TMC RESEARCH CORPORATION
PET48PM
| 
 Processor  | 
 80486SX/80487SX/80486DX/80486DX2/SL Pentium Overdrive/Pentium Overdrive  | 
| 
 Processor Speed  | 
 25/33/40/50(internal)/66(internal)MHz  | 
| 
 Chip Set  | 
 OPTI  | 
| 
 Max. Onboard DRAM  | 
 256MB  | 
| 
 Cache  | 
 128/256KB  | 
| 
 BIOS  | 
 Unidentified  | 
| 
 Dimensions  | 
 330mm x 254mm  | 
| 
 I/O Options  | 
 32-bit VESA local bus slots (3)  | 
| 
 NPU Options  | 
 None  | 

| 
 CONNECTIONS  | 
|||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 External battery  | 
 J2  | 
 Reset switch  | 
 J7 pins 9 & 19  | 
| 
 Hard drive LED from controller  | 
 J3  | 
 Hard drive LED to case  | 
 J7 pins 10 & 20  | 
| 
 Speaker  | 
 J7 pins 1 - 4  | 
 Power LED & keylock  | 
 J7 pins 11 - 15  | 
| 
 Turbo switch  | 
 J7 pins 7 & 17  | 
 32-bit VESA local bus slots  | 
 SL1 - SL3  | 
| 
 Turbo LED  | 
 J7 pins 8 & 18  | 
 
  | 
 
  | 
| 
 USER CONFIGURABLE SETTINGS  | 
|||
| 
 Function  | 
 Jumper  | 
 Position  | 
|
| 
 »  | 
 CMOS memory normal operation  | 
 JP1 pins 1 & 2  | 
 Open  | 
| 
 
  | 
 CMOS memory clear  | 
 JP1 pins 1 & 2  | 
 Closed  | 
| 
 »  | 
 Battery type select internal  | 
 JP1 pins 2 & 3  | 
 Closed  | 
| 
 
  | 
 Battery type select external  | 
 JP1 pins 2 & 3  | 
 Open  | 
| 
 »  | 
 Monitor type select color  | 
 JP2  | 
 Closed  | 
| 
 
  | 
 Monitor type select monochrome  | 
 JP2  | 
 Open  | 
| 
 »  | 
 ADS delay disabled (CPU £ 33MHz) | 
 JP7  | 
 pins 1 & 2 closed  | 
| 
 
  | 
 ADS delay enabled (CPU >33MHz)  | 
 JP7  | 
 pins 2 & 3 closed  | 
| 
 DRAM CONFIGURATION 1  | 
||||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
 Bank 2  | 
 Bank 3  | 
| 
 4MB  | 
 (1) 1M x 36  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 8MB  | 
 (1) 2M x 36  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 12MB  | 
 (1) 2M x 36  | 
 (1) 1M x 36  | 
 NONE  | 
 NONE  | 
| 
 16MB  | 
 (1) 2M x 36  | 
 (1) 2M x 36  | 
 NONE  | 
 NONE  | 
| 
 16MB  | 
 (1) 4M x 36  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 24MB  | 
 (1) 2M x 36  | 
 (1) 4M x 36  | 
 NONE  | 
 NONE  | 
| 
 32MB  | 
 (1) 8M x 36  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 36MB  | 
 (1) 8M x 36  | 
 (1) 1M x 36  | 
 NONE  | 
 NONE  | 
| 
 40MB  | 
 (1) 2M x 36  | 
 (1) 8M x 36  | 
 NONE  | 
 NONE  | 
| 
 40MB  | 
 (1) 8M x 36  | 
 (1) 2M x 36  | 
 NONE  | 
 NONE  | 
| 
 48MB  | 
 (1) 8M x 36  | 
 (1) 4M x 36  | 
