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==View or Print jumper settings using Fixedsys or New Courier fonts== ACER 486 PCI SYSTEM (Model V20) - additional data available at this site: - http://www.acer.com.mx/soporte/techbase/machine/ng1191e2.html - 4-72 pin SIMM slots (1-64meg FPM DRAM) - 3-32bit PCI Bus slots - 1-32bit VESA Local Bus slots - 5-16bit ISA slots - 1-8bit ISA slot - 128k-512k CACHE support in 8-28pin sockets + 1 TAG RAM socket - 1994 ACER v20 bios (v2 0R03-G0) - Green PC Connector - ACER ALI M1429 A1 9432 / ALI M1431 A2 9432 chipset - Supports 3.3/5volt CPU's - ZIF CPU socket which supports these processors: INTEL 80486SX/DX/DX2/DX4,P24D,P24T CYRIX CX486DX/DX2(M7) AMD AM486DX/DX2/DX4, and all AMD SL chips - Supports speeds of 25/33/40/50/66/75/100 MHz. - Bus master IDE interface for upto 4 IDE devices. - Multi-I/O chip supports 2 - 16550 Fast UART serial ports 1 - parallel port, 1 - floppy disk interface. - manufactured by: ACER INC. ---------------------------------------------------------------------------- CONNECTIONS ---------------------------------------------------------------------------- Purpose Location Purpose Location ---------------------------------------------------------------------------- Serial port 1 CN1 Reset/green PC connector CN9 pins 7+8 Serial port 2 CN2 Power LED + keylock CN1O pins 1-5 Parallel port CN3 Speaker CN1O pins 7-10 Floppy interface CN4 Turbo LED CN1O pins 12+13 IDE interface 1 CN5 Turbo switch CN1O pins 15-17 IDE interface 2 CN6 Reset switch CN1O pins 19+20 PS/2 mouse port CN7 32-bit PCI slots PC1 - PC3 IDE interface LED CN8 32-bit VESA slots SL1 Power LED + keylock CN9 pins 1-4 ---------------------------------------------------------------------------- USER CONFIGURABLE SETTINGS ---------------------------------------------------------------------------- Function Label Position ---------------------------------------------------------------------------- * Password disabled JP1 Pins 2+3 Password enabled JP1 Pins 1+2 * OEM BIOS enabled JP2 Pins 2+3 * Factory configured - do not alter JP2 Pins 1+2 * M5115 I/O enabled JP8 Pins 1+2 M5115 I/O disabled JP8 Pins 2+3 * Local bus IDE I/O address 0FxH JP11 Pins 1+2 Local bus IDE I/O address 07xH JP11 Pins 2+3 * M5213N local bus IDE enabled JP12 Pins 2+3 M5213N local bus IDE disabled JP12 Pins 1+2 * Reset key enabled JP23 Pins 1+2 Reset key disabled JP23 Pins 2+3 * Green PC connector enabled JP24 Pins 2+3 Reset switch enabled JP24 Pins 1+2 * Factory configured - do not alter JP41 Pins 2+3 ---------------------------------------------------------------------------- DRAM CONFIGURATION ---------------------------------------------------------------------------- Size Bank 0 Bank 1 Bank 2 Bank 3 ---------------------------------------------------------------------------- 4MB None None None (1)1Mx36 8MB (1)2Mx36 None None None 8MB None None (1)1Mx36 (1)1Mx36 8MB None None (1)2Mx36 None 12MB (1)2Mx36 None (1)1Mx36 None 12MB (1)2Mx36 None None (1)1Mx36 12MB None (1)1Mx36 (1)1Mx36 (1)1Mx36 12MB (1)1Mx36 None (1)2Mx36 None 12MB None (1)1Mx36 (1)2Mx36 None 16M (1)2Mx36 None (1)2Mx36 None 16MB (1)2Mx36 None (1)1Mx36 (1)1Mx36 --------------------------------------------------------------------- Size Bank 0 Bank 1 Bank 2 Bank 3 --------------------------------------------------------------------- 16MB (1)1Mx36 (1)1Mx36 (1)1Mx36 (1)1Mx36 16MB None None None (1)4Mx36 16MB (1)1Mx36 (1)1Mx36 (1)2Mx36 None 24MB (1)2Mx36 None (1)4Mx36 None 24MB (1)2Mx36 None None (1)4Mx36 24MB (1)4Mx36 None (1)2Mx36 None 24MB None (1)4Mx36 (1)2Mx36 None 28MB (1)2Mx36 None (1)4Mx36 (1)1Mx36 28MB (1)2Mx36 None (1)1Mx36 (1)4Mx36 28MB (1)4Mx36 (1)1Mx36 (1)2Mx36 None 28MB (1)1Mx36 (1)4Mx36 (1)2Mx36 None 32MB None None (1)4Mx36 (1)4Mx36 40MB (1)2Mx36 None (1)4Mx36 (1)4Mx36 40MB (1)4Mx36 (1)4Mx36 (1)2Mx36 None 