IBM CORPORATION
PC SERVER 300 (TYPE 8640) OPO, 1P0, OPT, 1PT
| 
 Processor  | 
 Pentium  | 
| 
 Processor Speed  | 
 60MHz  | 
| 
 Chip Set  | 
 Unidentified  | 
| 
 Video Chip Set  | 
 None  | 
| 
 Maximum Onboard Memory  | 
 192MB  | 
| 
 Maximum Video Memory  | 
 None  | 
| 
 Cache  | 
 256/512KB  | 
| 
 BIOS  | 
 Unidentified  | 
| 
 Dimensions  | 
 355mm x 304mm  | 
| 
 I/O Options  | 
 32-bit PCI slots (3), floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2)  | 
| 
 NPU Options  | 
 None  | 
| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 Speaker  | 
 J11  | 
 IDE interface  | 
 J22  | 
| 
 PS/2 mouse port  | 
 J15  | 
 Auxiliary power  | 
 P3  | 
| 
 Parallel port  | 
 J18  | 
 Power LED  | 
 W9  | 
| 
 Floppy drive interface  | 
 J19  | 
 IDE interface LED  | 
 W10  | 
| 
 Serial port 1  | 
 J20  | 
 32-bit PCI slots  | 
 PC1 – PC3  | 
| 
 Serial port 2  | 
 J21  | ||
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Label  | 
 Position  | |
| 
 »  | 
 Parity check enabled  | 
 J1  | 
 Closed  | 
| 
 Parity check disabled  | 
 J1  | 
 Open  | |
| 
 »  | 
 Cache type select write back  | 
 J2  | 
 Open  | 
| 
 Cache type select write through  | 
 J2  | 
 Closed  | |
| 
 »  | 
 Oscillator for U15  | 
 J6  | 
 Pins 1 & 2 closed  | 
| 
 Clock synthesizer  | 
 J6  | 
 Pins 2 & 3 closed  | |
| 
 »  | 
 BIOS normal operation  | 
 W2  | 
 Pins 2 & 3 closed  | 
| 
 BIOS recovery mode  | 
 W2  | 
 Pins 1 & 2 closed  | |
| 
 »  | 
 PS/2 mouse enabled  | 
 W6  | 
 Closed  | 
| 
 PS/2 mouse disabled  | 
 W6  | 
 Open  | |
| 
 »  | 
 Factory configured - do not alter  | 
 W20  | 
 Pins 2 & 3 closed  | 
| 
 SIMM CONFIGURATION  | |||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
 Bank 2  | 
| 
 8MB  | 
 (2) 1M x 36  | 
 None  | 
 None  | 
| 
 16MB  | 
 (2) 1M x 36  | 
 (2) 1M x 36  | 
 None  | 
| 
 16MB  | 
 (2) 2M x 36  | 
 None  | 
 None  | 
| 
 24MB  | 
 (2) 1M x 36  | 
 (2) 1M x 36  | 
 (2) 1M x 36  | 
| 
 32MB  | 
 (2) 2M x 36  | 
 (2) 2M x 36  | 
 None  | 
| 
 32MB  | 
 (2) 4M x 36  | 
 None  | 
 None  | 
| 
 48MB  | 
 (2) 2M x 36  | 
 (2) 2M x 36  | 
 (2) 2M x 36  | 
| 
 64MB  | 
 (2) 4M x 36  | 
 (2) 4M x 36  | 
 None  | 
| 
 64MB  | 
 (2) 8M x 36  | 
 None  | 
 None  | 
| 
 96MB  | 
 (2) 4M x 36  | 
 (2) 4M x 36  | 
 (2) 4M x 36  | 
| 
 128MB  | 
 (2) 8M x 36  | 
 (2) 8M x 36  | 
 None  | 
| 
 128MB  | 
 (2) 16M x 36  | 
 None  | 
 None  | 
| 
 192MB  | 
 (2) 8M x 36  | 
 (2) 8M x 36  | 
 (2) 8M x 36  | 
| 
 CACHE CONFIGURATION  | 
| 
 Note: The location of the cache is unidentified.  | 
| 
 CACHE JUMPER CONFIGURATION  | |||
| 
 Size  | 
 J3  | 
 J4  | 
 J35  | 
| 
 None  | 
 Pins 1 & 2 closed  | 
 Pins 1 & 2 closed  | 
 Open  | 
| 
 256KB  | 
 Pins 2 & 3 closed  | 
 Pins 1 & 2 closed  | 
 Pins 1 & 2 closed  | 
| 
 512KB  | 
 Pins 2 & 3 closed  | 
 Pins 2 & 3 closed  | 
 Pins 2 & 3 closed  | 
| 
 CPU CLOCK SPEED SELECTION  | |
| 
 Speed  | 
 J5  | 
| 
 50MHz  | 
 Closed  | 
| 
 66MHz  | 
 Open  | 
| 
 CPU VOLTAGE SELECTION  | |||
| 
 Voltage  | 
 J40  | 
 J41  | 
 J42  | 
| 
 5v  | 
 Closed  | 
 N/A  | 
 N/A  | 
| 
 5.3v  | 
 Power module installed  | 
 Power module installed  | 
 Power module installed  | 
| 
 Note: All pins on J40 must be closed.  | |||
| 
 DMA CHANNEL SELECTION  | ||
| 
 Channel  | 
 W14  | 
 W16  | 
| 
 6  | 
 Pins 1 & 2 closed  | 
 Pins 1 & 2 closed  | 
| 
 7  | 
 Pins 2 & 3 closed  | 
 Pins 2 & 3 closed  |