AST RESEARCH, INC. PREMIUM/286 (MODELS 202143-001 & 202143-002) Processor 80286DX Processor Speed 10MHz Chip Set AST Max. Onboard DRAM None (2/4 or 8/16MB on external memory card(s)) Cache None BIOS AST Dimensions 330mm x 218mm I/O Options 32-bit external memory/CPU card slot (2), parallel port, serial port NPU Options 80287 [Image] CONNECTIONS Purpose Location Purpose Location 32-bit external CN1 Front panel J25 memory/CPU card switches & LEDs 32-bit external CN2 Optional ROM (odd) U11 memory/CPU card External battery J22 Optional ROM U13 (even) Speaker J24 [Image] CONNECTIONS Purpose Location Purpose Location Serial port 1 COM1 Keyboard KYBD Parallel port LPT1 SERIAL PORT CONFIGURATION Serial Port Jumper E24-E25 Jumper E31 Jumper E32 (COM1) COM1: using pins 1 & 2 closed open IRQ4 closed COM2: using pins 2 & 3 open closed IRQ3 closed PARALLEL PORT CONFIGURATION Parallel Port Jumper E27 Jumper E28 Jumper E29 Jumper E30 (LPT) LPT1: using IRQ7 closed open closed open LPT2: using IRQ7 open closed open closed BIOS TYPE CONFIGURATION BIOS Type Jumper E4 Jumper E5 Jumper E6 27128 open open closed 27256 closed closed open OPTIONAL ROM TYPE CONFIGURATION ROM Type Address Jumper Jumper Jumper Jumper E10 E11 E12 E13 27128 F000-F7FFh open open closed open 27128 E800-EFFFh open open open closed 27256 E000-EFFFh closed closed open open USER CONFIGURABLE SETTINGS Function Jumper Position » Factory configured - do not alter E2 open » BIOS wait state select one E3 open BIOS wait states select zero E3 closed » Latched PROM BIOS disabled E7 open Latched PROM BIOS enabled E7 closed » Latched PROM BIOS (for optional E8, E14 & open ROMs) disabled E15 Latched PROM BIOS (for optional E8, E14 & closed ROMs) enabled E15 » Optional ROM wait state select E9 open one Optional ROM wait states select E9 closed zero » I/O bus wait states select two E20 closed (at 10MHz operation) I/O bus wait state select one (at E20 open 10MHz operation) » Factory configured - do not alter E21 open [Image] USER CONFIGURABLE SETTINGS FOR FASTRAM MEMORY BOARD Function Jumper/Switch Position » Parity check enabled E1 closed Parity check disabled E1 open » Wait states select zero E2 closed Wait state select one E2 open » Page mode disabled SW1/switch 5 closed Page mode enabled SW1/switch 5 open » Board installed select first SW1/switch 6 closed FASTram board installed Board installed select SW1/switch 6 open second FASTram board installed DRAM CONFIGURATION FOR FASTRAM MEMORY BOARD Size Bank 0 Bank 1 Bank 2 Bank 3 512KB (18) 41256 NONE NONE NONE 1MB (18) 41256 (18) 41256 NONE NONE 1.5MB (18) 41256 (18) 41256 (18) 41256 NONE 2MB (18) 41256 (18) 41256 (18) 41256 (18) 41256 DRAM SWITCH CONFIGURATION FOR FASTRAM MEMORY BOARD Recognized by SW1/switch SW1/switch SW1/switch SW1/switch 4 System 1 2 3 128KB closed closed closed closed 256KB open closed closed closed 384KB closed open closed closed 512KB open open closed closed 640KB closed closed open closed 768KB open closed open closed 896KB closed open open closed 1024KB open open open closed 1152KB closed closed closed open 1280KB open closed closed open 1408KB closed open closed open 1536KB open open closed open 1664KB closed closed open open 1792KB open closed open open 1920KB closed open open open 2048KB open open open open BASE I/O ADDRESS CONFIGURATION FOR FASTRAM MEMORY BOARD Base I/O SW1/switch 7 SW1/switch 8 SW1/switch 9 SW1/switch Address 10 0208h closed closed closed closed 0218h 1 open closed closed closed 0258h 2 open closed open closed 0268h closed open open closed 02A8h closed open closed open 02B8h open open closed open 02E8h closed open open open Note 1 :This setting is recommended when this is the first FASTram Memory Board installed. Note 2 :This setting is recommended when this is the second FASTram Memory Board installed. [Image] USER CONFIGURABLE SETTINGS FOR ADVANCED FASTRAM MEMORY BOARD Function Jumper Position » Factory configured - do not alter E0-E1 pins 2 & 3 closed » Board installed select first E2 open FASTram board installed E4 closed Board installed select second E2 closed FASTram board installed E4 open » Memory installed select as E3 closed expanded Memory installed select as paged E3 open Note:Parity, wait states, size, and base I/O address are set using the software configuration utility. DRAM CONFIGURATION FOR ADVANCED FASTRAM MEMORY BOARD Size Bank 0 Bank 1 Bank 2 Bank 3 512KB (2) 256K x 9 NONE NONE NONE 1MB (2) 256K x 9 (2) 256K x 9 NONE NONE 1.5MB (2) 256K x 9 (2) 256K x 9 (2) 256K x 9 NONE 2MB (2) 256K x 9 (2) 256K x 9 (2) 256K x 9 (2) 256K x 9 2MB (2) 1M x 9 NONE NONE NONE 3MB (2) 256K x 9 (2) 256K x 9 (2) 1M x 9 NONE 4MB (2) 1M x 9 (2) 1M x 9 NONE NONE 5MB (2) 256K x 9 (2) 256K x 9 (2) 1M x 9 (2) 1M x 9 6MB (2) 1M x 9 (2) 1M x 9 (2) 1M x 9 NONE 8MB (2) 1M x 9 (2) 1M x 9 (2) 1M x 9 (2) 1M x 9