...because we can't all be on the bleeding edge...
J-MARK COMPUTER CORPORATION
J-446A (V2.0)
|
Processor |
80486SX/AM486DX2/CX486DX2/80486DX2/CX486DX4/AM486DX4/ AM486DX4(WB)/AM486DX4(WT)/80486DX4(WB)/80486DX4(WT)/ P24D/P24T/CX5X86/AM5X86 |
|
Processor Speed |
25/33/40/50(internal)/50/66(internal)/80(internal)/100(internal)/ 120(internal)MHz |
|
Chip Set |
SIS |
|
Video Chip Set |
None |
|
Maximum Onboard Memory |
128MB |
|
Maximum Video Memory |
None |
|
Cache |
128/256KB |
|
BIOS |
Award |
|
Dimensions |
254mm x 218mm |
|
I/O Options |
32-bit PCI slots (3), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, serial ports (2) |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Parallel port |
CN1 |
IDE interface LED |
JP33 |
|
IDE interface 2 |
CN2 |
Green PC connector |
JP35 |
|
IDE interface 1 |
CN3 |
Turbo LED |
JP37 |
|
Floppy drive interface |
CN4 |
Reset switch |
JP38 |
|
Serial port 1 |
CN5 |
Turbo switch |
JP39 |
|
Serial port 2 |
CN6 |
Power LED & keylock |
JP40 |
|
External battery |
JP1 |
Green PC LED |
LED1 |
|
Speaker |
JP27 |
32-bit PCI slots |
PC1 - PC3 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
» |
Monitor type select color |
JP6 |
Closed |
|
Monitor type select monochrome |
JP6 |
Open | |
|
» |
Factory configured - do not alter |
JP13 |
Unidentified |
|
» |
BIOS type select EPROM |
JP19 |
Open |
|
BIOS type select 5v flash |
JP19 |
Pins 2 & 3 closed | |
|
BIOS type select 12v flash |
JP19 |
Pins 1 & 2 closed | |
|
» |
Factory configured - do not alter |
JP21 |
Unidentified |
|
Turbo enabled |
JP39 |
Pins 2 & 3 closed | |
|
Turbo disabled |
JP39 |
Pins 1 & 2 closed | |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
1MB |
(1) 256K x 36 |
None |
None |
None |
|
2MB |
(1) 512K x 36 |
None |
None |
None |
|
2MB |
(1) 256K x 36 |
(1) 256K x 36 |
None |
None |
|
3MB |
(1) 512K x 36 |
(1) 256K x 36 |
None |
None |
|
3MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
None |
|
3MB |
(1) 256K x 36 |
(1) 512K x 36 |
None |
None |
|
4MB |
(1) 1M x 36 |
None |
None |
None |
|
4MB |
(1) 512K x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
None |
|
4MB |
(1) 512K x 36 |
(1) 512K x 36 |
None |
None |
|
4MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
|
5MB |
(1) 1M x 36 |
(1) 256K x 36 |
None |
None |
|
5MB |
(1) 512K x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
|
6MB |
(1) 1M x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
None |
|
6MB |
(1) 1M x 36 |
(1) 512K x 36 |
None |
None |
|
DRAM CONFIGURATION (CON’T) | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
6MB |
(1) 512K x 36 |
(1) 512K x 36 |
(1) 512K x 36 |
None |
|
7MB |
(1) 1M x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
|
8MB |
(1) 2M x 36 |
None |
None |
None |
|
8MB |
(1) 1M x 36 |
(1) 512K x 36 |
(1) 512K x 36 |
None |
|
8MB |
(1) 1M x 36 |
(1) 1M x 36 |
None |
None |
|
8MB |
(1) 512K x 36 |
(1) 512K x 36 |
(1) 512K x 36 |
(1) 512K x 36 |
|
9MB |
(1) 2M x 36 |
(1) 256K x 36 |
None |
None |
|
10MB |
(1) 2M x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
None |
|
10MB |
(1) 2M x 36 |
(1) 512K x 36 |
None |
None |
|
10MB |
(1) 1M x 36 |
(1) 512K x 36 |
