2500 RSX (2500-1620/1621) Motherboard Settings and Configuration
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 |
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