AT & T, INC.
AT & T, INC. GLOBALYST 550
AT & T, INC. GLOBALYST 575
Processor | SL80486SX/SL80486SX2/SL80486DX2/SL80486DX4/P24C/ 486Overdrive |
Processor Speed | 33/50(internal)/66(internal)100(internal)MHz |
Chip Set | Unidentified |
Video Chip Set | S3 |
Maximum Onboard Memory | 128MB |
Maximum Video Memory | 2MB |
Cache | 256KB |
BIOS | IBM |
Dimensions | 330mm x 218mm |
I/O Options | Floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), VGA port, riser slot, cache slot |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
PS/2 mouse port | CN2 | IDE interface 1 | CN9 |
Serial port | CN3 | Front panel security switch | JSEC |
Serial port | CN4 | Speaker | JSPR |
Parallel port | CN5 | Front panel LEDs | LED |
VGA port | CN6 | Riser slot | SL1 |
Floppy drive interface | CN7 | Cache slot | SL2 |
IDE interface 2 | CN8 |
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USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
| Jumper information unavailable | CN1 | Unidentified |
| Monitor type select color | SW1/2 | Off |
| Monitor type select monochrome | SW1/2 | On |
Note: If a VGA processor is enabled, SW1/2 has no function. If the VGA controller is disabled, and a CGA or MDA controller is installed, set the switch to the above setting. |
DRAM CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
4MB | (1) 1M x 36 | None | None | None |
8MB | (1) 1M x 36 | (1) 1M x 36 | None | None |
8MB | (1) 2M x 36 | None | None | None |
12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 | None |
12MB | (1) 1M x 36 | (1) 2M x 36 | None | None |
16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 |
16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 2M x 36 | None |
16MB | (1) 2M x 36 | (1) 2M x 36 | None | None |
16MB | (1) 4M x 36 | None | None | None |
20MB | (1) 1M x 36 | (1) 4M x 36 | None | None |
20MB | (1) 1M x 36 | (1) 2M x 36 | (1) 2M x 36 | None |
24MB | (1) 1M x 36 | (1) 1M x 36 | (1) 2M x 36 | (1) 2M x 36 |
24MB | (1) 2M x 36 | (1) 2M x 36 | (1) 2M x 36 | None |
24MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x 36 | None |
28MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x 36 | (1) 1M x 36 |
28MB | (1) 1M x 36 | (1) 2M x 36 | (1) 2M x 36 | (1) 2M x 36 |
32MB | (1) 2M x 36 | (1) 2M x 36 | (1) 4M x 36 | None |
32MB | (1) 2M x 36 | (1) 2M x 36 | (1) 2M x 36 | (1) 2M x 36 |
Note: The location of banks 0, 1, 2, & 3 are unidentified. This table is for the Globalyst 550 system and early revisions of Globalyst 575 systems. |
DRAM CONFIGURATION (CON'T) | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
32MB | (1) 4M x 36 | (1) 4M x 36 | None | None |
36MB | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x 36 | None |
40MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x 36 |
48MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 | None |
52MB | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 |
64MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 |
Note: The location of banks 0, 1, 2, & 3 are unidentified. This table is for the Globalyst 550 system and early revisions of Globalyst 575 systems. |
DRAM CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
4MB | (1) 1M x 36 | None | None | None |
8MB | (1) 1M x 36 | (1) 1M x 36 | None | None |
8MB | (1) 2M x 36 | None | None | None |
12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 | None |
12MB | (1) 1M x 36 | (1) 2M x 36 | None | None |
16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 |
16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 2M x 36 | None |
16MB | (1) 2M x 36 | (1) 2M x 36 | None | None |
16MB | (1) 4M x 36 | None | None | None |
20MB | (1) 1M x 36 | (1) 4M x 36 | None | None |
20MB | (1) 1M x 36 | (1) 2M x 36 | (1) 2M x 36 | None |
24MB | (1) 1M x 36 | (1) 1M x 36 | (1) 2M x 36 | (1) 2M x 36 |
24MB | (1) 2M x 36 | (1) 2M x 36 | (1) 2M x 36 | None |
24MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x 36 | None |
28MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x 36 | (1) 1M x 36 |
28MB | (1) 1M x 36 | (1) 2M x 36 | (1) 2M x 36 | (1) 2M x 36 |
32MB | (1) 2M x 36 | (1) 2M x 36 | (1) 4M x 36 | None |
32MB | (1) 2M x 36 | (1) 2M x 36 | (1) 2M x 36 | (1) 2M x 36 |
32MB | (1) 4M x 36 | (1) 4M x 36 | None | None |
32MB | (1) 8M x 36 | None | None | None |
36MB | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x 36 | None |
36MB | (1) 1M x 36 | (1) 8M x 36 | None | None |
40MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x 36 |
48MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 | None |
48MB | (1) 4M x 36 | (1) 8M x 36 | None | None |
52MB | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 |
64MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 |
64MB | (1) 8M x 36 | (1) 8M x 36 | None | None |
68MB | (1) 1M x 36 | (1) 8M x 36 | (1) 8M x 36 | None |
Note: The location of banks 0, 1, 2, & 3 are unidentified. This table is for the Globalyst 575 system revisions released after the end of 1994.. |
DRAM CONFIGURATION (CON'T) | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
80MB | (1) 4M x 36 | (1) 8M x 36 | (1) 8M x 36 | None |
96MB | (1) 8M x 36 | (1) 8M x 36 | (1) 8M x 36 | None |
100MB | (1) 1M x 36 | (1) 8M x 36 | (1) 8M x 36 | (1) 8M x 36 |
112MB | (1) 4M x 36 | (1) 8M x 36 | (1) 8M x 36 | (1) 8M x 36 |
128MB | (1) 8M x 36 | (1) 8M x 36 | (1) 8M x 36 | (1) 8M x 36 |
Note: The location of banks 0, 1, 2, & 3 are unidentified. This table is for the Globalyst 575 system revisions released after the end of 1994.. |
CACHE CONFIGURATION | |
Size | SL2 |
None | Not installed |
256KB | 256KB module installed |
VIDEO MEMORY CONFIGURATION | ||
Size | Bank 0 | Bank 1 |
1MB | 1MB | None |
2MB | 1MB | 1MB |
Note: Bank 0 is factory installed and is not configurable. The size of the upgrade ships are unidentified. |
CPU SPEED SELECTION | |
Speed | SW1/1 |
33MHz | Off |
50iMHz | On |
66iMHz | Off |
100iMHz | Off |
CPU TYPE SELECTION | |
Type | J53V |
1 | Pins 1 & 2 closed |
2 | Pins 5 & 6 closed |
Note: This jumper set the 3.3v for the P24C CPU. Type 1 & 2 are unidentified. |