MONOLITHIC SYSTEMS, INC. (COLORADO MSI)
JUSTRAM/AT16
|
Card Type |
Memory |
|
Maximum Onboard Memory |
16MB DRAM |
|
Data Bus |
16-bit ISA |
|
USER CONFIGURABLE SETTINGS | |||
|
Setting |
Label |
Position | |
| » |
Normal address timing |
E3 |
Pins 2 & 3 closed |
|
20ns delay for non-compatible machines |
E3 |
Pins 1 & 2 closed | |
| » |
All memory on board used for extended or expanded memory |
SW3/4 |
Off |
|
First 128KB on board used for conventional memory above 512KB |
SW3/4 |
On | |
| » |
Zero wait states enabled |
SW3/5 |
On |
|
Zero wait states disabled |
SW3/5 |
Off | |
|
DRAM | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
512KB |
(2) 256K x 9 |
None |
None |
None |
|
1MB |
(2) 256K x 9 |
(2) 256K x 9 |
None |
None |
|
1.5MB |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
None |
|
2MB |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
|
2MB |
(2) 1M x 9 |
None |
None |
None |
|
2.5MB |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
|
3MB |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
|
3.5MB |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
|
4MB |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
|
4MB |
(2) 1M x 9 |
(2) 1M x 9 |
None |
None |
|
6MB |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
None |
|
8MB |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
|
10MB |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
|
12MB |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
|
14MB |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
|
16MB |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
|
DRAM (CON’T) | ||||
|
Size |
Bank 4 |
Bank 5 |
Bank 6 |
Bank 7 |
|
512KB |
None |
None |
None |
None |
|
1MB |
None |
None |
None |
None |
|
1.5MB |
None |
None |
None |
None |
|
2MB |
None |
None |
None |
None |
|
2MB |
None |
None |
None |
None |
|
2.5MB |
(2) 256K x 9 |
None |
None |
None |
|
3MB |
(2) 256K x 9 |
(2) 256K x 9 |
None |
None |
|
3.5MB |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
None |
|
4MB |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
|
4MB |
None |
None |
None |
None |
|
6MB |
None |
None |
None |
None |
|
8MB |
None |
None |
None |
None |
|
10MB |
(2) 1M x 9 |
None |
None |
None |
|
12MB |
(2) 1M x 9 |
(2) 1M x 9 |
None |
None |
|
14MB |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
None |
|
16MB |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
|
DRAM JUMPERS | |
|
Setting |
E1 |
|
256K x 9 SIPs used |
Open |
|
1M x 9 SIPs used |
Closed |
|
EXPANDED MEMORY BASE I/O ADDRESSES | |||
|
Setting |
SW4/1 |
SW4/2 |
SW4/3 |
|
208h |
On |
On |
Off |
|
248h |
On |
Off |
Off |
|
288h |
Off |
On |
Off |
|
2C8h |
Off |
Off |
Off |
|
Disabled |
N/A |
N/A |
On |
|
EXTENDED MEMORY SIZE | ||||
|
256KB SIP Size |
1MB SIP Size |
SW3/1 |
SW3/2 |
SW3/3 |
|
512KB |
2MB |
On |
On |
On |
|
1MB |
4MB |
On |
On |
Off |
|
1.5MB |
6MB |
On |
Off |
On |
|
2MB |
8MB |
On |
Off |
Off |
|
2.5MB |
10MB |
Off |
On |
On |
|
3MB |
12MB |
Off |
On |
Off |
|
3.5MB |
14MB |
Off |
Off |
On |
|
4MB |
16MB |
Off |
Off |
Off |
|
EXTENDED MEMORY STARTING ADDRESS | |||||||
|
Setting |
SW2/1 |
SW2/2 |
SW2/3 |
SW2/4 |
SW2/5 |
SW2/6 |
SW2/7 |
|
1024KB |
On |
On |
On |
Off |
On |
On |
On |
|
1152KB |
On |
On |
On |
Off |
On |
On |
Off |
|
1280KB |
On |
On |
On |
Off |
On |
Off |
On |
|
1408KB |
On |
On |
On |
Off |
On |
Off |
Off |
|
1536KB |
On |
On |
On |
Off |
Off |
On |
On |
|
15744KB |
Off |
Off |
Off |
Off |
On |
Off |
Off |
|
15872KB |
Off |
Off |
Off |
Off |
Off |
On |
On |
|
16000KB |
Off |
Off |
Off |
Off |
Off |
On |
Off |
|
16128KB |
Off |
Off |
Off |
Off |
Off |
Off |
On |
|
16256KB |
Off |
Off |
Off |
Off |
Off |
Off |
Off |
|
Disabled |
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) If SW2 is set to Disabled, SW1 should also be set to Disabled. | |||||||
|
EXTENDED MEMORY ENDING ADDRESS | |||||||
|
Setting |
SW1/1 |
SW1/2 |
SW1/3 |
SW1/4 |
SW1/5 |
SW1/6 |
SW1/7 |
|
1152KB |
On |
On |
On |
Off |
On |
On |
On |
|
1280KB |
On |
On |
On |
Off |
On |
On |
Off |
|
1408KB |
On |
On |
On |
Off |
On |
Off |
On |
|
1536KB |
On |
On |
On |
Off |
On |
Off |
Off |
|
1664KB |
On |
On |
On |
Off |
Off |
On |
On |
|
15872KB |
Off |
Off |
Off |
Off |
On |
Off |
Off |
|
16000KB |
Off |
Off |
Off |
Off |
Off |
On |
On |
|
16128KB |
Off |
Off |
Off |
Off |
Off |
On |
Off |
|
16256KB |
Off |
Off |
Off |
Off |
Off |
Off |
On |
|
16384KB |
Off |
Off |
Off |
Off |
Off |
Off |
Off |
|
Disabled |
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. SW1/1 is the Most Significant Bit and switch SW1/7 is the Least Significant Bit. The switches have the following decimal values: SW1/1=8192, SW1/2=4096, SW1/3=2048, SW1/4=1024, SW1/5=512, SW1/6=256, SW1/7=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) If SW1 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, be sure that the amount of extended memory is a multiple of 4MB. |