MICRONICS COMPUTERS, INC. M4PI Processor 80486SX/SL80486SX/80486DX/SL80486DX/80486DX2/SL80486DX2/ 80486DX4/Pentium Overdrive Processor 25/33/50(internal)/66(internal)/75(internal)/100(internal)MHz Speed Chip Set Intel Max. 128MB Onboard DRAM Cache 128/256KB BIOS Phoenix Dimensions 330mm x 218mm I/O 32-bit PCI slots (3), floppy drive interface, IDE interfaces Options (2), parallel port, serial ports (2) NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location Auxiliary keyboard J8 IDE interface LED J54 connector Serial port 1 J18 Reset switch J55 Serial port 2 J21 Speaker J56 Parallel port J22 Power LED & keylock J57 IDE interface (ISA) J38 IDE interface (PCI) J81 Floppy drive J39 32-bit PCI slots PC1 - PC3 interface USER CONFIGURABLE SETTINGS Function Jumper/Switch Position » PCI IDE IRQ select IRQ14 J19 pins 1 & 2 closed PCI IDE IRQ select IRQ15 J19 pins 2 & 3 closed » Factory configured - do not J20 N/A alter » Factory configured - do not J66 Open alter » Factory configured - do not J67 N/A alter » Parallel port ECP mode J76 Open enabled Parallel port ECP mode J76 Closed disabled » Factory configured - do not J80 N/A alter » Flash BIOS write protect SW1/4 On disabled Flash BIOS write protect SW1/4 Off enabled » PCI card installed SW1/5 On PCI card not installed SW1/5 Off » On board mouse enabled (uses SW1/8 On IRQ12) On board mouse disabled SW1/8 Off » Factory configured - do not W1 N/A alter » Factory configured - do not W5 N/A alter » Parallel port IRQ select W8 pins 2 & 3 IRQ5 closed Parallel port IRQ select W8 pins 1 & 2 IRQ7 closed » Flash BIOS mode select W10 pins 2 & 3 normal closed Flash BIOS mode select W10 pins 1 & 2 recovery closed » PCI IDE chip enabled W12 Closed PCI IDE chip disabled W12 Open » ISA IDE IRQ select IRQ14 W13 pins 1 & 2 closed ISA IDE IRQ select IRQ15 W13 pins 2 & 3 closed Note: The location of J19 is unidentified. DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 8MB (1) 1M x 36 (1) 1M x 36 NONE NONE 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 16MB (1) 2M x 36 (1) 2M x 36 NONE 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) 1M x 36 (1) 1M x 36 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 40MB (1) 1M x 36 (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 40MB (1) 4M x 36 (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 48MB (1) 2M x 36 (1) 2M x 36 (1) 4M x 36 (1) 4M x 36 48MB (1) 4M x 36 (1) 4M x 36 (1) 2M x 36 (1) 2M 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 72MB (1) 1M x 36 (1) 1M x 36 (1) 8M x 36 (1) 8M x 36 72MB (1) 8M x 36 (1) 8M x 36 (1) 1M x 36 (1) 1M x 36 80MB (1) 2M x 36 (1) 2M x 36 (1) 8M x 36 (1) 8M x 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 80MB (1) 8M x 36 (1) 8M x 36 (1) 2M x 36 (1) 2M x 36 96MB (1) 4M x 36 (1) 4M x 36 (1) 8M x 36 (1) 8M x 36 96MB (1) 8M x 36 (1) 8M x 36 (1) 4M x 36 (1) 4M x 36 128MB (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 CACHE CONFIGURATION Size Bank 0 Bank 1 128KB (4) 32K x 8 NONE 256KB (4) 32K x 8 (4) 32K x 8 CACHE JUMPER CONFIGURATION Size J52 J58 128KB pins 2 & 3 closed Open 256KB pins 1 & 2 closed Closed CPU TYPE CONFIGURATION Type j59 j71 j73 j74 80486SX Closed 2 & 3 2 & 3 Open SL80486SX Closed 2 & 3 1 & 2, 3 & Closed 4 80486DX Closed 1 & 2, 3 & 2 & 3 Open 4 SL80486DX Closed 1 & 2, 3 & 1 & 2, 3 & Closed 4 4 80486DX2 Closed 1 & 2, 3 & 2 & 3 Open 4 SL80486DX2 Closed 1 & 2, 3 & 1 & 2, 3 & Closed 4 4 80486DX4 Closed 1 & 2, 3 & 1 & 2, 3 & Closed 4 4 P24T Open 1 & 2, 3 & 1 & 2, 3 & Closed 4 4 Note: Pins designated should be in the closed position. CPU SPEED CONFIGURATION Speed SW1/6 SW1/7 25MHz On On 33MHz Off On 50iMHz On Off 66iMHz Off On 75iMHz On On 100iMHz Off On DMA CONFIGURATION DMA W6 W7 DMA1 pins 1 & 2 closed pins 1 & 2 closed DMA3 pins 2 & 3 closed pins 2 & 3 closed PCI IRQ CONFIGURATION IRQ SW1/1 SW1/2 SW/3 IRQ5 On On Off IRQ11 On Off On IRQ15 Off On On