MONOLITHIC SYSTEMS, INC. (COLORADO MSI)
JUSTRAM/ATZ
|
Card Type |
Memory |
|
Maximum Onboard Memory |
8MB DRAM |
|
Data Bus |
16-bit ISA |
|
CONNECTIONS | |||
|
Function |
Label |
Function |
Label |
|
Daughterboard header |
CN1A |
Header to main board (on back) |
CN2B |
|
Header to main board (on back) |
CN1B |
Daughterboard header |
CN3A |
|
Daughterboard header |
CN2A |
Header to main board (on back) |
CN3B |
|
USER CONFIGURABLE SETTINGS | |||
|
Setting |
Label |
Position | |
| » |
Factory configured - do not alter |
E1 |
Unidentified |
| » |
Normal address timing |
JP5 |
Pins 1 & 2 closed |
|
20ns delay for non-compatible machines |
JP5 |
Pins 2 & 3 closed | |
| » |
Factory configured - do not alter |
JP8 |
Pins 2 & 3 closed |
| » |
Zero wait states enabled |
JP13 |
Closed |
|
Zero wait states disabled |
JP13 |
Open | |
|
DRAM | ||||
|
Setting |
Bank 0 |
P0 |
Bank 1 |
P1 |
|
2MB |
(16) 1M x 1 |
(2) 1M x 1 |
None |
None |
|
4MB |
(16) 1M x 1 |
(2) 1M x 1 |
(16) 1M x 1 |
(2) 1M x 1 |
|
6MB |
(16) 1M x 1 |
(2) 1M x 1 |
(16) 1M x 1 |
(2) 1M x 1 |
|
8MB |
(16) 1M x 1 |
(2) 1M x 1 |
(16) 1M x 1 |
(2) 1M x 1 |
|
DRAM (CON’T) | ||||
|
Setting |
Bank 2 |
P2 |
Bank 3 |
P3 |
|
2MB |
None |
None |
None |
None |
|
4MB |
None |
None |
None |
None |
|
6MB |
(16) 1M x 1 |
(2) 1M x 1 |
None |
None |
|
8MB |
(16) 1M x 1 |
(2) 1M x 1 |
(16) 1M x 1 |
(2) 1M x 1 |
|
CONVENTIONAL MEMORY | |||
|
Setting |
SW1/7 |
SW1/8 | |
| » |
All memory on board used for extended or expanded memory |
Off |
Off |
|
First 128KB on board used for conventional memory above 512KB |
On |
On | |
|
EXPANDED MEMORY BASE I/O ADDRESSES | ||||
|
Main Board |
Daughter Board |
SW1/1 |
SW1/2 |
SW1/3 |
|
208h |
218h |
On |
On |
On |
|
228h |
238h |
On |
On |
Off |
|
248h |
258h |
On |
Off |
On |
|
268h |
278h |
On |
Off |
Off |
|
288h |
298h |
Off |
On |
On |
|
2A8h |
2B8h |
Off |
On |
Off |
|
2C8h |
2D8h |
Off |
Off |
On |
|
2E8h |
2F8h |
Off |
Off |
Off |
|
EXTENDED MEMORY SIZE | ||
|
Setting |
SW1/5 |
SW1/6 |
|
0MB |
N/A |
N/A |
|
2MB |
On |
On |
|
4MB |
On |
Off |
|
6MB |
Off |
Off |
|
8MB |
Off |
Off |
|
EXTENDED MEMORY STARTING ADDRESS | ||||||||
|
Setting |
SW2/1 |
SW2/2 |
SW2/3 |
SW2/4 |
SW2/5 |
SW2/6 |
SW2/7 |
SW2/8 |
|
1024KB |
On |
On |
On |
Off |
On |
On |
On |
On |
|
1152KB |
On |
On |
On |
Off |
On |
On |
Off |
On |
|
1280KB |
On |
On |
On |
Off |
On |
Off |
On |
On |
|
1408KB |
On |
On |
On |
Off |
On |
Off |
Off |
On |
|
1536KB |
On |
On |
On |
Off |
Off |
On |
On |
On |
|
15744KB |
Off |
Off |
Off |
Off |
On |
Off |
Off |
On |
|
15872KB |
Off |
Off |
Off |
Off |
Off |
On |
On |
On |
|
16000KB |
Off |
Off |
Off |
Off |
Off |
On |
Off |
On |
|
16128KB |
Off |
Off |
Off |
Off |
Off |
Off |
On |
On |
|
16256KB |
Off |
Off |
Off |
Off |
Off |
Off |
Off |
On |
|
Disabled |
Off |
Off |
Off |
Off |
Off |
Off |
Off |
Off |
|
Note: A total of 112 memory address settings are available. The switches are a binary representation of the decimal memory addresses. SW2/1 is the Most Significant Bit and switch SW2/7 is the Least Significant Bit. The switches have the following decimal values: SW2/1=8192, SW2/2=4096, SW2/3=2048, SW2/4=1024, SW2/5=512, SW2/6=256, SW2/7=128. Turn off the switches and add the values of the switches that are off obtain the correct starting memory address. (Off=1, On=0). SW2/8 does not affect the address, but enables or disabled extended memory. If SW2 is set to Disabled, SW3 should also be set to Disabled. | ||||||||
|
EXTENDED MEMORY ENDING ADDRESS | ||||||||
|
Setting |
SW3/1 |
SW3/2 |
SW3/3 |
SW3/4 |
SW3/5 |
SW3/6 |
SW3/7 |
SW3/8 |
|
1152KB |
On |
On |
On |
Off |
On |
On |
On |
Off |
|
1280KB |
On |
On |
On |
Off |
On |
On |
Off |
Off |
|
1408KB |
On |
On |
On |
Off |
On |
Off |
On |
Off |
|
1536KB |
On |
On |
On |
Off |
On |
Off |
Off |
Off |
|
1664KB |
On |
On |
On |
Off |
Off |
On |
On |
Off |
|
15872KB |
Off |
Off |
Off |
Off |
On |
Off |
Off |
Off |
|
16000KB |
Off |
Off |
Off |
Off |
Off |
On |
On |
Off |
|
16128KB |
Off |
Off |
Off |
Off |
Off |
On |
Off |
Off |
|
16256KB |
Off |
Off |
Off |
Off |
Off |
Off |
On |
Off |
|
16384KB |
Off |
Off |
Off |
Off |
Off |
Off |
Off |
Off |
|
Disabled |
On |
On |
On |
On |
On |
On |
On |
On |
|
Note: A total of 112 memory address settings are available. The switches are a binary representation of the decimal memory addresses. SW3/1 is the Most Significant Bit and switch SW3/7 is the Least Significant Bit. The switches have the following decimal values: SW3/1=8192, SW3/2=4096, SW3/3=2048, SW3/4=1024, SW3/5=512, SW3/6=256, SW3/7=128. Turn off the switches and add the values of the switches that are off to 128KB obtain the correct starting memory address. (Off=1, On=0). SW3/8 does not affect the address, but enables or disabled extended memory. If SW3 is set to Disabled, SW2 should also be set to Disabled. | ||||||||
|
MISCELLANEOUS TECHNICAL NOTE |
|
The board may be configured for any combination of conventional, expanded, and extended memory. When conventional memory is enabled, be sure to subtract 128KB from the remaining memory. When configured for both extended and expanded memory, the memory on the main board will act as the extended memory, and the memory on the daughter board will be the expanded memory. |