(1) 512K x 36 |
(1) 512K x 36 |
|
11MB |
(1) 2M x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
|
12MB |
(1) 2M x 36 |
(1) 512K x 36 |
(1) 512K x 36 |
None |
|
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 |
|
14MB |
(1) 2M x 36 |
(1) 512K x 36 |
(1) 512K x 36 |
(1) 512K x 36 |
|
16MB |
(1) 4M x 36 |
None |
None |
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 36 |
None |
None |
|
18MB |
(1) 4M x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
None |
|
18MB |
(1) 4M x 36 |
(1) 512K x 36 |
None |
None |
|
19MB |
(1) 4M x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
|
20MB |
(1) 4M x 36 |
(1) 512K x 36 |
(1) 512K x 36 |
None |
|
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 36 |
(1) 512K x 36 |
(1) 512K x 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 |
|
24MB |
(1) 2M x 36 |
(1) 4M x 36 |
None |
None |
|
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 36 |
None |
None |
|
34MB |
(1) 8M x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
None |
|
34MB |
(1) 8M x 36 |
(1) 512K x 36 |
None |
None |
|
35MB |
(1) 8M x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
|
DRAM CONFIGURATION (CON’T) | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
36MB |
(1) 8M x 36 |
(1) 512K x 36 |
(1) 512K x 36 |
None |
|
36MB |
(1) 8M x 36 |
(1) 1M x 36 |
None |
None |
|
38MB |
(1) 8M x 36 |
(1) 512K x 36 |
(1) 512K x 36 |
(1) 512K x 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 |
|
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 |
|
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 |
|
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 |
|
68MB |
(1) 1M x 36 |
(1) 8M x 36 |
(1) 8M x 36 |
None |
|
72MB |
(1) 2M x 36 |
(1) 8M x 36 |
(1) 8M x 36 |
None |
|
80MB |
(1) 8M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
|
96MB |
(1) 8M x 36 |
(1) 8M x 36 |
(1) 8M x 36 |
None |
|
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) 8M x 36 |
(1) 8M x 36 |
(1) 8M x 36 |
(1) 8M x 36 |
|
CACHE CONFIGURATION | ||
|
Size |
Bank 0 |
TAG |
|
128KB |
(4) 32K x 8 |
(1) 8K x 8 |
|
256KB |
(4) 64K x 8 |
(1) 16K x 8 |
|
CACHE JUMPER CONFIGURATION | ||
|
Size |
JP7 |
JP8 |
|
128KB |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
256KB |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
|
CPU SPEED CONFIGURATION | ||
|
Speed |
JP11 |
JP12 |
|
25MHz |
Open |
Pins 1 & 2 closed |
|
33MHz |
Pins 1 & 2, 3 & 4 closed |
Pins 1 & 2 closed |
|
40MHz |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
50iMHz |
Open |
Pins 1 & 2 closed |
|
50MHz |
Pins 3 & 4 closed |
Pins 2 & 3 closed |
|
66iMHz |
Pins 1 & 2, 3 & 4 closed |
Pins 1 & 2 closed |
|
80iMHz |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
100iMHz |
Pins 1 & 2, 3 & 4 closed |
Pins 1 & 2 closed |
|
120iMHz |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
CPU TYPE SELECTION | |||||
|
Type |
JP9 |
JP10 |
JP14 |
JP15 |
JP16 |
|
80486SX |
Open |
2 & 3 |
Open |
Open |
Open |
|
AM486DX2 |
2 & 3 |
2 & 3 |
Open |
Open |
2 & 3 |
|
CX486DX2 |
2 & 3 |
2 & 3 |
Open |
Open |
Open |
|
80486DX2 |
2 & 3 |
2 & 3 |
Open |
Open |
Open |
|
CX486DX4 |
2 & 3 |
2 & 3 |
Open |
Open |
Open |
|