 NONE  | 
 NONE  | 
| 
 64MB  | 
 (1) 8M x 36  | 
 (1) 8M x 36  | 
 NONE  | 
 NONE  | 
| 
 64MB  | 
 (1) 16M x 36  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 72MB  | 
 (1) 2M x 36  | 
 (1) 16M x 36  | 
 NONE  | 
 NONE  | 
| 
 96MB  | 
 (1) 8M x 36  | 
 (1) 16M x 36  | 
 NONE  | 
 NONE  | 
| 
 128MB  | 
 (1) 32M x 36  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 132MB  | 
 (1) 32M x 36  | 
 (1) 1M x 36  | 
 NONE  | 
 NONE  | 
| 
 136MB  | 
 (1) 2M x 36  | 
 (1) 32M x 36  | 
 NONE  | 
 NONE  | 
| 
 136MB  | 
 (1) 32M x 36  | 
 (1) 2M x 36  | 
 NONE  | 
 NONE  | 
| 
 144MB  | 
 (1) 32M x 36  | 
 (1) 4M x 36  | 
 NONE  | 
 NONE  | 
| 
 160MB  | 
 (1) 8M x 36  | 
 (1) 32M x 36  | 
 NONE  | 
 NONE  | 
| 
 160MB  | 
 (1) 32M x 36  | 
 (1) 8M x 36  | 
 NONE  | 
 NONE  | 
| 
 192MB  | 
 (1) 32M x 36  | 
 (1) 16M x 36  | 
 NONE  | 
 NONE  | 
| 
 256MB  | 
 (1) 32M x 36  | 
 (1) 32M x 36  | 
 NONE  | 
 NONE  | 
| 
 DRAM CONFIGURATION 2  | 
||||
| 
 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  | 
| 
 12MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (4) 1M x 9  | 
 NONE  | 
| 
 DRAM CONFIGURATION 2 (CON'T)  | 
||||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
 Bank 2  | 
 Bank 3  | 
| 
 16MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (4) 1M x 9  | 
 (4) 1M x 9  | 
| 
 16MB  | 
 (1) 4M x 36  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 20MB  | 
 (1) 1M x 36  | 
 (1) 4M x 36  | 
 NONE  | 
 NONE  | 
| 
 24MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (4) 4M x 9  | 
 NONE  | 
| 
 24MB  | 
 (1) 1M x 36  | 
 (1) 4M x 36  | 
 (4) 1M x 9  | 
 NONE  | 
| 
 28MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (4) 4M x 9  | 
 (4) 1M x 9  | 
| 
 28MB  | 
 (1) 1M x 36  | 
 (1) 4M x 36  | 
 (4) 1M x 9  | 
 (4) 1M x 9  | 
| 
 32MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 NONE  | 
 NONE  | 
| 
 36MB  | 
 (1) 1M x 36  | 
 (1) 4M x 36  | 
 (4) 4M x 9  | 
 NONE  | 
| 
 36MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (4) 1M x 9  | 
 NONE  | 
| 
 40MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (4) 4M x 9  | 
 (4) 4M x 9  | 
| 
 40MB  | 
 (1) 1M x 36  | 
 (1) 4M x 36  | 
 (4) 4M x 9  | 
 (4) 1M x 9  | 
| 
 40MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (4) 1M x 9  | 
 (4) 1M x 9  | 
| 
 48MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (4) 4M x 9  | 
 NONE  | 
| 
 52MB  | 
 (1) 1M x 36  | 