48MB None (1)4Mx36 (1)4Mx36 (1)4Mx36 64MB (1)4Mx36 (1)4Mx36 (1)4Mx36 (1)4Mx36 --------------------------------------------------------------------- CACHE CONFIGURATION --------------------------------------------------------------------- Size Bank 0 Bank 1 TAG --------------------------------------------------------------------- 128KB (4) 32K x 8 None (1) 32K x 8 256KB (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 512KB (4) 128K x 8 None (1) 32K x 8 --------------------------------------------------------------------- CACHE JUMPER CONFIGURATION --------------------------------------------------------------------- Size JP13 JP15 JP16 --------------------------------------------------------------------- 128KB Pins 2 + 3 Pins 2 + 3 Pins 1 + 2 256KB Pins 2 + 3 Pins 1 + 2 Pins 2 + 3 512KB Pins 1 + 2 Pins 1 + 2 Pins 1 + 2 -------------------------------------------------- CPU SPEED SELECTION -------------------------------------------------- Speed JP17 JP21 -------------------------------------------------- 25MHz Pins 1 + 5 Pins 2 + 3 33MHz Pins 2 + 6 Pins 2 + 3 40MHz Pins 3 + 7 Pins 1 + 2 50iMHz Pins 1 + 5 Pins 2 + 3 50MHz Pins 4 + 8 Pins 1 + 2 66iMHz Pins 2 + 6 Pins 2 + 3 75iMHz Pins 1 + 5 Pins 2 + 3 100iMHz Pins 2 + 6 Pins 2 + 3 ------------------------------------------------------------------------ CPU TYPE SELECTION ------------------------------------------------------------------------ Type JP9 JP20 JP26 JP27 ------------------------------------------------------------------------ AM486SX Pins 2 + 3 Pins 1 + 2 Pins 1 + 2 Pins 1 + 2 (SL)AM486SX Pins 1 + 2 Pins 1 + 2 Pins 1 + 2 Pins 1 + 2 80486SX Pins 2 + 3 Pins 1 + 2 Pins 2 + 3 Pins 2 + 3 AM486DX Pins 2 + 3 Pins 1 + 2 Pins 1 + 2 Pins 1 + 2 (SL)AM486DX Pins 1 + 2 Pins 1 + 2 Pins 1 + 2 Pins 1 + 2 80486DX Pins 2 + 3 Pins 1 + 2 Pins 2 + 3 Pins 2 + 3 CX486DX2 Pins 2 + 3 Pins 1 + 2 Pins 2 + 3 Open AM486DX2 Pins 2 + 3 Pins 1 + 2 Pins 1 + 2 Pins 1 + 2 (SL)AM486DX2 Pins 1 + 2 Pins 1 + 2 Pins 1 + 2 Pins 1 + 2 80486DX2 Pins 2 + 3 Pins 1 + 2 Pins 2 + 3 Pins 2 + 3 AM486DX4 Pins 2 + 3 Pins 1 + 2 Pins 1 + 2 Pins 1 + 2 (SL)AM486DX4 Pins 1 + 2 Pins 1 + 2 Pins 1 + 2 Pins 1 + 2 80486DX4 Pins 2 + 3 Pins 1 + 2 Pins 2 + 3 Pins 2 + 3 P24D Pins 2 + 3 Pins 2 + 3 Pins 2 + 3 Pins 2 + 3 P24T Pins 2 + 3 Pins 2 + 3 Pins 2 + 3 Pins 2 + 3 ------------------------------------------------------------------------ Type JP33 JP34 JP35 JP37 ------------------------------------------------------------------------ AM486sx Pins 1 + 3 Pins 2 + 3 Pins 2 + 3 Pins 2 + 3 (SL)AM486SX Pins 1 + 3 Pins 2 + 3 Pins 2 + 3 Pins 2 + 3 80486SX Pins 1 + 3 Pins 2 + 3 Pins 2 + 3 Pins 2 + 3 AM486DX Pins 1 + 3 Pins 2 + 3 Pins 2 + 3 Pins 2 + 3 (SL)AM486DX Pins 1 + 3 Pins 2 + 3 Pins 2 + 3 Pins 2 + 3 80486DX Pins 1 + 3 Pins 2 + 3 Pins 2 + 3 Pins 2 + 3 CX486DX2 Pins 2 + 4 Pins 1 + 2 Pins 2 + 3 Pins 1 + 2 AM486DX2 Pins 1 + 3 Pins 2 + 3 Pins 2 + 3 Pins 2 + 3 (SL)AM486DX2 Pins 1 + 3 Pins 2 + 3 Pins 2 + 3 Pins 2 + 3 80486DX2 Pins 1 + 3 Pins 2 + 3 Pins 2 + 3 Pins 2 + 3 AM486DX4 Pins 1 + 3 Pins 2 + 3 Pins 2 + 3 Pins 2 + 3 (SL)AM486DX4 Pins 1 + 3 Pins 2 + 3 Pins 2 + 3 Pins 2 + 3 80486DX4 Pins 1 + 3 Pins 2 + 3 Pins 2 + 3 Pins 2 + 3 P24D Pins 1 + 3 Pins 2 + 3 Pins 1 + 2 Pins 2 + 3 P24T Pins 1 + 3 Pins 2 + 3 Pins 1 + 2 Pins 2 + 3 ---------------------------------------------- CPU MULTIPLIER SELECTION (80486DX4 ONLY) ---------------------------------------------- Multiplier JP22 ---------------------------------------------- 2x Pins 3 + 4 closed 2.5x Pins 2 + 3 closed 3x Pins 1 + 2 closed ---------------------------------------------- VESA Local Bus Wait States ---------------------------------------------- Wait States CPU JP10 JP18 ---------------------------------------------- 0 25MHz 2-3 1-2 * 1 33MHz 1-2 2-3 =========================END OF DATA FOR MODEL V20======================== |
