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# TANDY/RADIO SHACK
TANDY 3000
Processor 80286
Processor Speed 8MHz
Chip Set C & T
Max. onboard DRAM 1MB
Cache None
BIOS Phoenix
Dimensions 325mm x 308mm
I/O Options None
NPU Options 80287
IMG IMG 1
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | JUMPER | Position |
|------------------------------------+------------+----------|
| » | Monitor type select color | E3 & E4 | Closed |
|---+--------------------------------+------------+----------|
| | Monitor type select monochrome | E2 & E3 | Closed |
|---+--------------------------------+------------+----------|
| » | Base Memory select 512KB | E13 & E14 | Open |
|---+--------------------------------+------------+----------|
| | Base Memory select 640KB | E13 & E14 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 512KB | (18) 41256 | NONE |
|------------------+--------------------+--------------------|
| 640KB | (18) 41256 | (18) 4164 |
|------------------+--------------------+--------------------|
| 1MB | (18) 41256 | (18) 41256 |
|------------------------------------------------------------|
| Note:Bank 0 is soldered on the main board. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIOS CONFIGURATION |
|------------------------------------------------------------|
| Size | E5 - E12 |
|----------------------------+-------------------------------|
| 27128 | E5 & E9, and E7 & E11 closed |
|----------------------------+-------------------------------|
| 27256 | E6 & E10, and E8 & E12 closed |
+------------------------------------------------------------+