 (1) 4M x 36  | 
 (4) 4M x 9  | 
 (4) 4M x 9  | 
| 
 52MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (4) 4M x 9  | 
 (4) 1M x 9  | 
| 
 64MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (4) 4M x 9  | 
 (4) 4M x 9  | 
| 
 64MB  | 
 (1) 16M x 36  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 72MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (4) 16M x 9  | 
 NONE  | 
| 
 80MB  | 
 (1) 4M x 36  | 
 (1) 16M x 36  | 
 NONE  | 
 NONE  | 
| 
 84MB  | 
 (1) 1M x 36  | 
 (1) 4M x 36  | 
 (4) 16M x 9  | 
 NONE  | 
| 
 84MB  | 
 (1) 4M x 36  | 
 (1) 16M x 36  | 
 (4) 1M x 9  | 
 NONE  | 
| 
 88MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (4) 4M x 9  | 
 (4) 16M x 9  | 
| 
 88MB  | 
 (1) 4M x 36  | 
 (1) 16M x 36  | 
 (4) 1M x 9  | 
 (4) 1M x 9  | 
| 
 96MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (4) 16M x 9  | 
 NONE  | 
| 
 96MB  | 
 (1) 4M x 36  | 
 (1) 16M x 36  | 
 (4) 4M x 9  | 
 NONE  | 
| 
 100MB  | 
 (1) 1M x 36  | 
 (1) 4M x 36  | 
 (4) 4M x 9  | 
 (4) 16M x 9  | 
| 
 100MB  | 
 (1) 4M x 36  | 
 (1) 16M x 36  | 
 (4) 4M x 9  | 
 (4) 1M x 9  | 
| 
 112MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (4) 4M x 9  | 
 (4) 16M x 9  | 
| 
 112MB  | 
 (1) 4M x 36  | 
 (1) 16M x 36  | 
 (4) 4M x 9  | 
 (4) 4M x 9  | 
| 
 128MB  | 
 (1) 16M x 36  | 
 (1) 16M x 36  | 
 NONE  | 
 NONE  | 
| 
 132MB  | 
 (1) 16M x 36  | 
 (1) 16M x 36  | 
 (4) 1M x 9  | 
 NONE  | 
| 
 136MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (4) 16M x 9  | 
 (4) 16M x 9  | 
| 
 136MB  | 
 (1) 16M x 36  | 
 (1) 16M x 36  | 
 (4) 1M x 9  | 
 (4) 1M x 9  | 
| 
 144MB  | 
 (1) 4M x 36  | 
 (1) 16M x 36  | 
 (4) 16M x 9  | 
 NONE  | 
| 
 144MB  | 
 (1) 16M x 36  | 
 (1) 16M x 36  | 
 (4) 4M x 9  | 
 NONE  | 
| 
 148MB  | 
 (1) 1M x 36  | 
 (1) 4M x 36  | 
 (4) 16M x 9  | 
 (4) 16M x 9  | 
| 
 148MB  | 
 (1) 16M x 36  | 
 (1) 16M x 36  | 
 (4) 4M x 9  | 
 (4) 1M x 9  | 
| 
 160MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (4) 16M x 9  | 
 (4) 16M x 9  | 
| 
 160MB  | 
 (1) 4M x 36  | 
 (1) 16M x 36  | 
 (4) 4M x 9  | 
 (4) 16M x 9  | 
| 
 160MB  | 
 (1) 16M x 36  | 
 (1) 16M x 36  | 
 (4) 4M x 9  | 
 (4) 4M x 9  | 
| 
 192MB  | 
 (1) 16M x 36  | 
 (1) 16M x 36  | 
 (4) 16M x 9  | 
 NONE  | 
| 
 208MB  | 
 (1) 4M x 36  | 
 (1) 16M x 36  | 
 (4) 16M x 9  | 
 (4) 16M x 9  | 
| 
 208MB  | 
 (1) 16M x 36  | 
 (1) 16M x 36  | 
 (4) 4M x 9  | 
 (4) 16M x 9  | 
| 
 256MB  | 
