ACER, INC. AP43 Processor AM486SX/80486SX/SL80486SX/CX486DX/AM846DX/80486DX/ SL80486DX/CX486DX2/CX486DX2(M7P/O)/TI486DX2/AM486DX2/ (SL)AM486DX2/80486DX2/SL80486DX2/CX486DX4(M7P/O)/ CX486DX4(DX4P/O)/AM486DX4(V8T)/AM486DX4S(SV8T)/ AM486DX4S(SV8B)/80486DX4(WT)/80486DX4(WB)/P24D/P24T/ CX5X86 Processor 25/33/40/50(internal)/66(internal)/75(internal)/100(internal)MHz Speed Chip Set SIS Video Chip None Set Maximum 128MB Onboard Memory Maximum None Video Memory Cache 128/256/512KB BIOS AMI Dimensions 250mm x 220mm I/O 32-bit PCI slots (3), floppy drive interface, green PC Options connector, IDE interfaces (2), parallel port, serial ports (2) NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location Serial port 2 CN1 Speaker J7 pins 7 - 10 Serial port 1 CN2 Turbo/green PC LED J7 pins 12 & 13 Chassis fan power CN3 Turbo switch J7 pins 15 - 17 Chassis fan power CN4 Reset switch J7 pins 19 & 20 Floppy drive CN5 External battery J8 interface Parallel port CN6 Green PC connector JP30 IDE interface 2 CN7 IDE interface LED JP31 IDE interface 1 CN8 32-bit PCI slots PC1 - PC3 Power LED & keylock J7 pins 1 - 5 Note: If connector for J7 is 12-pin, connect red wire to pin 11. USER CONFIGURABLE SETTINGS Function Label Position » Factory configured - do not JP11 Unidentified alter » Factory configured - do not JP12 Unidentified alter On board I/O enabled JP21 Pins 1 & 2 closed On board I/O disabled JP21 Pins 2 & 3 closed Flash BIOS voltage select 12v JP24 Pins 2 & 3 closed Flash BIOS voltage select 5v JP24 Pins 1 & 2 closed » CMOS memory normal operation JP28 Pins 1 & 2 closed CMOS memory clear JP28 Pins 2 & 3 closed DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 1MB (1) 256K x None None None 36 2MB (1) 512K x None None None 36 2MB (1) 256K x (1) 256K x None None 36 36 3MB (1) 512K x (1) 256K x None None 36 36 3MB (1) 256K x (1) 256K x (1) 256K x None 36 36 36 3MB (1) 256K x (1) 512K x None None 36 36 4MB (1) 1M x 36 None None None 4MB (1) 512K x (1) 256K x (1) 256K x None 36 36 36 4MB (1) 512K x (1) 512K x None None 36 36 4MB (1) 256K x (1) 256K x (1) 256K x (1) 256K x 36 36 36 36 5MB (1) 1M x 36 (1) 256K x None None 36 5MB (1) 512K x (1) 256K x (1) 256K x (1) 256K x 36 36 36 36 5MB (1) 256K x (1) 512K x (1) 512K x None 36 36 36 5MB (1) 256K x (1) 1M x 36 None None 36 6MB (1) 1M x 36 (1) 256K x (1) 256K x None 36 36 6MB (1) 1M x 36 (1) 512K x None None 36 6MB (1) 512K x (1) 512K x (1) 512K x None 36 36 36 6MB (1) 512K x (1) 1M x 36 None None 36 7MB (1) 1M x 36 (1) 256K x (1) 256K x (1) 256K x 36 36 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 7MB (1) 256K x (1) 512K x (1) 512K x (1) 512K x 36 36 36 36 8MB (1) 2M x 36 None None None 8MB (1) 1M x 36 (1) 512K x (1) 512K x None 36 36 8MB (1) 1M x 36 (1) 1M x 36 None None 8MB (1) 512K x (1) 512K x (1) 512K x (1) 512K x 36 36 36 36 9MB (1) 2M x 36 (1) 256K x None None 36 9MB (1) 256K x (1) 1M x 36 (1) 1M x 36 None 36 9MB (1) 256K x (1) 2M x 36 None None 36 10MB (1) 2M x 36 (1) 256K x (1) 256K x None 36 36 10MB (1) 2M x 36 (1) 512K x None None 36 10MB (1) 1M x 36 (1) 512K x (1) 512K x (1) 512K x 36 36 36 10MB (1) 512K x (1) 1M x 36 (1) 1M x 36 None 36 10MB (1) 512K x (1) 2M x 36 None None 36 11MB (1) 2M x 36 (1) 256K x (1) 256K x (1) 256K x 36 36 36 12MB (1) 2M x 36 (1) 512K x (1) 512K x None 36 