AST RESEARCH, INC.
BRAVO LC (KING P) P/75 (202766-101)
|
Processor |
CX487SX/80486SX/CX486DX/80486DX/CX486DX2/80486DX2/80486DX4/ Pentium Overdrive/CX5X86 |
|
Processor Speed |
20/25/33/50(internal)/66(internal)/75(internal)/100(internal)MHz |
|
Chip Set |
Unidentified |
|
Max. Onboard DRAM |
128MB |
|
Cache |
128/256KB |
|
BIOS |
Unidentified |
|
Dimensions |
254mm x 218mm |
|
I/O Options |
Floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), 8514 video pass through connector, VGA port, riser slot |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
PS/2 mouse port |
CN2 |
Turbo LED (not used) |
J10 |
|
Serial port |
CN3 |
Turbo switch (not used) |
J12 pins 2 & 3 |
|
Serial port |
CN4 |
Control console power LED |
J14 |
|
Parallel port |
CN5 |
Reset switch (not used) |
J15 |
|
VGA port |
CN6 |
8514 video pass through connector |
J16 |
|
IDE interface 1 |
J3 |
Speaker |
J18 pins 1 & 2 |
|
Floppy drive interface |
J5 |
Control console hard drive LED |
JP15 |
|
IDE interface 2 |
J7 |
Riser slot |
SL1 |
|
Green PC connector (not used) |
J9 | ||
|
Note: The locations of J9 & J10 are unidentified. | |||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
» |
Factory configured - do not alter |
J11 |
N/A |
|
» |
Password enabled |
JP2 |
Closed |
|
Password disabled |
JP2 |
Open | |
|
» |
On board video enabled |
JP29 |
Closed |
|
On board video disabled |
JP29 |
Open | |
|
» |
Monitor type select color |
JP30 |
Closed |
|
Monitor type select monochrome |
JP30 |
Open | |
|
» |
Flash BIOS normal operation |
JP31 |
Closed |
|
Flash BIOS force update at boot |
JP31 |
Open | |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
4MB |
(1) 1M x 32 |
NONE |
NONE |
NONE |
|
8MB |
(1) 2M x 32 |
NONE |
NONE |
NONE |
|
8MB |
(1) 1M x 32 |
(1) 1M x 32 |
NONE |
NONE |
|
9MB |
(1) 1M x 32 |
(1) 1M x 32 |
(1) 256K x 32 |
NONE |
|
10MB |
(1) 1M x 32 |
(1) 1M x 32 |
(1) 256K x 32 |
(1) 256K x 32 |
|
12MB |
(1) 1M x 32 |
(1) 1M x 32 |
(1) 1M x 32 |
NONE |
|
16MB |
(1) 1M x 32 |
(1) 1M x 32 |
(1) 1M x 32 |
(1) 1M x 32 |
|
16MB |
(1) 4M x 32 |
NONE |
NONE |
NONE |
|
17MB |
(1) 2M x 32 |
(1) 2M x 32 |
(1) 256K x 32 |
NONE |
|
18MB |
(1) 2M x 32 |
(1) 2M x 32 |
(1) 256K x 32 |
(1) 256K x 32 |
|
20MB |
(1) 2M x 32 |
(1) 2M x 32 |
(1) 1M x 32 |
NONE |
|
24MB |
(1) 2M x 32 |
(1) 2M x 32 |
(1) 1M x 32 |
(1) 1M x 32 |
|
24MB |
(1) 2M x 32 |
(1) 2M x 32 |
(1) 2M x 32 |
NONE |
|
32MB |
(1) 2M x 32 |
(1) 2M x 32 |
(1) 2M x 32 |
(1) 2M x 32 |
|
32MB |
(1) 8M x 32 |
NONE |
NONE |
NONE |
|
32MB |
(1) 4M x 32 |
(1) 4M x 32 |
NONE |
NONE |
|
33MB |
(1) 4M x 32 |
(1) 4M x 32 |
(1) 256K x 32 |
NONE |
|
34MB |
(1) 4M x 32 |
(1) 4M x 32 |
(1) 256K x 32 |
(1) 256K x 32 |
|
DRAM CONFIGURATION (CON’T) | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
