AUVA COMPUTER INC.
CAM 25-P9, CAM 33-P9, CAM 33-F
J-MARK COMPUTER CORPORATION
OPTI-495SX 3/486WB
SEE-THRU DATA SYSTEMS, LTD.
STO 98-5VL
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Processor | 80386DX/CX486DLC/80486SX/80487SX/80486DX/ODP486SX/80486DX2 |
Processor Speed | 25/33/40/50(internal)/50/66(internal)MHz |
Chip Set | OPTI |
Max. Onboard DRAM | 32MB |
SRAM Cache | 64/128/256KB |
BIOS | MR |
Dimensions | 235mm x 220mm |
I/O Options | VESA local bus slots (3) |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | J1 | Turbo LED | JP32 |
Power LED & keylock | J19 | Reset switch | RST |
Speaker | J20 | 32-bit VESA Local bus slots (Slave) | S2 & S3 |
Turbo switch | JP31 | 32-bit VESA Local bus slots (Master) | S2 & S3 |
Note:VESA Local bus slot S1 should only be used for a VGA video card. |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | CMOS memory normal operation | JP1 | pins 2 & 3 closed |
| CMOS memory clear | JP1 | pins 1 & 2 closed |
» | Factory configured - do not alter | JP2 | open |
| Bus clock speed select iOSC/4 | JP3 | closed |
| Bus clock speed select iOSC/5 | JP3 | open |
» | Monitor type select color | JP4 | closed |
| Monitor type select monochrome | JP4 | open |
» | Factory configured - do not alter | JP16 | open |
| 80486 PQFP enabled | JP17 | open |
| 80486 PQFP disabled | JP17 | closed |
| 80386 PQFP enabled | JP18 | open |
| 80386 PQFP disabled | JP18 | closed |
» | VESA bus speed select <=33MHz | JP22 | open |
| VESA bus speed select > 33MHz | JP22 | closed |
» | VESA bus wait states select 0 (CPU <=33MHz) | JP26 | open |
| VESA bus wait state select 1 (CPU > 33MHz) | JP26 | closed |
DRAM CONFIGURATION | ||
Size | Bank 0 | Bank 1 |
1MB | (4) 256K x 9 | NONE |
2MB | (4) 256K x 9 | (4) 256K x 9 |
4MB | (4) 1M x 9 | NONE |
5MB | (4) 256K x 9 | (4) 1M x 9 |
8MB | (4) 1M x 9 | (4) 1M x 9 |
16MB | (4) 4M x 9 | NONE |
20MB | (4) 1M x 9 | (4) 4M x 9 |
32MB | (4) 4M x 9 | (4) 4M x 9 |
SRAM CONFIGURATION | ||||
Size | Cache | Location | TAG(U39) | TAG(U40) |
64KB | (8) 8K x 8 | Banks 0 & 1 | (1) 8K x 8 | NONE |
128KB | (4) 32K x 8 | Bank 0 | (1) 8K x 8 | NONE |
256KB | (8) 32K x 8 | Banks 0 & 1 | (1) 32K x 8 | NONE |
256KB | (8) 32K x 8 | Banks 0 & 1 | (1) 8K x 8 | (1) 8K x 8 |
SRAM JUMPER CONFIGURATION | ||||
Size | JP10 | JP11 | JP13 | JP15 |
64KB | pins 2 & 3 closed | open | open | open |
128KB | pins 1 & 2 closed | closed | closed | open |
256KB | pins 2 & 3 closed | closed | closed | closed |
CPU CONFIGURATION | |||||||||
CPU | JP5 | JP6 | JP7 | JP12 | JP30 | JP34 | JP35 | JP36 | JP37 |
80386DX | 2&3 | open | open | open | closed | open | N/A | N/A | N/A |
CX486DLC | 2&3 | closed | closed | open | closed | open | N/A | N/A | N/A |
80486SX | 1&2 | open | open | closed | open | closed | open | open | 2&3 |
80487SX | 1&2 | open | open | closed | open | closed | 2&3 | closed | 1&2 |
80486DX | 1&2 | open | open | closed | open | closed | 1&2 | closed | 1&2 |
ODP487SX | 1&2 | open | open | closed | open | closed | 2&3 | closed | 1&2 |
80486DX2 | 1&2 | open | open | closed | open | closed | 1&2 | closed | 1&2 |
Note:Pins designated should be in the closed position. |
CLOCK SPEED SELECT | ||||
Speed | JP25 | JP28 | JP29 | JP33 |
25MHz | pins 1 & 2 closed | closed | open | pins 1 & 2 closed |
33MHz(386/486DLC) | pins 2 & 3 closed | closed | open | pins 1 & 2 closed |
33MHz(486) | pins 1 & 2 closed | open | closed | pins 1 & 2 closed |
40MHz(486) | pins 1 & 2 closed | open | open | pins 1 & 2 closed |
40MHz(386/486DLC) | pins 2 & 3 closed | open | closed | pins 1 & 2 closed |
50iMHz | pins 2 & 3 closed | closed | open | pins 2 & 3 closed |
50MHz | pins 1 & 2 closed | closed | open | pins 1 & 2 closed |
66iMHz | pins 2 & 3 closed | open | closed | pins 2 & 3 closed |
VESA SLOT (S2 & S3) MASTER/SLAVE CONFIGURATION | ||
Jumper | Master/Slave | Slave only |
JP8 | open | closed |
JP9 | open | closed |
JP14 | open | closed |
JP19 | open | closed |
JP21 | open | closed |
JP23 | pins 1 & 2 closed | pins 2 & 3 closed |
JP24 | open | closed |
JP27 | pins 1 & 2 closed | pins 2 & 3 closed |
U29 (PAL socket) | Installed | N/A |
U38 (PAL socket) | Installed | N/A |
Note:When the Master/Slave setting is used slots S2 & S3 can use Bus-master cards or slave cards. When the Slave only setting is used non-Bus-master cards can be used. |