36 12MB (1) 2M x 36 (1) 1M x 36 None None 12MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 None 12MB (1) 1M x 36 (1) 2M x 36 None None 13MB (1) 256K x (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 36 14MB (1) 2M x 36 (1) 512K x (1) 512K x (1) 512K x 36 36 36 14MB (1) 512K x (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 36 16MB (1) 4M x 36 None None None 16MB (1) 2M x 36 (1) 1M x 36 (1) 1M x 36 None 16MB (1) 2M x 36 (1) 2M x 36 None None 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 17MB (1) 4M x 36 (1) 256K x None None 36 17MB (1) 256K x (1) 2M x 36 (1) 2M x 36 None 36 17MB (1) 256K x (1) 4M x 36 None None 36 18MB (1) 4M x 36 (1) 256K x (1) 256K x None 36 36 18MB (1) 4M x 36 (1) 512K x None None 36 18MB (1) 512K x (1) 2M x 36 (1) 2M x 36 None 36 18MB (1) 512K x (1) 4M x 36 None None 36 19MB (1) 4M x 36 (1) 256K x (1) 256K x (1) 256K x 36 36 36 20MB (1) 4M x 36 (1) 512K x (1) 512K x None 36 36 20MB (1) 4M x 36 (1) 1M x 36 None None 20MB (1) 2M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 20MB (1) 1M x 36 (1) 2M x 36 (1) 2M x 36 None 20MB (1) 1M x 36 (1) 4M x 36 None None 22MB (1) 4M x 36 (1) 512K x (1) 512K x (1) 512K x 36 36 36 24MB (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 None 24MB (1) 4M x 36 (1) 2M x 36 None None 24MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 None DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 24MB (1) 2M x 36 (1) 4M x 36 None None 25MB (1) 256K x (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 36 26MB (1) 512K x (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 36 28MB (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 28MB (1) 1M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 32MB (1) 8M x 36 None None None 32MB (1) 4M x 36 (1) 2M x 36 (1) 2M x 36 None 32MB (1) 4M x 36 (1) 4M x 36 None None 32MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 33MB (1) 8M x 36 (1) 256K x None None 36 33MB (1) 256K x (1) 4M x 36 (1) 4M x 36 None 36 33MB (1) 256K x (1) 8M x 36 None None 36 34MB (1) 8M x 36 (1) 256K x (1) 256K x None 36 36 34MB (1) 8M x 36 (1) 512K x None None 36 34MB (1) 512K x (1) 4M x 36 (1) 4M x 36 None 36 34MB (1) 512K x (1) 8M x 36 None None 36 35MB (1) 8M x 36 (1) 256K x (1) 256K x (1) 256K x 36 36 36 36MB (1) 8M x 36 (1) 512K x (1) 512K x None 36 36 36MB (1) 8M x 36 (1) 1M x 36 None None 36MB (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 None 36MB (1) 1M x 36 (1) 8M x 36 None None 38MB (1) 8M x 36 (1) 512K x (1) 512K x (1) 512K x 36 36 36 40MB (1) 8M x 36 (1) 1M x 36 (1) 1M x 36 None 40MB (1) 8M x 36 (1) 2M x 36 None None 40MB (1) 4M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 40MB (1) 2M x 36 (1) 4M x 36 (1) 4M x 36 None 40MB (1) 2M x 36 (1) 8M x 36 None None 44MB (1) 8M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 48MB (1) 8M x 36 (1) 2M x 36 (1) 2M x 36 None 48MB (1) 8M x 36 (1) 4M x 36 None None 48MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 None 48MB (1) 4M x 36 (1) 8M x 36 None None 49MB (1) 256K x (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 36 50MB (1) 512K x (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 36 52MB (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 56MB (1) 8M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 56MB (1) 