TANDY/RADIO SHACK
2500 RSX (2500-1620/1621)
|
Processor |
80386SX |
|
Processor Speed |
25MHz |
|
Chip Set |
Unidentified |
|
Video Chip Set |
Accumos |
|
Maximum Onboard Memory |
9MB |
|
Maximum Video Memory |
512KB |
|
Cache |
None |
|
BIOS |
Unidentified |
|
Dimensions |
220mm x 220mm |
|
I/O Options |
Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial port, VGA port, riser slot |
|
NPU Options |
80387SX |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
VGA port |
CN1 |
Volume control |
CN5 |
|
PS/2 mouse port |
CN2 |
IDE interface |
CN6 |
|
Parallel port |
CN3 |
Floppy drive interface |
CN7 |
|
Serial port |
CN4 |
Riser slot |
SL1 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
|
Factory configured - do not alter |
E1 |
Open |
|
|
On board video enabled |
J1 |
Pins 1 & 2 closed |
|
On board video disabled |
J1 |
Pins 2 & 3 closed | |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0/1 |
Bank 2 |
|
1MB |
1MB |
None |
|
3MB |
1MB |
(2) 1M x 9 |
|
9MB |
1MB |
(2) 4M x 9 |
|
Note: Bank 0/1 is factory installed and is not configurable. The location is unidentified. | ||
|
VIDEO MEMORY CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
256KB |
256KB |
None |
|
512KB |
256KB |
256KB |
|
Note: The location of banks 0 & 1 are unidentified. The size of the video memory chips are unidentified. | ||
|
HARD DRIVE SELECTION | ||
|
Setting |
C/D |
C/D+DSP |
|
1 drive installed |
Closed |
N/A |
|
2 drives installed (primary) |
N/A |
Closed |
|
2 drives installed (secondary) |
N/A |
Open |