FORCOM TECHNOLOGY CORPORATION
419
|
Processor |
80486SX/CX486S/80487SX/CX486S2/80486DX/Am486DX/CX486DX/ODP486SX/80486DX2/Am468DX2/Cx486DX2/80486DX4/Pentium Overdrive |
|
Processor Speed |
20/25/33/40/50/50(internal)/66i/75i/100iMHz |
|
Chip Set |
OPTI |
|
Max. Onboard DRAM |
128MB |
|
Cache |
64/128/256/512KB |
|
BIOS |
AMI |
|
Dimensions |
220mm x 260mm |
|
I/O Options |
32-bit VESA local bus slots (3), Green PC feature |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J1 |
Green monitor power supply |
JP63 |
|
Power LED & keylock |
JP2 |
External power management interface |
JP68 |
|
Turbo LED |
JP16 |
Reset switch |
S1 |
|
Turbo switch |
JP17 |
32-bit VESA Local bus slots |
SL1,SL2,SL3 |
|
Speaker |
JP18 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
Monitor type select color |
JP30 |
Closed |
|
Monitor type select monochrome |
JP30 |
Open | |
|
|
Normal CPU ADS# operation |
JP36 |
pins 2 & 3 |
|
Delay CPU ADS# clock operation |
JP36 |
pins 1 & 2 | |
|
|
Power to CPU set at 5V |
JP64 |
pins 1 & 3, 2 & 4 |
|
Power to CPU set at 3.3V (for Intel DX4 CPU) |
JP64 |
pins 4 & 6, 3 & 5 | |
|
Set CPU external operation clock to 3X |
JP65 |
Open | |
|
Set CPU external operation clock to 2X |
JP65 |
Closed | |
|
Cache size enabled 64KB or 256KB |
JP67 |
Closed | |
|
Cache size enabled 128KB or 512KB |
JP67 |
Open | |
|
Note:Jumper JP65, for any type of CPU other than above listed, leave "Open". | |||
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
2MB |
(1) 256K x 36 |
(1) 256K x 36 |
NONE |
NONE |
|
4MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
|
4MB |
(1) 1M x 36 |
NONE |
NONE |
NONE |
|
5MB |
(1) 256K x 36 |
(1) 1M x 36 |
NONE |
NONE |
|
8MB |
(1) 1M x 36 |
(1) 1M x 36 |
NONE |
NONE |
|
10MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
|
12MB |
(1) 1M x 36 |
NONE |
(1) 1M x 36 |
(1) 1M x 36 |
|
16MB |
(1) 4M x 36 |
NONE |
NONE |
NONE |
|
16MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
|
20MB |
(1) 1M x 36 |
(1) 4M x 36 |
NONE |
NONE |
|
20MB |
(1) 1M x 36 |
NONE |
(1) 4M x 36 |
NONE |
|
32MB |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
NONE |
|
64MB |
(1) 16M x 36 |
NONE |
NONE |
NONE |
|
64MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
|
128MB |
(1) 16M x 36 |
(1) 16M x 36 |
NONE |
NONE |
|
128MB |
(1) 16M x 36 |
NONE |
(1) 16M x 36 |
NONE |
|
CACHE CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
TAG |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 8K x 8 |
|
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 |
JP10 |
JP11 |
JP13 |
JP50 |
|
64KB |
Open |
Open |
pins 2 & 3 closed |
Open |
|
128KB |
Open |
Closed |
pins 1 & 2 closed |
Open |
|
256KB |
Closed |
Closed |
pins 2 & 3 closed |
Open |
|
512KB |
Closed |
Closed |
pins 1 & 2 closed |
Closed |
|
INTERNAL CACHE TYPE CONFIGURATION | |||
|
CPU Type |
Internal Cache Type |
JP58 |
JP59 |
|
P24T |
Write-Through |
Open |
N/A |
|
P24T |
Write-Back |
Closed |
N/A |
|
P24D |
Write-Through |
N/A |
Open |
|
P24D |
Write-Back |
N/A |
Closed |
|
CPU TYPE CONFIGURATION | ||||||
|
CPU Type |
JP3 |
JP5 |
JP8 |
JP42 |
JP43 |
JP44 |
|
80486SX |
Open |
Open |
pins 2 & 3 |
Open |