AM486DX4 |
2 & 3 |
1 & 2 |
Open |
1 & 2 |
1 & 2 |
|
AM486DX4 (WB) |
2 & 3 |
1 & 2 |
Open |
1 & 2 |
1 & 2 |
|
AM486DX4 (WT) |
2 & 3 |
2 & 3 |
Open |
Open |
1 & 2 |
|
80486DX4 (WB) |
2 & 3 |
1 & 2 |
Open |
1 & 2 |
1 & 2 |
|
80486DX4 (WT) |
2 & 3 |
2 & 3 |
Open |
Open |
Open |
|
P24D |
2 & 3 |
1 & 2 |
Open |
1 & 2 |
1 & 2 |
|
P24T |
1 & 2 |
1 & 2 |
1 & 2 |
Open |
Open |
|
CX5X86 |
2 & 3 |
2 & 3 |
Open |
1 & 2 |
Open |
|
AM5X86 |
2 & 3 |
1 & 2 |
Open |
1 & 2 |
1 & 2 |
|
Note: Pins designated should be in the closed position. | |||||
|
CPU TYPE SELECTION (CON’T) | |||||
|
Type |
JP17 |
JP20 |
JP23 |
JP24 |
JP25 |
|
80486SX |
2 & 3 |
Closed |
1 & 2 |
4 & 5 |
2 & 3 |
|
AM486DX2 |
Open |
Open |
Open |
4 & 5 |
1 & 2, 3 & 4 |
|
CX486DX2 |
1 & 2 |
Closed |
Open |
2 & 3 |
1 & 2, 3 & 4 |
|
80486DX2 |
2 & 3 |
Closed |
1 & 2 |
4 & 5 |
1 & 2, 3 & 4 |
|
CX486DX4 |
1 & 2 |
Closed |
Open |
2 & 3 |
1 & 2, 3 & 4 |
|
AM486DX4 |
2 & 3 |
Closed |
2 & 3 |
4 & 5 |
1 & 2, 3 & 4 |
|
AM486DX4 (WB) |
2 & 3 |
Closed |
2 & 3 |
4 & 5 |
1 & 2, 3 & 4 |
|
AM486DX4 (WT) |
Open |
Open |
Open |
4 & 5 |
1 & 2, 3 & 4 |
|
80486DX4 (WB) |
2 & 3 |
Closed |
2 & 3 |
4 & 5 |
1 & 2, 3 & 4 |
|
80486DX4 (WT) |
2 & 3 |
Closed |
1 & 2 |
4 & 5 |
1 & 2, 3 & 4 |
|
P24D |
2 & 3 |
Closed |
2 & 3 |
4 & 5 |
1 & 2, 3 & 4 |
|
P24T |
2 & 3 |
Closed |
Open |
1 & 2 |
1 & 2, 3 & 4 |
|
CX5X86 |
2 & 3 |
Closed |
2 & 3 |
4 & 5 |
1 & 2, 3 & 4 |
|
AM5X86 |
2 & 3 |
Closed |
2 & 3 |
4 & 5 |
1 & 2, 3 & 4 |
|
Note: Pins designated should be in the closed position. | |||||
|
CPU TYPE SELECTION (CON’T) | ||||
|
Type |
JP26 |
JP28 |
JP29 |
JP30 |
|
80486SX |
3 & 4 |
Open |
Open |
Open |
|
AM486DX2 |
3 & 4 |
Open |
Open |
Open |
|
CX486DX2 |
2 & 3 |
2 & 3 |
2 & 3 |
Open |
|
80486DX2 |
3 & 4 |
Open |
Open |
Open |
|
CX486DX4 |
2 & 3 |
2 & 3 |
2 & 3 |
Open |
|
AM486DX4 |
1 & 2, 3 & 4 |
Open |
1 & 2 |
Open |
|
AM486DX4 (WB) |
1 & 2, 3 & 4 |
Open |
1 & 2 |
Open |
|
AM486DX4 (WT) |
3 & 4 |
Open |
Open |
Open |
|
80486DX4 (WB) |
1 & 2, 3 & 4 |
Open |
1 & 2 |
Open |
|
80486DX4 (WT) |
3 & 4 |
Open |
Open |
Open |
|
P24D |
1 & 2, 3 & 4 |
Open |
1 & 2 |
Open |
|
P24T |
3 & 4 |
1 & 2 |
1 & 2 |
Open |
|
CX5X86 |
1 & 2, 3 & 4 |
Open |
1 & 2 |
Open |
|
AM5X86 |
1 & 2, 3 & 4 |
Open |
1 & 2 |
2 & 3 |
|
Note: Pins designated should be in the closed position. | ||||
|
CPU VOLTAGE CONFIGURATION | |||
|
Voltage |
JP31 |
JP32 |
JP34 |
|
3.3v |
Pins 2 & 3 closed |
Pins 5 & 6 closed |
Pins 2 & 3 closed |
|
3.45v |
Pins 2 & 3 closed |
Pins 3 & 4 closed |
Pins 2 & 3 closed |
|
4v |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
|
5v |
Pins 1 & 2 closed |
N/A |
Pins 1 & 2 closed |
|
GREEN PC CONFIGURATION | |
|
Setting |
JP36 |
|
Doze mode |
Pins 1 & 2 closed |
|
Suspend mode |
Pins 3 & 4 closed |
|
Standby mode |
Pins 5 & 6, 7 & 8 closed |
|
CMOS CONFIGURATION | ||
|
Setting |
JP2 |
JP3 |
|
CMOS memory normal operation |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
CMOS memory clear |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
|
DAM CHANNEL SELECTION | ||
|
Channel |
JP18 |
JP22 |
|
1 |
Pins 1 & 3 closed |
Pins 1 & 3 closed |
|
3 |
Pins 2 & 4 closed |
Pins 2 & 4 closed |