DIAMOND FLOWER, INC. 486-25/33UNB AIO, 486DX2-50UNB AIO Processor 80486SX/80486DX/ODP486SX/80486DX2 Processor Speed 20/25/33/50(internal)MHz Chip Set UMC Max. Onboard DRAM 16MB Cache None BIOS AMI Dimensions 330mm x 218mm I/O Options Bus mouse port, floppy drive interface, IDE interface, parallel port, serial port (2), VGA port NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location IDE interface CN1 Turbo switch J3 & J8 Floppy drive CN2 Reset switch J4 & J9 interface VGA feature CN3 IDE interface LED J5 connector VGA port CN4 Power LED & keylock J6 Parallel port CN5 Speaker J7 Bus mouse port CN6 External battery J10 Serial port 1 CN7 Serial port 2 JP31 Alternate keyboard J1 Riser card S1 connector Turbo LED J2 USER CONFIGURABLE SETTINGS Function Jumper Position » Battery select internal J11 Pins 2 & 3 closed Battery select external J11 Pins 1 & 2 closed » Speaker select internal JP1 Closed Speaker select external JP1 Open » Onboard VGA local bus JP2 Pins 2 & 3 closed enabled JP3 Closed » Onboard VGA local bus JP2 Pins 1 & 2 closed disabled JP3 Open » Factory configured - do not JP4 Closed alter » Factory configured - do not JP5 Pins 1 & 2 and 3 & 4 alter closed » Factory configured - do not JP6 Open alter » Factory configured - do not JP7 Open alter » BIOS type select 27C256 JP8 Pins 2 & 3 closed (32KB) BIOS type select 27C512 JP8 Pins 1 & 2 closed (64KB) » Factory configured - do not JP10 Open alter » Monitor type select color JP11 Closed Monitor type select JP11 Open monochrome » VGA port (CN4) interrupt JP12 Open select IRQ2 VGA port (CN4) interrupt JP12 Closed select none » Factory configured - do not JP13 Open alter » Factory configured - do not JP14 Closed alter » Floppy interface enabled JP20 Pins 1 & 2 closed Floppy interface disabled JP20 Pins 2 & 3 closed » Factory configured - do not JP21 Pins 1 & 2 closed alter » IDE interface enabled JP22 Pins 1 & 2 closed IDE interface disabled JP22 Pins 2 & 3 closed PARALLEL PORT 1 (CN5) CONFIGURATION LPT I/O Address Interrupt JP9 JP15 JP16 LPT 1 3BC-3BEh IRQ7 Pins 1 Pins 2 Pins 1 & 2 & 3 & 2 LPT 2 378-37Ah IRQ7 Pins 1 Pins 1 Pins 1 & 2 & 2 & 2 LPT 3 278-27Ah IRQ5 Pins 2 Pins 1 Pins 2 & 3 & 2 & 3 Disabled N/A N/A N/A Pins 2 Pins 2 & 3 & 3 Note: Pins designated should be in the closed position. SERIAL PORTS 1 & 2 CONFIGURATION Serial Port Serial Port JP17 JP18 JP19 1 2 COM1 COM2 Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 closed closed closed COM2 COM1 Pins 1 & 2 Pins 1 & 2 Pins 2 & 3 closed closed closed COM1 Disabled Pins 1 & 2 Pins 2 & 3 Pins 1 & 2 closed closed closed Disabled COM1 Pins 2 & 3 Pins 1 & 2 Pins 2 & 3 closed closed closed Disabled COM2 Pins 2 & 3 Pins 1 & 2 Pins 1 & 2 closed closed closed COM2 Disabled Pins 1 & 2 Pins 2 & 3 Pins 2 & 3 closed closed closed Disabled Disabled Pins 2 & 3 Pins 2 & 3 Open closed closed SERIAL PORT 1 (CN1) FORCED TRUE CONFIGURATION Mode JP24 JP25 JP26 Normal operation Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 closed closed closed Forced true Pins 2 & 3 Pins 2 & 3 Pins 2 & 3 closed closed closed SERIAL PORT 2 (JP31) FORCED TRUE CONFIGURATION Mode JP27 JP28 JP29 Normal operation Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 closed closed closed Forced true Pins 2 & 3 Pins 2 & 3 Pins 2 & 3 closed closed closed SERIAL PORT 1 (CN7) DTE/DCE CONFIGURATION Function JP30 » DTE Pins 1 & 2, 3 & 4, 5 & 6, 7 & 8, and 9 & 10 closed DCE Pins 1 & 3, 2 & 4, 5 & 7, 6 & 8, and 9 & 10 closed SERIAL PORT 2 (JP31) DTE/DCE CONFIGURATION Function JP23 » DTE Pins 1 & 2, 3 & 4, 5 & 6, 7 & 8, and 9 & 10 closed DCE Pins 1 & 3, 2 & 4, 5 & 7, 6 & 8, and 9 & 10 closed VRAM CONFIGURATION Size VRAM Location 512KB (4) 44256 Bank 0 1024KB (8) 44256 Bank 0 & 1 DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 1MB (1) 256K x NONE NONE NONE 36 2MB (1) 256K x (1) 256K x NONE NONE 36 36 3MB (1) 256K x (1) 256K x (1) 256K x NONE 36 36 36 4MB (1) 256K x (1) 256K x (1) 256K x (1) 256K x 36 36 36 36 4MB (1) 1M x 36 NONE NONE NONE 5MB (1) 256K x (1) 1M x 36 NONE NONE 36 6MB (1) 256K x (1) 256K x (1) 1M x 36 NONE 36 36 8MB (1) 1M x 36 (1) 1M x 36 NONE NONE 9MB (1) 256K x (1) 1M x 36 (1) 1M x 36 NONE 36 10MB (1) 256K x (1) 256K x (1) 1M x 36 (1) 1M x 36 36 36 12MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 NONE 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36