pins 1 & 2 |
Open |
|
AM486 |
pins 1 & 2 |
pins 2 & 3 |
pins 1 & 2 |
Open |
pins 1 & 2 |
Open |
|
Cx486S |
Open |
Open |
pins 2 & 3 |
pins 2 & 3 |
pins 1 & 2 |
Open |
|
80487SX |
pins 2 & 3 |
pins 2 & 3 |
pins 1 & 2 |
Open |
pins 1 & 2 |
Open |
|
Cx486S2 |
Open |
Open |
pins 2 & 3 |
pins 2 & 3 |
pins 2 & 3 |
Open |
|
80486DX |
pins 1 & 2 |
pins 2 & 3 |
pins 1 & 2 |
Open |
pins 1 & 2 |
Open |
|
Cx486DX |
pins 1 & 2 |
pins 2 & 3 |
pins 1 & 2 |
pins 2 & 3 |
pins 1 & 2 |
Open |
|
Cx486DX2 |
pins 1 & 2 |
pins 2 & 3 |
pins 1 & 2 |
pins 2 & 3 |
pins 2 & 3 |
Open |
|
P24C (DX4) |
pins 1 & 2 |
pins 2 & 3 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
Closed |
|
P24T |
pins 2 & 3 |
pins 2 & 3 |
pins 1 & 2 |
Open |
pins 1 & 2 |
Open |
|
P24D |
pins 2 & 3 |
pins 2 & 3 |
pins 1 & 2 |
Open |
pins 1 & 2 |
Open |
|
Note:Pins designated are in the closed position. | ||||||
|
CPU TYPE CONFIGURATION (CONTINUED) | |||||
|
CPU Type |
JP45 |
JP46 |
JP47 |
JP48 |
JP49 |
|
80486SX |
Open |
Open |
Open |
Open |
pins 1 & 2 |
|
AMD486 |
Open |
Open |
Open |
Open |
pins 1 & 2 |
|
Cx486S |
Open |
Open |
Closed |
Closed |
pins 1 & 2 |
|
80487SX |
Open |
Open |
Open |
Open |
pins 1 & 2 |
|
Cx486S2 |
Open |
Open |
Closed |
Closed |
pins 2 & 3 |
|
80486DX |
Open |
Open |
Open |
Open |
pins 1 & 2 |
|
Cx486DX |
Open |
Open |
Closed |
Closed |
pins 1 & 2 |
|
Cx486DX2 |
Open |
Open |
Closed |
Closed |
pins 2 & 3 |
|
P24C (DX4) |
Closed |
Closed |
Open |
Open |
pins 1 & 2 |
|
P24T |
Open |
Open |
Open |
Open |
pins 1 & 2 |
|
P24D |
Open |
Open |
Open |
Open |
pins 1 & 2 |
|
Note:Pins designated are in the closed position. | |||||
|
CPU TYPE (S-SERIES) CONFIGURATION | ||||||
|
CPU Type |
JP3 |
JP5 |
JP8 |
JP42 |
JP43 |
JP44 |
|
80486SX |
Open |
Open |
pins 2 & 3 |
pins 1 & 2 |
pins 1 & 2 |
Closed |
|
80486DX |
pins 1 & 2 |
pins 2 & 3 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
Closed |
|
Note:Pins designated are in the closed position. | ||||||
|
CPU TYPE (S-SERIES) CONFIGURATION | |||||
|
CPU Type |
JP45 |
JP46 |
JP47 |
JP48 |
JP49 |
|
80486SX |
Closed |
Closed |
Open |
Open |
pins 1 & 2 |
|
80486DX |
Closed |
Closed |
Open |
Open |
pins 1 & 2 |
|
Note:Pins designated are in the closed position. | |||||
|
BUS SPEED (ID3) CONFIGURATION | |
|
CPU speed |
JP34 |
|
<= 33MHz |
Open |
|
> 33MHz |
Closed |
|
VESA WAIT STATE (ID2) CONFIGURATION | |
|
Wait states |
JP33 |
|
0 wait states |
Open |
|
1 wait state |
Closed |
|
SYSTEM CLOCK (NOT FOR P24C) CONFIGURATION | |||
|
Frequency |
JP21 |
JP22 |
JP23 |
|
20MHz |
pins 2 & 3 closed |
pins 2 & 3 closed |
pins 1 & 2 closed |
|
25MHz |
pins 2 & 3 closed |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
33MHz |
pins 1 & 2 closed |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
40MHz |
pins 2 & 3 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
50MHz |
pins 1 & 2 closed |
pins 2 & 3 closed |
pins 1 & 2 closed |
|
SYSTEM CLOCK (FOR P24C (DX4)) CONFIGURATION | |||
|
Frequency |
JP21 |
JP22 |
JP23 |
|
25MHz |
pins 2 & 3 closed |
Open |
pins 2 & 3 closed |
|
33MHz |
Open |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
50MHz |
Open |
pins 2 & 3 closed |
Open |