Mb

On

Off

2.0Mb

1.5Mb

0.5Mb

On

Off

2.0Mb

2.0Mb

0.0Mb

On

On

EXPANDED MEMORY I/O PORT ADDRESS

Address

SW2/1

SW2/2

SW2/3

SW2/4

208h

On

On

On

On

218h

Off

On

On

On

258h

Off

On

Off

On

268h

On

Off

Off

On

2A8h

On

Off

On

Off

2B8h

Off

Off

On

Off

MISCELLANEOUS TECHNICAL NOTES

If extended memory is already in the system, the starting address of the JE1081 is figured by adding 1024 to the amount of the extended memory. Divide the starting address by 1024 to get the total Megabytes. The result will be used to figure the settings for S1/4 - S1/7. The remainder is used to select the settings of S1/1 - S1/3.