 (1) 16M x 36  | 
 (1) 16M x 36  | 
 (4) 16M x 9  | 
 (4) 16M x 9  | 
| 
 DRAM CONFIGURATION 3  | 
||||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
 Bank 2  | 
 Bank 3  | 
| 
 4MB  | 
 NONE  | 
 NONE  | 
 (4) 1M x 9  | 
 NONE  | 
| 
 8MB  | 
 NONE  | 
 NONE  | 
 (4) 1M x 9  | 
 (4) 1M x 9  | 
| 
 12MB  | 
 (1) 1M x 36  | 
 NONE  | 
 (4) 1M x 9  | 
 (4) 1M x 9  | 
| 
 16MB  | 
 (1) 2M x 36  | 
 NONE  | 
 (4) 1M x 9  | 
 (4) 1M x 9  | 
| 
 16MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (4) 1M x 9  | 
 (4) 1M x 9  | 
| 
 16MB  | 
 NONE  | 
 NONE  | 
 (4) 4M x 9  | 
 NONE  | 
| 
 20MB  | 
 NONE  | 
 NONE  | 
 (4) 1M x 9  | 
 (4) 4M x 9  | 
| 
 24MB  | 
 (1) 4M x 36  | 
 NONE  | 
 (4) 1M x 9  | 
 (4) 1M x 9  | 
| 
 24MB  | 
 (1) 1M x 36  | 
 NONE  | 
 (4) 1M x 9  | 
 (4) 4M x 9  | 
| 
 28MB  | 
 (1) 2M x 36  | 
 NONE  | 
 (4) 1M x 9  | 
 (4) 4M x 9  | 
| 
 28MB  | 
 (1) 4M x 36  | 
 (1) 1M x 36  | 
 (4) 1M x 9  | 
 (4) 1M x 9  | 
| 
 28MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (4) 1M x 9  | 
 (4) 4M x 9  | 
| 
 32MB  | 
 NONE  | 
 NONE  | 
 (4) 4M x 9  | 
 (4) 4M x 9  | 
| 
 36MB  | 
 (1) 4M x 36  | 
 NONE  | 
 (4) 1M x 9  | 
 (4) 4M x 9  | 
| 
 36MB  | 
 (1) 1M x 36  | 
 NONE  | 
 (4) 4M x 9  | 
 (4) 4M x 9  | 
| 
 40MB  | 
 (1) 8M x 36  | 
 NONE  | 
 (4) 1M x 9  | 
 (4) 1M x 9  | 
| 
 40MB  | 
 (1) 2M x 36  | 
 NONE  | 
 (4) 4M x 9  | 
 (4) 4M x 9  | 
| 
 40MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (4) 1M x 9  | 
 (4) 1M x 9  | 
| 
 40MB  | 
 (1) 4M x 36  | 
 (1) 1M x 36  | 
 (4) 1M x 9  | 
 (4) 4M x 9  | 
| 
 40MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (4) 4M x 9  | 
 (4) 4M x 9  | 
| 
 48MB  | 
 (1) 4M x 36  | 
 NONE  | 
 (4) 4M x 9  | 
 (4) 4M x 9  | 
| 
 52MB  | 
 (1) 8M x 36  | 
 NONE  | 
 (4) 1M x 9  | 
 (4) 4M x 9  | 
| 
 52MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (4) 1M x 9  | 
 (4) 4M x 9  | 
| 
 52MB  | 
 (1) 4M x 36  | 
 (1) 1M x 36  | 
 (4) 4M x 9  | 
 (4) 4M x 9  | 
| 
 64MB  | 
 (1) 8M x 36  | 
 NONE  | 
 (4) 4M x 9  | 
 (4) 4M x 9  | 
| 
 64MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (4) 4M x 9  | 
 (4) 4M x 9  | 
| 
 64MB  | 
 NONE  | 
 NONE  | 
 (4) 16M x 9  | 
 NONE  | 
| 
 72MB  | 
 (1) 16M x 36  | 
 NONE  | 
 (4) 1M x 9  | 
 (4) 1M x 9  | 
| 
 80MB  | 
 NONE  | 
 NONE  | 
 (4) 4M x 9  | 
 (4) 16M x 9  | 
| 
 84MB  | 
 (1) 16M x 36  | 
 NONE  | 
 (4) 1M x 9  | 
 (4) 4M x 9  | 
| 
 84MB  | 