2M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 64MB (1) 8M x 36 (1) 4M x 36 (1) 4M x 36 None 64MB (1) 8M x 36 (1) 8M x 36 None None 64MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 64MB (1) 16M x 36 None None None 65MB (1) 256K x (1) 8M x 36 (1) 8M x 36 None 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 65MB (1) 16M x 36 (1) 256K x None None 36 66MB (1) 16M x 36 (1) 256K x (1) 256K x None 36 36 66MB (1) 16M x 36 (1) 512K x None None 36 67MB (1) 16M x 36 (1) 256K x (1) 256K x (1) 256K x 36 36 36 68MB (1) 16M x 36 (1) 512K x (1) 512K x None 36 36 68MB (1) 16M x 36 (1) 1M x 36 None None 68MB (1) 1M x 36 (1) 8M x 36 (1) 8M x 36 None 70MB (1) 16M x 36 (1) 512K x (1) 512K x (1) 512K x 36 36 36 72MB (1) 16M x 36 (1) 2M x 36 None None 72MB (1) 2M x 36 (1) 8M x 36 (1) 8M x 36 None 76MB (1) 16M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 80MB (1) 16M x 36 (1) 2M x 36 (1) 2M x 36 None 80MB (1) 4M x 36 (1) 8M x 36 (1) 8M x 36 None 88MB (1) 16M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 96MB (1) 16M x 36 (1) 4M x 36 (1) 4M x 36 None 96MB (1) 16M x 36 (1) 8M x 36 None None 96MB (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 None 97MB (1) 256K x (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 36 98MB (1) 512K x (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 36 100MB (1) 1M x 36 (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 104MB (1) 2M x 36 (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 112MB (1) 4M x 36 (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 128MB (1) 16M x 36 (1) 8M x 36 (1) 8M x 36 None 128MB (1) 16M x 36 (1) 16M x 36 None None 128MB (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 Note: Board also accepts x 32 SIMMs. The location of the banks is unidentified. CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 128KB (4) 32K x 8 None (1) 16K/32K x 8 256KB (A) (4) 32K x 8 (4) 32K x 8 (1) 16K/32K x 8 256KB (B) (4) 64K x 8 None (1) 16K/32K x 8 512KB (A) (4) 64K x 8 (4) 64K x 8 (1) 32K x 8 512KB (B) (4) 128K x 8 None (1) 32K x 8 CACHE JUMPER CONFIGURATION Size JP1 JP2 JP3 JP4 JP5 128KB 1 & 2, 3 1 & 2 2 & 3 1 & 2 1 & 2 & 4 256KB (A) 2 & 3, 4 2 & 3 2 & 3 1 & 2 2 & 3 & 5 256KB (B) 1 & 2, 3 1 & 2 1 & 2 1 & 2 2 & 3 & 4 512KB (A) 2 & 3, 4 2 & 3 2 & 3 2 & 3 2 & 3 & 5 512KB (B) 1 & 2, 3 1 & 2 2 & 3 2 & 3 2 & 3 & 4 Note: Pins designated should be in the closed position. CPU SPEED SELECTION Speed JP25 JP26 JP27 25MHz Pins 2 & 3 Pins 2 & 3 Pins 1 & 2 closed closed closed 33MHz Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 closed closed closed 40MHz Pins 1 & 2 Pins 2 & 3 Pins 1 & 2 closed closed closed 50iMHz Pins 2 & 3 Pins 2 & 3 Pins 1 & 2 closed closed closed 66iMHz Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 closed closed closed 75iMHz Pins 2 & 3 Pins 2 & 3 Pins 1 & 2 closed closed closed 100iMHz Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 closed closed closed CPU TYPE SELECTION Type JP6 JP7 JP8 JP9 AM486SX Open Pins 2 & 3 Open Open closed 80486SX Open Pins 2 & 3 Open Open closed SL80486SX Open Pins 2 & 3 Open Open closed CX486DX Open Pins 2 & 3 Open Open closed AM486DX Open Pins 2 & 3 Open Open closed 80486DX Open Pins 2 & 3 Open Open closed SL80486DX Open Pins 2 & 3 Open Open closed CX486DX2 Open Pins 2 & 3 Open Open closed CX486DX2 (M7 Open Pins 