TANDY/RADIO SHACK
MEMORY EXPANSION ADAPTER (250-4027)
|
Card Type |
Memory |
|
Maximum Onboard Memory |
8MB DRAM |
|
Data Bus |
Tandy 3000NL memory expansion bus |
|
USER CONFIGURABLE SETTINGS | |||
|
Setting |
Label |
Position | |
|
Computer has one memory expansion slot |
E1 |
Pins 2 & 3 closed | |
|
Computer has two memory expansion slots |
E1 |
Pins 1 & 2 closed | |
|
Note:E1 may not be present on all versions of this card. | |||
|
DRAM CONFIGURATION | ||||
|
Setting |
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) 1M x 9 |
None |
None |
|
3MB |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 1M x 9 |
None |
|
3.5MB |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 1M x 9 |
|
4MB |
(2) 1M x 9 |
(2) 1M x 9 |
None |
None |
|
4.5MB |
(2) 256K x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
None |
|
5MB |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
|
6MB |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
None |
|
6.5MB |
(2) 256K x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
|
8MB |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
|
Note:The memory installed on the mainboard must be removed in order to use this card. Within each bank, the SIMMs must be the same size. Banks may contain either 256K or 1M SIMMs. | ||||