CSS LABORATORIES, INC.
PREFERRED TR SYSTEMS, MAXPRO MT TR SYSTEMS, PRORACK TR SYSTEMS, MB-5864
Processor | Pentium |
Processor Speed | 75/90/100/120/133/150/166MHz |
Chip Set | Unidentified |
Max. Onboard DRAM | 128MB |
Cache | 256/512KB |
BIOS | Unidentified |
Dimensions | 330mm x 218mm |
I/O Options | 32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2), cache slot |
NPU Options | None |

CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Floppy drive interface | J4 | Turbo LED | J99 pins 3 & 4 |
Power LED & keylock | J32 | IDE interface LED | J100 |
PCI IDE interface LED | J34 | Front panel connector | J101 |
Speaker | J39 | External battery | J106 |
IDE interface 1 | J70 | IR connector | J107 |
IDE interface 2 | J71 | Green PC connector (monitor) | MON |
PS/2 mouse interface | J86 | 32-bit PCI slots | PC1 - PC4 |
Serial port 2 | J96 | Internal temperature sensor | SEN1 |
Serial port 1 | J97 | Internal temperature sensor | SEN2 |
Parallel port | J98 | Cache slot | SL1 |
Reset switch | J99 pins 1 & 2 | ||
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Pipeline enabled | JP16 | Closed |
Pipeline disabled | JP16 | Open | |
» | CMOS memory normal operation | JP20 | Open |
CMOS memory clear | JP20 | Closed | |
» | Password normal operation | JP21 | Open |
Password clear | JP21 | Closed | |
» | Factory configured - do not alter | JP22 | N/A |
» | Factory configured - do not alter | JP27 | N/A |
DRAM CONFIGURATION | ||
Size | Bank 0 | Bank 1 |
8MB | (2) 1M x 32 | NONE |
8MB | (2) 512K x 32 | (2) 512K x 32 |
10MB | (2) 1M x 32 | (2) 256K x 32 |
10MB | (2) 256K x 32 | (2) 1M x 32 |
12MB | (2) 1M x 32 | (2) 512K x 32 |
12MB | (2) 512K x 32 | (2) 1M x 32 |
16MB | (2) 2M x 32 | NONE |
16MB | (2) 1M x 32 | (2) 1M x 32 |
18MB | (2) 2M x 32 | (2) 256K x 32 |
18MB | (2) 256K x 32 | (2) 2M x 32 |
20MB | (2) 2M x 32 | (2) 512K x 32 |
DRAM CONFIGURATION (CON’T) | ||
Size | Bank 0 | Bank 1 |
20MB | (2) 512K x 32 | (2) 2M x 32 |
24MB | (2) 2M x 32 | (2) 1M x 32 |
24MB | (2) 1M x 32 | (2) 2M x 32 |
32MB | (2) 4M x 32 | NONE |
32MB | (2) 2M x 32 | (2) 2M x 32 |
34MB | (2) 4M x 32 | (2) 256K x 32 |
34MB | (2) 256K x 32 | (2) 4M x 32 |
36MB | (2) 4M x 32 | (2) 512K x 32 |
36MB | (2) 512K x 32 | (2) 4M x 32 |
40MB | (2) 4M x 32 | (2) 1M x 32 |
40MB | (2) 1M x 32 | (2) 4M x 32 |
48MB | (2) 4M x 32 | (2) 2M x 32 |
48MB | (2) 2M x 32 | (2) 4M x 32 |
64MB | (2) 8M x 32 | NONE |
64MB | (2) 4M x 32 | (2) 4M x 32 |
66MB | (2) 8M x 32 | (2) 256K x 32 |
66MB | (2) 256K x 32 | (2) 8M x 32 |
68MB | (2) 8M x 32 | (2) 512K x 32 |
68MB | (2) 512K x 32 | (2) 8M x 32 |
72MB | (2) 8M x 32 | (2) 1M x 32 |
72MB | (2) 1M x 32 | (2) 8M x 32 |
80MB | (2) 8M x 32 | (2) 2M x 32 |
80MB | (2) 2M x 32 | (2) 8M x 32 |
96MB | (2) 8M x 32 | (2) 4M x 32 |
96MB | (2) 4M x 32 | (2) 8M x 32 |
128MB | (2) 8M x 32 | (2) 8M x 32 |
CACHE CONFIGURATION | |
Size | SL1 |
256KB | Installed |
512KB | Installed |
CACHE JUMPER CONFIGURATION | ||
Size | JP12 | JP13 |
None | pins 2 & 3 closed | pins 2 & 3 closed |
256KB | pins 2 & 3 closed | pins 1 & 2 closed |
512KB | pins 1 & 2 closed | pins 2 & 3 closed |
CACHE JUMPER CONFIGURATION | ||
Type | JP10 | JP11 |
Asynchronous | pins 2 & 3 closed | pins 1 & 2 closed |
Burst | pins 1 & 2 closed | pins 2 & 3 closed |
Pipeline burst | pins 2 & 3 closed | pins 2 & 3 closed |
CPU SPEED CONFIGURATION | |||||
Speed | JP1 | JP2 | JP15 | JP28 | JP108 |
75MHz | 2 & 3 | 2 & 3 | Open | 1 & 2 | 1 & 2 |
90MHz | 1 & 2 | 2 & 3 | Open | 1 & 2 | 2 & 3 |
100MHz | 2 & 3 | 1 & 2 | Open | 1 & 2 | 2 & 3 |
120MHz | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 |
133MHz | 2 & 3 | 1 & 2 | 2 & 3 | 1 & 2 | 2 & 3 |
150MHz | 1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
166MHz | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 |
Note: Pins designated should be in the closed position. | |||||
BIOS CONFIGURATION | |||
Setting | JP17 | JP18 | JP19 |
EPROM | pins 1 & 2 closed | pins 1 & 2 closed | pins 2 & 3 closed |
Flash normal | pins 1 & 2 closed | pins 1 & 2 closed | pins 1 & 2 closed |
Flash programming | pins 1 & 2 closed | pins 2 & 3 closed | pins 1 & 2 closed |
FLASH BIOS CONFIGURATION | ||
Setting | JP14 | JP26 |
Green PC enabled | Open | Open |
Green PC disabled | Closed | Closed |
Note: JP14 may not be present on all boards. | ||