2 & 3 Open Open P/O) closed TI486DX2 Open Pins 2 & 3 Open Open closed AM486DX2 Open Pins 2 & 3 Open Open closed (SL) AM486DX2 Open Pins 2 & 3 Open Pins 2 & 3 closed closed 80486DX2 Open Pins 2 & 3 Open Open closed SL80486DX2 Open Pins 2 & 3 Open Open closed CX486DX4 (M7 Open Pins 2 & 3 Open Open P/O) closed CX486DX4 Open Pins 2 & 3 Pins 1 & 2 Pins 1 & 2 (iDX4P/O) closed closed closed AM486DX4 (V8T) Open Pins 2 & 3 Open Open closed AM486DX4S Open Pins 2 & 3 Open Open (SV8T) closed AM486DX4S Open Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 (SV8B) closed closed closed 80486DX4 (WT) Open Pins 2 & 3 Open Open closed 80486DX4 (WB) Open Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 closed closed closed P24D Open Pins 1 & 2 1 & 2 1 & 2 closed P24T Pins 1 & 2 Pins 1 & 2 Open Open closed closed CX5X86 Open Pins 2 & 3 Pins 1 & 2 Pins 1 & 2 closed closed closed CPU TYPE SELECTION (CON’T) Type JP10 JP13 JP14 JP15 JP16 AM486SX Open Open Open 2 & 3 Open 80486SX Open Open Open 2 & 3 Open SL80486SX 1 & 2 Open 2 & 3 2 & 3 Open CX486DX 1 & 2 2 & 3 1 & 2 1 & 2, 3 3 & 4 & 4 AM486DX Open Open Open 1 & 2, 3 3 & 4 & 4 80486DX Open Open Open 1 & 2, 3 3 & 4 & 4 SL80486DX 1 & 2 Open 2 & 3 1 & 2, 3 3 & 4 & 4 CX486DX2 1 & 2 2 & 3 1 & 2 1 & 2, 3 3 & 4 & 4 CX486DX2 (M7 1 & 2 2 & 3 1 & 2 1 & 2, 3 3 & 4 P/O) & 4 TI486DX2 1 & 2 2 & 3 1 & 2 1 & 2, 3 3 & 4 & 4 AM486DX2 Open Open Open 1 & 2, 3 3 & 4 & 4 (SL) AM486DX2 Open Open Open 1 & 2, 3 3 & 4 & 4 80486DX2 Open Open Open 1 & 2, 3 3 & 4 & 4 SL80486DX2 1 & 2 Open 2 & 3 1 & 2, 3 3 & 4 & 4 CX486DX4 (M7 1 & 2 2 & 3 1 & 2 1 & 2, 3 3 & 4 P/O) & 4 CX486DX4 1 & 2 Open 2 & 3 1 & 2, 3 3 & 4 (iDX4P/O) & 4 AM486DX4 (V8T) Open Open Open 1 & 2, 3 3 & 4 & 4 AM486DX4S (SV8T) 1 & 2 Open 2 & 3 1 & 2, 3 3 & 4 & 4 AM486DX4S (SV8B) 1 & 2 Open 2 & 3 1 & 2, 3 3 & 4 & 4 80486DX4 (WT) 1 & 2 Open 2 & 3 1 & 2, 3 3 & 4 & 4 80486DX4 (WB) 1 & 2 Open 2 & 3 1 & 2, 3 3 & 4 & 4 P24D 1 & 2 Open 2 & 3 1 & 2, 3 3 & 4 & 4 P24T 1 & 2 1 & 2 2 & 3 1 & 2, 3 2 & 3 & 4 CX5X86 1 & 2 Open 2 & 3 1 & 2, 3 3 & 4 & 4 Note: Pins designated should be in the closed position. CPU TYPE SELECTION (CON’T) Type JP17 JP18 JP19 JP20 JP29 AM486SX Open Open Open Open 2 & 3 80486SX Open Open Open Open 2 & 3 SL80486SX 3 & 4 Open 1 & 2 4 & 5 2 & 3 CX486DX 2 & 3 2 & 3 Open 2 & 3 2 & 3 AM486DX Open Open Open Open 2 & 3 80486DX Open Open Open Open 2 & 3 SL80486DX 3 & 4 Open 1 & 2 4 & 5 2 & 3 CX486DX2 2 & 3 2 & 3 Open 2 & 3 2 & 3 CX486DX2 (M7 2 & 3 2 & 3 Open 2 & 3 1 & 2 P/O) TI486DX2 2 & 3 2 & 3 Open 2 & 3 1 & 2 AM486DX2 Open Open Open Open 2 & 3 (SL) AM486DX2 Open Open Open Open 1 & 2 80486DX2 Open Open Open Open 2 & 3 SL80486DX2 3 & 4 Open 1 & 2 4 & 5 2 & 3 CX486DX4 (M7 2 & 3 2 & 3 Open 2 & 3 1 & 2 P/O) CX486DX4 1 & 2, 3 1 & 2 2 & 3 4 & 5 1 & 2 (iDX4P/O) & 4 AM486DX4 (V8T) Open Open Open Open 1 & 2 AM486DX4S (SV8T) 3 & 4 Open 1 & 2 4 & 5 1 & 2 AM486DX4S (SV8B) 1 & 2, 3 1 & 2 2 & 3 4 & 5 1 & 2 & 4 80486DX4 (WT) 3 & 4 Open 1 & 2 4 & 5 1 & 2 80486DX4 (WB) 1 & 2, 3 1 & 2 2 & 3 4 & 5 1 & 2 & 4 P24D 1 & 2, 3 1 & 2 2 & 3 4 & 5 2 & 3 & 4 P24T 3 & 4 1 & 2 Open 1 & 2 2 & 3 CX5X86 1 & 2, 3 1 & 2 2 & 3 4 & 5 1 & 2 & 4 Note: Pins designated should be in the closed position. DMA CHANNEL SELECTION Channel JP22 JP23 1 Pins 2 & 3 closed Pins 2 & 3 closed 3 Pins 1 & 2 closed Pins 1 & 2 closed