36MB |
(1) 4M x 32 |
(1) 4M x 32 |
(1) 1M x 32 |
NONE |
|
40MB |
(1) 4M x 32 |
(1) 4M x 32 |
(1) 1M x 32 |
(1) 1M x 32 |
|
40MB |
(1) 4M x 32 |
(1) 4M x 32 |
(1) 2M x 32 |
NONE |
|
48MB |
(1) 4M x 32 |
(1) 4M x 32 |
(1) 2M x 32 |
(1) 2M x 32 |
|
48MB |
(1) 4M x 32 |
(1) 4M x 32 |
(1) 4M x 32 |
NONE |
|
64MB |
(1) 4M x 32 |
(1) 4M x 32 |
(1) 4M x 32 |
(1) 4M x 32 |
|
64MB |
(1) 8M x 32 |
(1) 8M x 32 |
NONE |
NONE |
|
66MB |
(1) 8M x 32 |
(1) 8M x 32 |
(1) 256K x 32 |
(1) 256K x 32 |
|
68MB |
(1) 8M x 32 |
(1) 8M x 32 |
(1) 1M x 32 |
NONE |
|
72MB |
(1) 8M x 32 |
(1) 8M x 32 |
(1) 1M x 32 |
(1) 1M x 32 |
|
72MB |
(1) 8M x 32 |
(1) 8M x 32 |
(1) 2M x 32 |
NONE |
|
80MB |
(1) 8M x 32 |
(1) 8M x 32 |
(1) 2M x 32 |
(1) 2M x 32 |
|
80MB |
(1) 8M x 32 |
(1) 8M x 32 |
(1) 4M x 32 |
NONE |
|
96MB |
(1) 8M x 32 |
(1) 8M x 32 |
(1) 4M x 32 |
(1) 4M x 32 |
|
96MB |
(1) 8M x 32 |
(1) 8M x 32 |
(1) 8M x 32 |
NONE |
|
128MB |
(1) 8M x 32 |
(1) 8M x 32 |
(1) 8M x 32 |
(1) 8M x 32 |
|
CACHE CONFIGURATION | ||
|
Size |
Bank 0 |
TAG |
|
128KB |
(4) 32K x 8 |
(1) 8K x 8 |
|
256KB |
(4) 64K x 8 |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | ||
|
Size |
JP16 |
JP17 |
|
128KB |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
256KB |
pins 2 & 3 closed |
pins 1 & 2 closed |
|
CPU TYPE CONFIGURATION | |||||
|
Type |
JP3 |
JP4 |
JP5 |
JP6 |
JP7 |
|
Cyrix 486 |
Closed |
Open |
Open |
Open |
Open |
|
Intel 486 |
Open |
Closed |
Closed |
Closed |
Open |
|
Cyrix 5x86 |
Open |
Closed |
Closed |
Closed |
Open |
|
CPU TYPE CONFIGURATION (CON’T) | ||||||
|
Type |
JP8 |
JP9 |
JP20 |
JP21 |
JP22 |
JP23 |
|
Cyrix 486 |
Open |
Closed |
Closed |
Open |
Closed |
Open |
|
Intel 486 |
Closed |
Open |
Open |
Open |
Open |
Open |
|
Cyrix 5x86 |
Closed |
Open |
Open |
Open |
Open |
Open |
|
CPU TYPE CONFIGURATION | |
|
Type |
JP11 |
|
SX |
pins 2 & 3 closed |
|
DX |
pins 1 & 2 closed |
|
CPU SPEED CONFIGURATION | ||
|
Speed |
JP1 |
JP19 |
|
20MHz |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
25MHz |
pins 1 & 2 closed |
pins 3 & 4 closed |
|
33MHz |
pins 1 & 2 closed |
pins 5 & 6 closed |
|
50iMHz |
pins 1 & 2 closed |
pins 3 & 4 closed |
|
66iMHz |
pins 1 & 2 closed |
pins 5 & 6 closed |
|
75iMHz |
pins 1 & 2 closed |
pins 3 & 4 closed |
|
100iMHz |
pins 1 & 2 closed |
pins 5 & 6 closed |
|
CPU VOLTAGE CONFIGURATION | ||||
|
Voltage |
V1 |
V2 |
V3 |
V4 |
|
3.45v |
Open |
Open |
Open |
Open |
|
5v |
Closed |
Closed |
Closed |
Closed |
|
VIDEO MEMORY CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
1MB |
(2) 512K x 8 |
NONE |
|
2MB |
(2) 512K x 8 |
(2) 512K x 8 |
|
MISCELLANEOUS TECHNICAL NOTE |
|
Note: The location of pin 1 on the jumpers is unidentified. |