 (1) 1M x 36  | 
 NONE  | 
 (4) 4M x 9  | 
 (4) 16M x 9  | 
| 
 88MB  | 
 (1) 2M x 36  | 
 NONE  | 
 (4) 4M x 9  | 
 (4) 16M x 9  | 
| 
 88MB  | 
 (1) 4M x 36  | 
 (1) 16M x 36  | 
 (4) 1M x 9  | 
 (4) 1M x 9  | 
| 
 88MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (4) 4M x 9  | 
 (4) 16M x 9  | 
| 
 96MB  | 
 (1) 16M x 36  | 
 NONE  | 
 (4) 4M x 9  | 
 (4) 4M x 9  | 
| 
 96MB  | 
 (1) 4M x 36  | 
 NONE  | 
 (4) 4M x 9  | 
 (4) 16M x 9  | 
| 
 100MB  | 
 (1) 4M x 36  | 
 (1) 16M x 36  | 
 (4) 1M x 9  | 
 (4) 4M x 9  | 
| 
 100MB  | 
 (1) 4M x 36  | 
 (1) 1M x 36  | 
 (4) 4M x 9  | 
 (4) 16M x 9  | 
| 
 112MB  | 
 (1) 8M x 36  | 
 NONE  | 
 (4) 4M x 9  | 
 (4) 16M x 9  | 
| 
 112MB  | 
 (1) 4M x 36  | 
 (1) 16M x 36  | 
 (4) 4M x 9  | 
 (4) 4M x 9  | 
| 
 112MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (4) 4M x 9  | 
 (4) 16M x 9  | 
| 
 128MB  | 
 NONE  | 
 NONE  | 
 (4) 16M x 9  | 
 (4) 16M x 9  | 
| 
 132MB  | 
 (1) 1M x 36  | 
 NONE  | 
 (4) 16M x 9  | 
 (4) 16M x 9  | 
| 
 DRAM CONFIGURATION 3 (CON'T)  | 
||||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
 Bank 2  | 
 Bank 3  | 
| 
 136MB  | 
 (1) 2M x 36  | 
 NONE  | 
 (4) 16M x 9  | 
 (4) 16M x 9  | 
| 
 136MB  | 
 (1) 32M x 36  | 
 NONE  | 
 (4) 1M x 9  | 
 (4) 1M x 9  | 
| 
 136MB  | 
 (1) 16M x 36  | 
 (1) 16M x 36  | 
 (4) 1M x 9  | 
 (4) 1M x 9  | 
| 
 136MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (4) 16M x 9  | 
 (4) 16M x 9  | 
| 
 144MB  | 
 (1) 16M x 36  | 
 NONE  | 
 (4) 4M x 9  | 
 (4) 16M x 9  | 
| 
 144MB  | 
 (1) 4M x 36  | 
 NONE  | 
 (4) 16M x 9  | 
 (4) 16M x 9  | 
| 
 148MB  | 
 (1) 32M x 36  | 
 NONE  | 
 (4) 1M x 9  | 
 (4) 4M x 9  | 
| 
 148MB  | 
 (1) 16M x 36  | 
 (1) 16M x 36  | 
 (4) 1M x 9  | 
 (4) 4M x 9  | 
| 
 148MB  | 
 (1) 4M x 36  | 
 (1) 1M x 36  | 
 (4) 16M x 9  | 
 (4) 16M x 9  | 
| 
 160MB  | 
 (1) 8M x 36  | 
 NONE  | 
 (4) 16M x 9  | 
 (4) 16M x 9  | 
| 
 160MB  | 
 (1) 32M x 36  | 
 NONE  | 
 (4) 4M x 9  | 
 (4) 4M x 9  | 
| 
 160MB  | 
 (1) 16M x 36  | 
 (1) 16M x 36  | 
 (4) 4M x 9  | 
 (4) 4M x 9  | 
| 
 160MB  | 
 (1) 4M x 36  | 
 (1) 16M x 36  | 
 (4) 4M x 9  | 
 (4) 16M x 9  | 
| 
 160MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (4) 16M x 9  | 
 (4) 16M x 9  | 
| 
 192MB  | 
 (1) 16M x 36  | 
 NONE  | 
 (4) 16M x 9  | 
 (4) 16M x 9  | 
| 
 208MB  | 
 (1) 32M x 36  | 
 NONE  | 
 (4) 4M x 9  | 
 (4) 16M x 9  | 
| 
 208MB  | 
 (1) 16M x 36  | 
