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. |