DIGITAL EQUIPMENT CORPORATION PRIORIS XL Device Type Mainboard Processor 80486DX/80486DX2/Pentium Processor Speed 25/33/50(internal)/66(internal)MHz Chip Set Unidentified Video Chip Set Unidentified Maximum Onboard 128MB (80486)/512MB (Pentium) Memory Maximum Video 1MB Memory Cache 128/256KB BIOS Unidentified Dimensions 305mm x 244mm I/O Options 32-bit PCI slots (3), floppy drive interface, IDE interface, SCSI interface, Wide Ultra SCSI interface, parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port, CPU slot NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Parallel port CN1 IDE interface CN9 VGA port CN2 VGA feature connector CN10 Serial port CN3 5v auxiliary power P1 Serial port CN4 5v power P2 PS/2 mouse port CN5 3.3v power P3 Ultra Wide SCSI CN6 32-bit PCI slots PC1 – PC3 interface SCSI interface CN7 CPU slot SL1 Floppy drive interface CN8 USER CONFIGURABLE SETTINGS Function Label Position » VGA IRQ9 disabled J9 Open VGA IRQ9 enabled J9 Closed » On board I/O enabled J17 Closed On board I/O disabled J17 Open » Wide SCSI disabled J22 Open Wide SCSI enabled J22 Closed » Monitor type select color J37 Closed Monitor type select monochrome J37 Open » Password normal operation J38 Open Password clear J38 Closed » BIOS normal operation J39 Open BIOS recovery mode J39 Closed » BIOS upgrade enabled J41 Closed BIOS upgrade disabled J41 Open » Boot block enabled J50 Pins 1 & 2 closed Boot block disabled J50 Pins 2 & 3 closed SIMM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 8MB (2) 1M x 36 None None None 16MB (2) 2M x 36 None None None 16MB (2) 1M x 36 (2) 1M x 36 None None 24MB (2) 2M x 36 (2) 1M x 36 None None 24MB (2) 1M x 36 (2) 1M x 36 (2) 1M x 36 None 32MB (2) 4M x 36 None None None 32MB (2) 2M x 36 (2) 2M x 36 None None SIMM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 32MB (2) 1M x 36 (2) 1M x 36 (2) 1M x 36 (2) 1M x 36 40MB (2) 4M x 36 (2) 1M x 36 None None 48MB (2) 4M x 36 (2) 2M x 36 None None 48MB (2) 2M x 36 (2) 2M x 36 (2) 2M x 36 None 64MB (2) 2M x 36 (2) 2M x 36 (2) 2M x 36 (2) 2M x 36 64MB (2) 8M x 36 None None None 64MB (2) 4M x 36 (2) 4M x 36 None None 72MB (2) 8M x 36 (2) 1M x 36 None None 80MB (2) 8M x 36 (2) 2M x 36 None None 96MB (2) 8M x 36 (2) 4M x 36 None None 96MB (2) 4M x 36 (2) 4M x 36 (2) 4M x 36 None 128MB (2) 16M x 36 None None None 128MB (2) 8M x 36 (2) 8M x 36 None None 128MB (2) 4M x 36 (2) 4M x 36 (2) 4M x 36 (2) 4M x 36 136MB (2) 16M x 36 (2) 1M x 36 None None 144MB (2) 16M x 36 (2) 2M x 36 None None 152MB (2) 16M x 36 (2) 1M x 36 (2) 1M x 36 (2) 1M x 36 160MB (2) 16M x 36 (2) 4M x 36 None None 176MB (2) 16M x 36 (2) 2M x 36 (2) 2M x 36 (2) 2M x 36 192MB (2) 16M x 36 (2) 8M x 36 None None 192MB (2) 8M x 36 (2) 8M x 36 (2) 8M x 36 None 224MB (2) 16M x 36 (2) 4M x 36 (2) 4M x 36 (2) 4M x 36 256MB (2) 16M x 36 (2) 16M x 36 None None 256MB (2) 8M x 36 (2) 8M x 36 (2) 8M x 36 (2) 8M x 36 272MB (2) 16M x 36 (2) 16M x 36 (2) 1M x 36 (2) 1M x 36 288MB (2) 16M x 36 (2) 16M x 36 (2) 2M x 36 (2) 2M x 36 320MB (2) 16M x 36 (2) 16M x 36 (2) 4M x 36 (2) 4M x 36 320MB (2) 16M x 36 (2) 8M x 36 (2) 8M x 36 (2) 8M x 36 384MB (2) 16M x 36 (2) 16M x 36 (2) 16M x 36 None 512MB (2) 16M x 36 (2) 16M x 36 (2) 16M x 36 (2) 16M x 36 Note: If 80486 module is installed, it will accept up to 128MB. VIDEO MEMORY CONFIGURATION Note: the size of the video memory is unidentified. CPU TYPE SELECTION Type J27 Intel Open All other types Closed CPU CARD SELECTION Type J24 J25 Single CPU installed Pins 1 & 2 closed Pins 1 & 2 closed Multiple CPUs installed Pins 2 & 3 closed Pins 2 & 3 closed [Image] CACHE CONFIGURATION Size Bank 0 128KB (4) 32K x 8 256KB (4) 64K x 8 CACHE JUMPER CONFIGURATION Size J8 J9 J10 128KB Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 closed closed closed 256KB Pins 2 & 3 Pins 2 & 3 Pins 2 & 3 closed closed closed CPU SPEED SELECTION Speed J12 25MHz Pins 1 & 2 closed 33MHz Pins 2 & 3 closed 50iMHz Pins 1 & 2 closed 66iMHz Pins 2 & 3 closed