 (1) 16M x 36  | 
 (4) 4M x 9  | 
 (4) 16M x 9  | 
| 
 208MB  | 
 (1) 4M x 36  | 
 (1) 16M x 36  | 
 (4) 16M x 9  | 
 (4) 16M x 9  | 
| 
 256MB  | 
 (1) 32M x 36  | 
 NONE  | 
 (4) 16M x 9  | 
 (4) 16M x 9  | 
| 
 256MB  | 
 (1) 16M x 36  | 
 (1) 16M x 36  | 
 (4) 16M x 9  | 
 (4) 16M x 9  | 
| 
 DRAM RESISTOR CONFIGURATION  | 
|||
| 
 Configuration  | 
 RND  | 
 RNE  | 
 RNF  | 
| 
 1  | 
 Installed  | 
 Not installed  | 
 Not installed  | 
| 
 2  | 
 Not installed  | 
 Installed  | 
 Not installed  | 
| 
 3  | 
 Not installed  | 
 Not installed  | 
 Installed  | 
| 
 CACHE CONFIGURATION  | 
|||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
 TAG  | 
| 
 128KB  | 
 (4) 32K x 8  | 
 NONE  | 
 (1) 8K x 8  | 
| 
 128KB  | 
 (4) 32K x 8  | 
 NONE  | 
 (1) 16K x 8  | 
| 
 128KB  | 
 (4) 32K x 8  | 
 NONE  | 
 (1) 32K x 8  | 
| 
 256KB  | 
 (4) 32K x 8  | 
 (4) 32K x 8  | 
 (1) 16K x 8  | 
| 
 256KB  | 
 (4) 32K x 8  | 
 (4) 32K x 8  | 
 (1) 32K x 8  | 
| 
 CACHE JUMPER CONFIGURATION  | 
||
| 
 Size  | 
 JP5  | 
 JP6  | 
| 
 128KB  | 
 pins 1 & 2 closed  | 
 pins 1 & 2 closed  | 
| 
 256KB  | 
 pins 2 & 3 closed  | 
 pins 2 & 3 closed  | 
| 
 CPU TYPE CONFIGURATION  | 
|||
| 
 Setting  | 
 RNA  | 
 RNB  | 
 RNC  | 
| 
 80486SX  | 
 Not installed  | 
 Not installed  | 
 Installed  | 
| 
 80487SX  | 
 Not installed  | 
 Installed  | 
 Not installed  | 
| 
 80486DX  | 
 Installed  | 
 Not installed  | 
 Not installed  | 
| 
 80486DX2  | 
 Installed  | 
 Not installed  | 
 Not installed  | 
| 
 SL Pentium Overdrive  | 
 Not installed  | 
 Installed  | 
 Not installed  | 
| 
 Pentium Overdrive  | 
 Not installed  | 
 Installed  | 
 Not installed  | 
| 
 CPU SPEED CONFIGURATION  | 
|||
| 
 Speed  | 
 RNG1  | 
 RNG2  | 
 RNG3  | 
| 
 25MHz  | 
 Installed  | 
 Not installed  | 
 Not installed  | 
| 
 33MHz  | 
 Not installed  | 
 Installed  | 
 Not installed  | 
| 
 40MHz  | 
 Not installed  | 
 Not installed  | 
 Installed  | 
| 
 50iMHz  | 
 Installed  | 
 Not installed  | 
 Not installed  | 
| 
 66iMHz  | 
 Not installed  | 
 Installed  | 
 Not installed  | 
| 
 VESA WAIT STATE CONFIGURATION  | 
||
| 
 Speed  | 
 RNG3  | 
|
| 
 »  | 
 VESA wait state select 1 wait states  | 
 Closed  | 
| 
 
  | 
 VESA wait state select 0 wait state  | 
 Open  | 
| 
 VESA LOCAL BUS SPEED CONFIGURATION  | 
||
| 
 Speed  | 
 RNG3  | 
|
| 
 »  | 
 >33MHz  | 
 Closed  | 
| 
 
  | 
 £ 33MHz | 
 Open  |